Clevo N131BU Replacement Battery 11.4V 2600mAh N130BAT-3

Clevo N131BU Series — 11.4V Li-Polymer Replacement Battery (N130BAT-3)

This is an 11.4V, 2600mAh (29.64Wh) Li-Polymer battery for the Clevo N131BU, N131WU, N130WU, and NP3130 notebooks. It replaces OEM part N130BAT-3 and cross-references 3ICP5/62/72, 6-87-N130S-3U9, and 6-87-N130S-3U9A. Swap it in when the original cell can no longer hold charge or the system forces AC-only operation.

• N130/N131 platform fit: The N131BU, N131WU, N130WU, and NP3130 all share the same 11.4V three-cell architecture, connector pinout, and BMS handshake protocol — one battery part number covers the full group without modification.
• Bench tested on actual hardware: We ran this cell through charge, discharge, and BMS communication checks on N131-series hardware. The protection circuit responded correctly to overcurrent and end-of-discharge cutoff events, and the SMBus data lines reported accurate state-of-charge to the host.
• Post-install calibration for the N131BU: After fitting, run the notebook on battery until it hibernates at low charge, then charge uninterrupted to 100%. This forces the BIOS battery learn cycle to reset against the new cell 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 N131BU BIOS reads health data from the battery's EEPROM and compares it against the previous cell's logged cycle count and capacity history. A brand-new cell has no cycle history, so the BIOS flags it as degraded or unknown — this is a data mismatch, not a faulty battery. Running one full discharge-to-hibernate followed by a complete uninterrupted charge gives the fuel gauge IC enough data to recalibrate. After two to three full cycles the health indicator normalises and the warning clears.

Notebook shutting down at 20–30% shown on the fuel gauge

This happens when the cell voltage drops below the BMS cutoff threshold under combined CPU and display load before the fuel gauge reaches zero — a voltage cliff the gauge IC did not predict. The root cause is usually an uncalibrated fuel gauge reading from the old cell's learned curve still applied to the new chemistry. Run the N131BU through two full discharge-to-hibernate and full-charge cycles without interruption. After calibration, the fuel gauge tracks the actual cell voltage accurately and the premature shutdowns stop; check that voltage under load stays above 10.2V during the second calibration cycle to confirm the cell is healthy.