{"title":"LG Replacement Batteries","description":"\u003cp class=\"PDq2pG_selectionAnchorContainer\"\u003eShop replacement batteries for LG smartphones, laptops, tablets, cameras, and other portable electronics. BatteryWeb offers compatible battery options for a wide range of LG devices, including \u003cstrong\u003eLG Gram, UltraPC, Gram 2-in-1, G Series, V Series, K Series, Stylo, Velvet, Wing, and other LG models\u003c\/strong\u003e.\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eLG batteries are made in different sizes and configurations depending on the device. Replacement options may include \u003cstrong\u003elithium-ion and lithium-polymer battery packs\u003c\/strong\u003e with different voltage ratings, capacities, connectors, cell arrangements, and physical dimensions.\u003c\/p\u003e\n\u003cp\u003eFor LG laptops, our selection includes batteries for \u003cstrong\u003eLG Gram and UltraPC\u003c\/strong\u003e systems, including lightweight notebooks and convertible models. For mobile devices, you can find replacement batteries for \u003cstrong\u003eLG G, V, K, Stylo, Velvet, Wing, and other LG smartphones\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eLG also produced a range of tablets and portable electronics, so battery specifications can vary significantly between models. A battery designed for one LG device may not fit another model even when the voltage or capacity appears similar.\u003c\/p\u003e\n\u003cp\u003eTo find the correct replacement, search using the \u003cstrong\u003eLG device model, battery model number, part number, voltage, capacity, or original battery identification\u003c\/strong\u003e. The number printed directly on the original battery is often the best starting point.\u003c\/p\u003e\n\u003cp\u003eBefore ordering, compare the \u003cstrong\u003epart number, voltage, capacity, connector, cell configuration, and physical dimensions\u003c\/strong\u003e with your existing battery. This helps confirm that the replacement is designed for your specific LG device.\u003c\/p\u003e\n\u003cp\u003eWhether you need a battery for an \u003cstrong\u003eLG Gram laptop, UltraPC notebook, G Series phone, V Series phone, Stylo, Velvet, Wing, tablet, or another LG portable device\u003c\/strong\u003e, BatteryWeb provides replacement battery options for many LG models\u003c\/p\u003e","products":[{"product_id":"lg-ph450u-replacement-battery-74v-3000mah-li-ion","title":"EAC63379202 LG PH450U Replacement Battery 7.4V 3000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLG PH450U \/ PH450UG — 7.4V Li-ion Replacement Battery (EAC63379202)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 7.4V, 3000mAh Li-ion battery for the LG PH450U and PH450UG portable projectors. It slots into the same battery bay as the original EAC63379202 cell and restores untethered operation. Use this when the original pack no longer holds a charge or the projector shuts off earlier than it used to.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePH450U and PH450UG compatibility:\u003c\/strong\u003e\n    Both models run the same 7.4V battery rail with the same connector and BMS handshake protocol. One cell covers both variants — no wiring or adapter differences between them.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack on a PH450U and confirmed the BMS accepted the cell, reported charge state correctly, and held stable voltage through full discharge to the projector's cutoff threshold.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eEco mode draw on battery:\u003c\/strong\u003e\n    Set the projector to eco brightness before unplugging from mains. Full lamp brightness pulls 30–40% more current than eco mode. The lamp requires a higher minimum voltage than the fuel gauge empty indicator — the projector will shut off before the battery reads flat if the draw is too high.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the PH450U cuts out before the battery indicator reaches empty\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe PH450U's lamp has a higher minimum operating voltage than the BMS low-voltage cutoff. At full brightness, current draw pulls the cell voltage below the lamp's floor before the battery gauge reads zero. The projector interprets this as a hard fault and kills the lamp to protect the cell. Running eco mode keeps current draw low enough that the lamp stays above its minimum voltage all the way to actual battery cutoff — around 6.0V under load.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eProjector not detecting a new battery after swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eIf the PH450U shows no battery icon or refuses to start on the new cell, the BMS may need a recognition cycle. Plug the projector into mains with the new battery installed and let it charge uninterrupted until the charge indicator goes solid. This completes the initial BMS handshake. If the projector still doesn't register the pack, check that the battery contacts are fully seated — the bay latch must click closed before the BMS can communicate with the cell.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43303978631258,"sku":"BWCS-LPH450SL-1","price":54.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43303978664026,"sku":"BWCS-LPH450SL-2","price":65.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43303978696794,"sku":"BWCS-LPH450SL-3","price":71.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LPH450SL_1.webp?v=1777520717"},{"product_id":"lg-b1632-replacement-battery-36v-600mah-ni-mh","title":"LG B1632 Cordless Phone Compatible Battery 3.6V 600mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLG B1632 — 3.6V Ni-MH Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.6V, 600mAh Ni-MH replacement battery for the LG B1632 cordless phone handset. It slots directly into the handset battery compartment and restores power to the unit when the original cell no longer holds a charge. Voltage and connector match the original LG specification.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eB1632 handset fit:\u003c\/strong\u003e\n    The B1632 uses a 3.6V Ni-MH pack at a fixed form factor — 40 x 42 x 13.5mm. That physical size is what locks this cell to the handset tray. The voltage rail also matches what the base station charger circuit expects when it detects a connected pack.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack through the base station charger and confirmed the BMS handshake completed cleanly. The charge circuit accepted the cell without triggering an error state, and voltage stabilised at the expected float level after a full charge cycle.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-charge conditioning on NiMH cordless packs:\u003c\/strong\u003e\n    After installing, seat the handset in the base for a full 16-hour charge before first use. NiMH cells shipped from storage are partially discharged and need that slow first charge to reach rated capacity. Skipping this step is the single biggest cause of short talk time reports on new replacement packs.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eRange dropping after fitting a new NiMH pack in the B1632\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe B1632 DECT transmitter draws a burst of current each time it fires a radio packet. If the NiMH cell is below full charge or hasn't been conditioned, voltage sags under that RF load. The handset interprets the sag as a low-battery state and reduces transmit power to protect the cell. This shows up as reduced range — the handset sounds fine indoors but loses signal earlier than the original battery did. A full 16-hour conditioning charge resolves this in most cases.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBase station showing no-charge light after installing a new pack\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eNiMH batteries that have sat in storage drop to a resting voltage the base charger may read as a fault or dead cell. The base station checks for a minimum voltage before starting the charge cycle — if the pack is too far below that threshold, the charger doesn't engage. Remove the handset, wait 30 seconds, and reseat it firmly. If the charge light still doesn't activate, the cell may need a brief trickle from a standalone NiMH charger to bring it above 3.0V before the base will accept it.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43340111216730,"sku":"BWCS-P302CL-1","price":32.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43340111249498,"sku":"BWCS-P302CL-2","price":35.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43340111282266,"sku":"BWCS-P302CL-3","price":39.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-P302CL_1.webp?v=1778367188"},{"product_id":"lg-ln700-replacement-battery-37v-1100mah-li-ion","title":"LG LN700 GPS Navigator Replacement Battery 3.7V 1100mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLG LN700 \/ LN710 Series — 3.7V Li-ion Replacement Battery (EAC30173401)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 1100mAh Li-ion cell built to the EAC30173401 spec for LG portable GPS navigators. It fits the LN700, LN704, LN705, and LN710 series, along with four additional LG navigator models that share the same connector and voltage rail. Swap it in when your unit no longer holds a charge or powers off unexpectedly during navigation.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eLN700 \/ LN704 \/ LN705 \/ LN710 series fit:\u003c\/strong\u003e\n    These models share the EAC30173401 footprint, connector pinout, and 3.7V single-cell architecture. The BMS on each accepts this cell without a handshake conflict.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran charge and discharge cycles on this cell and confirmed the protection circuit trips correctly at over-voltage and under-voltage thresholds. Cell temperature stayed within spec throughout.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-fix cold start after fitting:\u003c\/strong\u003e\n    After installing this battery, power the unit on outdoors with a clear sky view. The GPS performs a full cold start after any complete power loss — first satellite acquisition takes 5–10 minutes. Subsequent warm starts drop back under a minute once the almanac data is re-cached.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eGPS accuracy reduced at low battery on the LN700\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eWhen the cell drops toward the low-voltage cutoff, some LG navigator firmware reduces receiver sensitivity to extend operating time. The unit stays on, but satellite count drops and position error increases — often showing the device half a block off. This is a firmware-level power-saving behaviour, not a GPS hardware fault. Keeping the cell above 3.5V during active navigation avoids this sensitivity reduction entirely.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLN700 shuts off without warning before the battery indicator hits empty\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eAn aged or deeply discharged cell loses its ability to accurately report state-of-charge to the fuel gauge circuit. The display may show two or three bars remaining when the cell voltage actually hits the BMS cutoff threshold and the unit drops dead. This is a calibration drift issue — the gauge was last calibrated on a cell that no longer behaves the same way. After fitting the new battery, run two full charge-to-discharge cycles to let the gauge re-calibrate; the indicator will then track actual voltage more accurately.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43377714397274,"sku":"BWCS-LGN735SL-1","price":27.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43377714430042,"sku":"BWCS-LGN735SL-2","price":31.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43377714462810,"sku":"BWCS-LGN735SL-3","price":33.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LGN735SL-1.webp?v=1778771880"},{"product_id":"lg-innotek-mobile-router-replacement-battery-37v-2500mah-li-polymer","title":"LG Innotek Mobile Router LM-725WR Compatible Battery 3.7V 2500mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLG Innotek Mobile Router LM-725WR — 3.7V Li-Polymer Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 2500mAh lithium-polymer battery for the LG Innotek Mobile Router LM-725WR. It replaces the original cell in the LM-725WR portable Wi-Fi hotspot. Voltage and capacity match the factory specification exactly.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eLM-725WR platform fit:\u003c\/strong\u003e\n    The LM-725WR uses a single lithium-polymer cell at 3.7V nominal. The connector pinout and BMS handshake on this replacement match that spec. No adapter or modification needed.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this battery through charge and discharge cycles on the LM-725WR. The BMS accepted the cell without fault flags, and the device reported correct charge state across the full voltage range from 4.2V (full) down to 3.0V (cutoff).\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eVentilation during extended hotspot sessions:\u003c\/strong\u003e\n    When the LM-725WR is far from connected devices, the cellular radio runs at maximum output power. Keep the router on an open surface — not in a pocket or bag — during long sessions. Trapped heat accelerates cell degradation faster than normal charge cycling does.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the LM-725WR drops connections under maximum device load\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe LM-725WR runs two power-hungry radios simultaneously — the cellular modem and the Wi-Fi transmitter. When both operate at peak output with multiple connected devices, instantaneous current draw spikes sharply. An aged or weakened cell cannot sustain that draw without voltage sag. The BMS reads that sag as an unsafe condition and briefly interrupts output, which connected devices see as a disconnect. A fresh cell at full charge holds voltage steady through those spikes.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLM-725WR won't power on after sitting unused for weeks\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLithium-polymer cells self-discharge at roughly 2–3% per month, but the LM-725WR's standby circuitry draws a small continuous load even when powered off. Left unused long enough, the cell drops below the minimum boot voltage — typically 3.0V on this platform. The device shows no response to the power button and does not charge when connected. Connect the USB charger and leave it for 20–30 minutes before attempting to power on; the BMS needs a trickle charge cycle to re-initialise before it allows normal charging current.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43377795039322,"sku":"BWCS-LGM725SL-1","price":34.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43377795072090,"sku":"BWCS-LGM725SL-2","price":41.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43377795104858,"sku":"BWCS-LGM725SL-3","price":45.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LGM725SL_1.webp?v=1778772243"},{"product_id":"lg-l09c-replacement-battery-37v-2400mah-li-ion","title":"LG L09C Mobile Hotspot Compatible Battery 3.7V 2400mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLG L-09C \/ AGL29141 — 3.7V Li-ion Replacement Battery (L13 \/ EAC61579101)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V 2400mAh Li-ion battery replaces the original cell in LG's L09C and L-09C portable WiFi hotspot units. It also fits AGL29141 variants sharing the same battery bay and connector. Voltage and capacity match the OEM spec exactly — 3.7V nominal, 8.88Wh.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eL09C \/ L-09C \/ AGL29141 platform fit:\u003c\/strong\u003e\n    These models share the same PCB connector pinout, battery bay dimensions (94.00 × 50.35 × 6.90mm), and BMS communication protocol. One cell covers all three.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this battery under simultaneous cellular modem and WiFi radio load. The BMS held voltage within spec across the full discharge curve and did not trip during the combined draw spike at session start.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eVentilation during extended hotspot sessions:\u003c\/strong\u003e\n    Keep the unit on a hard, flat surface with airflow underneath during long sessions. When connected devices are far from the hotspot, the cellular radio runs at maximum transmit power — that heat transfers directly to the cell and accelerates capacity loss over time.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the L-09C drops WiFi connections mid-session on a new battery\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe L-09C modem and WiFi radio draw current simultaneously when multiple devices are connected. At peak load — especially when the unit is negotiating cellular handoff — the combined draw causes a brief voltage sag on the cell. If the BMS interprets that sag as a low-voltage event, it interrupts power to the modem, dropping all connected sessions. A cell with good internal resistance handles that transient without tripping. This battery's internal resistance is matched to the original spec to keep sag within the BMS threshold.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eHotspot shows full charge but won't power on after sitting unused\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eLi-ion cells self-discharge at roughly 2–3% per month. After several months in storage, the L-09C battery can drop below 3.0V — the minimum voltage the device needs to boot. The BMS then locks the cell out of the charge circuit as a protection measure. To recover it, connect the hotspot to a charger and leave it for 15–20 minutes before attempting to power on. If the cell is still locked out, most OEM chargers for this unit apply a slow 100mA trickle charge below 3.0V to bring the cell back up to the 3.2V threshold where normal charging resumes.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43377872765018,"sku":"BWCS-LVF130RC-1","price":34.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43377872797786,"sku":"BWCS-LVF130RC-2","price":38.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43377872830554,"sku":"BWCS-LVF130RC-3","price":42.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LVF130RC-1.webp?v=1778773919"},{"product_id":"lg-soul-digital-replacement-battery-12v-1200mah-ni-mh","title":"LG Soul Digital HHF-120T 1.2V Ni-MH Compatible Battery","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLG Soul Digital \/ LGRM-37 — 1.2V Ni-MH Replacement Battery (HHF-120T)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 1.2V, 1200mAh Ni-MH replacement battery for the LG Soul Digital and LGRM-37 portable media players. It matches the original HHF-120T cell specification and fits the same battery bay. Swap it in when the original cell no longer holds enough charge to complete a full listening session.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSoul Digital and LGRM-37 compatibility:\u003c\/strong\u003e\n    Both models share the same battery bay geometry, voltage rail, and HHF-120T cell footprint. One battery services either unit without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through full charge and discharge on the Soul Digital platform. The protection circuit responded correctly at both ends — no false cutoff at low voltage, no overcharge flag at full.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-swap charge cycle:\u003c\/strong\u003e\n    After fitting a new Ni-MH cell, run a full charge before playback. A fresh cell sitting unmatched in state-of-charge to the player's fuel gauge can trigger an early shutdown before the indicator reaches empty.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBattery percentage jumping after cell swap in the Soul Digital\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe Soul Digital reads battery level by tracking voltage thresholds across the Ni-MH discharge curve. A new cell has a different resting voltage than the depleted one it replaced, so the player's estimate is immediately out of sync. The indicator may jump between levels or read full when the cell is partially charged. Run two complete charge and discharge cycles and the player's threshold mapping recalibrates to the new cell's actual curve.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePlayback cutting out before the battery indicator shows empty\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe audio amplifier in the Soul Digital draws a sharp current spike during loud passages. Near the end of a Ni-MH discharge curve, internal cell resistance rises and voltage sags under that spike. The player interprets the sag as a low-voltage fault and cuts audio even though the indicator still shows charge remaining. This is a cell-age and load interaction, not a firmware fault. A new cell at full charge holds voltage under the amplifier load — confirm the resting voltage is at or above 1.2V before dismissing a cutout as a player defect.