{"product_id":"hisense-cs668-replacement-battery-37v-1200mah-li-ion","title":"Hisense CS668 Replacement Battery LI3795bkG 3.7V 1200mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eHisense CS668 — 3.7V Li-ion Replacement Battery (LI3795bkG)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 1200mAh Li-ion cell that replaces the original LI3795bkG battery in the Hisense CS668 smartphone. It fits directly into the CS668 battery bay and connects to the same three-pin flex connector as the factory cell. Dimensions are 53.00 × 33.90 × 5.70mm — match these before ordering if your unit has been repaired before.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCS668 fitment:\u003c\/strong\u003e\n    The CS668 uses a dedicated battery bay sized for this exact cell footprint. The BMS handshake runs through a three-pin connector — voltage, ground, and NTC thermistor. Any cell swap must present the correct impedance on the NTC line or the charge IC will refuse to engage.\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 on CS668-class hardware and confirmed the BMS accepted the cell, the NTC line read within spec, and the charge IC completed a full constant-current\/constant-voltage cycle without tripping a fault flag.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-use fuel gauge recalibration:\u003c\/strong\u003e\n    After fitting this cell, disable fast charging if your CS668 supports it, then run one full discharge-to-charge cycle at standard rate. This lets the fuel gauge IC map the new cell's discharge curve before it starts logging coulomb counts against an uncalibrated baseline.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the CS668 reports wrong battery percentage after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe CS668 uses a fuel gauge IC that stores a learned discharge curve from the original cell. When you swap in a new cell, that stored curve no longer matches the actual voltage-to-capacity relationship of the replacement. The gauge keeps reading against the old curve, so the percentage shown on screen can be off by 10–20%. One complete slow discharge from 100% to auto-shutoff, followed by a full charge, forces the IC to re-anchor its coulomb counter to the new cell. After that cycle, percentage accuracy normalises.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–30% on the CS668 after replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis is a voltage cliff issue, not a capacity fault. Under peak modem or screen load, the cell voltage drops sharply near the lower state-of-charge range — faster than the fuel gauge predicts. The phone's protection circuit reads the voltage dip as a low-battery shutdown threshold being crossed, even though the gauge still shows charge remaining. Let the phone run through two full slow charge-discharge cycles so the fuel gauge IC recalibrates its endpoint voltage. After calibration, shutdowns that were occurring at 25% typically shift down to below 5%.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43404285378650,"sku":"BWCS-DEP215SL-1","price":23.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43404285411418,"sku":"BWCS-DEP215SL-2","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43404285444186,"sku":"BWCS-DEP215SL-3","price":28.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-DEP215SL-1.webp?v=1779369550","url":"https:\/\/batteryweb.com\/products\/hisense-cs668-replacement-battery-37v-1200mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}