{"product_id":"umi-umidigi-power-3-replacement-battery-385v-5000mah-li-polymer","title":"UMI UMIDIGI Power 3 Replacement Battery 3.85V 5000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eUMI UMIDIGI Power 3 — 3.85V Li-Polymer Replacement Battery (1ICP\/6\/65\/87)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.85V, 5000mAh Li-Polymer cell replaces the original battery in the UMIDIGI Power 3 smartphone. It matches the OEM part number 1ICP\/6\/65\/87 and fits the Power 3's physical bay at 86.00 × 64.36 × 5.10mm. Capacity is 19.25Wh — identical to the factory specification.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eUMIDIGI Power 3 fitment:\u003c\/strong\u003e\n    The Power 3 uses a dedicated battery bay with a proprietary connector pinout tied to the fuel gauge IC. This cell matches that connector and communicates correctly with the phone's coulomb counter — no handshake errors reported during testing.\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 Power 3 mainboard. The BMS accepted the full 5000mAh charge without tripping an over-voltage cutoff, and the fuel gauge IC tracked state-of-charge accurately after one complete calibration cycle.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle fuel gauge reset:\u003c\/strong\u003e\n    After fitting this cell, disable fast charging and run one full discharge down to automatic shutdown, then charge uninterrupted to 100%. This lets the fuel gauge IC map its coulomb-counting baseline against the new cell's discharge curve before fast charge current is applied.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the Power 3 reports wrong battery percentage after a cell swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe UMIDIGI Power 3 uses a fuel gauge IC that stores a learned discharge curve from the original cell. When a new cell goes in, that stored curve no longer matches the actual voltage-versus-capacity profile of the replacement. The IC reads voltage and estimates percentage against the old data, so it can show 40% when the cell is closer to 15%. One full uninterrupted discharge-to-shutdown followed by a complete charge cycle forces the IC to rewrite its reference table. After that cycle, percentage 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 cell voltage drops below the phone's minimum load threshold under a high-draw event — typically the LTE modem firing at full power or the screen at peak brightness. A new cell that hasn't been calibrated can sit at a nominal resting voltage that looks like 25% charge, but sags sharply under load, hitting the 3.4V hardware cutoff before the OS has time to trigger a graceful shutdown. Run the first-cycle calibration discharge described above. If shutdowns continue past cycle two, check that the battery connector is fully seated — a partial connection raises contact resistance and worsens voltage sag under load.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43391885934682,"sku":"BWCS-UMP300SL-1","price":34.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43391885967450,"sku":"BWCS-UMP300SL-2","price":39.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43391886000218,"sku":"BWCS-UMP300SL-3","price":43.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-UMP300SL-1.webp?v=1779142560","url":"https:\/\/batteryweb.com\/products\/umi-umidigi-power-3-replacement-battery-385v-5000mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}