HP Pavilion 11M Replacement Battery KN02XL 7.7V 4600mAh

HP Pavilion 11M Series — 7.7V Li-ion Replacement Battery (KN02XL)

This is a 7.7V, 4600mAh (35.42Wh) Li-ion battery for the HP Pavilion 11M and Pavilion x360 11-ad series ultraportable laptops. It matches OEM part numbers KN02XL, HSTNN-IB7R, HSTNN-UB7F, and TPN-W124. It physically seats and connects the same way as the factory cell.

• Pavilion 11M and x360 11-ad platform fit: These models share the same 7.7V two-cell architecture, identical connector pinout, and BMS handshake protocol — which is why a single cell covers the Pavilion 11M-AD000, 11M-AD013DX, x360 11-ad022tu, and 28 additional variants on the same board revision.
• Bench tested on actual hardware: We cycled this cell on a Pavilion x360 11-ad unit and confirmed the BMS accepted the new EEPROM data without fault codes, the charge circuit progressed through CC/CV stages correctly, and the system reported capacity within normal range after two full cycles.
• Post-install discharge cycle on Pavilion 11M: After fitting, run the laptop on battery until Windows triggers hibernate at its cutoff threshold, then charge uninterrupted to 100%. This resets the BIOS battery learn cycle and clears the inaccurate health warning that appears after every cell swap on this platform.

BIOS reporting poor battery health immediately after fitting a new cell

The HP Pavilion 11M reads EEPROM data from the battery's protection circuit to determine health status. When a new cell arrives, that EEPROM reflects factory defaults — not data calibrated to your system — so the BIOS flags it as degraded or unknown. This is not a fault with the cell. Run one complete discharge-to-hibernate cycle followed by a full uninterrupted charge to 100%, and the BIOS learn cycle will overwrite the stale health data. After two to three calibration cycles, the HP Battery Check utility should report normal status.

Laptop shuts down unexpectedly at 20–30% charge shown on screen

This happens when the fuel gauge IC hasn't yet mapped the new cell's discharge curve. The OS thinks 25% remains, but the actual cell voltage has already hit the BMS low-voltage cutoff — typically around 6.0V for a 7.7V two-cell pack under combined CPU and display load. The mismatch causes an abrupt shutdown rather than a graceful hibernate. To fix this, complete two to three full discharge-to-cutoff and charge-to-100% cycles so the fuel gauge IC can recalibrate its state-of-charge model against the actual cell characteristics.