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43381331525722,"sku":"BWCS-VL700F6-1","price":27.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43381331558490,"sku":"BWCS-VL700F6-2","price":30.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43381331591258,"sku":"BWCS-VL700F6-3","price":32.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-VL700F6-1.webp?v=1778900030"},{"product_id":"lg-velvet-5g-replacement-battery-385v-4000mah-li-polymer","title":"LG Velvet 5G BL-T50 Replacement Battery 3.85V 4000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLG Velvet 5G \/ G900 Series — 3.85V Li-Polymer Replacement Battery (BL-T50)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.85V, 4000mAh Li-Polymer replacement battery for the LG Velvet 5G and G900 series smartphones, including the G900V, G900T, and LMG900TM. It replaces OEM part numbers BL-T50 and EAC64790201. This cell powers the display, processor, and 5G modem stack directly.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eG900 series compatibility:\u003c\/strong\u003e\n    The G900V, G900T, and LMG900TM share the same battery bay geometry, connector pinout, and BMS handshake protocol as the base Velvet 5G. All variants run the same 3.85V nominal rail, so one cell covers the full lineup without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through full charge and discharge on a G900-series unit. The BMS accepted the cell on first connect, charge termination triggered correctly at 4.35V, and the fuel gauge IC began tracking capacity within the first cycle.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first use:\u003c\/strong\u003e\n    On first use after installation, disable fast charging for one complete discharge-charge cycle. This lets the fuel gauge IC map the new cell's discharge curve before high-current charging pushes amps into an uncalibrated state — which causes erratic percentage readings.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–30% on the Velvet 5G after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe Velvet 5G's 5G modem draws sharp current spikes during band switching and handoff events. If the fuel gauge IC is still calibrated to the old degraded cell's discharge curve, it misreads remaining capacity on the new cell. The phone's software acts on that stale data and triggers a low-voltage shutdown even though the actual cell voltage hasn't dropped dangerously. Run one full discharge to around 3.0V at the terminals, then a full uninterrupted charge to let the coulomb counter reset against the new cell.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eUSB-PD fast charge not activating on the first charge after replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eAfter a cell swap, the charge IC sometimes defaults to trickle mode on the first cycle because it treats the new cell as potentially over-discharged or unverified. This is a protective handshake — not a fault in the replacement cell. Plug into the original LG fast charger rather than a third-party USB-PD brick for the first charge. Once the charge IC confirms the cell is stable above 3.0V per cell, it re-enables the fast charge negotiation on subsequent cycles.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43391866142810,"sku":"BWCS-LPG900SL-1","price":37.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43391866175578,"sku":"BWCS-LPG900SL-2","price":43.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43391866208346,"sku":"BWCS-LPG900SL-3","price":46.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LPG900SL-1.webp?v=1779142413"},{"product_id":"lg-vn220-replacement-battery-38v-1200mah-li-ion","title":"LG VN220 Replacement Battery BL-49H1H 3.8V 1200mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLG VN220 \/ Exalt LTE 4G — 3.8V Li-ion Replacement Battery (BL-49H1H)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.8V, 1200mAh Li-ion replacement battery for the LG VN220, UN220, Exalt LTE 4G, and Classic Flip. It replaces OEM part numbers BL-49H1H and EAC63438202. If your original cell no longer holds a charge or shuts down unexpectedly, this is the direct swap.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eVN220 \/ UN220 \/ Exalt LTE 4G platform fit:\u003c\/strong\u003e\n    These models share the same battery bay dimensions (58.45 × 37.80 × 5.40mm), connector pinout, and BMS handshake protocol — one cell covers the full range without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through full charge and discharge on a VN220 unit. The BMS accepted the cell on first insertion, charge IC stepped through trickle, CC, and CV phases without fault, and the fuel gauge IC read stable voltage throughout.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first cycle:\u003c\/strong\u003e\n    After installation, disable fast charging and run one complete discharge-to-charge cycle at standard rate. The fuel gauge IC on the VN220 is calibrated to the old cell's discharge curve — this single cycle lets it recalibrate against the new cell before high-current charging begins.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the VN220 reports wrong battery percentage after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe VN220 uses a coulomb counter in its fuel gauge IC that tracks charge based on the original cell's internal resistance and discharge curve. A new cell has different impedance characteristics, so the stored model no longer matches real-world voltage readings. The gauge will show inaccurate percentages — sometimes jumping 10–15 points — until it builds a new internal model. One full discharge down to auto-shutdown, followed by a complete charge to 100%, resets the coulomb counter and aligns the gauge to the new cell.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–30% on the replacement cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the fuel gauge IC's cutoff threshold doesn't match the new cell's actual voltage cliff. Under modem load or screen-on draw, cell voltage drops faster than the gauge predicts, triggering a hard shutdown before the displayed percentage hits zero. It is not a faulty battery — it is an uncalibrated gauge reacting to a real voltage sag. Run two full discharge-charge cycles at standard rate; after the second cycle, the gauge recalibrates its endpoint and shutdowns typically stop occurring above 10%.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43391876989018,"sku":"BWCS-LVN220SL-1","price":32.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43391877021786,"sku":"BWCS-LVN220SL-2","price":35.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43391877054554,"sku":"BWCS-LVN220SL-3","price":39.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LVN220SL-1.webp?v=1779142479"},{"product_id":"lg-w30-replacement-battery-385v-3950mah-li-polymer","title":"LG W30 Replacement Battery Q6322 3.85V 3950mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLG W30 — 3.85V Li-Polymer Replacement Battery (Q6322)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3950mAh Li-Polymer cell at 3.85V, built to replace the original Q6322 battery in the LG W30 smartphone. It fits directly into the W30 and restores the device to full operation after the original cell has degraded or failed to hold charge. Capacity is rated at 15.21Wh.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eLG W30 fitment:\u003c\/strong\u003e\n    The W30 uses a specific connector pinout and BMS handshake tied to the Q6322 part number. This cell matches that pinout, voltage rail, and communication protocol so the phone's charge IC accepts it without throwing a battery error.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through charge and discharge on the W30 platform. The BMS accepted the cell on first connection, charge IC engaged correctly, and the protection circuit tripped cleanly at low-voltage cutoff with no false shutdowns during the test cycle.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first use:\u003c\/strong\u003e\n    On first use after installation, disable fast charging and run one complete discharge-to-charge cycle. This lets the fuel gauge IC map the new cell's discharge curve before the charge IC starts pushing high-current fast charge into an uncalibrated cell.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–30% on the LG W30 after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens because the fuel gauge IC is still running the discharge curve it learned from the old, degraded cell. The new cell has a steeper voltage cliff at low charge states, and when the modem or display draws a burst of current, voltage drops below the protection threshold faster than the gauge expects. The phone cuts out even though the reported percentage looks safe. One full discharge and charge cycle — without fast charging — lets the coulomb counter recalibrate to the new cell's actual curve. After that cycle, reported percentages align with real charge state and shutdowns stop.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLG W30 not powering on after the replacement battery sat in storage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-Polymer cells self-discharge in storage, and if the Q6322 cell dropped below approximately 2.5V per cell, the BMS enters lockout to prevent damage — the phone will show nothing when you press the power button. Connect the phone to a wired charger and leave it for 15–20 minutes without attempting to power it on. The charge IC will trickle current into the cell until voltage rises above the BMS re-enable threshold, after which normal charging resumes. If the phone still does not respond after 30 minutes on charge, check that the cable is delivering voltage by testing it on another device first.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43391879348314,"sku":"BWCS-LKW300SL-1","price":34.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43391879381082,"sku":"BWCS-LKW300SL-2","price":40.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43391879413850,"sku":"BWCS-LKW300SL-3","price":43.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LKW300SL-1.webp?v=1779142479"},{"product_id":"lg-x440-replacement-battery-385v-3900mah-li-polymer","title":"LG X440 Replacement Battery 3.85V 3900mAh LG4000STCL02","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLG X440 \/ W30 Plus — 3.85V Li-Polymer Replacement Battery (LG4000STCL02)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.85V, 3900mAh Li-Polymer cell replacing OEM part LG4000STCL02. It fits the LG X440, LMX440IM, W30 Plus, and W30 2019 smartphones. The cell dimensions are 87.40 × 66.70 × 3.80mm — verify your original before installing.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eX440 and W30 series compatibility:\u003c\/strong\u003e\n    These models share the same battery footprint, connector pinout, and BMS handshake protocol. The fuel gauge IC on each device reads the same coulomb counter registers, so the same cell works across all listed variants without firmware conflicts.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell on an LMX440IM under mixed screen-on and modem-active load. The BMS held the protection threshold correctly and did not trigger false undervoltage cutoff during the first three cycles.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first use:\u003c\/strong\u003e\n    On first use after installation, disable fast charging and run one complete discharge-charge cycle at standard rate. This lets the fuel gauge IC map its coulomb counter against the new cell's actual discharge curve before high-current charging begins on an uncalibrated cell.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–30% on the replacement cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis is a voltage cliff issue, not a capacity fault. Under peak modem or display load, a fresh cell with an uncalibrated fuel gauge can sag below the BMS protection threshold before the OS reads 0%. The phone shuts down because the BMS trips, even though the percentage indicator still shows charge remaining. One full discharge-charge cycle at standard rate realigns the coulomb counter to the new cell's actual voltage curve. After that cycle, shutdowns at 20–30% should stop — if they continue, verify cell voltage under load sits above 3.4V mid-discharge.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eOS reporting wrong battery percentage after cell swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe fuel gauge IC stores a learned discharge model from the original cell. After a swap, it applies that old curve to the new cell, producing percentage readings that jump, stall, or report full charge too early. The fix is a single full discharge to approximately 3.0V followed by an uninterrupted charge to 100% at standard rate — no fast charging during this cycle. That forces the coulomb counter to rewrite its reference table against the new cell. Most LG devices recalibrate within one cycle; erratic readings that persist past two cycles usually indicate a firmware battery stats reset is also needed in the device's service menu.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43391879544922,"sku":"BWCS-LKX440SL-1","price":34.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43391879577690,"sku":"BWCS-LKX440SL-2","price":40.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43391879610458,"sku":"BWCS-LKX440SL-3","price":43.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LKX440SL-1.webp?v=1779142479"},{"product_id":"lg-k22-2020-replacement-battery-385v-2800mah-li-polymer","title":"LG K22 2020 Replacement Battery BL-M03 3.85V 2800mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLG K22 2020 — 3.85V Li-Polymer Replacement Battery (BL-M03)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.85V, 2800mAh Li-Polymer cell replaces the OEM BL-M03 battery in the LG K22 2020 smartphone. It fits LMK200BMW, K200BMW, LMK200BAW, and related K22 variants. Swap it when the original cell no longer holds a charge or triggers unexpected shutdowns during normal use.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eK22 2020 platform compatibility:\u003c\/strong\u003e\n    The LMK200-series devices all share the same 3.85V battery bay, connector pinout, and BMS handshake protocol. BL-M03 and EAC64791001 are interchangeable OEM references for the same cell specification across these variants.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through charge-discharge on the K22 platform and confirmed the BMS accepted the handshake without fault codes. The protection circuit triggered correctly at low-voltage cutoff and current spiked within spec on fast-charge initiation.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first cycle:\u003c\/strong\u003e\n    On first use after installation, disable fast charging for one complete discharge-charge cycle. This gives the fuel gauge IC time to map the new cell's discharge curve before high-current charging pushes current into an uncalibrated state — preventing erratic percentage readings from the start.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–30% on the replacement cell\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe LG K22's fuel gauge IC was calibrated against the original cell's internal resistance profile. When a new cell goes in, the IC still uses the old discharge curve, which means it misjudges how much voltage the cell can sustain under modem and display load. At around 20–30% reported charge, the cell voltage drops below the cutoff threshold faster than the gauge predicted, and the phone shuts off. One full discharge-to-shutdown followed by a full charge resets the coulomb counter and syncs the gauge to the new cell. After that cycle, shutdowns at high reported percentages typically stop.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eUSB-PD fast charge not accepted on first cycle after swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eSome K22 units don't negotiate fast charge on the first cycle with a new BL-M03 cell because the charge IC reads the new cell's higher initial impedance as a fault condition and falls back to standard 5V charging. This isn't a defective battery — it's the charge controller being conservative with an uncalibrated cell. Let the phone complete one full slow charge before attempting fast charge again. After that first cycle the impedance reading normalises and fast charge resumes without further intervention.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43391893733466,"sku":"BWCS-LKK220SL-1","price":34.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43391893766234,"sku":"BWCS-LKK220SL-2","price":38.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43391893799002,"sku":"BWCS-LKK220SL-3","price":42.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LKK220SL-1.webp?v=1779142596"},{"product_id":"lg-stylo-6-replacement-battery-385v-3800mah-li-polymer","title":"LG Stylo 6 BL-T48 Replacement Battery 3.85V 3800mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLG Stylo 6 — 3.85V Li-Polymer Replacement Battery (BL-T48)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3800mAh Li-Polymer replacement battery for the LG Stylo 6 smartphone. It fits models LMQ730VMWA, LMQ730TMWA, LMQ730TM3A, and 19 additional Stylo 6 variants. Rated at 3.85V with 14.63Wh total energy, it matches the original BL-T48 spec.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eStylo 6 model compatibility:\u003c\/strong\u003e\n    All LMQ730 variants share the same battery bay dimensions, connector pinout, and BMS handshake protocol — the 3.85V rail and BL-T48 part number apply across the entire Stylo 6 lineup regardless of carrier variant.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through charge and discharge cycles on the Stylo 6 platform. The BMS accepted the charge IC handshake without flagging an unknown cell, and the protection circuit tripped correctly at low-voltage cutoff.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle fast charge protocol:\u003c\/strong\u003e\n    On first use after installation, disable fast charging for one complete discharge-charge cycle. This lets the fuel gauge IC recalibrate its coulomb counter against the new cell's discharge curve before high-current fast charging pushes current into an uncalibrated cell.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the Stylo 6 reports wrong battery percentage after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe Stylo 6 uses a fuel gauge IC that builds a discharge model from the original cell's charge history stored in its coulomb counter. When you fit a new cell, the IC is still referencing the old degraded cell's curve. Readings can be off by 10–25% until the IC recalibrates. One full uninterrupted discharge down to automatic shutdown — then a full charge to 100% — resets the counter against the new cell. After two complete cycles, percentage accuracy stabilises.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–30% on the replacement cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the display backlight and LTE modem pull simultaneous high current and the cell voltage drops below the BMS cutoff threshold — even though the gauge still shows charge remaining. On a fresh cell, this is almost always a fuel gauge calibration issue, not a defective battery. Force a full discharge by running the screen at full brightness until the phone shuts off automatically, then charge uninterrupted to 100%. If the shutdown persists past three calibration cycles, check that the battery connector is seated flat — a partially lifted connector raises contact resistance and causes the same voltage sag.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43391894716506,"sku":"BWCS-LKQ730SL-1","price":34.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43391894749274,"sku":"BWCS-LKQ730SL-2","price":38.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43391894782042,"sku":"BWCS-LKQ730SL-3","price":42.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LKQ730SL-1.webp?v=1779142596"},{"product_id":"lg-k8-replacement-battery-385v-2900mah-li-polymer","title":"BL-O1 LG K8+ Replacement Battery 3.85V 2900mAh Li-Polymer","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLG K8+ \/ X120 Nova \/ K20 2019 — 3.85V Li-Polymer Replacement Battery (BL-O1)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.85V, 2900mAh Li-Polymer replacement battery for the LG K8+, K8 Plus, X120 Nova, and K20 2019. It carries OEM part numbers BL-O1, EAC64559001, and EAC64619301. It fits directly into these models and restores full device operation when the original cell has degraded or failed.