{"product_id":"apple-iphone-xr-replacement-battery-38v-2900mah-li-polymer","title":"Apple iPhone XR Replacement Battery 3.8V 2900mAh 616-00471","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eApple iPhone XR — 3.8V Li-Polymer Replacement Battery (616-00471)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.8V, 2900mAh Li-Polymer cell replaces the original battery in the Apple iPhone XR, including variants A2105, A2106, and A2108. It fits the same footprint as the OEM unit at 101.34 × 44.32 × 4.16mm and connects to the same flex cable and BMS on the logic board. Install it when the original cell can no longer hold charge through a full day of use.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eiPhone XR A-series variant coverage:\u003c\/strong\u003e\n    The A2105, A2106, and A2108 share an identical battery bay, connector pinout, and BMS handshake protocol. One cell fits all three regional 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 an iPhone XR logic board. The BMS accepted the cell, reported voltage correctly to iOS, and held the charge IC in CC\/CV mode without tripping overcurrent protection.\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 for one complete discharge-charge cycle. This lets the fuel gauge IC recalibrate against the new cell's discharge curve before high-current charging pushes current into 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\"\u003eWhy the iPhone XR reports wrong battery percentage after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe iPhone XR uses a coulomb-counting fuel gauge IC that tracks charge by measuring current in and out over time. When you install a new cell, the IC still holds the discharge curve it built around the old, degraded cell. It cannot know the new cell's actual capacity until it maps a full cycle. Until that calibration happens, iOS will show percentage figures that do not match real remaining charge — often reading 30% while the phone still has significant capacity left, or dropping suddenly near the end.\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 is still calibrated to the old cell and the phone hits a high-current load spike — typically the modem during a call or the display at full brightness. The new cell can sustain the load, but the IC reads voltage against the wrong curve and triggers a low-voltage shutdown before the cell is actually exhausted. Run one full discharge down to automatic power-off, then charge uninterrupted to 100%. After that cycle, the coulomb counter resets its reference and the shutdowns stop.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43392018677850,"sku":"BWCS-IPH830SL-1","price":28.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43392018710618,"sku":"BWCS-IPH830SL-2","price":32.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43392018743386,"sku":"BWCS-IPH830SL-3","price":35.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-IPH830SL-1.webp?v=1779142944","url":"https:\/\/batteryweb.com\/products\/apple-iphone-xr-replacement-battery-38v-2900mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}