{"product_id":"telme-c145-replacement-battery-37v-900mah-li-ion","title":"AK-C145 TELME C145 Replacement Battery 3.7V 900mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eTELME C145 \/ C145B — 3.7V Li-ion Replacement Battery (AK-C145)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 900mAh Li-ion cell for the TELME C145 and C145B mobile phones. It replaces the original AK-C145 battery when the existing cell no longer holds charge through normal use. Dimensions are 46.47 × 39.79 × 5.33mm — confirm your original before fitting.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eC145 and C145B compatibility:\u003c\/strong\u003e\n    Both models share the same battery bay dimensions, connector pinout, and charge IC voltage thresholds. One cell covers both variants 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 C145 platform. The BMS responded correctly to the phone's charge termination signal and held float voltage without drift at full capacity.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first use:\u003c\/strong\u003e\n    On first use after fitting, run one full discharge down to automatic shutdown, then charge uninterrupted to 100%. This gives the phone's fuel gauge IC a complete discharge curve to reference — without it, percentage readings can jump or cut off early.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the C145 reports wrong battery percentage after a cell swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe C145 uses a fuel gauge IC that builds its capacity model from observed discharge curves. When you fit a new cell, the IC is still calibrated to the old cell's degraded curve. It will misread state-of-charge until it completes at least one full cycle on the new cell. Percentage jumps of 10–15% in either direction are normal in this recalibration window. Run a full discharge-to-shutdown followed by a full charge and the readings stabilise.\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's stored discharge curve doesn't match the new cell's actual voltage profile. The phone interprets a voltage drop — caused by modem or backlight load — as a depleted cell and cuts power before the real charge is gone. It is not a fault with the cell itself. Force one complete cycle: discharge until the phone shuts off on its own, then charge to 100% at standard current, and the shutdowns stop once the IC locks onto the correct voltage-to-capacity relationship for the new cell.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43404299108442,"sku":"BWCS-EAC145XL-1","price":22.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43404299141210,"sku":"BWCS-EAC145XL-2","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43404299173978,"sku":"BWCS-EAC145XL-3","price":27.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-EAC145XL-1.webp?v=1779369642","url":"https:\/\/batteryweb.com\/products\/telme-c145-replacement-battery-37v-900mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}