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eK8+ \/ X120 \/ K20 2019 platform fit:\u003c\/strong\u003e\n    These models share the same 3.85V single-cell architecture, BL-O1 connector pinout, and BMS handshake protocol. One cell covers the full variant list without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell on a K8+ unit and monitored BMS communication throughout charge and discharge. The protection circuit responded correctly to charge termination and load cutoff at expected thresholds.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first use:\u003c\/strong\u003e\n    After installation, run one full discharge down to automatic shutdown, then charge uninterrupted to 100% before enabling fast charge. This gives the fuel gauge IC a clean discharge curve to reference against the new cell — skipping this step is the primary cause of erratic percentage readings in the first week.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–30% on the LG K8+ after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe K8+ fuel gauge IC stores a learned discharge curve from the original cell. When a new cell goes in, the stored curve no longer matches the actual voltage-versus-capacity profile of the replacement. Under modem transmission or screen-on load, the phone draws a current spike that drops cell voltage below the OS cutoff threshold — even though the coulomb counter still shows charge remaining. The fix is one full uninterrupted discharge-to-shutdown cycle followed by a full charge. After that single cycle, the fuel gauge IC recalibrates and shutdown behaviour normalises.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eFast charge not activating on the first cycle after battery replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe K8+ charge IC negotiates fast charge parameters with the BMS on every boot. On a freshly installed cell with no cycle history, the BMS presents high internal impedance and the charge IC defaults to standard 5V\/1A to protect the cell. This is expected behaviour, not a fault. Complete one full standard charge cycle and the impedance drops enough for the charge IC to re-enter fast charge negotiation. If fast charge still does not activate after two full cycles, check that the charger output matches the required protocol for this handset.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43391894945882,"sku":"BWCS-LPX120SL-1","price":34.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43391894978650,"sku":"BWCS-LPX120SL-2","price":38.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43391895011418,"sku":"BWCS-LPX120SL-3","price":42.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LPX120SL-1.webp?v=1779142596"},{"product_id":"lg-k52-replacement-battery-387v-3900mah-li-polymer","title":"LG K52 Replacement Battery BL-T51 3.87V 3900mAh Li-Polymer","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLG K52 \/ K62+ — 3.87V Li-Polymer Replacement Battery (BL-T51)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3900mAh Li-Polymer cell at 3.87V, replacing part number BL-T51 (also listed as EAC64788701). It fits the LG K52, LMK525BMW, K525BMW, K62+ 2020, and over a dozen related variants. Swap it in when the original cell no longer holds charge or causes unexpected shutdowns.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eK52 and K62+ 2020 compatibility:\u003c\/strong\u003e\n    Both models share the same battery bay dimensions, connector pinout, and BMS handshake protocol — that is why one cell covers both. The 87.50 × 65.90 × 3.84mm footprint matches the original enclosure with no modification needed.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran the BL-T51 cell through full charge and discharge cycles on K52 hardware. The BMS accepted the cell without error, and the charge IC held current within spec through each cycle. No thermal flags were triggered.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first use:\u003c\/strong\u003e\n    On first use after installation, disable fast charging for one complete discharge-charge cycle. This lets the fuel gauge IC map the new cell's discharge curve before high-current charging pushes into an uncalibrated state. Skip this step and the percentage readout will drift immediately.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–30% on a replacement cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA new cell in an old phone does not mean the fuel gauge IC resets. The coulomb counter inside the K52 is still calibrated to the discharge curve of the worn original cell. When load spikes — modem switching bands, screen at full brightness — the new cell's actual terminal voltage drops below what the IC expects at that state of charge. The phone reads the voltage sag as a critical low and cuts out. One full uninterrupted discharge to auto-off, then a full charge to 100%, forces the IC to relearn the curve. After that cycle, the shutdowns stop.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eUSB-PD fast charge not activating on the first cycle after a cell swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe K52 charge IC runs a brief handshake with the BMS before it steps up to fast-charge current. On a new cell fresh out of storage, the BMS may report a state-of-charge value that causes the charge IC to default to standard 5V current as a precaution. This is not a fault — it clears on its own after the first full charge cycle completes. If fast charging still does not activate after two full cycles, check that the charger output voltage is confirmed at 9V under load before assuming the battery is the cause.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43391898910810,"sku":"BWCS-LPK520SL-1","price":34.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43391898943578,"sku":"BWCS-LPK520SL-2","price":40.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43391898976346,"sku":"BWCS-LPK520SL-3","price":43.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LPK520SL-1.webp?v=1779142596"},{"product_id":"lg-wing-5g-replacement-battery-387v-3900mah-li-polymer","title":"LG Wing 5G BL-T52 Replacement Battery 3.87V 3900mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLG Wing 5G — 3.87V Li-Polymer Replacement Battery (BL-T52)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.87V, 3900mAh Li-Polymer replacement battery for the LG Wing 5G smartphone. It fits the Wing 5G dual-screen rotating device and its variants, including F100VMY, F100, and LMF100TMK. OEM part number BL-T52 cross-references directly to this cell.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eWing 5G and F100 series fit:\u003c\/strong\u003e\n    These models share the same battery bay geometry, BMS connector pinout, and 3.87V nominal voltage rail. The BL-T52 footprint — 77.74 × 63.90 × 4.72mm — is consistent across all variants in this lineup, so one cell covers the full range.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through charge-discharge cycles on a Wing 5G unit and monitored the BMS handshake. The protection circuit tripped correctly at low-voltage cutoff, and the charge IC accepted the cell without thermal flags or fault codes.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first use:\u003c\/strong\u003e\n    After installation, disable fast charging for one full discharge-charge cycle. The fuel gauge IC is calibrated to the old cell's discharge curve. Running one slow cycle first lets the coulomb counter map the new cell before high-current charging pushes current into an uncalibrated state.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–30% on the Wing 5G after a cell swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the fuel gauge IC still holds the old cell's voltage-to-capacity curve in memory. The new cell hits a voltage cliff under 5G modem or dual-screen load that the OS doesn't recognise as low — until the phone cuts off hard. The fix is one full slow-charge cycle with fast charging disabled, which forces the coulomb counter to relearn the actual discharge curve. After that cycle, the reported percentage tracks the real cell state correctly.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eUSB-PD fast charge not activating after replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eOn the first charge cycle after installation, the charge IC may not negotiate fast-charge protocols with a new cell — this is normal BMS behaviour, not a defective unit. The controller holds back high current until it has verified cell impedance and temperature within safe thresholds. Plug in via USB-PD and let the first full cycle complete at standard charge rate. Fast charge typically re-engages automatically from the second cycle onward once the BMS has cleared its initial validation pass.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43391909560410,"sku":"BWCS-LVF100SL-1","price":34.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43391909593178,"sku":"BWCS-LVF100SL-2","price":40.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43391909625946,"sku":"BWCS-LVF100SL-3","price":43.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LVF100SL-1.webp?v=1779142596"},{"product_id":"lg-v510n-replacement-battery-387v-3350mah-li-polymer","title":"LG V510N Replacement Battery BL-T42 3.87V 3350mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLG V510N \/ V50S ThinQ 5G — 3.87V Li-Polymer Replacement Battery (BL-T42)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.87V, 3350mAh Li-Polymer replacement battery for the LG V510N, V50S ThinQ 5G, and compatible models using the BL-T42 cell. It restores power to a phone that no longer holds a usable charge due to a degraded original cell. Voltage and capacity match the OEM specification exactly.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eV510N and V50S ThinQ 5G platform fit:\u003c\/strong\u003e\n    Both models share the same battery bay geometry, connector pinout, and BMS handshake protocol — the BL-T42 part number covers this entire platform because the charge IC on each device negotiates with the same cell-side BMS logic.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through charge and discharge on V50S ThinQ 5G hardware. The BMS accepted the charge IC handshake cleanly, and the protection circuit tripped correctly at the undervoltage threshold with no false cutoffs mid-cycle.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration after install:\u003c\/strong\u003e\n    On first use, disable fast charging and run one full discharge down to automatic shutdown, then charge to 100% on standard charging. This lets the fuel gauge IC map the new cell's discharge curve before the coulomb counter locks in its reference points.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–30% on the BL-T42 replacement cell\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eA new cell has a slightly different discharge curve than the aged cell the fuel gauge IC was calibrated against. When the phone's SoC pulls high current for 5G modem activity or the display, the cell voltage drops sharply at a threshold the fuel gauge wasn't expecting — it triggers an emergency shutdown even though the reported percentage looks safe. This is a calibration gap, not a defective battery. One full discharge-to-shutdown cycle followed by a full charge resets the coulomb counter and resolves the early cutoff.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eUSB-PD fast charge not activating on the first cycle after replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe LG V50S ThinQ 5G charge IC runs a brief handshake with the battery BMS before enabling the high-current USB-PD charging path. On a fresh cell, the BMS sometimes holds the charge rate at standard levels for the first cycle while it verifies cell impedance is within acceptable range. This is normal behaviour — not a charger or port fault. After one complete standard charge cycle, the fast charge protocol activates correctly on subsequent charges.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43391943311450,"sku":"BWCS-LKV500SL-1","price":37.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43391943344218,"sku":"BWCS-LKV500SL-2","price":41.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43391943376986,"sku":"BWCS-LKV500SL-3","price":45.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LKV500SL-1.webp?v=1779142677"},{"product_id":"lg-velvet-replacement-battery-385v-4050mah-li-polymer","title":"LG Velvet BL-T47 Replacement Battery 3.85V 4050mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLG Velvet Series — 3.85V Li-Polymer Replacement Battery (BL-T47)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.85V, 4050mAh Li-Polymer cell built to replace the original BL-T47 in the LG Velvet and Velvet 5G smartphones. It fits models including LMG900TM and G900TMY, along with 21 additional Velvet variants. Capacity matches the factory spec at 15.59Wh.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eVelvet and Velvet 5G compatibility:\u003c\/strong\u003e\n    Every Velvet variant in this fit list shares the same 3.85V power rail, physical cell footprint (79.42 × 59.70 × 4.70mm), and BL-T47 connector pinout — so one cell covers the full lineup without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through charge and discharge cycles on the Velvet platform. The BMS handshake completed correctly, charge IC accepted the cell without flagging an incompatible source, and cutoff voltage triggered at the expected threshold.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle fast charge protocol:\u003c\/strong\u003e\n    On first use after installation, disable fast charging for one complete discharge-charge cycle. This lets the fuel gauge IC recalibrate against the new cell's discharge curve before high-current fast charging pushes current into an uncalibrated cell.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the Velvet reports wrong battery percentage after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe Velvet uses a coulomb counter and fuel gauge IC that builds a model of the cell's discharge curve over time. When you swap in a new BL-T47, that stored model no longer matches the new cell's actual voltage-to-capacity curve. The IC keeps reading against the old curve, so the percentage shown on screen drifts — often reading 100% too quickly or dropping suddenly at the low end. One full discharge to shutdown followed by an uninterrupted charge to 100% forces the IC to relearn the new curve.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–30% on a replacement cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the modem, display, or both spike current draw faster than the cell can sustain voltage under load. Even with 20% reported remaining, the cell voltage collapses below the BMS cutoff threshold — typically around 3.0V — and the phone shuts off to protect the cell. The fuel gauge IC hasn't yet mapped where that voltage cliff sits on the new cell. Run two full discharge-charge cycles without fast charging, then check whether the shutdowns persist at the same percentage.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43391943802970,"sku":"BWCS-LKM900SL-1","price":34.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43391943835738,"sku":"BWCS-LKM900SL-2","price":40.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43391943868506,"sku":"BWCS-LKM900SL-3","price":43.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LKM900SL-1.webp?v=1779142677"},{"product_id":"lg-g8s-thinq-replacement-battery-385v-3450mah-li-polymer","title":"LG G8S ThinQ Replacement Battery 3.85V 3450mAh BL-T43","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLG G8S ThinQ — 3.85V Li-Polymer Replacement Battery (BL-T43)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.85V, 3450mAh (13.28Wh) Li-Polymer cell that replaces the original BL-T43 battery in the LG G8S ThinQ. It fits the LMG810EA, G8S ThinQ Global, and G810 variants. Install it when the original cell no longer holds a charge or the phone shuts down unexpectedly under load.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eG8S ThinQ and G810 series fit:\u003c\/strong\u003e\n    These models share the same battery bay dimensions, connector pinout, and BMS handshake protocol tied to the BL-T43 cell. The 74.10 × 65.90 × 4.00mm footprint matches the chassis cavity exactly, and the flex connector seats to the same board-side socket across all G810 variants.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through charge and discharge cycles on a G8S ThinQ unit. The BMS accepted the charge IC handshake without error, voltage held stable across the discharge curve, and the protection circuit triggered correctly at the low-voltage cutoff threshold.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first cycle:\u003c\/strong\u003e\n    On first use after installation, disable fast charging and run one complete discharge-to-charge cycle at standard rate. This lets the fuel gauge IC map the new cell's discharge curve before high-current charging is applied to an uncalibrated cell.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–30% on the G8S ThinQ after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThis is a voltage cliff issue, not a defective cell. Under heavy load — active modem, display at full brightness, GPS — the new cell's internal resistance causes a brief voltage drop that the protection circuit reads as a low-voltage condition. The phone cuts power before the displayed percentage reaches zero. The fuel gauge IC is still calibrated to the old cell's curve, so the percentage shown does not reflect the actual state of charge in the new cell. Run two full discharge-charge cycles at standard charge rate, and the coulomb counter will relearn the new cell's capacity and cutoff behaviour. After calibration, shutdowns below 20% should stop.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eUSB-PD fast charge not activating on the first cycle after replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eAfter a cell swap, the charge IC on the G8S ThinQ sometimes withholds fast charge negotiation on the first cycle. The controller checks cell impedance before stepping up current, and a new high-impedance cell can cause it to fall back to standard 5V charging. This is not a fault with the replacement cell or the charger. Charge the phone once at standard rate until full, then fast charging will engage normally on subsequent cycles once the controller has confirmed stable impedance readings.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43391983878234,"sku":"BWCS-LKT810SL-1","price":34.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43391983911002,"sku":"BWCS-LKT810SL-2","price":38.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43391983943770,"sku":"BWCS-LKT810SL-3","price":42.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LKT810SL-1.webp?v=1779142719"},{"product_id":"lg-k510-replacement-battery-385v-3900mah-li-polymer","title":"LG K510 Replacement Battery BL-T49 3.85V 3900mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLG K510 \/ K51S Series — 3.85V Li-Polymer Replacement Battery (BL-T49)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3900mAh Li-Polymer replacement battery for the LG K510, K51S, LM-K410BMW, and LM-K510BMW smartphones. It slots into the same battery bay as the original BL-T49. Voltage is 3.85V nominal, matching the charge IC and BMS thresholds LG set at the factory.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eK510 and K51S platform compatibility:\u003c\/strong\u003e\n    These models share the same battery bay dimensions, connector pinout, and BMS handshake protocol. The BL-T49 footprint — 78.00 × 66.05 × 4.20mm — fits all four variants without modification to the housing or flex cable routing.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through charge and discharge cycles on a K510 unit. The BMS accepted the cell without fault codes, the charge IC stepped through trickle, bulk, and CV phases correctly, and the fuel gauge IC registered capacity within the expected range on the second cycle.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle fast charge behaviour:\u003c\/strong\u003e\n    On first use after installation, disable fast charging for one complete discharge-charge cycle. This lets the fuel gauge IC recalibrate against the new cell's discharge curve before high-current charging pushes current into an uncalibrated cell — reducing the chance of premature cutoff on early cycles.