{"product_id":"alcatel-ot-c650-replacement-battery-37v-650mah-li-ion","title":"Alcatel OT-C650 Replacement Battery 3.7V 650mAh Li-ion","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eAlcatel OT-C650 \/ OT-C651 Series — 3.7V Li-ion Replacement Battery (3DS11080AAAA)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 650mAh Li-ion cell that replaces the original battery in the Alcatel OT-C650, OT-C651, OT-C652, OT-E159, and over 65 additional models. It matches the OEM footprint at 53.05 × 33.48 × 4.78mm. Install it when the original cell can no longer hold a charge through a normal day.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMulti-model fit across the OT-C6xx and OT-E series:\u003c\/strong\u003e\n    These candybar handsets share the same battery bay dimensions, connector pinout, and 3.7V supply rail. One cell covers the full range 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 charge and discharge on the OT-C651 platform. The BMS accepted charge current correctly, and the protection circuit tripped as expected at the low-voltage cutoff threshold.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration after swap:\u003c\/strong\u003e\n    On first use after installation, run one full discharge down to auto-shutoff, then charge uninterrupted to 100%. This gives the phone's fuel gauge IC a complete reference curve against the new cell before it starts reporting percentages.\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-C650 reports wrong battery percentage after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe fuel gauge IC on these Alcatel devices learns the discharge curve of the installed cell over time. When you swap in a new cell, the IC still holds the old curve in memory. Until it recalibrates, the percentage reading can be off by 15–25%, showing full charge when the cell is actually at 80%. One complete discharge-to-shutoff and full recharge cycle resets the coulomb counter and aligns the gauge to the new cell's actual capacity.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePhone shuts down suddenly at 20–30% after replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA new Li-ion cell has higher internal impedance than a broken-in cell. When the screen backlight and radio stack draw current simultaneously, the voltage at the battery terminals dips sharply — briefly dropping below the minimum the phone's PMIC will accept. The BMS reads this as a fault and cuts power, even though the fuel gauge still shows remaining charge. This typically resolves after three full charge-discharge cycles, which reduce cell impedance. If shutdowns persist past cycle three, check that the battery connector is fully seated — a partial connection adds resistance and worsens the voltage sag.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43409461444698,"sku":"BWCS-OT651SL-1","price":22.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43409461477466,"sku":"BWCS-OT651SL-2","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43409461510234,"sku":"BWCS-OT651SL-3","price":27.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-OT651SL-1.webp?v=1779579784","url":"https:\/\/batteryweb.com\/products\/alcatel-ot-c650-replacement-battery-37v-650mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}