{"product_id":"quilive-replacement-battery-37v-900mah-li-ion","title":"Quilive 3.7V Smartphone Replacement Battery 900mAh Li-ion","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eQuilive 872687-874761 — 3.7V Li-ion 900mAh Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 900mAh Li-ion cell sourced under the Quilive X-Longer series, carrying OEM part numbers 872687-874761 and 886337. It fits the specific smartphone models these part numbers reference. Voltage and capacity match the original cell specification at 3.7V and 3.33Wh.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eX-Longer series cell compatibility:\u003c\/strong\u003e\n    Both OEM part numbers (872687-874761 and 886337) map to the same voltage rail and physical footprint — 53.00 × 34.00 × 4.30mm — so the BMS handshake and connector orientation carry across 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 load on the bench. The BMS held cutoff cleanly at both ends — no undervoltage passthrough and no overcharge drift past 4.2V.\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 full discharge-charge cycle. The fuel gauge IC in these phones calibrates against the cell's discharge curve — running a slow cycle first gives it accurate data before high-current charging adds variables.\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 failure. The phone's fuel gauge IC is still running the discharge model it built for the old, degraded cell. A fresh cell holds a steeper voltage curve, and when modem or screen load spikes, the reported percentage doesn't match the actual cell voltage. The phone's low-voltage protection trips before the gauge catches up. One full slow discharge-charge cycle lets the coulomb counter rebuild its model against the new cell — after that, the shutdowns stop.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eUSB-PD or fast charge not accepting on first cycle after swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eSome charge ICs run a brief impedance check on the first cycle after a new cell is connected. If the cell's internal resistance reads higher than the IC's expected range — common on a fresh, unconditioned cell — the charger falls back to standard 5V rather than triggering the fast-charge handshake. This isn't a fault. Run one standard charge cycle at the wall brick's base rate first. After that first cycle, fast charge should negotiate normally at whatever protocol the device supports.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43405015810138,"sku":"BWCS-DEP510SL-1","price":23.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43405015842906,"sku":"BWCS-DEP510SL-2","price":27.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43405015875674,"sku":"BWCS-DEP510SL-3","price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-DEP510SL_1.webp?v=1779369805","url":"https:\/\/batteryweb.com\/products\/quilive-replacement-battery-37v-900mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}