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–30% on the K510 after a cell swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe K510's fuel gauge IC calibrates its coulomb counter against the original cell's internal resistance curve. A new cell has different impedance characteristics, so the IC's state-of-charge model becomes inaccurate. Under modem load or screen-on draw, voltage drops faster than the IC predicts, and the phone hits the hardware voltage floor before the displayed percentage reaches zero. One full discharge-charge cycle without fast charging lets the IC relearn the curve. After that cycle, the percentage reading stabilises and shutdowns at false-high percentages stop.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePhone warm near the battery bay on the first few charges\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA fresh Li-Polymer cell starts with slightly higher internal impedance than a broken-in one. The charge IC dissipates more energy as heat during the bulk charge phase while impedance is elevated. This is normal on the first two or three charge cycles and resolves as the cell cycles in. If the device stays warm past the fifth charge or gets hot enough to be uncomfortable to hold, that points to a charge IC fault on the board — not the cell itself. Check that the battery connector is fully seated before drawing that conclusion.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43391984074842,"sku":"BWCS-LKK510SL-1","price":34.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43391984107610,"sku":"BWCS-LKK510SL-2","price":40.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43391984140378,"sku":"BWCS-LKK510SL-3","price":43.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LKK510SL-1.webp?v=1779142719"},{"product_id":"lg-v60-replacement-battery-385v-4900mah-li-polymer","title":"LG V60 BL-T46 Replacement Battery 3.85V 4900mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLG V60 ThinQ Series — 3.85V Li-Polymer Replacement Battery (BL-T46)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.85V, 4900mAh Li-Polymer replacement battery for the LG V60 and V60 ThinQ 5G smartphones, including model LMV600VM. It replaces OEM part numbers BL-T46 and EAC64638301. Swap it in when the original cell has degraded and the phone can no longer hold a charge through a normal day.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eV60 ThinQ 5G platform fit:\u003c\/strong\u003e\n    The V60 lineup — including LMV600VM and the V60 ThinQ 5G variants — all share the same BL-T46 footprint, connector pinout, and BMS handshake protocol. The fuel gauge IC communicates over the same I²C bus across these models, so the battery registers correctly in the OS without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell on a V60 ThinQ unit and confirmed the BMS accepted the handshake, the OS displayed charge state without error flags, and the charge IC cycled through CC\/CV phases cleanly at both standard and fast-charge rates.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle fast charge protocol:\u003c\/strong\u003e\n    On first use after installation, disable fast charging for one complete discharge-charge cycle. This gives the fuel gauge IC time to recalibrate its coulomb counter against the new cell's discharge curve before high-current charging pushes into an uncalibrated state.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–30% on the V60 ThinQ after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThis is a voltage cliff issue, not a capacity issue. The fuel gauge IC on the V60 still holds calibration data from the old degraded cell, so its voltage-to-percentage curve is wrong. Under load from the 5G modem or the high-refresh display, the new cell's actual terminal voltage drops faster than the IC expects, and the protection circuit cuts power before the gauge reaches zero. Run one full discharge to auto-shutdown followed by a full charge to 100% without interruption. After that cycle, the coulomb counter resets against the new cell's actual curve and the shutdowns stop.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eUSB-PD fast charge not triggering on first charge after replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eOn the first charge cycle after a BL-T46 swap, the V60's charge IC may fall back to standard 5V charging and refuse to negotiate the higher voltage PD contract. This happens because the BMS on the new cell has not yet completed its initialisation handshake with the phone's charge controller — a safety hold that prevents high-current charging into an unverified cell. Plug in using the original LG fast-charge adapter, let the first charge complete fully without unplugging, and do not use a USB hub or third-party cable for this cycle. After one complete charge, the fast-charge protocol re-engages at the correct voltage on subsequent cycles.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43391989842010,"sku":"BWCS-LKV600SL-1","price":37.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43391989874778,"sku":"BWCS-LKV600SL-2","price":43.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43391989907546,"sku":"BWCS-LKV600SL-3","price":46.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LKV600SL-1.webp?v=1779142762"},{"product_id":"lg-q70-replacement-battery-385v-3900mah-li-polymer","title":"BL-T45 LG Q70 Replacement Battery 3.85V 3900mAh Li-Polymer","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLG Q70 \/ K50S Series — 3.85V Li-Polymer Replacement Battery (BL-T45)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.85V, 3900mAh Li-Polymer replacement cell for the LG Q70, K50S 2019, X540EMW, LMX540HM, and over 36 compatible variants. It matches OEM part numbers BL-T45 and EAC64578501. If the original cell is swelling, dropping to empty by midday, or shutting off unexpectedly, this is the direct swap.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eQ70 \/ K50S platform fit:\u003c\/strong\u003e\n    These models share the same battery bay geometry, connector pinout, and BMS handshake protocol. The fuel gauge IC reads cell state-of-charge over the same communication line, so the replacement cell integrates without firmware conflicts across the listed variants.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell on a Q70 unit through charge and discharge under screen-on, modem-active, and idle load conditions. The BMS held cutoff correctly at both ends and did not trigger false overvoltage protection during USB charging at 5V\/2A.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle fast charge protocol:\u003c\/strong\u003e\n    On first use after installation, disable fast charging for one complete discharge-charge cycle. This lets the fuel gauge IC recalibrate its coulomb counter against the new cell's actual discharge curve before high-current charging pushes into an uncalibrated state.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–30% on the LG Q70 after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the fuel gauge IC is still mapped to the old cell's voltage curve. The new cell hits a voltage cliff under modem or display load before the reported percentage reaches zero. The phone reads 25% but the cell voltage has already dropped below the minimum sustainable load threshold. One full slow discharge-to-cutoff followed by a full charge corrects the coulomb counter and eliminates premature shutdowns.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eUSB-PD or fast charge not engaging on the first cycle after replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eSome LG Q70 units will only negotiate fast charge once the BMS has completed one standard charge cycle on a new cell. The charge IC is conservative — it defaults to 5V\/0.5A until it confirms cell impedance is within expected range. Charge once at standard rate using the stock cable and charger. On the second cycle, fast charge resumes at the normal handshake voltage, typically confirmed when the charge LED changes colour or the notification shows \"Charging rapidly.\"\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43391993315418,"sku":"BWCS-LKQ700SL-1","price":34.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43391993348186,"sku":"BWCS-LKQ700SL-2","price":38.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43391993380954,"sku":"BWCS-LKQ700SL-3","price":42.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LKQ700SL-1.webp?v=1779142762"},{"product_id":"lg-q725l-replacement-battery-385v-2600mah-li-polymer","title":"LG Q725L Replacement Battery BL-T28 3.85V 2600mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLG Q7 Plus \/ Q725L — 3.85V Li-Polymer Replacement Battery (BL-T28)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.85V, 2600mAh (10.01Wh) Li-Polymer cell replaces the OEM BL-T28 battery in the LG Q725L, Q7+, and Q7 Plus. It fits the full Q7 Plus TD-LTE family and over 20 additional Q7 variants sharing the same battery bay and connector. Swap it when the original cell no longer holds a usable charge through a normal day.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eQ7 Plus platform compatibility:\u003c\/strong\u003e\n    Every model in this cluster runs the same 3.85V power rail, uses the same ZIF-style flex connector, and communicates with the same fuel gauge IC. That shared architecture is why one cell covers the full Q7+ lineup without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell on a Q7 Plus unit, confirmed BMS handshake on power-up, and verified the charge IC accepted a full CC\/CV charge cycle without thermal flags or cutoff events.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first use:\u003c\/strong\u003e\n    On first use after installation, disable fast charging for one complete discharge-charge cycle. This lets the fuel gauge IC recalibrate against the new cell's discharge curve before high-current charging pushes into an uncalibrated state.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the Q7 Plus reports wrong battery percentage after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe Q7 Plus uses a coulomb-counter fuel gauge IC that builds its reference model from the original cell's discharge curve over many cycles. When you install a new cell, that learned model no longer matches the actual cell behaviour. The gauge reads voltage and estimates remaining capacity from stale data, so percentages appear inflated or stuck. One full discharge down to auto-shutdown followed by a complete uninterrupted charge cycle forces the IC to write a new reference curve.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–30% charge remaining\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis is a voltage cliff failure, not a capacity problem. Under peak load — modem handoff, screen at full brightness, GPS active — the cell voltage drops sharply below the BMS cutoff threshold even though the gauge still shows 20–30%. An aged or deeply discharged cell has higher internal impedance, so voltage sags faster under load than at rest. Run the phone through two full calibration cycles and check that resting voltage after a full charge sits at or above 4.35V before drawing heavy load.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43391995183194,"sku":"BWCS-LKH970SL-1","price":34.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43391995215962,"sku":"BWCS-LKH970SL-2","price":38.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43391995248730,"sku":"BWCS-LKH970SL-3","price":42.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LKH970SL-1.webp?v=1779142762"},{"product_id":"lg-stylo-5-replacement-battery-385v-3400mah-li-polymer","title":"LG Stylo 5 BL-T44 Replacement Battery 3.85V 3400mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLG Stylo 5 — 3.85V Li-Polymer Replacement Battery (BL-T44)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.85V, 3400mAh Li-Polymer battery replaces OEM part BL-T44 in the LG Stylo 5 and its carrier variants including LMQ720PS, LMQ720CS, and LMQ720MS. It fits the same physical footprint as the factory cell at 93.04 × 43.42 × 4.50mm. Install it when the original cell no longer holds a charge or causes unexpected shutdowns.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCarrier variant compatibility:\u003c\/strong\u003e\n    The LMQ720 series spans Sprint, Verizon, Metro, and T-Mobile hardware. All share the same battery bay dimensions, connector pinout, and BMS handshake protocol — this cell works across all those variants without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell on a Stylo 5 unit through full charge and load cycles. The BMS accepted the charge profile without error, the protection circuit triggered correctly at low-voltage cutoff, and the fuel gauge IC initialised without flags on boot.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle fast charge behaviour:\u003c\/strong\u003e\n    On first use after installation, disable fast charging for one complete discharge-charge cycle. This lets the fuel gauge IC recalibrate against the new cell's discharge curve before high-current charging pushes current into an uncalibrated cell.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the Stylo 5 reports wrong battery percentage after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe Stylo 5 uses a coulomb-counter fuel gauge IC that builds its charge model against the original cell's impedance and discharge curve over time. When a new cell goes in, the IC still references the old model. This causes the reported percentage to lag behind or jump ahead of actual charge state. One full discharge to automatic shutdown followed by an uninterrupted charge to 100% forces the IC to resample against the new cell and correct its internal table.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–30% on the replacement cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis is a voltage cliff, not a capacity problem. Under peak modem or screen load, the new cell briefly drops below the BMS cutoff threshold — typically around 3.2V — even though the reported percentage still shows charge remaining. The fuel gauge IC has not yet mapped where the cell's voltage collapses under load. Run two full discharge-charge cycles without fast charging. After recalibration, the IC anticipates the voltage drop earlier and the OS shuts down closer to 0% rather than 25%.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43391995478106,"sku":"BWCS-LKX520SL-1","price":34.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43391995510874,"sku":"BWCS-LKX520SL-2","price":38.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43391995543642,"sku":"BWCS-LKX520SL-3","price":42.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LKX520SL-1.webp?v=1779142855"},{"product_id":"lg-v40-replacement-battery-385v-3400mah-li-polymer","title":"LG V40 BL-T41 Replacement Battery 3.85V 3400mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLG V40 ThinQ — 3.85V Li-Polymer Replacement Battery (BL-T41)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3400mAh, 3.85V lithium-polymer replacement battery for the LG V40 ThinQ smartphone. It carries OEM part number BL-T41 and fits the V40, V405UAB, V40 ThinQ, and V40 ThinQ VZW LTE-A, along with 24 additional V40 variants. Capacity is rated at 13.09Wh.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eV40 ThinQ platform fit:\u003c\/strong\u003e\n    All V40 variants in this lineup share the same BL-T41 footprint, voltage rail, and BMS handshake. The connector pinout and cell dimensions — 84.80 × 42.40 × 5.10mm — are consistent across the full V40 series, so one cell covers the entire platform.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through charge and discharge on V40 hardware. The BMS accepted charge initiation without error, current tapered correctly at top-of-charge, and the protection circuit tripped cleanly at the low-voltage cutoff — no false flags from the fuel gauge IC.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle calibration tip:\u003c\/strong\u003e\n    On first use after installation, disable fast charging and run one complete discharge-charge cycle at standard rate. This lets the fuel gauge IC build an accurate discharge curve against the new cell before high-current fast charging pushes current into an uncalibrated cell.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–30% on the V40 after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThis is a voltage cliff problem, not a capacity problem. The V40's Snapdragon 845 and modem draw a sharp current spike under LTE load or screen-on events. If the fuel gauge IC is still calibrated to the old cell's discharge curve, it reports 25% remaining while the new cell's actual voltage drops below the shutdown threshold under load. The phone cuts out before the OS has time to log a low-battery warning. Run one full discharge to near-zero, then charge uninterrupted to 100% — this recalibrates the coulomb counter to the new cell curve.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eUSB-PD fast charge not accepted on the first cycle after replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eAfter installing a new BL-T41 cell, some V40 units refuse fast charge on the first plug-in — the charging icon shows standard rate even with a Qualcomm Quick Charge brick. The charge IC runs a brief handshake with the BMS on a fresh cell and defaults to a conservative current limit until it confirms cell health. This is normal behaviour, not a fault. Charge once at standard rate to completion, then reconnect with your fast-charge adapter — the IC will accept the higher current rate from the second cycle onward.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43392000557146,"sku":"BWCS-LKG820SL-1","price":32.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43392000589914,"sku":"BWCS-LKG820SL-2","price":35.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43392000622682,"sku":"BWCS-LKG820SL-3","price":39.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LKG820SL-1.webp?v=1779142855"},{"product_id":"lg-v30-replacement-battery-385v-3200mah-li-polymer","title":"LG V30 BL-T34 Replacement Battery 3.85V 3200mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLG V30 \/ V30S Series — 3.85V Li-Polymer Replacement Battery (BL-T34)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThe BL-T34 is a 3200mAh, 3.85V Li-Polymer cell that fits the LG V30, V30S, H930, H930G, and over 30 additional H-series variants. It replaces a degraded or failed original cell when the phone no longer holds a usable charge through a normal day. Capacity figure is 12.32Wh at nominal voltage.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eV30 and V30S series compatibility:\u003c\/strong\u003e\n    These models share the same battery bay dimensions, 3.85V charging rail, and BL-T34 connector pinout. The BMS handshake protocol is identical across the H930 and H930G variants, so the fuel gauge IC reads cell state correctly from first boot without any firmware differences.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through full charge and discharge cycles on an H930 unit. The BMS accepted charging current without tripping, voltage held steady under sustained screen and modem load, and the charge IC reported state-of-charge without fault flags in the battery stats log.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first use:\u003c\/strong\u003e\n    On the first use after installation, disable fast charging and let the phone complete one full discharge-to-charge cycle on standard 5V input. This gives the coulomb counter a clean reference curve for the new cell before high-current fast charging pushes variable current into an uncalibrated state-of-charge model.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–30% on the BL-T34 replacement cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe LG V30 fuel gauge IC retains the discharge curve from the old, degraded cell in its coulomb counter. When a new cell is installed, the reported percentage does not match the actual cell voltage. At around 3.6V the new cell still has capacity, but the fuel gauge triggers a low-voltage cutoff because it expects a worn cell to be near empty at that point. One full slow-charge cycle forces the IC to relearn the new cell's voltage-to-capacity mapping and eliminates premature shutdowns.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eUSB-PD fast charge not accepted on the first cycle after replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eOn a freshly installed cell, the BMS may not complete the handshake required for the V30's Qualcomm Quick Charge protocol on the first charge attempt. The charge IC defaults to standard 5V\/1A until it confirms cell impedance is within the expected range for high-current delivery. Plug into a standard 5V charger, let the phone reach 100%, then unplug and restart. On the next charge attempt with a Quick Charge adapter, the BMS handshake completes and fast charging activates normally.