{"product_id":"htc-wildfire-e-lite-replacement-battery-385v-3000mah-li-polymer","title":"HTC Wildfire E Lite BSF50 Replacement Battery 3.85V 3000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eHTC Wildfire E Lite — 3.85V Li-Polymer Replacement Battery (BSF50)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3000mAh (11.55Wh) Li-Polymer cell built to the BSF50 specification for the HTC Wildfire E Lite smartphone. It fits the original battery bay directly, matching the 78.60 × 59.70 × 4.00mm footprint and 3.85V nominal voltage. If your Wildfire E Lite is shutting down unexpectedly or losing charge rapidly, this replaces the degraded original cell.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eWildfire E Lite compatibility:\u003c\/strong\u003e\n    The BSF50 uses the same connector pinout and BMS handshake protocol as the factory cell. The Wildfire E Lite's charge IC negotiates with the battery over the third pin — this cell passes that handshake so the phone charges normally without flagging an unrecognised battery warning.\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 Wildfire E Lite platform. The BMS held the 4.35V upper cutoff correctly and tripped the low-voltage cutoff at 3.0V per cell — no runaway, no thermal events during CC-CV charging.\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 relying on the percentage indicator. The Wildfire E Lite's fuel gauge IC holds the old cell's discharge curve in memory — one full cycle overwrites it with accurate data for the new 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 Wildfire E Lite reports wrong battery percentage after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe Wildfire E Lite uses a coulomb-counter fuel gauge IC that stores a learned discharge curve from the old cell. When a new cell goes in, the IC applies that old curve to the new cell's actual voltage readings — the mismatch produces percentage errors of 10–25%. The fix is one full discharge down to automatic shutdown, then a full charge to 100% without interruption. After that single cycle, the IC recalibrates its curve to the new cell's chemistry. Subsequent readings stabilise within two or three more cycles.\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 because the replacement cell's actual open-circuit voltage drops steeply below 3.6V under modem or screen load — faster than the fuel gauge IC expects. The phone reads 25% remaining but the cell voltage collapses below the BMS cutoff under the current draw, triggering an immediate shutdown. Power the phone back on and check the reading — if it restarts at the same percentage, the IC is miscalibrated, not the cell. Run one full discharge cycle to let the gauge re-learn the new cell's voltage cliff, and the shutdowns stop.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43391803162714,"sku":"BWCS-HTW210SL-1","price":33.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43391803195482,"sku":"BWCS-HTW210SL-2","price":39.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43391803228250,"sku":"BWCS-HTW210SL-3","price":43.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-HTW210SL-1.webp?v=1779142182","url":"https:\/\/batteryweb.com\/products\/htc-wildfire-e-lite-replacement-battery-385v-3000mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}