{"product_id":"umi-umidigi-one-pro-replacement-battery-385v-3250mah-li-polymer","title":"UMI UMIDIGI One Pro Replacement Battery 3.85V 3250mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eUMI UMIDIGI One Pro — 3.85V Li-Polymer Replacement Battery (1ICP\/5\/64\/58)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.85V, 3250mAh (12.51Wh) lithium-polymer cell for the UMIDIGI One Pro smartphone. It replaces the original internal battery when the existing cell has degraded, swells, or no longer holds a useful charge. Part number 1ICP\/5\/64\/58 matches the OEM specification for this device.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eUMIDIGI One Pro fit:\u003c\/strong\u003e\n    The One Pro uses a dedicated battery bay sized for this 75.76 × 64.54 × 4.50mm cell. The connector pinout and BMS communication lines match the phone's charge IC directly — no adapters or modifications needed.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through the UMIDIGI One Pro's charge IC and confirmed BMS handshake, overvoltage cutoff at 4.35V, and undervoltage protection triggering correctly below 3.0V under load.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first use:\u003c\/strong\u003e\n    On the first cycle after installation, disable fast charging and run one full discharge down to automatic shutdown, then charge uninterrupted to 100%. This lets the phone's coulomb counter map the new cell's discharge curve before fast-charge current is applied to an uncalibrated cell.\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 UMIDIGI One Pro after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eA new lithium-polymer cell has a slightly different internal resistance profile than the worn cell the fuel gauge IC was trained on. Under peak loads — screen at full brightness, LTE active, GPS running — the phone's power rail demands a current spike the gauge hasn't accounted for yet. Voltage drops faster than predicted, the IC reads it as a hard cutoff threshold, and the phone shuts off even though percentage still showed mid-range. One complete uninterrupted discharge-charge cycle resets the coulomb counter and eliminates this behaviour.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eUSB-PD or fast charge not activating on the first cycle after replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eAfter a battery swap, the charge IC on the UMIDIGI One Pro sometimes defaults to standard 5V\/1A charging on the first cycle because the BMS on the new cell hasn't yet completed its authentication handshake with the phone's power management unit. This isn't a fault with the cable or charger. Run one full standard charge to 100%, let the phone sit at rest for two minutes, then reconnect the fast charger — the protocol negotiation completes correctly on the second session. If fast charge still doesn't activate, confirm the charger outputs at least 9V\/2A.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43391877677146,"sku":"BWCS-UMP110SL-1","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43391877709914,"sku":"BWCS-UMP110SL-2","price":30.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43391877742682,"sku":"BWCS-UMP110SL-3","price":33.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-UMP110SL-1.webp?v=1779142499","url":"https:\/\/batteryweb.com\/products\/umi-umidigi-one-pro-replacement-battery-385v-3250mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}