{"product_id":"alcatel-one-touch-990-replacement-battery-37v-1300mah-li-ion","title":"Alcatel One Touch 990 Compatible Battery CAB31P0000C1 3.7V","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eAlcatel One Touch 990 \/ OT-908 — 3.7V Li-ion Replacement Battery (CAB31P0000C1)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 1300mAh lithium-ion battery for the Alcatel One Touch 990 and OT-908 series smartphones. It replaces OEM part numbers CAB31P0000C1, CAB31P0001C1, TB-4T0058200, and BY71. Fit the new cell when the original no longer holds charge or the phone shuts down unexpectedly under load.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eOne Touch 990 and OT-908 series:\u003c\/strong\u003e\n    Both model lines share the same 3.7V cell footprint, connector pinout, and BMS handshake protocol — one cell covers the full compatibility range listed above.\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 OT-990 platform. The BMS accepted the cell on the first cycle, charge current ramped normally, and the protection circuit tripped at the expected low-voltage cutoff without falsely triggering on screen or modem load spikes.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first use:\u003c\/strong\u003e\n    On first installation, disable any fast-charge mode and run one full discharge-to-charge cycle. This lets the fuel gauge IC map its coulomb counter against the new cell's actual discharge curve before high-current charging begins on 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 One Touch 990 reports the wrong battery percentage after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe fuel gauge IC on the OT-990 stores a learned discharge curve from the old cell in its coulomb counter. When a new cell goes in, that stored curve no longer matches the actual voltage-to-capacity relationship of the replacement. The phone reads voltage, applies the old curve, and outputs a percentage that drifts or jumps. One complete discharge below 10% followed by an uninterrupted charge to 100% forces the IC to rewrite the curve against the new cell's characteristics.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–30% remaining on the new cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the cell voltage drops sharply under combined modem-transmit and display load — a voltage cliff the fuel gauge did not predict. The phone's power IC sees the rail drop below its cutoff threshold and shuts down, even though the displayed percentage looks safe. The root cause is an uncalibrated gauge reading a cell with different internal resistance than the original. Run the full calibration cycle first; if shutdowns persist after one full cycle, check that the connector is fully seated and measure resting voltage — it should sit above 3.6V after a full charge.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43405054541914,"sku":"BWCS-OT990SL-1","price":23.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43405054574682,"sku":"BWCS-OT990SL-2","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43405054607450,"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\/alcatel-one-touch-990-replacement-battery-37v-1300mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}