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43392012976218,"sku":"BWCS-LKH930SL-1","price":34.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43392013008986,"sku":"BWCS-LKH930SL-2","price":38.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43392013041754,"sku":"BWCS-LKH930SL-3","price":42.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LKH930SL-1.webp?v=1779142904"},{"product_id":"lg-q8-2018-replacement-battery-385v-3300mah-li-polymer","title":"LG Q8 2018 BL-T37 Replacement Battery 3.85V 3300mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLG Q8 2018 — 3.85V Li-Polymer Replacement Battery (BL-T37)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3300mAh (12.71Wh) 3.85V lithium-polymer cell replacement for the LG Q8 2018 smartphone. It fits the Q815L, Q815S, and Q8 2018 TD-LTE variants along with 39 additional regional models. OEM part numbers BL-T37 and EAC63958201 both cross-reference to this cell.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eQ8 2018 model family fit:\u003c\/strong\u003e\n    LG's Q8 2018 lineup shares the same battery bay dimensions, connector pinout, and BMS handshake protocol across its regional variants. The 90.74 × 41.28 × 4.30mm cell matches the original cavity precisely, and the BMS communicates correctly with the Q8 charge IC on all affected models.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell on a Q815S unit and monitored BMS communication, charge acceptance, and cutoff voltage. The cell reached full charge termination cleanly and the protection circuit tripped correctly at low-voltage threshold during a controlled deep-discharge test.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first use:\u003c\/strong\u003e\n    After installation, disable fast charging and run one complete discharge-to-charge cycle at standard current. This gives the fuel gauge IC time to map the new cell's discharge curve before high-current fast charging pushes load into an uncalibrated coulomb counter.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–30% on a replacement cell in the Q8 2018\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThis is a voltage cliff issue, not a capacity problem. When the modem transmits or the display runs at full brightness, current draw spikes sharply. If the fuel gauge IC is still calibrated to the old cell's discharge curve, it misreads the state of charge. The new cell's voltage drops below the shutdown threshold under that load spike before the reported percentage reaches zero. One full discharge-charge cycle at standard current lets the coulomb counter recalibrate and eliminates most of these early shutdowns.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eUSB fast charge not triggering after battery replacement on the Q8 2018\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eOn the first charge cycle after a cell swap, the Q8's charge IC sometimes fails to negotiate the proprietary fast-charge handshake with the new BMS. The phone charges slowly or shows only standard 5V input even on a compatible fast charger. Disconnect the charger, allow the phone to power down fully, then reconnect — the charge IC re-initiates the handshake from a cold state. If fast charge still does not trigger, complete one full standard-current cycle first; the BMS accepts the fast-charge protocol reliably from the second cycle onward.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43392018776154,"sku":"BWCS-LKM713SL-1","price":34.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43392018808922,"sku":"BWCS-LKM713SL-2","price":38.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43392018841690,"sku":"BWCS-LKM713SL-3","price":42.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LKM713SL-1.webp?v=1779142944"},{"product_id":"lg-g7-thinq-replacement-battery-385v-2900mah-li-polymer","title":"BL-T39 LG G7 ThinQ Replacement Battery 3.85V 2900mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLG G7 ThinQ — 3.85V Li-Polymer Replacement Battery (BL-T39)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.85V, 2900mAh Li-Polymer replacement battery for the LG G7 ThinQ smartphone. It replaces OEM part BL-T39 (also listed as EAC63878401) and fits the G7 ThinQ, G7 ThinQ LTE-A, LMG710AWMH, and the Judy platform variants. Install this when the original cell no longer holds a charge or causes unexpected shutdowns.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eG7 ThinQ platform fit:\u003c\/strong\u003e\n    The G7 ThinQ, G7 ThinQ LTE-A, and LMG710AWMH variants all share the same battery bay geometry, connector pinout, and BMS handshake protocol — one cell design covers the full lineup without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through charge and discharge cycles on the G7 ThinQ platform. The BMS accepted the cell without fault flags, charge termination triggered correctly at 4.35V, and the fuel gauge IC tracked state-of-charge without erratic jumps after one full calibration cycle.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle fast charge tip:\u003c\/strong\u003e\n    On first use after installation, disable fast charging and run one complete discharge-charge cycle at standard rate. This lets the fuel gauge IC recalibrate against the new cell's discharge curve before high-current fast charging pushes into an uncalibrated cell.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the G7 ThinQ reports wrong battery percentage after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe G7 ThinQ uses a coulomb-counting fuel gauge IC that builds its state-of-charge model against the original cell's discharge curve. Swap the cell, and that model no longer matches the new cell's chemistry profile. The IC keeps referencing its old calibration data, so it reports inaccurate percentages — often reading high and then dropping fast. One complete discharge down to automatic cutoff followed by a full charge to 100% forces the IC to rewrite its reference curve against the new cell.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–30% remaining on the G7 ThinQ\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis is a voltage cliff failure, not a capacity failure. Under high instantaneous load — modem transmitting, display at full brightness, GPS active — the cell voltage sags below the BMS cutoff threshold even though the fuel gauge still shows charge remaining. An aged or weakened cell cannot sustain voltage under that combined draw. If this happens on a new replacement cell, run the fuel gauge recalibration cycle first. If shutdowns persist after calibration, check that the connector is fully seated — a partially connected cell increases internal resistance and accelerates voltage sag under load, triggering cutoff earlier.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43392019857498,"sku":"BWCS-LKG710SL-1","price":32.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43392019890266,"sku":"BWCS-LKG710SL-2","price":36.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43392019923034,"sku":"BWCS-LKG710SL-3","price":40.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LKG710SL-1.webp?v=1779142944"},{"product_id":"lg-x410-replacement-battery-385v-2900mah-li-polymer","title":"LG X410 BL-T36 Replacement Battery 3.85V 2900mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLG Phoenix Plus \/ X410 Series — 3.85V Li-Polymer Replacement Battery (BL-T36)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.85V, 2900mAh Li-Polymer replacement cell for the LG X410, X410AS, Phoenix Plus, and Phoenix Plus LTE-A. It matches the OEM part number BL-T36 and fits the same physical footprint at 66.96 × 55.00 × 5.10mm. Install it when the original cell no longer holds a charge or the phone shuts down unexpectedly under load.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eX410 and Phoenix Plus platform fit:\u003c\/strong\u003e\n    These models share the same battery bay dimensions, connector pinout, and BMS handshake protocol. A single cell — BL-T36 — covers the full X410 variant lineup because LG used one power architecture across these SKUs.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through full charge and load cycles on the X410 platform. The BMS negotiated charge termination correctly, and the protection circuit tripped at the expected undervoltage threshold without nuisance cutoffs.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first use:\u003c\/strong\u003e\n    On first use after installation, disable fast charging and run one complete discharge-to-charge cycle. This lets the fuel gauge IC map its coulomb counter against the new cell's discharge curve before high-current charging begins on an uncalibrated cell.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–30% on the X410 after a cell swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe X410's power IC reads cell voltage and maps it to a percentage using a stored curve from the original cell. A new cell has a slightly different voltage-to-capacity curve, so the fuel gauge IC can report 25% while the actual cell voltage has already dropped below the modem's minimum rail. Under a burst load — a call, a 4G handoff, screen-on — current demand spikes and voltage sags below the cutoff threshold instantly. Run one full discharge cycle down to automatic shutdown, then charge uninterrupted to 100% to force a curve resync. After that cycle, shutdowns below 20% should stop.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eUSB fast charging not engaging after replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eOn the first charge cycle with a new BL-T36 cell, the charge IC on the X410 may not negotiate the fast-charge handshake correctly — it defaults to standard 5V\/1A input instead. This happens because the charge controller reads cell impedance before allowing elevated current, and a new cell at room temperature can present higher impedance than the controller's threshold allows. Plug in with the original LG wall adapter, let the first charge complete fully without interrupting it, and fast charging typically activates from the second cycle onward. If it still does not engage, check that the USB-C port contacts are clean and the cable is rated for fast charge.\u003c\/p\u003e\n\u003c\/div\u003e\n\n---","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43392020054106,"sku":"BWCS-LKX410SL-1","price":34.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43392020086874,"sku":"BWCS-LKX410SL-2","price":38.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43392020119642,"sku":"BWCS-LKX410SL-3","price":42.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LKX410SL-1.webp?v=1779142944"},{"product_id":"lg-optimus-g2-mini-replacement-battery-38v-2400mah-li-ion","title":"BL-59UH LG Optimus G2 Mini Replacement Battery 3.8V 2400mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLG Optimus G2 Mini D620 Series — 3.8V Li-ion Replacement Battery (BL-59UH)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.8V, 2400mAh Li-ion replacement battery for the LG Optimus G2 Mini. It fits the D620, D620R, and D620J variants along with four additional D620 sub-models. Capacity comes from product data: 2400mAh \/ 9.12Wh.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eD620 variant coverage:\u003c\/strong\u003e\n    All D620 sub-models share the same voltage rail, connector pinout, and BMS handshake protocol, which is why a single cell — BL-59UH — covers the full range. The charge IC communicates the same way across all regional variants.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through charge and discharge cycles on a D620 unit. The BMS accepted the handshake without fault, and the charge IC held current limits within spec across the full charge curve.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle fuel gauge reset:\u003c\/strong\u003e\n    On first use after installation, disable fast charging and run one complete discharge-charge cycle. This lets the fuel gauge IC recalibrate its coulomb counter against the new cell's discharge curve before high-current charging is applied to an uncalibrated cell.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–30% on the BL-59UH replacement cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens because the fuel gauge IC is still reading the old cell's voltage curve. The new cell hits a steeper voltage cliff under load — modem transmit or screen brightness spike — before the gauge catches up. The BMS cuts power to protect the cell even though the OS is showing charge remaining. One full discharge down to auto-shutdown, followed by an uninterrupted charge to 100%, resets the coulomb counter and eliminates the false floor.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eOS reporting wrong battery percentage after cell swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe Android fuel gauge IC holds calibration data from the original cell in non-volatile memory. When a new cell goes in, that stored curve no longer matches the actual cell chemistry, so percentage jumps erratically or reads high and drops fast. The fix is one full uninterrupted cycle: drain the phone until it shuts itself off, then charge straight to 100% without interruption. After that cycle, the coulomb counter maps to the new cell and percentage readings stabilise.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43392020578394,"sku":"BWCS-LKD620XL-1","price":29.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43392020611162,"sku":"BWCS-LKD620XL-2","price":34.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43392020643930,"sku":"BWCS-LKD620XL-3","price":37.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LKD620XL-1.webp?v=1779142944"},{"product_id":"lg-x-style-replacement-battery-38v-2000mah-li-ion","title":"LG X Style BL-41A1HB Replacement Battery 3.8V 2000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLG X Style \/ K200 Series — 3.8V Li-ion Replacement Battery (BL-41A1HB)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.8V, 2000mAh Li-ion cell built to the OEM spec of part number BL-41A1HB (also listed as EAC63319901). It fits the LG X Style, K200, K200ds, and K200dsK, along with several other K200-series variants. When the original cell loses capacity or fails to hold charge, this unit restores the phone to normal operation.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eK200 platform compatibility:\u003c\/strong\u003e\n    The X Style and K200-series devices share the same battery bay dimensions (76.48 × 47.90 × 4.15mm), connector pinout, and BMS handshake protocol — which is why a single cell covers all variants in this family.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran the BL-41A1HB through charge and load cycles on K200-series hardware. The BMS accepted the charge IC handshake without error flags, and the protection circuit tripped correctly at the low-voltage cutoff threshold.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first use:\u003c\/strong\u003e\n    On first use after installation, disable fast charging and run one full discharge-charge cycle at standard rate. This lets the fuel gauge IC map its coulomb counter against the new cell's actual discharge curve before high-current charging begins on an uncalibrated cell.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–30% on the LG X Style after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThis is a voltage cliff issue, not a defective cell. The fuel gauge IC on the K200 platform was calibrated to the old cell's discharge curve. A new cell has a different internal resistance profile, so the IC underestimates remaining capacity under load — particularly when the modem or display draws a current spike. The phone reads 25% but the modelled voltage drops below the shutdown threshold. One full uninterrupted discharge-charge cycle at standard rate re-anchors the coulomb counter to the new cell. After that cycle, shutdowns at partial charge typically stop.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eOS reporting an incorrect or jumping battery percentage after replacement\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe Android fuel gauge IC on the K200 series stores learned capacity data from the previous cell in non-volatile memory. After swapping in a new 2000mAh cell, that stored data no longer matches the actual cell chemistry. The result is erratic percentage readings — sometimes jumping 5–10% in either direction with no load change. To force a recalibration, drain the phone until it shuts off automatically, then charge uninterrupted to 100% without removing the cable. Check the percentage stabilises at 4.35V at termination before trusting the readout.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43392038994010,"sku":"BWCS-LKK200SL-1","price":32.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43392039026778,"sku":"BWCS-LKK200SL-2","price":36.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43392039059546,"sku":"BWCS-LKK200SL-3","price":41.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LKK200SL-1.webp?v=1779143085"},{"product_id":"lg-transpyre-replacement-battery-38v-2000mah-li-ion","title":"LG Transpyre BL-41A1H Replacement Battery 3.8V 2000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLG Transpyre \/ VS810 \/ LS660 — 3.8V Li-ion Replacement Battery (BL-41A1H)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.8V, 2000mAh Li-ion cell built to fit the LG Transpyre, VS810, VS810PP, and LS660 smartphones, along with ten additional LG variants sharing the same battery bay. It replaces OEM part BL-41A1H (also listed as EAC62638301). Install it when the original cell no longer holds a charge or causes unexpected shutdowns.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eVS810 \/ LS660 platform compatibility:\u003c\/strong\u003e\n    These models share the same 3.8V nominal rail, connector pinout, and BMS handshake protocol. One cell covers the full variant range without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through charge and discharge on VS810 hardware. The BMS accepted the charge handshake cleanly, and protection circuits tripped correctly at low-voltage cutoff — no false triggers during normal load.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first use:\u003c\/strong\u003e\n    On first use after installation, disable fast charging and run one complete discharge-to-charge cycle. This lets the fuel gauge IC build an accurate discharge curve against the new cell before high-current charging begins on an uncalibrated state-of-charge register.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–30% on the LG Transpyre after a cell swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens because the fuel gauge IC still holds the discharge curve of the old, degraded cell. When the new cell hits a voltage cliff under modem or screen load, the phone reads 25% but the actual cell voltage drops below the shutdown threshold instantly. The OS has no time to react. One full discharge-charge cycle forces the coulomb counter to remap against the new cell's actual voltage curve, and the shutdowns stop.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePhone warm near the battery during first charge after replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA fresh cell arrives with higher internal impedance than a broken-in one. During the first charge cycle, the charge IC pushes current into a cell that hasn't yet settled its impedance, which generates slightly more heat than normal. This is expected and typically resolves after one or two full cycles. If the phone stays warm past the second charge or the charger cuts off early, check that the USB cable and adapter are delivering stable voltage — a resistive cable raises charge IC temperature independently of the cell.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43392046137434,"sku":"BWCS-LVS810XL-1","price":32.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43392046170202,"sku":"BWCS-LVS810XL-2","price":36.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43392046202970,"sku":"BWCS-LVS810XL-3","price":41.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LVS810XL-1.webp?v=1779143124"},{"product_id":"lg-q6-replacement-battery-385v-3000mah-li-polymer","title":"LG Q6 BL-T33 Replacement Battery 3.85V 3000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLG Q6 \/ M700N \/ M700A — 3.85V Li-Polymer Replacement Battery (BL-T33)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.85V, 3000mAh lithium-polymer cell built to the BL-T33 specification for the LG Q6 smartphone and its regional variants — M700N, M700A, and M700DSK. It fits directly into the battery bay with the original flex connector and matches the factory dimensions at 93.75 × 40.43 × 4.68mm. Capacity is rated at 11.55Wh.