{"product_id":"alcatel-ot-606-replacement-battery-37v-700mah-li-ion","title":"Alcatel OT-606 Replacement Battery CAB31C0000C1 3.7V 700mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eAlcatel OT-606 Series — 3.7V Li-ion Replacement Battery (CAB31C0000C1)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 700mAh Li-ion cell that fits the Alcatel OT-606, OT-606C, OT-606A, and OT-606 Sparq. It replaces the original CAB31C0000C1 (also cross-referenced as OT-BY23) when the existing cell has degraded and can no longer hold adequate charge. Physical dimensions are 37.68 × 37.24 × 5.41mm — measure your original before fitting if you are unsure.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eOT-606 variant coverage:\u003c\/strong\u003e\n    The OT-606, OT-606C, OT-606A, and OT-606 Sparq all share the same battery bay dimensions, voltage rail, and connector pinout. One cell fits the full family 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 full discharge-charge sequences and confirmed the BMS communicates correctly with the charge IC — protection cutoffs for overcurrent and over-voltage triggered at expected thresholds.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first use:\u003c\/strong\u003e\n    After fitting this cell, disable fast charging if your charger supports it, then run one complete discharge down to automatic shutdown followed by a full charge. The fuel gauge IC on the OT-606 calibrates its coulomb counter against the actual discharge curve of the new cell on that first cycle — skipping this step causes erratic percentage readings.\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 OT-606 after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe OT-606's fuel gauge IC retains the discharge curve of the old, degraded cell after a swap. When the new cell's actual resting voltage no longer matches the IC's stored curve, the phone misreads remaining capacity. Under modem or screen load — both are high-current draws for a 700mAh cell — the battery voltage dips sharply, and the phone hits its hardware undervoltage cutoff before the OS registers low battery. Run one full discharge-charge cycle without interruption. After that cycle, the coulomb counter resets to the new cell's actual curve and the premature shutdowns stop.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eOT-606 not powering on after the replacement battery sat in storage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-ion cells self-discharge in storage. If this battery shipped or sat unused long enough to drop below approximately 2.5V, the BMS enters lockout mode to prevent cell damage — the phone will show no signs of life when you press the power button. Connect the phone to a wall charger, not a USB port, and leave it for 20–30 minutes without pressing any buttons. The charge IC trickle-charges the cell back above the BMS re-enable threshold, typically around 2.9V, at which point normal charging resumes and the phone powers on.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43405089964122,"sku":"BWCS-OT606SL-1","price":27.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43405089996890,"sku":"BWCS-OT606SL-2","price":31.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43405090029658,"sku":"BWCS-OT606SL-3","price":33.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-OT606SL-1.webp?v=1779369970","url":"https:\/\/batteryweb.com\/products\/alcatel-ot-606-replacement-battery-37v-700mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}