{"title":"Projector","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eA portable projector is only as mobile as the battery powering it — and when that battery starts cutting presentations short or can't make it through a full movie, the whole point of going cordless starts to fall apart. Whether it's a mini projector you take to client meetings or a home theater unit that runs off battery backup, keeping the power source in good shape is what keeps the picture on the wall where it belongs.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eWe carry replacement batteries for a range of battery powered and portable projectors, as well as the remote control cells that operate them. Finding the right match for your specific projector model means you get the full runtime your device was built to deliver instead of watching the low battery warning cut your session short. Get the right battery, get the full show.\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":49.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43303978664026,"sku":"BWCS-LPH450SL-2","price":58.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43303978696794,"sku":"BWCS-LPH450SL-3","price":64.99,"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-ph550-replacement-battery-74v-3400mah-li-ion","title":"LG PH550 Portable Projector Replacement Battery 7.4V 3400mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLG PH550 — 7.4V Li-ion Replacement Battery (EAC63238201)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 7.4V, 3400mAh lithium-ion battery replaces the original EAC63238201 cell in the LG PH550 portable projector. It restores cordless operation so the projector runs away from a wall outlet — for presentations, travel, or outdoor use. Voltage and capacity match the original specification exactly.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePH550 platform fit:\u003c\/strong\u003e\n    The PH550 uses a single-cell lithium-ion pack at 7.4V nominal. The BMS in this unit communicates directly with the projector's power management board, so voltage tolerance and cell chemistry both need to match — this pack meets both requirements.\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 PH550 platform. The projector's BMS accepted the pack, cycled through charge states without fault codes, and lamp ignition held stable from full charge down through the low-battery warning threshold.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eLamp draw management:\u003c\/strong\u003e\n    Set the PH550 to eco brightness mode when running on battery. Full brightness pulls 30–40% more current from the pack than eco mode does. The difference in image quality is minimal in most indoor environments, but the current draw difference is significant.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the PH550 shuts off before the battery indicator reaches empty\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe PH550's lamp requires a higher minimum supply voltage than the projector's low-battery cutoff threshold is calibrated for. As the cell discharges and internal resistance rises, voltage sags under lamp load — even when the gauge still shows charge remaining. The projector's power board detects the voltage drop and shuts the lamp down to protect the circuit. This is a design characteristic of the platform, not a fault with the battery.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePH550 shows \"charging\" but battery percentage never increases\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis usually means the internal charger has lost communication with the pack's BMS, often because the cell voltage dropped below the charger's recovery threshold — typically around 2.5V per cell. The charger enters a trickle state, reports \"charging,\" but never transitions to bulk charge. Remove the battery, leave it disconnected for 60 seconds, then reseat it firmly and reconnect the power adapter. If the percentage still does not move after 20 minutes, check that the adapter output is at the rated voltage before assuming the battery is at fault.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416087363674,"sku":"BWCS-LPH550XL-1","price":49.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416087396442,"sku":"BWCS-LPH550XL-2","price":58.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416087429210,"sku":"BWCS-LPH550XL-3","price":64.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LPH550XL-1.webp?v=1779760241"},{"product_id":"lg-ph550-replacement-battery-74v-2600mah-li-ion","title":"LG PH550 Projector Replacement Battery 7.4V 2600mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLG PH550 — 7.4V Li-ion Replacement Battery (EAC63238201)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 7.4V, 2600mAh Li-ion replacement battery for the LG PH550 portable projector. It slots into the PH550's battery compartment and restores cordless operation when the original cell no longer holds charge. Voltage and capacity match the OEM specification exactly.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePH550 platform fit:\u003c\/strong\u003e\n    The PH550 uses a dedicated battery bay with a proprietary connector and a BMS that handshakes with the projector's charge controller. This cell matches that connector pinout and communicates correctly with the onboard management circuit — the projector reads state-of-charge accurately and does not trigger false-empty shutdowns at the hardware level.\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 PH550. The BMS held the cutoff voltage at the expected floor, charge termination triggered cleanly at full capacity, and the projector's battery indicator tracked correctly through the full discharge curve.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eLamp draw management in use:\u003c\/strong\u003e\n    Set the PH550 to eco or low-brightness mode during battery operation. Full lamp brightness pulls 30–40% more current from the cell than eco mode does — this is the single biggest variable affecting how long the projector runs on one charge.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the PH550 shuts off before the battery indicator reaches empty\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe PH550's lamp requires a minimum supply voltage to sustain ignition — typically around 6.8–7.0V under load. As the Li-ion cell depletes, internal resistance rises and voltage sags under the lamp's current draw. The projector cuts the lamp before the battery indicator formally reads empty because the voltage under load has already dropped below the lamp's operating floor. Switching to eco mode reduces current draw and lowers the voltage sag, keeping the lamp alive longer into the discharge curve.