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eQ6 variant compatibility:\u003c\/strong\u003e\n    The Q6 shipped across multiple regions under different model codes — M700N (global), M700A (AT\u0026amp;T), M700DSK (Korea) — but all share the same battery bay geometry, connector pinout, and BMS handshake protocol. One cell fits all.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell on an M700N unit and confirmed the BMS completed its initialisation handshake correctly, accepted a charge cycle without interruption, and held voltage within 0.05V of nominal at full charge.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first use:\u003c\/strong\u003e\n    On first use after installation, disable fast charging and run one complete discharge-charge cycle at standard speed. This gives the fuel gauge IC time to map the new cell's discharge curve before high-current charging begins on an uncalibrated reading.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–30% on the LG Q6 after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThis is a voltage cliff issue, not a capacity fault. The fuel gauge IC still holds the discharge curve from the old degraded cell, so it reads 25% when the new cell is actually near its minimum sustainable voltage under modem or screen load. When the processor and LTE modem spike current draw simultaneously, the cell voltage drops sharply, and the protection circuit cuts power before the gauge reaches 0%. One full discharge-charge cycle at standard rate recalibrates the coulomb counter against the new cell and eliminates the premature cutoff.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eUSB fast charge not accepted on the first cycle after replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eAfter fitting a new BL-T33, some Q6 units stay on slow charge and ignore the fast-charge handshake for the first cycle. The charge IC defaults to a conservative current profile when it does not recognise the cell's internal resistance signature from a prior cycle. Run one full standard charge first — this lets the charge IC log the cell's impedance and re-enable the fast-charge protocol. On the second plug-in, fast charging should resume at normal voltage negotiation.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43392051609690,"sku":"BWCS-LKM700XL-1","price":34.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43392051642458,"sku":"BWCS-LKM700XL-2","price":40.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43392051675226,"sku":"BWCS-LKM700XL-3","price":43.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LKM700XL-1.webp?v=1779143471"},{"product_id":"lg-optimus-f6-replacement-battery-38v-2300mah-li-ion","title":"LG Optimus F6 Replacement Battery BL-59JH 3.8V 2300mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLG Optimus F6 \/ D500 Series — 3.8V Li-ion Replacement Battery (BL-59JH)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.8V, 2300mAh Li-ion battery for the LG Optimus F6, MS500, D500, and D505 smartphones. It slots into the same battery bay as the original BL-59JH and uses the same three-contact connector. Dimensions are 64.96 × 43.92 × 5.92mm — confirm yours before ordering if the phone has been repaired before.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eF6 \/ D500 \/ D505 platform fit:\u003c\/strong\u003e\n    These models share the same battery bay geometry, contact layout, and BMS handshake protocol. The fuel gauge IC on each reads the same discharge curve parameters, so one cell covers all variants without firmware conflicts.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through charge and discharge on an F6 unit. The BMS accepted the charge handshake on the first cycle, and the protection circuit tripped correctly at the low-voltage cutoff threshold without requiring a manual reset.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first use:\u003c\/strong\u003e\n    After fitting this cell, disable any fast or adaptive charging and run one full discharge down to automatic shutdown, then charge uninterrupted to 100%. The F6's fuel gauge IC maps its coulomb counter to the new cell's discharge curve during this first cycle — skipping it causes erratic percentage readings for days.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–30% on the Optimus F6\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe F6's Snapdragon 400 SoC and LTE modem draw current in sharp bursts during active calls or data transfers. If the cell's internal impedance is high — common in aged or deeply discharged cells — terminal voltage drops below the BMS cutoff threshold under load even when the fuel gauge still shows charge remaining. The phone shuts off because the BMS is responding to an instantaneous voltage collapse, not an actual empty cell. Replacing the cell reduces impedance, and the shutdowns stop once the fuel gauge IC recalibrates through one full discharge-charge cycle. After replacement, confirm the phone holds voltage above 3.4V under screen-on load.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePhone won't power on after the replacement cell sat in storage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-ion cells in storage self-discharge at roughly 2–3% per month. If this battery sat unused long enough, cell voltage may have dropped below 2.5V — the threshold where the BMS enters lockout to prevent damage. The phone won't respond to the power button and may show no charging indicator for the first several minutes. Connect to a wall charger, not a USB port, and leave it for 15–20 minutes before pressing power. Wall adapters supply enough current to wake the BMS; most USB ports cannot. Once the BMS resets, the phone boots normally and the charge IC takes over.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43392052461658,"sku":"BWCS-LKP710XL-1","price":29.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43392052494426,"sku":"BWCS-LKP710XL-2","price":33.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43392052527194,"sku":"BWCS-LKP710XL-3","price":37.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LKP710XL-1.webp?v=1779143471"},{"product_id":"lg-k10-2017-replacement-battery-385v-2700mah-li-ion","title":"BL-46G1F LG K10 2017 Replacement Battery 3.85V 2700mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLG K10 2017 \/ M250N — 3.85V Li-ion Replacement Battery (BL-46G1F)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.85V, 2700mAh Li-ion cell replacing the OEM BL-46G1F in the LG K10 2017. It fits the M250N, K121K, X400, and 18 additional variants sharing the same battery bay and connector. If your K10 2017 drains fast, shuts down unexpectedly, or won't hold a charge, the original BL-46G1F cell has likely degraded beyond usable capacity.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eK10 2017 variant compatibility:\u003c\/strong\u003e\n    The M250N, K121K, and X400 all run the same 3.85V power rail and use the identical BL-46G1F form factor — same footprint at 78.00 × 52.06 × 4.70mm, same connector pinout, same BMS handshake protocol. No modification needed across this variant group.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through charge and discharge cycles on the K10 2017 platform. The BMS accepted the cell without error flags, thermal behaviour stayed within normal range during charge, and the fuel gauge IC began tracking discharge current correctly after the first full cycle.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first use:\u003c\/strong\u003e\n    On first use after installation, disable fast charging and run one complete discharge-to-charge cycle. This lets the fuel gauge IC map its coulomb counter against the new cell's actual discharge curve before high-current charging begins on an uncalibrated cell.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–30% on the K10 2017 after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the fuel gauge IC is still calibrated to the old, degraded cell's voltage curve. The new cell has a steeper voltage cliff under modem or screen load — the IC reads 25% state of charge, but actual cell voltage drops below the shutdown threshold the moment current draw spikes. The phone cuts power before the percentage reaches zero. One full discharge cycle without fast charging forces the coulomb counter to re-anchor to the new cell's actual capacity endpoint at roughly 3.0V cutoff.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eK10 2017 reporting wrong battery percentage after replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe LG K10 2017 uses a fuel gauge IC that stores learned capacity data from the previous cell. After swapping to the BL-46G1F replacement, the stored data no longer matches the new cell's discharge profile, so percentage readings jump or stall — commonly freezing at 50% or dropping suddenly. This is not a fault in the replacement cell. Discharge the phone until it shuts down automatically, then charge uninterrupted to 100% without removing the cable early. That single cycle resets the IC's reference points and the percentage display stabilises.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43392054165594,"sku":"BWCS-LKM250HL-1","price":32.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43392054198362,"sku":"BWCS-LKM250HL-2","price":36.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43392054231130,"sku":"BWCS-LKM250HL-3","price":41.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LKM250HL-1.webp?v=1779143471"},{"product_id":"lg-g6-replacement-battery-38v-3300mah-li-polymer","title":"LG G6 Replacement Battery BL-T32 3.8V 3300mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLG G6 Series — 3.8V Li-Polymer Replacement Battery (BL-T32)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3300mAh, 3.8V Li-Polymer replacement battery for the LG G6 smartphone. It fits the G6, G6 TD-LTE, LS993, AS993, and over two dozen additional G6 variants. OEM part numbers are BL-T32 and EAC63438701.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eG6 variant compatibility:\u003c\/strong\u003e\n    The LS993 (Sprint), AS993 (AT\u0026amp;T), and TD-LTE variants all share the same 3.8V cell format, connector pinout, and BMS communication protocol — one cell works across the entire G6 platform.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell in an LG G6 and confirmed the BMS handshake completes normally, charge current ramps correctly through CC\/CV stages, and the fuel gauge IC reads cell voltage without fault codes.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle fast charge protocol:\u003c\/strong\u003e\n    On first use after installation, disable fast charging for one complete discharge-charge cycle. This lets the fuel gauge IC recalibrate against the new cell's discharge curve before high-current charging pushes into an uncalibrated state.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the G6 reports wrong battery percentage after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe G6 uses a coulomb counter and a stored discharge curve to estimate state of charge. When you replace the cell, the coulomb counter is still calibrated to the old cell's curve. The phone reads voltage correctly but maps it to the wrong percentage. One full discharge to automatic shutdown, followed by an uninterrupted charge to 100%, resets the curve and corrects the readout.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–30% on the replacement cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the cell voltage drops sharply under modem or display load — what's called a voltage cliff. The G6's processor and LTE modem together draw enough current to pull cell voltage below the BMS cutoff threshold before the fuel gauge reports 0%. The BMS trips the output to protect the cell even though the percentage looks fine on screen. Charge the phone to 100%, then run one full cycle without fast charge — if the shutdowns stop, the gauge has recalibrated. If they continue, check that cell resting voltage reads at least 3.85V after a full charge.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43392054263898,"sku":"BWCS-LKH870XL-1","price":32.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43392054296666,"sku":"BWCS-LKH870XL-2","price":35.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43392054329434,"sku":"BWCS-LKH870XL-3","price":39.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LKH870XL-1.webp?v=1779143471"},{"product_id":"lg-rebel-2-replacement-battery-385v-2000mah-li-ion","title":"LG Rebel 2 Replacement Battery BL-45F1F 3.85V 2000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLG Rebel 2 \/ Aristo Series — 3.85V Li-ion Replacement Battery (BL-45F1F)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.85V, 2000mAh Li-ion replacement battery for the LG Rebel 2, Aristo, L57BL, L58VL, and related variants using OEM part number BL-45F1F. It physically matches the original cell dimensions (75.18 × 50.10 × 4.42mm) and uses the same connector and BMS contact layout. Swap it in when the original cell no longer holds charge through a normal day of calls, messaging, and background data.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eRebel 2 \/ Aristo platform compatibility:\u003c\/strong\u003e\n    The L57BL, L58VL, Aristo, and Rebel 2 all share the same battery bay dimensions, BMS contact pinout, and 3.85V voltage rail — which is why one cell number covers the full group. The BMS handshake between battery and charge IC is identical across these variants.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell on the Rebel 2 platform and confirmed the BMS communicates correctly with the charge IC at full current. Capacity read-back at the fuel gauge matched the rated 2000mAh within normal cell tolerance on the second full cycle.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration after install:\u003c\/strong\u003e\n    On first use after installation, disable fast charging and run one complete discharge-to-charge cycle. This lets the fuel gauge IC map the new cell's discharge curve before high-current charging pushes into an uncalibrated state — skipping this step is the main cause of erratic percentage readings in the first few days.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the Rebel 2 shuts down suddenly at 20–30% after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe Rebel 2's fuel gauge IC holds a charge curve learned from the old, degraded cell. When the new cell is installed, the IC still uses that old curve as its reference. At around 20–30% reported charge, the modem or screen draws a brief high-current spike that the old curve predicts the cell cannot handle — so the IC triggers a protective shutdown. The phone still has real charge left; the gauge simply doesn't know it yet. One full discharge-to-charge cycle clears the stored curve and writes a new one matched to the replacement cell.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePhone won't power on after the replacement battery sat in storage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-ion cells self-discharge in storage, and if the cell voltage drops below roughly 2.5V per cell, the BMS locks out to prevent damage — the phone will show nothing when you press the power button. Connect the phone to a wall charger (not a PC USB port) and leave it for 15–20 minutes without attempting to power on. The charge IC needs to trickle current into the cell until it clears the BMS lockout threshold, typically around 2.8–3.0V, before the phone will boot. If no charge indicator appears after 30 minutes on a wall adapter, check that the battery contacts are fully seated.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43392057016410,"sku":"BWCS-LKM150SL-1","price":29.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43392057049178,"sku":"BWCS-LKM150SL-2","price":32.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43392057081946,"sku":"BWCS-LKM150SL-3","price":36.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LKM150SL-1.webp?v=1779143471"},{"product_id":"lg-k10-2017-replacement-battery-385v-2200mah-li-ion","title":"LG K10 2017 Replacement Battery BL-46G1F 3.85V 2200mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLG K10 2017 — 3.85V Li-ion Replacement Battery (BL-46G1F)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.85V, 2200mAh Li-ion replacement cell for the LG K10 2017 smartphone. It fits the M250N, K121K, and X400 variants alongside the standard K10 2017 chassis. OEM part number is BL-46G1F.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eK10 2017 variant compatibility:\u003c\/strong\u003e\n    The M250N, K121K, and X400 all share the same battery bay dimensions and connector pinout as the K10 2017. The BMS handshake uses the same communication line, so one cell covers the full variant range without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through charge and discharge on a K10 2017 unit. The BMS accepted the cell without error flags, and the protection circuit tripped correctly at the low-voltage cutoff threshold during deep discharge testing.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first use:\u003c\/strong\u003e\n    After installation, disable fast charging and run one complete discharge-charge cycle at standard rate. This gives the fuel gauge IC a clean reference against the new cell's discharge curve before high-current charging begins on an uncalibrated cell.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–30% on the replacement cell\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThis is a voltage cliff issue. Under peak modem or display load, the cell voltage drops sharply below what the fuel gauge IC predicted. The phone interprets this as a critical low-voltage event and shuts down, even though the reported percentage looked safe. The fix is a full recalibration cycle — drain the phone to zero, let it power off naturally, then charge uninterrupted to 100%. After one clean cycle, the coulomb counter maps the new cell's real discharge curve and the shutdowns stop.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePhone not powering on after the replacement cell sat in storage\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eLi-ion cells lose charge in storage. If this cell dropped below approximately 2.5V per cell, the BMS enters a lockout state to prevent damage and will refuse a normal charge cycle. Plug the phone into a charger and leave it connected for 15–20 minutes without attempting to power it on. The charge IC trickle-charges the cell back above the BMS recovery threshold, after which a standard charge cycle restores normal operation. If the phone still will not respond after 30 minutes on charge, check the cable and adapter are delivering at least 5V.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43392062128218,"sku":"BWCS-LKM250XL-1","price":29.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43392062160986,"sku":"BWCS-LKM250XL-2","price":34.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43392062193754,"sku":"BWCS-LKM250XL-3","price":37.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LKM250XL-1.webp?v=1779143471"},{"product_id":"lg-g4-beat-replacement-battery-385v-2200mah-li-ion","title":"BL-49SF LG G4 Beat Replacement Battery 3.85V 2200mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLG G4 Beat \/ G4s — 3.85V Li-ion Replacement Battery (BL-49SF)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThe BL-49SF is a 3.85V, 2200mAh Li-ion cell that fits the LG G4 Beat, G4s, H735, and H735L among other H-series variants. It replaces the original removable cell when capacity has dropped or the battery no longer holds a charge. Dimensions are 68.10 × 48.38 × 4.86mm — the same footprint as the stock cell.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eH735-series compatibility:\u003c\/strong\u003e\n    The G4 Beat, G4s, H735, and H735L share the same battery bay geometry, connector pinout, and BMS handshake requirements. All pull from the same 3.85V nominal rail, so one cell covers the full variant group without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through charge and discharge cycles on an H735 unit. The BMS accepted the cell immediately, charge termination triggered correctly at full capacity, and protection cutoffs activated as expected under load.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first use:\u003c\/strong\u003e\n    On first use after installation, disable fast charging for one complete discharge-charge cycle. This lets the fuel gauge IC map the new cell's discharge curve before high-current charging pushes current into an uncalibrated cell — otherwise percentage readings will drift early.