{"product_id":"alcatel-ot-280-replacement-battery-37v-600mah-li-ion","title":"Alcatel OT-280 Compatible Battery 3.7V 600mAh Li-ion CAB3010010C1","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eAlcatel OT-280 \/ OT-505 Series — 3.7V Li-ion Replacement Battery (CAB3010010C1)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V 600mAh Li-ion replacement cell for Alcatel compact mobile phones including the OT-280, OT-363, OT-505, OT-303A, and over 30 additional models sharing the same battery bay. It restores power to phones that no longer hold charge or fail to turn on after the original cell has degraded. Voltage and form factor match OEM spec at 46.60 × 33.90 × 4.70mm.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eOT-280 \/ OT-505 platform compatibility:\u003c\/strong\u003e\n    These models share the same battery bay dimensions, 3.7V nominal rail, and connector pinout across the range — which is why a single cell covers the full group. The BMS handshake is passive on this generation; no proprietary authentication chip to trip.\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-505 platform. The charge IC accepted the cell without fault flags, and the BMS held voltage above the 3.0V low-cutoff threshold through a full discharge sweep under normal phone load.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first cycle:\u003c\/strong\u003e\n    After fitting the new cell, run one full discharge to near shutdown, then charge uninterrupted to 100% before using the phone normally. The fuel gauge IC on these Alcatel models calibrated to the old cell's discharge curve — skipping this step causes the percentage counter to read incorrectly for the first several uses.\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-505 reports wrong battery percentage after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe fuel gauge IC on this Alcatel platform tracks charge state using a coulomb counter referenced against the original cell's discharge curve. Swap in a new cell and that reference is mismatched — the counter hasn't seen the new cell's full capacity range. The phone may show 40% remaining and shut down, or sit at 100% longer than expected. One complete discharge-charge cycle resets the counter's endpoints and brings percentage reporting back in line.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePhone won't power on after sitting in storage with a flat battery\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-ion cells that drop below approximately 2.5V trigger a BMS lockout — the protection circuit opens to prevent further discharge damage, and the phone reads as completely dead. Plugging into a charger may show nothing for the first 5–15 minutes while the charge IC trickle-charges the cell back above the 2.9V re-initialisation threshold. If the phone still won't respond after 20 minutes on a known-good charger, confirm the charger output reaches the handset — try a different cable and adapter before concluding the cell is unrecoverable.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43405084098650,"sku":"BWCS-OT505SL-1","price":22.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43405084131418,"sku":"BWCS-OT505SL-2","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43405084164186,"sku":"BWCS-OT505SL-3","price":27.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-OT505SL-1.webp?v=1779369920","url":"https:\/\/batteryweb.com\/products\/alcatel-ot-280-replacement-battery-37v-600mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}