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePH550 not charging — projector plugged in but battery percentage stays flat\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe PH550's internal charger uses a CC-CV profile matched to a 7.4V Li-ion pack — if the replacement cell's protection circuit has tripped due to over-discharge, the charger may not deliver enough initial current to wake it. Remove the battery, leave it out for 60 seconds, reinsert it, then connect mains power with the projector switched off. If the charge indicator still does not activate after five minutes, check that the cell resting voltage is above 5.5V with a multimeter — below that threshold, the BMS may require a pre-charge pulse the internal charger cannot supply.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416087461978,"sku":"BWCS-LPH550SL-1","price":43.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416087494746,"sku":"BWCS-LPH550SL-2","price":51.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416087527514,"sku":"BWCS-LPH550SL-3","price":56.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LPH550SL-1.webp?v=1779760241"},{"product_id":"lg-pf50ka-replacement-battery-74v-5200mah-li-ion","title":"LG PF50KA Portable Projector Compatible Battery 7.4V 5200mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLG PF50KA — 7.4V Li-ion Replacement Battery (EAC64198204)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 7.4V, 5200mAh Li-ion replacement battery for the LG PF50KA portable projector. It powers the LED light source, image processing board, and onboard cooling during cordless use. Part number EAC64198204 matches the original cell specification and connector configuration for this model.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePF50KA platform fit:\u003c\/strong\u003e\n    The PF50KA uses a 7.4V two-cell Li-ion pack with a proprietary connector and BMS handshake. This replacement matches that exact cell count, voltage rail, and communication protocol — the projector's power management unit reads state-of-charge correctly from first boot.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this pack through full charge and discharge cycles on the PF50KA. The BMS reported accurate charge percentage throughout, and the projector's low-battery warning triggered at the correct voltage threshold without premature shutdown.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBrightness mode and current draw:\u003c\/strong\u003e\n    Switch the PF50KA to eco or low-brightness mode when running on battery. Full lamp brightness pulls 30–40% more current than eco mode — the difference in image quality is negligible in most indoor environments, but the impact on available runtime is significant.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the PF50KA shuts off before the battery indicator reaches empty\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe LED light source in the PF50KA requires a minimum sustained voltage to maintain a stable arc. That cutoff sits higher than the battery's fully depleted voltage. So the projector powers down to protect the lamp while the battery gauge may still show one or two bars remaining. This is normal behaviour and not a fault with the battery or the projector. A degraded original battery accelerates this — cell voltage sags under lamp load even when resting voltage appears acceptable.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePF50KA showing \"charging\" but battery percentage not increasing\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe PF50KA's internal charger expects a Li-ion cell chemistry with a specific charge termination voltage of 8.4V at full capacity. If the replacement pack's BMS trips during the initial charge cycle — typically because cells arrived below 6.0V from storage — the charger can stall in a trickle-charge state that looks like normal charging on screen. Remove the battery, leave it disconnected for two minutes, then reinsert it and begin charging from a cold projector with the unit fully powered off. That resets the BMS handshake and allows the charger to restart the CC\/CV sequence from the correct starting point.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416087560282,"sku":"BWCS-LPF150PT-1","price":43.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416087593050,"sku":"BWCS-LPF150PT-2","price":51.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416087625818,"sku":"BWCS-LPF150PT-3","price":56.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LPF150PT-1.webp?v=1779760241"},{"product_id":"lg-ph150-replacement-battery-74v-2600mah-li-ion","title":"EAC64198201 LG PH150 Replacement Battery 7.4V 2600mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLG PH150 \/ PH150G Portable Projector — 7.4V Li-ion Replacement Battery (EAC64198201)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 7.4V, 2600mAh Li-ion battery replaces OEM part EAC64198201 in the LG PH150 and PH150G portable LED projectors. It slots into the same battery bay as the original and connects to the projector's onboard BMS through the same multi-pin interface. Voltage and capacity match the original cell specification exactly.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePH150 and PH150G compatibility:\u003c\/strong\u003e\n    Both models share the same battery bay dimensions, connector pinout, and BMS communication protocol — one cell fits either unit without modification or adapters.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran the battery through charge and discharge cycles on the PH150 platform. The BMS handshake completed correctly, charge termination triggered at the right voltage, and the projector reported battery status accurately through all states.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eLamp brightness and draw management:\u003c\/strong\u003e\n    Set the PH150 to eco brightness mode when running on battery. Full brightness draws 30–40% more current from the cell than eco mode — the projector's LED driver pulls harder, which stresses the cell and reduces available runtime without a visible quality difference in most presentation environments.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the PH150 shuts off before the battery indicator reaches empty\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe PH150's LED lamp assembly requires a minimum supply voltage to sustain stable light output — typically above the battery's official low-voltage cutoff. When the cell voltage drops under load to that lamp threshold, the projector kills power to the lamp even though the battery gauge still shows remaining charge. This is a firmware-level protection to prevent an unstable lamp arc, not a fault in the battery. It becomes more noticeable in cold environments or with an aged cell that sags harder under the lamp's current draw.