{"product_id":"huawei-honor-x1-7d-504l-replacement-battery-37v-4100mah-li-polymer","title":"Huawei Honor X1 7D-504L Replacement Battery 3.7V 4100mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eHuawei Honor X1 7D-504L — 3.7V Li-Polymer Replacement Battery (HB4269B6EAW)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 4100mAh (15.17Wh) lithium-polymer replacement battery for the Huawei Honor X1 tablet. It fits the Honor X1 7D-504L and Honor X1 4G 7D-504L. Swap it in when the original cell can no longer hold a usable charge or fails to power the device at all.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eHonor X1 7D-504L and 4G variant:\u003c\/strong\u003e\n    Both models share the same battery bay dimensions and connector pinout. The HB4269B6EAW fits both without modification — same 126 x 70 x 4mm cell footprint and identical BMS handshake protocol.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through full charge and discharge on the Honor X1 platform. The BMS accepted the cell without fault codes, and the charge IC reached CV phase correctly at the expected voltage threshold.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first use:\u003c\/strong\u003e\n    Disable fast charging for the first complete discharge-charge cycle after installation. This lets the fuel gauge IC 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\"\u003eWhy the Honor X1 reports wrong battery percentage after a cell swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe Honor X1 uses a fuel gauge IC that builds its capacity model from historical charge and discharge data tied to the original cell. When a new cell goes in, the IC still references the old curve. Percentage readings will drift — often showing full charge early or dropping faster than expected. One full, uninterrupted discharge-to-shutdown followed by a complete charge cycle forces the IC to rebuild its model against the new cell. After that cycle, readings stabilise.\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 has not yet recalibrated and misreads the cell's remaining voltage headroom. Under load — particularly when the display backlights fully or the modem transmits — the cell voltage drops sharply, crossing the BMS undervoltage cutoff while the OS still shows 20–30%. It is not a faulty cell. Run one complete discharge cycle without interruption, letting the device shut down naturally at 0%, then charge uninterrupted to 100%. After that cycle the gauge IC recalibrates and cutoffs align with the displayed percentage.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43404263293018,"sku":"BWCS-HUX100XL-1","price":27.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43404263325786,"sku":"BWCS-HUX100XL-2","price":31.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43404263358554,"sku":"BWCS-HUX100XL-3","price":34.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-HUX100XL-1.webp?v=1779369511","url":"https:\/\/batteryweb.com\/products\/huawei-honor-x1-7d-504l-replacement-battery-37v-4100mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}