{"product_id":"lg-vx8500-replacement-battery-37v-700mah-li-ion","title":"LG VX8500 Replacement Battery 3.7V 700mAh Li-ion","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLG VX8500 Chocolate 3 — 3.7V Li-ion Replacement Battery (LGLP-AGKM \/ SBPP0017001)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V, 700mAh lithium-ion cell replaces the original battery in the LG VX8500, VX8500r, and Chocolate 3. It matches the OEM footprint at 56.97 × 43.76 × 5.61mm and slots into the same battery bay without modification. If the original cell is swelling, draining within hours, or failing to power on, this is the direct swap.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eVX8500 and Chocolate 3 fitment:\u003c\/strong\u003e\n    These models share the same battery bay geometry, contact pin layout, and 3.7V nominal voltage rail — which is why a single cell covers all four variant SKUs including VX-8500 and VX8500r.\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 VX8500 unit. The BMS accepted charge without fault codes, maintained stable voltage through call-load simulation, and held cutoff above 2.75V under sustained screen-on draw.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first install:\u003c\/strong\u003e\n    After fitting this cell, run one complete discharge down to auto-shutoff, then charge uninterrupted to 100% before resuming normal use. The VX8500's fuel gauge IC was calibrated to the old cell's discharge curve — skipping this step causes erratic percentage readings from the first hour.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the VX8500 reports wrong battery percentage after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe VX8500 uses a coulomb-counting fuel gauge IC that builds its charge model from historical discharge data stored against the original cell. A new cell has a different internal resistance and discharge curve, so the IC's predictions fall out of sync immediately. You'll see the percentage jump, stall, or read 20% when the phone is actually near full. One full discharge-to-shutoff followed by an uninterrupted charge to 100% forces the IC to reset its learned curve against the new cell's actual behaviour.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 15–25% on the replacement cell\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the cell voltage drops sharply under load — a voltage cliff — faster than the fuel gauge predicted. The modem radio and display draw current spikes the 700mAh cell cannot sustain once capacity dips below the cliff point, so the BMS cuts power to protect the cell before the UI reaches 0%. It is not a fault with the replacement — it is the fuel gauge IC still running the old discharge model. After completing one full calibration cycle, the shutoff point shifts back to where it should be, typically below 5%.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43409435394138,"sku":"BWCS-VX8500SL-1","price":22.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43409435426906,"sku":"BWCS-VX8500SL-2","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43409435459674,"sku":"BWCS-VX8500SL-3","price":27.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-VX8500SL-1.webp?v=1779579689","url":"https:\/\/batteryweb.com\/products\/lg-vx8500-replacement-battery-37v-700mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}