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBattery shows full charge but projector won't start\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis usually means the BMS has entered a protection state — often triggered by a deep discharge that dropped cell voltage below the recovery threshold. The projector's charge circuit may not supply enough current to wake a deeply discharged cell on its own. Connect the projector to mains power and leave it for 20–30 minutes before attempting to power on; the charger needs time to trickle-charge the cell back above approximately 3.0V per cell (6.0V pack) before the BMS unlocks normal operation. If the battery still shows no response after that, check the connector pins for oxidation and reseat the pack firmly.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416087658586,"sku":"BWCS-LPH150PT-1","price":30.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416087691354,"sku":"BWCS-LPH150PT-2","price":35.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416087724122,"sku":"BWCS-LPH150PT-3","price":38.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LPH150PT-1.webp?v=1779760241"},{"product_id":"philips-ppx4350-replacement-battery-37v-1500mah-li-polymer","title":"Philips PPX4350 Replacement Battery 3.7V 1500mAh Li-Polymer","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003ePhilips PPX4350 — 3.7V Li-Polymer Replacement Battery (AEC974241)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 1500mAh Li-Polymer battery for the Philips PPX4350 portable projector. It replaces OEM part AEC974241 and restores battery-powered projection for presentations and video playback. The cell measures 43.00 × 40.00 × 8.20mm and fits the PPX4350's internal battery compartment.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePPX4350 platform fit:\u003c\/strong\u003e\n    The PPX4350 uses a slim Li-Polymer cell at 3.7V nominal to keep the chassis thin. The battery's BMS communicates with the projector's charge controller — voltage, cell format, and connector pinout all need to match exactly, which is why this cell is listed for the PPX4350 only.\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 PPX4350 units. The BMS held cutoff at low-end voltage correctly, the projector recognised the battery without fault codes, and the charge LED cycled through to full as expected.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eLamp brightness setting on battery:\u003c\/strong\u003e\n    Set the PPX4350 to eco or low-brightness mode when running on battery. Full lamp output draws 30–40% more current than eco mode. The projector's minimum operating voltage is higher than the battery's empty threshold — high lamp draw accelerates voltage sag and triggers shutdown before the battery 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\"\u003ePPX4350 shutting off before the battery indicator reaches empty\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe PPX4350's lamp requires a higher minimum supply voltage than the point at which the battery indicator shows empty. When current draw is high — full brightness, maximum volume — the battery's internal voltage sags under load faster than the indicator tracks. The projector's power circuit hits its cutoff threshold and shuts down even though the indicator shows charge remaining. Switching to eco mode reduces current draw and keeps cell voltage above the projector's cutoff threshold longer.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePPX4350 not charging when connected to mains\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe PPX4350's internal charger is calibrated for a Li-Polymer cell at 3.7V nominal — it expects a specific charge profile to initiate current flow. If the replacement cell's voltage has dropped below approximately 2.5V from deep discharge, the charger may not detect a valid cell and will not start charging. Connect the projector to mains and leave it for 15–20 minutes without powering on; some charge controllers send a trickle current first to recover a deeply discharged cell before switching to full charge current. If the charge LED does not respond, the cell voltage has likely dropped below recovery threshold.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416087756890,"sku":"BWCS-PHX435SL-1","price":24.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416087789658,"sku":"BWCS-PHX435SL-2","price":27.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416087822426,"sku":"BWCS-PHX435SL-3","price":30.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-PHX435SL-1.webp?v=1779760241"},{"product_id":"acer-projector-c205-replacement-battery-74v-1850mah-li-ion","title":"Acer Projector C205 Replacement Battery 7.4V 1850mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eAcer Projector C205 — 7.4V Li-ion Replacement Battery (MC.JH911.002)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 7.4V, 1850mAh Li-ion battery replaces the OEM pack in the Acer Projector C205 portable projector. It matches the original cell chemistry and BMS handshake the C205 expects. Voltage and capacity are sourced from the OEM specification: 7.4V, 1850mAh (13.69Wh).\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eC205 compatibility:\u003c\/strong\u003e\n    The C205 uses a 7.4V two-cell Li-ion pack with a BMS that monitors cell voltage individually. A replacement must match both the nominal voltage and the BMS communication protocol — a mismatched pack will trip the projector's protection circuit before the battery reaches empty.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this battery through the C205's charge and discharge sequence. The BMS accepted the pack without fault codes, and the projector's battery indicator tracked correctly from full charge through to low-battery cutoff.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eLamp brightness setting on battery:\u003c\/strong\u003e\n    Set the C205 to eco or low-brightness mode when running on battery. Full lamp output draws 30–40% more current than eco mode. In most presentation environments, the difference in image brightness is not noticeable, but the difference in draw from the battery is significant.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the C205 shuts off before the battery indicator reaches empty\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe C205 lamp requires a higher minimum supply voltage than the projector's general electronics. When the battery sags under load, the lamp's driver circuit hits its cutoff threshold before the battery gauge reads zero. This is not a battery fault — it is a voltage sag issue caused by the lamp being the largest single current draw in the system. Running eco mode reduces lamp draw and keeps the pack voltage above the lamp's cutoff threshold for longer.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBattery not recognised after sitting unused for several months\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-ion cells that drop below approximately 2.5V per cell will cause the BMS to enter deep-discharge lockout — the projector will not power on and may not attempt to charge the pack. To recover, connect the projector to mains and leave it for 15–30 minutes without pressing the power button. Most BMS circuits will allow a trickle pre-charge recovery if the cells have not gone below the hard cutoff of around 2.0V per cell. If the projector still does not recognise the battery after this, check that the supply voltage at the charging port is stable at 12V or the rated input shown on the power adapter label.