{"product_id":"total-wireless-a2x-replacement-battery-385v-3300mah-li-polymer","title":"Total Wireless A2X Replacement Battery 3.85V 3300mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eTotal Wireless A2X \/ A508DL — 3.85V Li-Polymer Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3300mAh, 3.85V Li-Polymer battery for the Total Wireless A2X and A508DL smartphones. It replaces a worn or dead original cell that no longer holds charge through a normal day. Capacity figures come from our product data: 3300mAh \/ 12.71Wh.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eA2X and A508DL shared platform:\u003c\/strong\u003e\n    Both models run the same battery bay dimensions — 80.20 × 60.60 × 4.10mm — and use the same connector pinout and BMS handshake voltage, so one cell covers both variants without modification.\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 A508DL platform. The BMS accepted a standard charge cycle without overcurrent flags, and cell voltage at full charge held steady at 4.35V before tapering.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first use:\u003c\/strong\u003e\n    On first use after installation, disable fast charging and run one full discharge-to-charge cycle. This lets the fuel gauge IC map its coulomb counter against the new cell's actual discharge curve before high-current charging 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 replacement cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA new Li-Polymer cell has a steeper voltage cliff than a broken-in cell. When the modem fires a transmission burst or the screen peaks brightness, current draw spikes and cell voltage drops sharply below the BMS cutoff threshold — even though the OS reported 20–30% remaining. The fuel gauge IC is still calibrated to the old cell's curve, so the percentage shown does not match the new cell's actual state of charge. One full slow-charge cycle from 0% to 100% resets the coulomb counter and pushes the cutoff event to a much lower reported percentage.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePhone warm near the battery during first few charges\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA fresh Li-Polymer cell starts with slightly higher internal impedance than a cycled one. The charge IC pushes current into that resistance, and the resulting heat is normal for the first two to three cycles. If surface temperature stays below 40°C and drops after the first full cycle, nothing is wrong. If the phone stays hot past the third charge or shows a thermal warning, check that the battery connector is fully seated — a half-seated connector forces the IC to compensate with higher voltage, which generates additional heat.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43391929122906,"sku":"BWCS-OTL505SL-1","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43391929155674,"sku":"BWCS-OTL505SL-2","price":29.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43391929188442,"sku":"BWCS-OTL505SL-3","price":32.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-OTL505SL-1.webp?v=1779142677","url":"https:\/\/batteryweb.com\/products\/total-wireless-a2x-replacement-battery-385v-3300mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}