{"product_id":"meizu-pro-6-replacement-battery-38v-2500mah-li-polymer","title":"MeiZu Pro 6 BT53 Replacement Battery 3.8V 2500mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eMeiZu Pro 6 \/ M570 Series — 3.8V Li-Polymer Replacement Battery (BT53)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.8V, 2500mAh Li-Polymer replacement cell for the MeiZu Pro 6 smartphone (models M570M, M570C, M570Q). It replaces part number BT53 — the original cell used across the Pro 6 lineup. Swap this in when the original cell no longer holds charge through a standard day of use.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eM570M, M570C, M570Q compatibility:\u003c\/strong\u003e\n    All three variants share the same battery bay dimensions, connector pinout, and BMS handshake protocol. The 68.36 × 61.00 × 4.10 mm cell fits each without modification, and the BT53 part number is consistent across all three PCB revisions.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through charge and discharge cycles on a Pro 6 unit. The BMS accepted charging current without triggering thermal cutoff, and the protection circuit responded correctly to low-voltage thresholds at both ends of the cycle.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle fast charge disable:\u003c\/strong\u003e\n    After fitting a new cell, disable mCharge fast charging for one full discharge-charge cycle. This lets the fuel gauge IC map the new cell's discharge curve before high-current charging pushes against an uncalibrated coulomb counter.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the Pro 6 reports wrong battery percentage after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe Pro 6 uses a fuel gauge IC that builds its capacity model from the discharge curve of the original cell. When a new cell goes in, the IC still references that old curve. Percentage readings can sit 10–20% higher than actual state of charge until the IC recalibrates. One complete discharge to auto-off followed by a full uninterrupted charge resets the coulomb counter against the new cell's actual curve. After that cycle, percentage accuracy returns to normal.\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 is a voltage cliff problem, not a capacity problem. When the modem fires at full power — during a call or a data burst — the draw pulls the cell voltage below the BMS cutoff threshold even though the gauge still shows charge remaining. It happens most often when the fuel gauge IC hasn't completed a recalibration cycle and the reported percentage is running ahead of real voltage. Run one full discharge-charge cycle without interruption. If shutdowns persist past that, check that the connector is fully seated — a high-resistance contact causes the same voltage sag under load, triggering cutoff at 3.2V.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43392096239706,"sku":"BWCS-MX571SL-1","price":24.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43392096272474,"sku":"BWCS-MX571SL-2","price":27.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43392096305242,"sku":"BWCS-MX571SL-3","price":30.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MX571SL-1.webp?v=1779143764","url":"https:\/\/batteryweb.com\/products\/meizu-pro-6-replacement-battery-38v-2500mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}