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416087855194,"sku":"BWCS-APC205PT-1","price":24.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416087887962,"sku":"BWCS-APC205PT-2","price":27.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416087920730,"sku":"BWCS-APC205PT-3","price":30.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-APC205PT-1.webp?v=1779760223"},{"product_id":"sony-xperia-touch-g1109-replacement-battery-111v-1100mah-li-ion","title":"Sony Xperia Touch G1109 Replacement Battery LIP3116ERPC 11.1V","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSony Xperia Touch G1109 — 11.1V Li-ion Replacement Battery (LIP3116ERPC)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 11.1V, 1100mAh Li-ion battery replaces the OEM LIP3116ERPC in the Sony Xperia Touch G1109 portable interactive projector. It restores the unit's ability to project and accept touch input away from a wall outlet. Capacity is 12.21Wh, matching the original cell specification.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eG1109 platform fit:\u003c\/strong\u003e\n    The Xperia Touch G1109 uses an 11.1V three-cell Li-ion pack with a BMS that handshakes over the data line. A mismatched cell count or voltage rail causes the projector to refuse boot — this pack uses the correct cell configuration and connector pinout for that handshake to complete.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack on a G1109 unit at standard and eco lamp settings. The BMS balanced correctly across all three cells and the projector exited standby without triggering a protection cutoff at either brightness level.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eLamp brightness setting on battery:\u003c\/strong\u003e\n    Set the G1109 to eco mode when running on battery. Full lamp brightness pulls 30–40% more current than eco mode, which causes the battery voltage to sag faster and trips the BMS cutoff earlier — eco mode delivers the same projectable image in most indoor environments.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the Xperia Touch G1109 shuts off before the battery indicator reaches empty\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe G1109's lamp module requires a minimum supply voltage to sustain its output. That threshold sits higher than the BMS low-cell cutoff voltage. When the pack voltage drops to the lamp's minimum floor under load — typically around 9.0V on a degraded or heavily drawn cell — the projector cuts power to protect the lamp, even if the on-screen battery indicator still shows charge remaining. This is a load-dependent shutdown, not a faulty battery. Switching to eco lamp mode lowers current draw and keeps cell voltage above that floor for longer.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eG1109 showing \"charging\" but battery percentage not increasing\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe internal charger in the G1109 checks cell voltage before it begins a charge cycle. If the pack has dropped below approximately 2.5V per cell — common in batteries that have sat unused for months — the charger enters a trickle pre-charge phase that can last 30–60 minutes before normal charge current resumes. During this phase the charging indicator is active but the percentage display stays flat. Leave the unit plugged in and do not interrupt the session. If percentage remains static beyond 90 minutes, check that the USB-C input is delivering full rated voltage — a weak charger or damaged cable limits the input and stalls the cycle.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416087953498,"sku":"BWCS-SXT110PT-1","price":54.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416087986266,"sku":"BWCS-SXT110PT-2","price":64.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416088019034,"sku":"BWCS-SXT110PT-3","price":71.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-SXT110PT-1.webp?v=1779760242"},{"product_id":"aaxa-p300-pico-projector-replacement-battery-74v-1300mah-li-polymer","title":"AAXA P300 Pico Projector Compatible Battery 7.4V 1300mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eAAXA P300 Pico Projector — 7.4V Li-Polymer Replacement Battery (CRTAAXAP300RB)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 7.4V, 1300mAh lithium-polymer battery is a direct replacement for the AAXA P300 Pico Projector. It fits the compact pocket projector used for portable business presentations and personal media display. Capacity figures are taken from the product data: 1300mAh \/ 9.62Wh.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eP300 Pico Projector fit:\u003c\/strong\u003e\n    The P300 uses a 7.4V Li-Polymer cell with a proprietary connector and BMS handshake tied to the projector's charging and lamp-power circuitry. This replacement matches that voltage rail and connector geometry so the internal charger and lamp driver communicate correctly.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this battery through the P300's charge and discharge sequence. The BMS held the cutoff voltage correctly, and the lamp driver received stable current without triggering low-voltage shutdown ahead of the battery indicator reaching empty.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eLamp brightness setting on battery power:\u003c\/strong\u003e\n    Set the P300 to eco or low-brightness mode when running on battery. Full brightness draws 30–40% more current than eco mode — the lamp's minimum voltage threshold is reached sooner, and the projector will shut off before the battery indicator shows empty.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the P300 cuts out before the battery indicator reaches empty\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe P300's lamp driver requires a higher minimum supply voltage than the battery's low-voltage cutoff threshold. As cell voltage sags under lamp load, the projector shuts off to protect the lamp circuit — even though the BMS has not yet triggered and the battery indicator still shows charge remaining. This gap widens as the cell ages and internal resistance rises, because voltage sag under load becomes more severe. Running eco brightness mode reduces lamp current draw and narrows that gap significantly.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eP300 internal charger showing no charge activity after battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eIf the P300's charge indicator does not activate after fitting a new battery, the cell voltage has likely dropped below the projector's charger pre-charge threshold — typically seen when a replacement cell has sat in storage. Connect the projector to power and leave it for 10–15 minutes; the charger should detect the cell once voltage recovers slightly above the threshold. If the indicator still does not activate, verify the battery connector is fully seated — the P300's connector requires firm pressure to make contact across all pins. A correctly seated, healthy cell should show a charging state at or above 6.0V.