{"product_id":"umi-umidigi-a5-pro-replacement-battery-385v-3600mah-li-polymer","title":"UMI UMIDIGI A5 Pro Replacement Battery 3.85V 3600mAh 1ICP\/5\/68\/83","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eUMI UMIDIGI A5 Pro — 3.85V Li-Polymer Replacement Battery (1ICP\/5\/68\/83)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.85V, 3600mAh lithium-polymer cell replaces the original battery in the UMIDIGI A5 Pro smartphone. It matches the OEM part number 1ICP\/5\/68\/83 and fits the physical dimensions of the A5 Pro battery bay at 77.70 × 64.90 × 4.50mm. Voltage, capacity, and connector position are spec-matched to the original.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eUMIDIGI A5 Pro fit:\u003c\/strong\u003e\n    The A5 Pro uses a dedicated battery bay with a ZIF ribbon connector tied to the fuel gauge IC. This cell matches that connector pinout and capacity curve, so the power management IC reads charge state without reconfiguration.\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 load on the A5 Pro platform. The BMS accepted the charge handshake on the first cycle, and the fuel gauge IC tracked state-of-charge without mid-cycle resets or voltage spikes.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle fuel gauge reset:\u003c\/strong\u003e\n    After installation, run one full discharge to 5–10% and then a full charge without interruption before enabling fast charge. This allows the coulomb counter to map the new cell's discharge curve accurately before high-current charging sessions begin.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the A5 Pro reports wrong battery percentage after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe A5 Pro's fuel gauge IC stores a learned discharge curve from the original cell. When a new cell is installed, the IC still references that old curve, so the percentage reading drifts — often showing 100% at lower actual charge or dropping suddenly near 20–30%. The fix is one full uninterrupted discharge-charge cycle, which lets the coulomb counter re-anchor its 0% and 100% endpoints to the new cell. Until that cycle completes, percentage readings will not be accurate. After calibration, the gauge tracks within normal tolerance.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–30% remaining on the replacement cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the fuel gauge IC has not yet calibrated to the new cell's voltage-discharge curve. Near 20–30%, the modem and display draw a combined current spike that drops cell voltage below the BMS cutoff threshold — even though the reported percentage suggests charge remains. The BMS reads actual terminal voltage, not the percentage on screen, so it cuts power to protect the cell. Run a full calibration cycle first: discharge to 5%, charge uninterrupted to 100%, and the shutdowns will stop once the gauge and BMS thresholds realign.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43391877480538,"sku":"BWCS-UMA510SL-1","price":27.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43391877513306,"sku":"BWCS-UMA510SL-2","price":31.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43391877546074,"sku":"BWCS-UMA510SL-3","price":34.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-UMA510SL-1.webp?v=1779142499","url":"https:\/\/batteryweb.com\/products\/umi-umidigi-a5-pro-replacement-battery-385v-3600mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}