Xiaomi NoteBook Pro 14 2022 R14B07W Replacement Battery 7.72V 7200mAh

Xiaomi NoteBook Pro 14 2022 — 7.72V Li-Polymer Replacement Battery (R14B07W)

This 7.72V, 7200mAh (55.58Wh) lithium-polymer cell replaces the R14B07W battery in the Xiaomi NoteBook Pro 14 2022. It fits the 14-inch chassis and reconnects to the existing BMS harness using the original connector. Install it when the stock cell no longer holds charge or the system flags battery health as degraded.

• NoteBook Pro 14 2022 fit: This model uses a single-cell Li-Polymer pack rated at 7.72V nominal. The R14B07W shares the same voltage rail, connector pinout, and BMS communication protocol as the factory unit — no adapter or modification needed.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on the NoteBook Pro 14 platform. The BMS handshake completed on first connection, charge current ramped correctly through CC/CV stages, and no protection trips occurred during discharge to cutoff.
• Post-install calibration on the NoteBook Pro 14: After fitting this cell, run one full discharge to hibernate cutoff, then charge uninterrupted to 100%. This resets the BIOS battery learn cycle and clears the inaccurate health warning the firmware posts after every cell swap.

BIOS reporting poor battery health after fitting the R14B07W

When you swap the physical cell, the BIOS still holds EEPROM data written by the old battery. That stored data includes cycle count, design capacity, and health percentage — none of which reflects the new cell. The firmware compares live readings against that stale baseline and flags a mismatch as poor health. One full discharge-to-hibernate followed by a complete uninterrupted charge forces the BIOS to rewrite the learn cycle data against the new cell's actual chemistry, clearing the warning.

NoteBook Pro 14 shutting down at 20–30% charge shown on screen

This happens when the fuel gauge IC's state-of-charge map no longer matches the new cell's actual voltage curve. The gauge triggers a low-battery shutdown at what it calculates as 20–30%, but the cell still has usable capacity below that threshold. It is a calibration gap, not a fault in the replacement cell. Run two to three full discharge-to-hibernate and full-charge cycles to let the fuel gauge IC remap its readings against the R14B07W — after calibration, the cutoff should track correctly to below 3.0V per cell.