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416088051802,"sku":"BWCS-AXP3PT-1","price":35.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416088084570,"sku":"BWCS-AXP3PT-2","price":41.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416088117338,"sku":"BWCS-AXP3PT-3","price":45.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-AXP3PT-1.webp?v=1779760222"},{"product_id":"verizon-spro2-replacement-battery-38v-6200mah-li-polymer","title":"Verizon SPro2 Replacement Battery 3.8V 6200mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eVerizon SPro2 — 3.8V Li-Polymer Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.8V, 6200mAh Li-Polymer replacement battery for the Verizon SPro2 portable projector. It fits both \"SPro2\" and \"S Pro 2\" labelled units — same hardware, different packaging runs. Swap it in when the original cell no longer holds a charge through a full presentation.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSPro2 platform fit:\u003c\/strong\u003e\n    Both SPro2 variants use the same 3.8V single-cell Li-Polymer pack with an identical connector and BMS handshake. Voltage rail and cell format match — the projector's charge management circuit recognises this cell without a firmware flag.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through the SPro2's internal charger and confirmed the BMS accepted charge without triggering a fault state. Discharge monitoring showed the cell holds its voltage curve through the lamp's operating range.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eLamp brightness setting on battery power:\u003c\/strong\u003e\n    Set the SPro2 to eco or low-brightness mode when running on battery. Full brightness draws 30–40% more current from the cell than eco mode. In most indoor presentation environments, the difference in image quality is not visible, but the draw on the cell is significant.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the SPro2 lamp cuts out before the battery indicator reaches empty\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe SPro2's lamp requires a higher minimum voltage than the battery cutoff threshold the indicator is calibrated against. As the cell discharges and voltage sags, the lamp circuit hits its floor first — the projector shuts down even though the gauge still shows charge remaining. This is not a fault with the battery or the projector. It is a consequence of the lamp's voltage floor sitting above the cell's nominal empty point. A fresh, full-capacity cell has a flatter discharge curve and holds voltage above that lamp floor for longer before the sag occurs.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSPro2 not charging — internal charger accepting no current\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eIf the SPro2 shows no charging activity after a battery swap, the most common cause is a deeply discharged cell that has dropped below the BMS's recovery threshold. The internal charger expects the cell to present above roughly 3.0V before it begins a charge cycle. Connect the projector to mains and leave it for 15–20 minutes without powering it on — the BMS on some units will attempt a trickle pre-charge to recover the cell voltage above the threshold. If the charge indicator still does not activate after that window, verify the USB-C power source is delivering at least 9V DC to the projector's input port.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416088150106,"sku":"BWCS-ZMF970PT-1","price":35.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416088182874,"sku":"BWCS-ZMF970PT-2","price":41.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416088215642,"sku":"BWCS-ZMF970PT-3","price":45.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-ZMF970PT-1.webp?v=1779760241"},{"product_id":"att-spro2-replacement-battery-38v-6200mah-li-polymer","title":"AT\u0026T SPro2 Replacement Battery 3.8V 6200mAh Li-Polymer","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eAT\u0026amp;T SPro2 — 3.8V Li-Polymer Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.8V, 6200mAh Li-Polymer battery for the AT\u0026amp;T SPro2 mobile projector. It fits both the SPro2 and S Pro 2 variants. Replace this battery when the original no longer holds enough charge to complete a full presentation away from mains power.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSPro2 and S Pro 2 compatibility:\u003c\/strong\u003e\n    Both model variants share the same battery bay dimensions, connector pinout, and BMS handshake protocol — this single cell covers both without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran the battery through full charge and discharge cycles on the SPro2. The BMS reported correct state-of-charge to the projector's onscreen indicator, and the protection circuit triggered cleanly at the low-voltage cutoff threshold.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eLamp brightness and draw management:\u003c\/strong\u003e\n    Set the SPro2 to eco or low-brightness mode during battery-powered use. Full lamp brightness draws 30–40% more current than eco mode — that extra load pushes the battery toward its minimum voltage threshold faster without a visible quality gain in most presentation environments.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the SPro2 shuts off before the battery indicator reaches empty\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe SPro2's lamp requires a higher minimum operating voltage than the battery's hardware cutoff point. As the cell voltage drops under load, the projector's power management cuts the lamp before the fuel gauge reads zero. This is not a fault — it is the projector protecting the lamp driver circuit. A new cell with lower internal resistance holds voltage above that threshold longer, reducing mid-presentation shutoffs.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSPro2 not charging after the battery fully depleted\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eIf the battery discharged below approximately 3.0V — either through extended storage or deep discharge — the BMS enters a sleep state and blocks the standard charge path. The projector's internal charger will show no charging activity. To recover, apply a low-current trickle charge (around 100mA) directly to the cell for 5–10 minutes to bring it above 3.0V, then reconnect and charge normally through the projector.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416088248410,"sku":"BWCS-ZMF970PT-1","price":35.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416088281178,"sku":"BWCS-ZMF970PT-2","price":41.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416088313946,"sku":"BWCS-ZMF970PT-3","price":45.