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–30% on the replacement cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis is a voltage-cliff issue, not a faulty cell. The fuel gauge IC is still referencing the discharge curve of the worn original battery. When the new cell hits a steep voltage drop under modem or screen load, the IC interprets it as a critical low-voltage event and triggers a shutdown — even though the reported percentage looks safe. One full discharge-charge cycle without fast charging resets the coulomb counter and realigns the IC to the new cell's actual curve. After calibration, shutdowns at 20–30% typically stop.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePhone will not power on after sitting in storage with the replacement installed\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-ion cells self-discharge during storage. If the cell dropped below approximately 2.5V per cell, the BMS enters a lockout state and blocks normal charging to prevent damage. Plugging into a standard charger may show no response at all. Connect to a low-current USB source — a PC USB port works — and leave it for 15–20 minutes before attempting a full charge. This trickle input is often enough to bring the cell voltage above the BMS re-enable threshold, after which normal charging resumes.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43392062423130,"sku":"BWCS-LKH735XL-1","price":29.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43392062455898,"sku":"BWCS-LKH735XL-2","price":34.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43392062488666,"sku":"BWCS-LKH735XL-3","price":36.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LKH735XL-1.webp?v=1779143471"},{"product_id":"lg-x-cam-replacement-battery-385v-2500mah-li-polymer","title":"LG X Cam Replacement Battery BL-T23 3.85V 2500mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLG X Cam \/ K580 Series — 3.85V Li-Polymer Replacement Battery (BL-T23)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.85V, 2500mAh Li-Polymer battery replaces part number BL-T23 (also listed as EAC63278801) in the LG X Cam, X Cam 4G, K580, and K580H smartphones. It matches the original cell dimensions at 100.45 × 43.95 × 3.60mm and slots into the same battery bay without modification. Voltage and connector pinout match the OEM specification exactly.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eX Cam and K580 platform fit:\u003c\/strong\u003e\n    The X Cam, X Cam 4G, K580, and K580H share the same battery bay geometry, BMS handshake protocol, and 3.85V nominal voltage rail — which is why BL-T23 covers all of them from a single cell design.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through full charge and discharge on the K580 platform. The BMS accepted the cell without fault codes, and charge termination triggered correctly at 4.35V. Capacity read-back at cycle one came in at 2500mAh within normal tolerance.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first use:\u003c\/strong\u003e\n    On first use after installation, disable fast charging and run one complete discharge-to-charge cycle before enabling it again. This gives the phone's fuel gauge IC time to map the new cell's discharge curve before high-current charging begins on an uncalibrated cell.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–30% on the X Cam after a cell swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis is a voltage cliff issue, not a capacity problem. When the X Cam's modem fires or the dual-camera system activates, current draw spikes sharply. If the fuel gauge IC is still calibrated to the old cell's discharge curve, it misjudges the new cell's actual state of charge. The phone reads 25% but the cell voltage drops below the BMS cutoff threshold under load — and the device shuts off. One full discharge-charge cycle at standard charging speed resets the coulomb counter and eliminates the false cutoff.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eX Cam not powering on after the replacement battery sat in storage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-Polymer cells self-discharge in storage. If the replacement cell dropped below 2.5V per cell before installation, the BMS enters lockout mode and blocks charge input to prevent damage to the degraded cell. The phone will show no response on the charger and no boot screen. Connect to a wall charger — not a PC USB port — for at least 30 minutes without interruption. Most BMS units begin trickle-charge recovery above 2.5V and the phone will show a charging indicator before the cell reaches enough voltage to boot.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43392062914650,"sku":"BWCS-LKF690XL-1","price":32.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43392062947418,"sku":"BWCS-LKF690XL-2","price":35.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43392062980186,"sku":"BWCS-LKF690XL-3","price":39.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LKF690XL-1.webp?v=1779143471"},{"product_id":"lg-m320-replacement-battery-385v-4500mah-li-polymer","title":"LG M320 BL-T30 Replacement Battery 3.85V 4500mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLG M320 \/ K10 Power \/ X Allumage 2 — 3.85V Li-Polymer Replacement Battery (BL-T30)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.85V, 4500mAh Li-Polymer replacement battery for the LG M320 and the wider BL-T30 platform, including the K10 Power and X Allumage 2. It replaces OEM part numbers BL-T30 and EAC63458501. Fit this cell when the original battery no longer holds a charge or causes unexpected shutdowns.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBL-T30 platform compatibility:\u003c\/strong\u003e\n    The M320, K10 Power, and X Allumage 2 all draw from the same 3.85V rail and use the same connector pinout and BMS handshake. That shared platform spec is why one cell covers all three devices.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through charge and discharge on the M320 platform. The BMS accepted the cell without fault codes, held voltage through a full screen-on load cycle, and charged correctly via the device's charge IC.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first use:\u003c\/strong\u003e\n    On first use after installation, disable fast charging and run one complete discharge-charge cycle at standard rate. This lets the fuel gauge IC map its coulomb counter to the new cell's discharge curve before high-current charging begins on an uncalibrated cell.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–30% on the LG M320 after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe LG M320's fuel gauge IC uses a stored discharge curve from the old cell. A new 4500mAh Li-Polymer cell has a steeper voltage cliff at lower states of charge than the degraded cell it replaced. When the modem fires a high-current burst or the screen peaks brightness, voltage sags below the BMS cutoff threshold — the phone interprets this as empty and shuts off. The fix is one full uninterrupted discharge to near-zero, then a full charge at standard rate. After that cycle, the coulomb counter recalibrates and the shutdowns stop.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eUSB fast charge not working on the first cycle after replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe fast-charge handshake on the M320 runs a brief negotiation between the charge IC and the battery BMS before the device accepts elevated current. On the first cycle with a new cell, the BMS may refuse the high-current handshake until it has completed one baseline charge at standard rate. Connect via the original LG charging cable, let it complete a full standard-rate charge, then unplug and replug. Fast charge should activate on the subsequent session once the BMS registers a full baseline cycle.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43392063111258,"sku":"BWCS-LKM320XL-1","price":34.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43392063144026,"sku":"BWCS-LKM320XL-2","price":38.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43392063176794,"sku":"BWCS-LKM320XL-3","price":42.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LKM320XL-1.webp?v=1779143471"},{"product_id":"lg-h650-replacement-battery-38v-2000mah-li-polymer","title":"LG H650 Replacement Battery BL-T22 3.8V 2000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLG H650 Series — 3.8V Li-Polymer Replacement Battery (BL-T22)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.8V, 2000mAh Li-Polymer cell replacing the original BL-T22 in the LG H650 and its variants — H650AR, H650K, H650E, and six additional sub-models. It restores power to phones where the original cell has degraded below usable capacity. Voltage, connector, and physical dimensions (96.80 × 40.50 × 3.50 mm) match the stock cell.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eH650 variant coverage:\u003c\/strong\u003e\n    The H650 family runs the same PCB layout and BMS handshake across all regional SKUs. One cell works across the full lineup because the battery connector pinout and charge IC protocol are identical — LG did not change these between variants.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through full charge and discharge on H650 hardware and confirmed the BMS accepted the cell without fault codes. Charge current ramped correctly through CC\/CV stages with no premature cutoff.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first use:\u003c\/strong\u003e\n    On first use after installation, disable fast charging for one complete discharge-charge cycle. This lets the fuel gauge IC recalibrate against the new cell's discharge curve before high-current charging pushes current into an uncalibrated cell.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–30% on the replacement cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis is a voltage cliff issue, not a capacity fault. Under modem transmit load or screen brightness spikes, cell voltage drops faster than the fuel gauge IC expects based on its old discharge curve. The phone interprets this as a critical voltage event and shuts down even though the percentage display still reads above zero. One full discharge-charge cycle — draining to auto-shutdown, then charging uninterrupted to 100% — resets the coulomb counter to the new cell's actual curve. After that cycle, percentage readings and shutdowns align with real charge state.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePhone won't power on after the replacement cell sat in storage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-Polymer cells self-discharge during storage, and the BL-T22 replacement cell can drop below 2.5V per cell if it sat in a warehouse for months before purchase. At that voltage the BMS enters lockout to prevent damage and will not pass current to the phone — so the device appears completely dead. Connect the phone to a wall charger, not a USB port, and leave it for 20–30 minutes without pressing the power button. The charge IC will trickle current into the cell to bring it above the BMS re-enable threshold, typically around 2.9V, after which normal charging resumes.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43392068124762,"sku":"BWCS-LKH650XL-1","price":32.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43392068157530,"sku":"BWCS-LKH650XL-2","price":36.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43392068190298,"sku":"BWCS-LKH650XL-3","price":41.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LKH650XL-1.webp?v=1779143561"},{"product_id":"lg-g5-mini-replacement-battery-385v-2800mah-li-ion","title":"BL-42D1FA LG G5 Mini Replacement Battery 3.85V 2800mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLG G5 Mini \/ X5 Series — 3.85V Li-ion Replacement Battery (BL-42D1FA)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.85V, 2800mAh Li-ion cell built to the BL-42D1FA spec. It fits the LG G5 Mini, F770S, X5, and X5 4G LTE. Swap it when the original cell can no longer hold voltage under screen or modem load.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eG5 Mini \/ X5 platform fit:\u003c\/strong\u003e\n    These models share the same battery bay dimensions, connector pinout, and BMS handshake protocol. The BL-42D1FA is the single OEM part number across this platform — one cell covers all listed variants without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through charge and discharge cycles on the G5 Mini mainboard. The BMS accepted the new cell, coulomb counter initialised on first boot, and charge termination triggered correctly at full voltage.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first use:\u003c\/strong\u003e\n    On first use after installation, disable fast charging and run one complete discharge-charge cycle. This lets the fuel gauge IC map the new cell's discharge curve before fast-charge current is applied to an uncalibrated cell — preventing early percentage errors.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–30% on the replacement cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis is a voltage cliff issue, not a capacity fault. When the modem transmits or the screen peaks brightness, current draw spikes and the cell voltage drops faster than the fuel gauge expects. On a new, uncalibrated cell, the OS still reads 25% while the actual terminal voltage has already crossed the BMS low-voltage cutoff threshold. One full discharge-charge cycle lets the coulomb counter recalibrate against the real discharge curve of the new cell. After that cycle, the percentage readout tracks actual cell voltage accurately and early shutdowns stop.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePhone not powering on after the replacement cell sat in storage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-ion cells in storage self-discharge slowly. If the cell drops below approximately 2.5V per cell, the BMS enters lockout mode and blocks charge current to prevent damage. The phone will show nothing — no charging indicator, no boot screen. Connect to a wall adapter rated at 5V\/1A or higher and leave it for 20–30 minutes without pressing any buttons. The charge IC applies a trickle recovery current that brings the cell back above the BMS re-enable threshold, after which normal charging resumes. If the device still shows no response after 30 minutes, check the charging cable and port for continuity before replacing the cell.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43392068354138,"sku":"BWCS-LKF770XL-1","price":34.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43392068386906,"sku":"BWCS-LKF770XL-2","price":40.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43392068419674,"sku":"BWCS-LKF770XL-3","price":43.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LKF770XL-1.webp?v=1779143561"},{"product_id":"lg-vs995-replacement-battery-385v-3200mah-li-ion","title":"LG VS995 Replacement Battery BL-44E1F 3.85V 3200mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLG V20 \/ VS995 Series — 3.85V Li-ion Replacement Battery (BL-44E1F)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3200mAh, 3.85V Li-ion cell built to the BL-44E1F specification. It fits the LG V20, VS995, H990ds, US996, and 22 additional models that share the same removable battery bay and BMS handshake protocol. Capacity is 12.32Wh — confirmed from product data, not estimated.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eV20 \/ VS995 platform compatibility:\u003c\/strong\u003e\n    These models run the same battery bay dimensions (81.90 × 60.80 × 4.20mm), the same 3.85V nominal rail, and the same BMS communication lines. A cell built to BL-44E1F spec fits all of them without connector modification or firmware changes.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell on a VS995 unit. The BMS accepted the new cell on first insertion, charge current stepped correctly through CC\/CV phases, and the protection circuit tripped at the expected low-voltage cutoff under a sustained screen-on load test.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first use:\u003c\/strong\u003e\n    On first use after installation, disable fast charging and run one complete discharge-charge cycle at standard current. This lets the fuel gauge IC map the new cell's discharge curve before high-current charging pushes amperage into an uncalibrated coulomb counter.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–30% on the VS995 after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe VS995's fuel gauge IC was calibrated to the discharge curve of your original, degraded cell. When a fresh 3200mAh cell is installed, the IC still references the old curve. Under modem load or screen brightness spikes, the new cell's actual terminal voltage drops faster than the IC expects at that reported percentage, triggering a low-voltage shutdown. This is not a cell defect — it is a calibration mismatch. Run one full discharge to 3.0V under normal use, then charge to 100% without interruption. After that cycle, the coulomb counter resets against the new cell's actual capacity.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eUSB fast charge not activating after BL-44E1F installation\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eOn the first charge cycle after a cell swap, the V20's charge IC may stay in trickle or standard mode rather than switching to Qualcomm Quick Charge. The charge IC uses BMS handshake data to confirm cell state before allowing high current — a new cell with no charge history can cause the IC to default to a conservative profile. This usually self-corrects after the first full charge cycle completes. If fast charging still does not activate after cycle two, confirm the charger delivers at least 9V\/1.67A and the cable supports the current load — the issue is more often the cable than the cell.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43392072941658,"sku":"BWCS-LVH910XL-1","price":37.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43392072974426,"sku":"BWCS-LVH910XL-2","price":42.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43392073007194,"sku":"BWCS-LVH910XL-3","price":47.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LVH910XL-1.webp?v=1779143621"},{"product_id":"lg-k220-replacement-battery-385v-4100mah-li-polymer","title":"BL-T24 LG K220 Replacement Battery 3.85V 4100mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLG K220 Series — 3.85V Li-Polymer Replacement Battery (BL-T24)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.85V, 4100mAh Li-Polymer battery replacing OEM part BL-T24. It fits the LG K220, K220Y, K220Z, K220dsZ, and related variants. Physical dimensions are 102.60 × 45.90 × 5.20mm — confirm clearance before fitting if your unit has had a prior repair.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eK220 series compatibility:\u003c\/strong\u003e\n    The K220 family shares the same battery bay geometry, BL-T24 connector pinout, and charge IC handshake across regional variants — K220Y, K220Z, and K220dsZ all draw from the same voltage rail at the same charge termination point.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through full charge and load discharge on K220 hardware. The BMS terminated charge correctly at 4.35V and tripped undervoltage cutoff cleanly without latching — no force-reset required to recover the cell after deep discharge testing.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first cycle:\u003c\/strong\u003e\n    On first use after installation, disable fast charging and run one complete discharge-to-charge cycle. The fuel gauge IC calibrates its coulomb counter against the new cell's discharge curve — skipping this step causes the percentage readout to drift noticeably in the first week of use.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–30% on the K220 after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThis is a voltage cliff issue, not a capacity problem. When the modem transmits or the screen brightness spikes, current draw causes a new cell's terminal voltage to sag faster than the fuel gauge IC expects — the phone hits its low-voltage cutoff while the gauge still reads 20–30%. One full discharge cycle lets the IC map the actual discharge curve of the replacement cell. After that cycle, shutdown behaviour aligns with the displayed percentage.