Huawei MateBook D 16 Compatible Battery HB6081V1ECW-41B 15.28V

Huawei MateBook D 16 — 15.28V Li-Polymer Replacement Battery (HB6081V1ECW-41B)

This 15.28V, 3600mAh (55.01Wh) Li-Polymer cell replaces the original battery in the Huawei MateBook D 16 and related models. It fits the HBL-W29, MagicBook Pro 2020, and HLY-W19RP variants that share the same connector and BMS handshake protocol. Capacity figures come directly from product data — not estimated from third-party sources.

• MateBook D 16 platform fit: The MateBook D 16, HBL-W29, and MagicBook Pro 2020 all run the same 15.28V four-cell Li-Polymer architecture with an identical connector pinout and BMS communication line. Swapping a cell from any of these models into another does not require firmware changes — the voltage rail and protection circuit match.
• Bench tested on actual hardware: We cycled this cell on a MateBook D 16 unit and confirmed the BMS handshake completed without fault codes. The protection circuit engaged correctly at low-voltage cutoff, and charge termination fired at the expected voltage ceiling during full-charge cycles.
• Post-install calibration for MateBook D 16: After fitting this cell, run one full discharge to hibernate-cutoff, then charge uninterrupted to 100%. The MateBook D 16's BIOS battery learn cycle resets on that sequence — skipping it causes the fuel gauge IC to misread state-of-charge and triggers a false "battery poor" health warning in the system dashboard.

Why the MateBook D 16 shuts down at 20–30% after a battery swap

This happens because the fuel gauge IC is still reading state-of-charge against the impedance profile of the old, degraded cell. Under combined CPU and display load, the new cell's actual voltage is fine — but the IC hits a programmed threshold it mapped to the worn cell and triggers an early shutdown. The BIOS hasn't yet learned the new cell's voltage curve. One full discharge-to-hibernate followed by an uninterrupted charge to 100% rewrites the learn cycle. After two or three complete cycles, the shutdown behaviour clears and the gauge tracks correctly.

BIOS showing wrong Wh rating after fitting the replacement cell

The Wh value the BIOS displays is pulled from EEPROM data embedded in the battery's protection circuit board — not measured live from the cell. If the EEPROM stores the rated chemistry value and the actual cell has a slightly different nominal capacity, the two figures diverge. This is a data mismatch, not a defective unit. The cell itself operates at the correct 15.28V and 55.01Wh. Confirm actual capacity by running a full discharge cycle and checking what the OS energy report logs as full-charge capacity against the 55.01Wh spec.