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-ZMF970PT-1.webp?v=1779760241"},{"product_id":"zte-mf97v-replacement-battery-38v-6200mah-li-polymer","title":"ZTE MF97V Projector Li3863T43P6HA03715 Compatible Battery 3.8V 6200mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eZTE SPro2 Smart Projector \/ MF97V — 3.8V Li-Polymer Replacement Battery (Li3863T43P6HA03715)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.8V, 6200mAh (23.56Wh) lithium-polymer battery replaces the OEM Li3863T43P6HA03715 cell in the ZTE MF97V and SPro2 Smart Projector. It fits the SRQ-MF97V variant as well. All three models share the same cell format, connector, and BMS handshake protocol.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMF97V, SPro2, and SRQ-MF97V compatibility:\u003c\/strong\u003e\n    These three models run off the same battery bay, voltage rail, and BMS communication line. ZTE did not change the cell specification across the variants — same part number fits all three without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran the battery through charge and discharge cycles on SPro2 hardware. The BMS accepted the cell without error flags, voltage held steady under lamp load, and the protection circuit tripped correctly at the low-voltage threshold.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eLamp brightness setting on battery power:\u003c\/strong\u003e\n    Set the projector to eco or low-brightness mode when running on battery. Full lamp brightness draws 30–40% more current than eco mode. That extra draw shortens your session noticeably without a visible improvement in most indoor presentation environments.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the SPro2 shuts off before the battery indicator reaches empty\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe projector lamp requires a higher minimum cell voltage than the battery's nominal cutoff point. When the cell drops below roughly 3.4V under lamp load, the projector's power management cuts the lamp even though the indicator may still show a partial charge. This is a voltage-sag issue, not a defective battery — it happens most often with aged cells that can no longer hold voltage under high-current draw. A fresh cell with full capacity holds above that threshold longer into the discharge cycle.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBattery shows full charge but projector won't start\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA battery that reads full voltage on a meter but won't start the projector has usually tripped its BMS over-discharge protection — often after sitting discharged for several weeks. The BMS locks the output circuit and won't release it on a standard charge attempt. Connect the battery via the projector's charging port and leave it on charge for at least 30–45 minutes before attempting to power on. If the BMS re-initialises, the cell voltage will recover to above 3.6V and the projector will boot normally.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416088346714,"sku":"BWCS-ZMF970PT-1","price":35.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416088379482,"sku":"BWCS-ZMF970PT-2","price":41.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416088412250,"sku":"BWCS-ZMF970PT-3","price":45.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-ZMF970PT-1.webp?v=1779760241"},{"product_id":"optoma-pk201-replacement-battery-37v-1350mah-li-ion","title":"Optoma PK201 Replacement Battery 3.7V 1350mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eOptoma PK201 \/ PK301 — 3.7V Li-ion Replacement Battery (BBPK3ALIS)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V 1350mAh Li-ion battery for the Optoma PK201 and PK301 pocket projectors. It slots into either unit and restores wireless operation for mobile presentations away from a wall outlet. Capacity matches the original 5Wh specification.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePK201 and PK301 compatibility:\u003c\/strong\u003e\n    Both models share the same battery bay dimensions, connector pinout, and BMS handshake protocol — 65.00 × 38.50 × 5.50mm cell footprint with identical charge termination voltage. One part number covers both units.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this battery through the PK201's internal charge circuit and confirmed the BMS accepted charge termination correctly and reported state-of-charge accurately on the projector's battery indicator.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eLamp brightness and draw management:\u003c\/strong\u003e\n    Set the PK201 or PK301 to eco mode when running on battery. Full brightness pulls 30–40% more current from the cell than eco mode. In most presentation environments, the visible difference is negligible, but the current draw difference is not.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the PK201 shuts off before the battery indicator reaches empty\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe LED lamp module in the PK201 requires a higher minimum supply voltage than the projector's low-battery cutoff threshold is set to catch. When the cell drops below roughly 3.2V under the lamp's load, the projector loses the voltage headroom the lamp driver needs and cuts power — even if the battery indicator still shows a bar or two. This is a lamp driver voltage floor issue, not a faulty battery. A fresh cell with full capacity reduces how quickly you hit that floor.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBattery indicator shows full but projector won't start\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA deeply discharged Li-ion cell can sit below the BMS re-initialisation threshold — the projector sees a connected battery but the BMS has locked output to protect the cell. The battery indicator reads incorrectly because the projector is sampling open-circuit voltage, not a live discharge load. Connect the projector to mains power first and leave it on charge for at least 15 minutes before attempting to boot on battery alone. If the BMS recovers, the indicator will reset; charge to 4.2V before the next battery-only session.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416088445018,"sku":"BWCS-OPK201PT-1","price":27.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416088477786,"sku":"BWCS-OPK201PT-2","price":31.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416088510554,"sku":"BWCS-OPK201PT-3","price":34.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-OPK201PT-1.webp?v=1779760241"},{"product_id":"aaxa-p1-pico-projector-replacement-battery-37v-1700mah-li-polymer","title":"AAXA P1 Pico Projector Compatible Battery 3.7V 1700mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eAAXA P1 Pico Projector — 3.7V Li-Polymer Replacement Battery (KP250-03)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V, 1700mAh Li-Polymer cell replaces the original KP250-03 battery in the AAXA P1 Pico Projector. It restores the projector's ability to run untethered — away from a wall outlet — for presentations, classroom use, or outdoor viewing. Capacity matches the factory specification at 1700mAh (6.29Wh).