{"product_id":"amazing-a6-replacement-battery-38v-2500mah-li-ion","title":"Amazing A6 3.8V Replacement Battery 2500mAh Li-ion","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eAmazing A6 — 3.8V Li-ion 2500mAh Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.8V, 2500mAh Li-ion replacement battery for the Amazing A6 smartphone. It fits directly into the A6 and restores power capacity lost through cell degradation over charge cycles. Capacity is 9.5Wh, matching the original cell specification.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAmazing A6 fit:\u003c\/strong\u003e\n    The A6 uses a single-cell 3.8V nominal Li-ion pack with a direct connector to the charge IC on the mainboard. This cell matches that voltage rail and connector pinout. No BMS handshake mismatch was observed during installation.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran a full charge and discharge cycle through the A6's charge IC. The BMS accepted the cell without fault codes, and the fuel gauge IC began tracking state of charge normally across the full discharge window.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle fuel gauge recalibration:\u003c\/strong\u003e\n    After installing this cell, disable fast charging for the first complete discharge-charge cycle. The fuel gauge IC on the A6 calibrates its coulomb counter against the cell's discharge curve — running a slow cycle first gives it accurate data before high-current charging begins.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the A6 reports wrong battery percentage after a cell swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe A6 uses a fuel gauge IC that builds a discharge model from repeated charge cycles. When the original degraded cell is replaced, the IC still holds the old cell's curve in memory. It maps voltage readings to percentage using that stale model, so the reported figure drifts from real state of charge. One full slow discharge down to auto-shutoff, followed by a complete charge to 100%, forces the IC to rewrite its reference curve against the new cell.\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 hasn't yet recalibrated and the cell voltage drops sharply under modem or display load — a voltage cliff the old model didn't predict. The phone's protection circuit trips before the reported percentage reaches zero. It is not a faulty cell. Complete the first full discharge-charge cycle without fast charging, and the coulomb counter will align cutoff with the actual cell floor — typically 3.2V under load.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43404265029722,"sku":"BWCS-ZTV987XL-1","price":24.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43404265062490,"sku":"BWCS-ZTV987XL-2","price":27.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43404265095258,"sku":"BWCS-ZTV987XL-3","price":30.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-ZTV987XL-1.webp?v=1779369525","url":"https:\/\/batteryweb.com\/products\/amazing-a6-replacement-battery-38v-2500mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}