{"product_id":"lg-g3-replacement-battery-38v-6000mah-li-ion","title":"BL-53YH LG G3 Replacement Battery 3.8V 6000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLG G3 \/ D855 Series — 3.8V Li-ion Replacement Battery (BL-53YH)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.8V, 6000mAh Li-ion replacement battery for the LG G3 smartphone. It fits the D855, D855 LTE, D855K, and related G3 variants using OEM part number BL-53YH. Swap it in when the original cell has degraded and the phone no longer holds a usable charge.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eG3 and D855 series fit:\u003c\/strong\u003e\n    All listed G3 variants share the same 3.8V cell footprint, BL-53YH connector pinout, and BMS handshake protocol. The replacement cell matches that specification so the charge IC accepts it without error flags.\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 the G3 platform. The BMS accepted charge current without dropping into protection mode, and the fuel gauge IC tracked state-of-charge without hard cutoffs or error codes.\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-to-charge cycle before re-enabling it. This lets the fuel gauge IC build a fresh discharge curve against the new cell 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\"\u003eWhy the G3 reports wrong battery percentage after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe G3 uses a coulomb counter inside the fuel gauge IC to estimate state-of-charge. That counter was calibrated against the discharge curve of the original cell. A new cell — especially one with higher capacity — has a different curve, so the IC maps percentage to voltage incorrectly at first. The phone may show 50% and drop immediately, or read 100% before the cell is actually full. One full discharge down to automatic shutdown, followed by a full charge to 4.2V, forces the IC to remap 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 is a voltage cliff problem, not a capacity problem. Under combined load — LTE modem active, screen at full brightness — the cell's internal resistance causes a voltage sag that trips the BMS low-voltage cutoff before the fuel gauge reaches 0%. On an uncalibrated fuel gauge IC, the displayed percentage at the moment of cutoff can look anywhere from 15% to 35%. Run one full calibration cycle first. If shutdowns persist after calibration, confirm resting cell voltage is sitting above 3.7V after a full charge — anything lower suggests a cell defect.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43404246712410,"sku":"BWCS-LKF400WL-1","price":38.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43404246745178,"sku":"BWCS-LKF400WL-2","price":44.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43404246777946,"sku":"BWCS-LKF400WL-3","price":49.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LKF400WL-1.webp?v=1779369448","url":"https:\/\/batteryweb.com\/products\/lg-g3-replacement-battery-38v-6000mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}