{"product_id":"coolpad-5910-replacement-battery-37v-2100mah-li-ion","title":"Coolpad 5910 Compatible Battery 3.7V 2100mAh CPLD-312","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eCoolpad 5910 \/ 5950 \/ 8750 — 3.7V Li-ion Replacement Battery (CPLD-312)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 2100mAh (7.77Wh) Li-ion battery for the Coolpad 5910, 5950, 8750, and 7296, among other compatible models. It replaces OEM parts CPLD-312, CPLD-351, and CPLD-342. If your Coolpad shuts down unexpectedly, won't hold a charge, or won't power on at all, this cell restores normal operation.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMulti-model fit across the Coolpad lineup:\u003c\/strong\u003e\n    The 5910, 5950, 8750, and 7296 share the same battery bay dimensions, connector pinout, and 3.7V nominal voltage rail. The BMS handshake protocol is consistent across these models, so one cell covers the full group 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 discharge on compatible Coolpad hardware. The BMS accepted the full charge curve without triggering a cutoff fault, and voltage held steady across the discharge profile under both screen-on and modem-active loads.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first cycle:\u003c\/strong\u003e\n    On first use after installation, disable fast charging and run one complete discharge-charge cycle at standard current. This lets the fuel gauge IC map its coulomb counter against the new cell's actual discharge curve before high-current charging pushes current into an uncalibrated 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 Coolpad 5910 reports wrong battery percentage after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe fuel gauge IC on Coolpad devices stores a learned discharge curve from the original cell. When you swap the cell, the IC still references that old curve to estimate state of charge. The result is percentage readings that don't match real capacity — often reading 30% and then cutting off immediately. One full discharge-charge cycle at standard current forces the coulomb counter to rebuild its reference map against the new cell. After that cycle, percentage reporting stabilises.\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, not a capacity problem. Under high-current loads — active LTE modem, screen at full brightness — the cell voltage drops sharply below the BMS cutoff threshold even while the fuel gauge still shows charge remaining. The phone interprets the voltage drop as a critical low and shuts down. Fully charge the battery, then run the device under moderate load for the first few cycles to condition the cell. If shutdowns continue past three full cycles, check that resting cell voltage reads 4.1–4.2V after a full charge.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43404218171482,"sku":"BWCS-CPD875SL-1","price":23.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43404218204250,"sku":"BWCS-CPD875SL-2","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43404218237018,"sku":"BWCS-CPD875SL-3","price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-CPD875SL-1.webp?v=1779369390","url":"https:\/\/batteryweb.com\/products\/coolpad-5910-replacement-battery-37v-2100mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}