{"product_id":"tcl-a990-replacement-battery-37v-1300mah-li-ion","title":"TCL A990 Replacement Battery CAB31P0000C1 3.7V 1300mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eTCL A990 \/ C990 Series — 3.7V Li-ion Replacement Battery (CAB31P0000C1)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 1300mAh Li-ion cell that replaces the original battery in the TCL A990, C990, A919, and A966 smartphones. It matches the OEM part numbers CAB31P0000C1, CAB31P0001C1, and TB-4T0058200. Physical dimensions are 64.30 × 49.50 × 4.50mm — verify against your existing cell before installation.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eA990 \/ C990 \/ A919 \/ A966 platform fit:\u003c\/strong\u003e\n    These models share a common PCB layout and battery connector pinout. The BMS handshake uses the same voltage thresholds across the series, so one cell covers all listed variants without modification.\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 A990 platform. The BMS accepted the cell without error flags, charge termination triggered correctly at 4.2V, and low-voltage cutoff engaged at the expected floor.\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 full discharge-to-charge cycle before enabling it again. This lets the fuel gauge IC map the new cell's discharge curve before high-current charging pushes into an uncalibrated register.\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  \u003cp class=\"bpw-desc-p\"\u003eThis happens because the fuel gauge IC still references the old cell's discharge curve. When the new cell hits a voltage cliff under modem or screen load, the phone shuts down even though the reported percentage looks safe. The fix is one full uninterrupted discharge cycle — drain to automatic shutdown, then charge to 100% without interruption. After that cycle, the coulomb counter re-anchors to the new cell's actual capacity and the shutdowns stop.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePhone won't power on after the battery sat discharged in storage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eIf the cell voltage dropped below roughly 2.5V during storage, the BMS enters lockout to prevent damage. Plugging in USB at that point may show no response for several minutes — this is normal. Leave it connected to a wall charger, not a PC port, for at least 20–30 minutes. Once the BMS sees enough voltage to exit lockout, it will begin accepting charge current and the screen will respond.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43405053657178,"sku":"BWCS-OT990SL-1","price":23.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43405053689946,"sku":"BWCS-OT990SL-2","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43405053722714,"sku":"BWCS-OT990SL-3","price":28.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-OT990SL-1.webp?v=1779369883","url":"https:\/\/batteryweb.com\/products\/tcl-a990-replacement-battery-37v-1300mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}