{"product_id":"xiaomi-mi-pad-5-pro-replacement-battery-387v-4200mah-li-polymer","title":"Xiaomi Mi Pad 5 Pro BN4D Replacement Battery 3.87V 4200mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eXiaomi Mi Pad 5 Pro — 3.87V Li-Polymer Replacement Battery (BN4D)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.87V, 4200mAh (16.25Wh) Li-Polymer replacement battery for the Xiaomi Mi Pad 5 Pro and Mi Pad 5 Pro 5G tablets. It replaces OEM part number BN4D and fits the 11-inch display variant across both Wi-Fi and 5G models. Install it when the original cell no longer holds charge or causes unexpected shutdowns.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMi Pad 5 Pro and 5 Pro 5G compatibility:\u003c\/strong\u003e\n    Both the Wi-Fi and 5G variants of the Pad 5 Pro use the same BN4D cell, identical 3.87V rail, connector pinout, and BMS handshake. One battery covers both SKUs.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this battery through full charge and discharge passes on a Pad 5 Pro unit. The BMS accepted the cell without fault codes, charge IC communication held stable, and the protection circuit responded correctly to cutoff thresholds at both ends.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration after swap:\u003c\/strong\u003e\n    After fitting this battery, run the tablet down to automatic shutoff, then charge it uninterrupted to 100% without using the device. This gives the fuel gauge IC a full reference window against the new cell and corrects the inaccurate percentage readings that typically appear immediately after a replacement.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eTablet shutting down at 15–25% remaining after battery replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens because the fuel gauge IC was calibrated against the old, degraded cell. When a new cell is installed, the IC doesn't yet know where the real voltage cliff sits under combined display and Wi-Fi load. The tablet hits the hardware low-voltage cutoff before the OS percentage reaches zero, so it shuts off at what looks like 15–25% remaining. One full discharge-to-shutoff cycle followed by an uninterrupted charge to 100% resets the reference points and stops the early cutoff.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eFast charging unavailable after fitting a new BN4D cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eXiaomi's proprietary fast charge protocol requires the charge IC and battery BMS to complete a handshake before the charger steps up power delivery. On a freshly installed cell, this handshake sometimes doesn't complete on the very first charge cycle. Use the original Xiaomi 67W adapter — not a third-party USB-PD charger — plug in and let the first charge run to 100% uninterrupted. Fast charge typically re-enables from the second cycle onward once the charge IC logs a completed session with the new cell.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43425826898010,"sku":"BWCS-MUP500SL-1","price":33.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43425826930778,"sku":"BWCS-MUP500SL-2","price":38.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43425826963546,"sku":"BWCS-MUP500SL-3","price":42.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MUP500SL-1.webp?v=1779929837","url":"https:\/\/batteryweb.com\/products\/xiaomi-mi-pad-5-pro-replacement-battery-387v-4200mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}