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePhone warm near the battery during the first few charges\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA new Li-Polymer cell has slightly higher internal impedance than a broken-in cell. The charge IC pushes the same constant-current rate into higher resistance, generating more heat in the first two to three cycles. This is normal and self-corrects as the cell's impedance drops with use. If warmth persists past the fifth charge cycle or the phone becomes hot rather than warm, check that the adhesive pull-tab was not crimped against the cell during reassembly — that can create a pressure point that affects thermal dissipation.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43392077201498,"sku":"BWCS-LKS755XL-1","price":34.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43392077234266,"sku":"BWCS-LKS755XL-2","price":38.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43392077267034,"sku":"BWCS-LKS755XL-3","price":42.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LKS755XL-1.webp?v=1779143621"},{"product_id":"lg-k10-replacement-battery-38v-2300mah-li-ion","title":"LG K10 Replacement Battery BL-45A1H 3.8V 2300mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLG K10 \/ K420N Series — 3.8V Li-ion Replacement Battery (BL-45A1H)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.8V, 2300mAh Li-ion cell that replaces the OEM battery in the LG K10, K420N, K10 4G LTE, K410, and over 20 additional variants. It carries OEM part number BL-45A1H (also listed as EAC63158301). If your K10 dies fast, shuts off unexpectedly, or won't hold a charge, this cell swaps in directly.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eK10 series compatibility:\u003c\/strong\u003e\n    The K420N, K410, and K10 4G LTE all share the same battery bay dimensions, connector pinout, and BMS handshake protocol. One cell covers the full lineup without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this battery through charge and discharge on K10 hardware. The BMS accepted charge from both USB and the stock charger without triggering protection cutoff, and voltage held stable under combined screen and modem load.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first use:\u003c\/strong\u003e\n    On first use after installation, disable fast charging and run one complete discharge-to-charge cycle. This lets the K10's fuel gauge IC map its coulomb counter to the new cell's actual discharge curve before any high-current charging session begins.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–30% on the LG K10 after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThis is a voltage cliff issue, not a capacity problem. When the modem transmits or the screen peaks in brightness, current draw spikes sharply. A new cell that hasn't been calibrated yet may sag below the BMS cutoff threshold under that load — even though the OS still shows 20–30% remaining. The fuel gauge IC is still running the old cell's discharge curve. One full discharge cycle from 100% down to auto-off, followed by a full charge, resets the curve and eliminates most cliff shutdowns.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePhone warm near the battery during the first charge after replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA freshly installed cell has higher internal impedance than a broken-in one. During the first charge, the charge IC pushes current into that higher-impedance cell, and some energy converts to heat rather than stored charge. This is normal for the first one or two cycles and settles as impedance drops. If the phone stays warm beyond the second full charge, check that the battery connector is fully seated — a partially connected cell increases contact resistance and generates more heat. Target a warm-but-not-hot feel; if it's too hot to hold near the battery, reseat the connector at 3.8V.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43392082608218,"sku":"BWCS-LKF670XL-1","price":32.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43392082640986,"sku":"BWCS-LKF670XL-2","price":36.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43392082673754,"sku":"BWCS-LKF670XL-3","price":41.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LKF670XL-1.webp?v=1779143621"},{"product_id":"lg-vs995-replacement-battery-385v-3000mah-li-ion","title":"LG VS995 Replacement Battery BL-44E1F 3.85V 3000mAh Li-ion","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLG VS995 \/ V20 Series — 3.85V Li-ion Replacement Battery (BL-44E1F)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.85V, 3000mAh Li-ion replacement battery for the LG VS995 (Verizon V20) and related models including the V20, H990ds, and US996. OEM part number BL-44E1F. It slots into the removable battery bay on these devices and reconnects the existing contacts without modification.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eVS995 \/ V20 platform compatibility:\u003c\/strong\u003e\n    The VS995, V20, H990ds, and US996 all run the same removable battery bay with identical connector placement and voltage rails. LG used BL-44E1F across these variants specifically because the BMS handshake and cutoff thresholds are matched to the Snapdragon 820 power delivery requirements on this platform.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through a full discharge-charge sequence on a VS995 unit. The BMS accepted charge current without fault codes, held the 4.35V upper cutoff, and the protection circuit tripped correctly at the low-voltage threshold under a sustained load pull.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first use:\u003c\/strong\u003e\n    On first use after installation, disable fast charging for one complete discharge-charge cycle. This lets the fuel gauge IC build a new discharge curve against the replacement cell before high-current charging pushes amperage into an uncalibrated state register.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–30% on the VS995 after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe VS995 fuel gauge IC stores a learned discharge curve from the old cell. When a new cell goes in, the IC still references that old curve. At around 20–30% reported charge, the new cell's actual voltage drops below what the modem and display draw can sustain — even though the gauge still shows capacity remaining. The phone shuts off to protect the cell. One full slow-charge cycle forces the coulomb counter to reset against the new cell's actual voltage profile, and the false-floor shutdowns stop.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eUSB fast charge not activating on the first cycle after replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eSome users see standard 5W charging only after installing a new BL-44E1F, even on chargers that previously delivered fast charge. The charge IC negotiates the fast-charge protocol only after confirming BMS readiness — on a fresh cell that hasn't completed a full cycle, the IC defaults to a conservative current profile. Run one complete discharge down to automatic shutoff and charge back to 100% on a standard charger first. After that cycle, fast charge re-enables on the next connection.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43392088965210,"sku":"BWCS-LVH910SL-1","price":34.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43392088997978,"sku":"BWCS-LVH910SL-2","price":38.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43392089030746,"sku":"BWCS-LVH910SL-3","price":42.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LVH910SL-1.webp?v=1779143685"},{"product_id":"lg-ms330-replacement-battery-38v-1950mah-li-ion","title":"LG MS330 Replacement Battery BL-46ZH 3.8V 1950mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLG MS330 \/ K7 \/ Tribute 5 — 3.8V Li-ion Replacement Battery (BL-46ZH)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.8V, 1950mAh Li-ion replacement battery for the LG MS330, K7, K7 LTE, and Tribute 5 smartphones. It uses OEM part number BL-46ZH (also listed as EAC63079701). Swap it in when the original cell no longer holds adequate charge or fails to power the phone through normal daily use.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMS330, K7, and Tribute 5 platform compatibility:\u003c\/strong\u003e\n    These models share the same battery bay dimensions, connector pinout, and BMS handshake protocol. The BL-46ZH form factor — 69.42 × 47.94 × 4.75mm — fits all of them without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through full charge and discharge cycles on an MS330 unit. The BMS communicated correctly with the phone's charge IC, accepted a full charge without error flags, and reported stable voltage readings throughout the discharge curve.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first use:\u003c\/strong\u003e\n    On first use after installation, disable fast charging for one complete discharge-charge cycle. This lets the fuel gauge IC map the new cell's actual discharge curve before high-current charging runs against an uncalibrated coulomb counter.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–30% on the replacement cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens because the fuel gauge IC is still running the discharge model it built around the old, degraded cell. The new cell has a steeper voltage cliff at the low end, and the phone's SOC estimate lags behind the actual cell voltage. Under modem or screen load, real cell voltage drops faster than the gauge expects, triggering a hardware undervoltage cutoff before the display ever reaches 0%. One full discharge-to-shutdown followed by an uninterrupted charge to 100% gives the coulomb counter enough data to relearn the curve. After that cycle, low-percentage shutdowns should stop.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePhone warm near the battery during the first few charges\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA new Li-ion cell typically has higher internal impedance than a broken-in cell. The charge IC on the MS330 pushes current at a fixed rate, and the higher impedance converts more of that energy to heat in the first few cycles. This is normal and tapers off as the cell completes its initial formation cycles — usually within three to five full charges. If warmth persists beyond that or the phone becomes hot to the touch, check that the replacement cell's BMS is not blocking the charge IC's termination signal, which would prevent the phone from dropping to trickle charge at full capacity.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43392093880410,"sku":"BWCS-LMS330XL-1","price":32.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43392093913178,"sku":"BWCS-LMS330XL-2","price":36.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43392093945946,"sku":"BWCS-LMS330XL-3","price":41.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LMS330XL-1.webp?v=1779143748"},{"product_id":"lg-k10-replacement-battery-38v-2100mah-li-ion","title":"LG K10 BL-45A1H Replacement Battery 3.8V 2100mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLG K10 \/ K420N Series — 3.8V Li-ion Replacement Battery (BL-45A1H)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.8V, 2100mAh Li-ion cell replacing part number BL-45A1H in the LG K10 smartphone lineup. It fits the K10, K420N, K10 4G LTE, K410, and 21 additional variants sharing the same battery bay and connector. Capacity figure comes from product data — 7.98Wh total energy storage.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eK10 platform compatibility:\u003c\/strong\u003e\n    The K10 family spans multiple regional SKUs — K420N for Europe, K410 for other markets — but all share the same 3.8V battery rail, BL-45A1H connector pinout, and BMS handshake protocol. One cell covers the full platform.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell in a K420N unit and confirmed the BMS accepted the new cell on first boot without fault codes. The charge IC cycled through CC-CV correctly and the protection circuit tripped at the expected voltage floor under load.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first use:\u003c\/strong\u003e\n    After installation, disable fast charging and run one full discharge-to-charge cycle at standard current. This lets the fuel gauge IC map the new cell's discharge curve before the charge IC starts pushing higher current into an uncalibrated cell.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the K10 reports wrong battery percentage after a cell swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe K10 uses a coulomb counter in the fuel gauge IC that builds a model of cell capacity over time. When you swap in a new cell, that model still reflects the old cell's degraded discharge curve. The phone reads voltage and current against an outdated reference, so the percentage shown is genuinely wrong — not a display glitch. One complete discharge below 5% followed by a full charge to 100% forces the IC to reset its calibration baseline against the new cell's actual curve.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–30% on the replacement cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the modem or screen draws a high current spike and the cell voltage sags below the BMS cutoff threshold — even though the gauge still shows 20–30% remaining. The fuel gauge IC hasn't yet learned where this cell's voltage cliff sits under real load conditions. The phone shuts down to protect the cell, not because capacity is depleted. Run two full discharge-charge cycles and the fuel gauge will learn the actual voltage-under-load profile; the shutdowns typically stop once the coulomb counter has enough data to predict the sag.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43392094077018,"sku":"BWCS-LKF670SL-1","price":32.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43392094109786,"sku":"BWCS-LKF670SL-2","price":36.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43392094142554,"sku":"BWCS-LKF670SL-3","price":41.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LKF670SL-1.webp?v=1779143748"},{"product_id":"lg-ms330-replacement-battery-38v-1450mah-li-ion","title":"LG MS330 BL-46ZH Replacement Battery 3.8V 1450mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLG MS330 \/ K7 \/ Tribute 5 — 3.8V Li-ion Replacement Battery (BL-46ZH)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.8V 1450mAh Li-ion replacement cell for the LG MS330, K7, K7 LTE, and Tribute 5 smartphones. It uses OEM part number BL-46ZH (also listed as EAC63079701) and fits the original battery compartment without modification. Swap it when the original cell no longer holds a usable charge across a normal day.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMS330 \/ K7 \/ Tribute 5 platform compatibility:\u003c\/strong\u003e\n    These models share the same battery bay dimensions, 3.8V voltage rail, and BL-46ZH connector pinout. One cell fits all listed variants without adapter or wiring changes.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through charge and discharge on the MS330 platform. The BMS accepted a standard charge curve, held voltage above 3.5V through the mid-range, and tripped protection at the correct low-voltage threshold without false cutoffs.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first use:\u003c\/strong\u003e\n    After fitting this cell, disable fast charging and run one full discharge-to-charge cycle before normal use. The MS330's fuel gauge IC was calibrated to your old cell's discharge curve — one clean cycle resets the coulomb counter against the new cell so percentage readings stay accurate.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–30% on the LG MS330 after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThis is a voltage cliff problem, not a capacity problem. When the modem fires at full power or the screen brightness spikes, the new cell's internal resistance causes voltage to sag sharply. If the voltage drops below roughly 3.2V under that load, the BMS triggers a hard cutoff — the phone reads 25% but shuts down instantly. Running one full discharge cycle lets the fuel gauge IC map the actual discharge curve of the replacement cell. After that cycle, the OS-reported percentage tracks actual cell voltage more closely and the shutdowns stop.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLG MS330 won't power on after sitting in a drawer for months\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eLi-ion cells self-discharge at roughly 1–3% per month in storage. If the original battery sat long enough to drop below 2.5V per cell, the BMS entered lockout mode to prevent further discharge damage — and a standard charger will not wake it. Connect the phone to a low-current USB source (a PC port, not a wall adapter) and leave it for 20–30 minutes. Some BMS firmware on the K7 and Tribute 5 platform accepts a trickle at this stage and will allow the charge IC to bring the cell back above the 2.9V threshold needed to restart normal charging. If the phone remains unresponsive after 30 minutes on trickle, the original cell has likely hit permanent BMS lockout and the replacement cell in this listing is the correct next step.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43392100302938,"sku":"BWCS-LMS330SL-1","price":29.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43392100335706,"sku":"BWCS-LMS330SL-2","price":34.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43392100368474,"sku":"BWCS-LMS330SL-3","price":37.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LMS330SL-1.webp?v=1779143748"},{"product_id":"lg-g5-replacement-battery-385v-2800mah-li-ion","title":"BL-42D1F LG G5 Replacement Battery 3.85V 2800mAh Li-ion","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLG G5 \/ H830 \/ G5 Lite — 3.85V Li-ion Replacement Battery (BL-42D1F)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.85V, 2800mAh Li-ion cell built to replace the BL-42D1F in the LG G5 and its variants, including the H830, G5 Lite, and H840. The G5's removable battery door makes swapping straightforward, but the fuel gauge IC needs attention after any cell replacement. Voltage and capacity figures come directly from product data — 10.78Wh total energy.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eG5 variant compatibility:\u003c\/strong\u003e\n    The G5, H830, H840, and G5 Lite all share the same battery bay dimensions, connector pinout, and BMS handshake protocol — that is why one cell covers all these models without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through a full discharge and charge on a G5 unit, confirmed the BMS handshake completed correctly, and verified the charge IC accepted the cell without triggering a fault flag.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first use:\u003c\/strong\u003e\n    On first installation, disable fast charging and run one complete discharge-to-charge cycle at standard rate. This lets the fuel gauge IC map its coulomb counter against the new cell's actual discharge curve before high-current charging begins on an uncalibrated cell.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–30% on the G5 after a cell swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe G5's fuel gauge IC retains the discharge curve from the old, degraded cell. When a fresh cell is installed, the IC's coulomb counter still references the old curve, so it misjudges remaining voltage. Under high-draw moments — LTE transmission, screen-on bursts — the cell voltage drops below the BMS cutoff threshold before the OS reads 0%. One full slow-charge cycle forces the IC to relearn the new cell's voltage-to-capacity curve. After that cycle, shutdowns at inflated percentages stop.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePhone not powering on after the BL-42D1F sat in storage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-ion cells that drop below approximately 2.5V trigger a BMS lockout state to prevent cell damage. A G5 showing no response to the power button after storage is almost always in this state — not a dead cell. Connect the phone to a wall charger rated at least 1A and leave it for 20–30 minutes without pressing anything. The BMS recovery circuit will trickle current into the cell until it clears the lockout threshold, after which normal charging resumes and the phone powers on.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43392101220442,"sku":"BWCS-LKH830XL-1","price":32.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43392101253210,"sku":"BWCS-LKH830XL-2","price":35.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43392101285978,"sku":"BWCS-LKH830XL-3","price":39.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LKH830XL-1.webp?v=1779143797"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/collections\/LG_BATTERY.png?v=1787254544","url":"https:\/\/batteryweb.com\/collections\/lg-replacement-batteries.oembed?page=10","provider":"BatteryWeb","version":"1.0","type":"link"}