{"product_id":"alcatel-ot-880-replacement-battery-37v-800mah-li-ion","title":"Alcatel OT-880 CAB3122001C1 Compatible Battery 3.7V 800mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eAlcatel OT-880 \/ One Touch XTRA — 3.7V Li-ion Replacement Battery (CAB3122001C1)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V, 800mAh Li-ion cell replaces the original battery in the Alcatel OT-880, OT-880A, One Touch XTRA, OT-710D, and over 70 additional Alcatel handsets sharing the same battery bay and connector. It cross-references OEM part numbers CAB3122001C1, CAB3120000C1, CAB20K0000C1, TB-04BA, BY42, BTR510AB, and CAB3120000C3. Capacity is 800mAh — match that figure against your original label before ordering.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMulti-model fit — OT-880 series and One Touch XTRA:\u003c\/strong\u003e\n    These handsets share a common 3.7V battery bay, connector tab spacing, and contact polarity. The BMS handshake is identical across the group, so one cell covers the full range without electrical 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 load on an OT-880 chassis. The BMS accepted charge current at the correct rate, protection circuits tripped at the expected low-voltage threshold, and contact resistance across the gold pads stayed within spec throughout.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first use:\u003c\/strong\u003e\n    After fitting this cell, run one complete discharge down to automatic shutdown, then charge uninterrupted to 100% before resuming normal use. The OT-880's fuel gauge IC was calibrated to your old cell's discharge curve — this single full cycle resets it against the new cell so percentage readings stay accurate.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the OT-880 reports wrong battery percentage after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe OT-880 uses a fuel gauge IC that tracks charge state by modelling the cell's discharge curve over time. When the original cell ages, that curve drifts — and the IC recalibrates slowly to match it. A new 800mAh cell presents a different internal impedance profile, so the IC's stored model no longer fits the cell it's reading. The result is percentage jumps, early shutdowns, or a battery that reads 40% and then drops to zero. One full discharge-to-shutdown followed by an uninterrupted charge to 100% forces the IC to rebuild its model against the replacement cell.\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 happens when the fuel gauge IC still holds the old cell's discharge curve and overestimates remaining capacity. The new cell hits a voltage cliff — typically around 3.4V under modem or display load — before the gauge has counted it down to zero. The phone shuts down not because the cell is defective but because actual terminal voltage dropped below the protection threshold faster than the IC predicted. Run one full discharge cycle to let the IC observe where the real voltage cliff sits on this cell, then recharge fully to 3.7V nominal before returning to regular use.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43405101039706,"sku":"BWCS-OT880SL-1","price":22.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43405101072474,"sku":"BWCS-OT880SL-2","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43405101105242,"sku":"BWCS-OT880SL-3","price":27.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-OT880SL-1.webp?v=1779369970","url":"https:\/\/batteryweb.com\/products\/alcatel-ot-880-replacement-battery-37v-800mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}