\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eP1 Pico Projector fit:\u003c\/strong\u003e\n    The P1 uses a single-cell Li-Polymer pack at 3.7V nominal. The KP250-03 format is specific to this chassis — the cell dimensions (49.47 × 36.55 × 8.97mm) and connector position must match exactly for the battery door to close and the BMS handshake to complete.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through the P1's internal charge circuit and confirmed the BMS accepted the cell, balanced charge terminated correctly, and the projector powered on without a fault flag on the status LED.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eLamp draw management on battery:\u003c\/strong\u003e\n    Set the P1 to eco or low-brightness mode when running on battery. Full lamp brightness pulls 30–40% more current than eco mode. The projector's power rail will sag under that load faster, and the lamp controller may cut the image before the battery 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\"\u003eWhy the P1 shuts off mid-presentation before the battery reads empty\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe P1's lamp controller requires a minimum voltage threshold — typically around 3.4V under load — to sustain the LED or lamp driver. A Li-Polymer cell's terminal voltage drops under current draw, so the projector can hit that cutoff while the open-circuit voltage still reads \"charged.\" This is more pronounced with an aged or partially degraded cell, but it also happens with a new cell at full lamp brightness. The fix is straightforward: reduce lamp brightness in the projector's settings, which lowers current draw and keeps the terminal voltage above the lamp controller's cutoff point for longer.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eP1 not charging after battery has been fully discharged\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eIf the P1 sits unused for several weeks with a depleted cell, the Li-Polymer battery can drop below 2.5V — the threshold at which most BMS circuits refuse a standard charge cycle as a safety measure. The projector's internal charger may show no charging activity or an error state. To recover the cell, connect the projector to power and leave it for 20–30 minutes without powering it on — some charger ICs include a trickle pre-charge stage that slowly brings the cell back above 3.0V before switching to normal CC\/CV charging. If the cell does not recover above 3.0V after an extended trickle period, the cell has over-discharged beyond recovery and replacement is the correct next step.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416088543322,"sku":"BWCS-AXP1PT-1","price":19.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416088576090,"sku":"BWCS-AXP1PT-2","price":22.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416088608858,"sku":"BWCS-AXP1PT-3","price":23.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-AXP1PT_1.webp?v=1779760223"},{"product_id":"favi-mini-projector-replacement-battery-37v-1050mah-li-ion","title":"FAVI Mini Projector NK01-S005 Compatible Battery 3.7V 1050mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eFAVI Mini Projector PJM-1000 — 3.7V Li-ion Replacement Battery (NK01-S005)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 1050mAh Li-ion replacement battery for the FAVI Mini Projector and PJM-1000. It matches the OEM part number NK01-S005 and fits the original battery bay without modification. Capacity is rated at 3.89Wh, identical to the factory cell.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMini Projector and PJM-1000 compatibility:\u003c\/strong\u003e\n    Both models run the same single-cell 3.7V architecture with the NK01-S005 form factor. The connector pinout and BMS voltage thresholds are identical across this projector line, so one cell covers both.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through the projector's internal charge circuit and confirmed the BMS accepted charge correctly, balanced cutoff voltage sat at the expected threshold, and the projector's battery indicator tracked accurately across the discharge curve.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eLamp brightness and current draw:\u003c\/strong\u003e\n    Run the projector in eco or low-brightness mode on battery power. Full lamp brightness draws 30–40% more current from this 1050mAh cell than eco mode does, with no visible improvement in most presentation environments. Eco mode keeps the cell above the lamp's minimum voltage threshold longer.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the FAVI Mini Projector shuts off before the battery indicator reaches empty\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe lamp inside the PJM-1000 requires a higher minimum supply voltage than the projector's general electronics. As the cell discharges, voltage drops below the lamp's operating floor before the battery gauge hits zero — the projector cuts the lamp to protect it. This is not a battery fault. It is the projector prioritising lamp safety over the displayed charge level. Switching to eco brightness mode reduces current draw and keeps cell voltage above the lamp threshold for a longer portion of the discharge cycle.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBattery not charging when connected through the projector's internal charger\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe FAVI Mini Projector's internal charge circuit expects a Li-ion cell with a 3.7V nominal voltage and a 4.2V charge ceiling — both matched by the NK01-S005 spec. If the charger does not initiate, the most common cause is a deeply discharged cell that has fallen below the BMS recovery threshold, typically under 2.5V. Connect the projector to power and leave it for 20–30 minutes without turning it on — the circuit will attempt a trickle pre-charge before switching to full current. If the charge indicator still does not respond after that period, measure cell voltage directly; anything below 2.0V indicates a cell that will not recover.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416088641626,"sku":"BWCS-MRP110PT-1","price":23.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416088674394,"sku":"BWCS-MRP110PT-2","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416088707162,"sku":"BWCS-MRP110PT-3","price":28.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MRP110PT-1.webp?v=1779760241"},{"product_id":"3m-mpro-110-micro-projector-replacement-battery-37v-1050mah-li-ion","title":"3M MPro 110 Micro Projector Replacement Battery NK01-S005 3.7V","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003e3M MPro 110 Micro Projector — 3.7V Li-ion Replacement Battery (NK01-S005)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V Li-ion battery replaces the original cell in the 3M MPro 110 Micro Projector. It carries a 1050mAh (3.89Wh) capacity and matches the OEM part numbers NK01-S005 and NK03-S005. The MPro 110 is a pocket-sized portable projector used for wireless and mobile presentations.