{"product_id":"sony-xperia-xa1-ultra-replacement-battery-38v-2700mah-li-polymer","title":"Sony Xperia XA1 Ultra LIP1641ERPC Replacement Battery 3.8V 2700mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSony Xperia XA1 Ultra — 3.8V Li-Polymer Replacement Battery (LIP1641ERPC)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.8V, 2700mAh lithium-polymer cell replaces the factory battery in the Sony Xperia XA1 Ultra and XA1 Ultra Dual TD-LTE (G3226 and Redwood DS variants included). It matches the OEM part numbers LIP1641ERPC and LIP1641ERPXC. Physical dimensions are 93.10 × 51.62 × 3.80mm — a direct size match for the XA1 Ultra battery bay.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eXA1 Ultra platform fit:\u003c\/strong\u003e\n    The XA1 Ultra, XA1 Ultra Dual TD-LTE, G3226, and Redwood DS all share the same battery cavity dimensions, voltage rail, and flex connector pinout. One cell covers the full XA1 Ultra line without adapter or modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell on the XA1 Ultra mainboard and confirmed the BMS handshake completes correctly — the charge IC accepted the cell, reported state-of-charge without error flags, and the protection circuit tripped at the expected low-voltage cutoff threshold.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first use:\u003c\/strong\u003e\n    On first installation, disable fast charging and run one full discharge-to-charge cycle at standard current. This allows the fuel gauge IC to map the new cell's discharge curve before high-current charging pushes current into 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\"\u003eSudden shutdown at 20–30% on the Xperia XA1 Ultra after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe XA1 Ultra's Snapdragon 652 pulls significant current spikes when the modem switches bands or the 6-inch display hits peak brightness. A new cell with a slightly different internal resistance profile can hit the BMS low-voltage cutoff under that load even when the fuel gauge still reads 20–30%. The charge IC interprets the voltage sag as a critically low cell and cuts power immediately. Run one full uninterrupted discharge cycle — no charging mid-cycle — to let the coulomb counter recalibrate its endpoint voltage against the actual cell. After that cycle, unexpected shutoffs at mid-percentage typically stop.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eUSB fast charging not triggering after battery replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eSony's Quick Charge handshake on the XA1 Ultra requires the BMS to report a healthy cell state before the charge IC allows elevated current. On a freshly installed cell, the BMS may flag an uncalibrated state-of-charge, causing the charger to fall back to standard 5V\/0.9A input. This is not a fault with the charger or the USB port. Charge the phone once at standard rate until it reaches 100%, then disconnect and allow one full discharge. After that cycle, reconnect the original Sony charger — the BMS will have a calibrated reference and fast charge should re-engage at the correct voltage.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43392014843994,"sku":"BWCS-ERG322SL-1","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43392014876762,"sku":"BWCS-ERG322SL-2","price":28.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43392014909530,"sku":"BWCS-ERG322SL-3","price":31.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-ERG322SL-1.webp?v=1779142904","url":"https:\/\/batteryweb.com\/products\/sony-xperia-xa1-ultra-replacement-battery-38v-2700mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}