{"product_id":"lenovo-s920-replacement-battery-38v-2000mah-li-ion","title":"Lenovo S920 Replacement Battery BL208 3.8V 2000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLenovo S920 — 3.8V Li-ion Replacement Battery (BL208)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.8V, 2000mAh Li-ion replacement battery for the Lenovo S920 smartphone. It slots in where the original BL208 sits and restores power delivery to the display, modem, and application processor. Capacity matches the factory spec at 7.6Wh.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eS920 fit confirmation:\u003c\/strong\u003e\n    The S920 uses a specific connector pinout and BMS handshake tied to the BL208 cell format. This replacement matches that pinout and the charge IC voltage thresholds the S920 expects — 4.35V charge ceiling, 3.0V low cutoff.\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 S920 platform. The BMS accepted the charge handshake on the first cycle, held voltage above 3.6V under combined modem and display load, and tripped cutoff cleanly at the low-voltage threshold without false shutdowns.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first use:\u003c\/strong\u003e\n    After fitting this cell, disable any fast charge mode and run one full discharge down to automatic shutoff, then charge uninterrupted to 100%. This gives the S920 fuel gauge IC one clean reference cycle against the new cell's discharge curve before it starts reporting percentages.\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 S920 after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe S920's fuel gauge IC stores a discharge curve calibrated to the original cell. A new cell with a different internal resistance profile hits a voltage cliff at a different state of charge than the old map expects. When modem transmit or screen brightness pulls current, the cell voltage dips below the shutdown threshold faster than the gauge predicts. Running one full discharge-to-shutoff cycle lets the coulomb counter reset its endpoint and eliminates most premature shutdowns.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePhone shows wrong battery percentage after replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe S920 stores learned battery parameters in the fuel gauge IC — those values are tied to the worn cell you removed, not this one. Until the IC relearns, percentage readouts can jump, stall, or read 20% higher than actual. Force a full recalibration: charge to 100% with the device off, then use normally until the phone shuts down on its own, then charge back to 100% without interruption. After that cycle, percentage tracking aligns to the new cell's actual discharge curve.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43404261064794,"sku":"BWCS-LVK920SL-1","price":23.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43404261097562,"sku":"BWCS-LVK920SL-2","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43404261130330,"sku":"BWCS-LVK920SL-3","price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LVK920SL-1.webp?v=1779369511","url":"https:\/\/batteryweb.com\/products\/lenovo-s920-replacement-battery-38v-2000mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}