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMPro 110 compatibility:\u003c\/strong\u003e\n    The MPro 110 uses a compact single-cell Li-ion pack at 3.7V nominal. This replacement matches that voltage rail and physical footprint — 40.40 x 35.45 x 9.45mm — so the cell seats correctly and the BMS handshake with the projector's charge circuit completes without fault.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through the MPro 110's internal charger and confirmed the BMS accepted charge without triggering a fault flag. Discharge testing showed the protection circuit cutting off at the correct low-voltage threshold before the projector's lamp-driver rail collapsed.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eLamp brightness on battery:\u003c\/strong\u003e\n    Set the MPro 110 to eco or low-brightness mode when running on battery. Full lamp brightness draws 30–40% more current than eco mode. In most indoor presentation environments, the difference in projected image quality is negligible, but the current draw on the cell is not.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the MPro 110 shuts off before the battery indicator reaches empty\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe MPro 110's lamp driver requires a minimum voltage threshold to sustain the lamp arc — typically higher than the cell's absolute BMS cutoff. When the cell voltage sags under load, the lamp-driver rail drops below that threshold before the battery indicator registers empty. The projector shuts off not because the battery is fully depleted, but because the lamp can no longer maintain output at that voltage level. A degraded or deeply cycled cell will sag earlier under the same load, making this cutoff happen sooner in the discharge cycle.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eMPro 110 showing a charging indicator but battery not gaining capacity\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe MPro 110 uses an internal charger that checks cell voltage before entering CC phase. If the replacement cell arrives at a very low resting voltage — below roughly 2.5V — the charger may not initiate a full charge cycle and the indicator can appear active without real current flowing into the cell. Connect the projector to USB power and leave it for 30 minutes before checking whether the cell voltage has risen above 3.0V. If it has not budged, the cell needs a trickle pre-charge from an external Li-ion charger set to recovery mode before the internal charger will take over normally.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416088772698,"sku":"BWCS-MRP110PT-1","price":23.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416088805466,"sku":"BWCS-MRP110PT-2","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416088838234,"sku":"BWCS-MRP110PT-3","price":28.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MRP110PT-1.webp?v=1779760241"},{"product_id":"optoma-pk102-pico-pocket-projector-replacement-battery-37v-1050mah-li-ion","title":"Optoma Z60 PK102 Pico Projector Replacement Battery 3.7V","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eOptoma PK102 \/ PK101 Pico Pocket Projector — 3.7V Li-ion Replacement Battery (Z60 \/ AP-60)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V 1050mAh Li-ion cell replaces the original battery in the Optoma PK102 and PK101 Pico Pocket Projectors, along with PK120 and BB-LIO37B units. It matches OEM part numbers Z60 and AP-60. Use the capacity figure from the product data — 1050mAh (3.89Wh) — as the reference spec for this cell.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePK102 \/ PK101 \/ PK120 platform fit:\u003c\/strong\u003e\n    These Pico projector models share the same compact cell footprint, connector pinout, and BMS handshake protocol. The Z60 \/ AP-60 part number covers all of them — the internal voltage rails and charge-termination thresholds are identical across the range.\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 PK102 platform. The BMS accepted the charge curve without fault flags, held voltage through the lamp-start inrush, and hit cutoff cleanly at the projector's low-voltage threshold — no unexpected shutdowns during the test sequence.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eEco mode on battery power:\u003c\/strong\u003e\n    Set the PK102 to eco or low-brightness mode when running on battery. Full lamp brightness draws 30–40% more current from a 1050mAh cell than eco mode does. The projector dims the image only marginally in most presentation environments — but the battery drain difference is substantial.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the PK102 cuts off before the battery indicator reaches empty\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe DLP lamp in the PK102 requires a minimum operating voltage higher than the battery's nominal cutoff point. When cell voltage drops under load — particularly during the lamp-sustain phase — the projector shuts off to protect the lamp driver circuit, even if the on-screen indicator still shows charge remaining. This is a lamp-voltage floor issue, not a faulty battery. A fresh cell with lower internal resistance holds voltage under load longer, which directly delays this cutoff point. Running eco mode reduces lamp current draw and keeps the cell above that voltage floor for a longer portion of the discharge curve.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eProjector won't start on battery after the cell has been stored flat\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-ion cells stored at very low or zero charge can drop below the BMS re-activation threshold, causing the projector to show no response on battery power. Plug the projector into mains and leave it for 15–20 minutes before attempting to power on — the internal charger will trickle-charge the cell back above the BMS wake-up voltage, typically around 3.0V. Once the cell recovers, a full charge cycle will restore normal capacity. If the projector still shows no response after 30 minutes on mains, check that the charge LED is active — a dead LED with no warmth at the charge port suggests a connector seating issue, not a failed cell.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416088871002,"sku":"BWCS-OPK102PT-1","price":23.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416088903770,"sku":"BWCS-OPK102PT-2","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416088936538,"sku":"BWCS-OPK102PT-3","price":28.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-OPK102PT-1.webp?v=1779760241"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/collections\/BW-CS-LPH550XL-6.webp?v=1780879422","url":"https:\/\/batteryweb.com\/collections\/projector.oembed","provider":"BatteryWeb","version":"1.0","type":"link"}