About this replacement
Fujitsu LifeBook M2010 / M2011 — 10.8V Li-ion Replacement Battery (CP432218-01)
This is a 10.8V, 2200mAh (23.76Wh) Li-ion battery for the Fujitsu LifeBook M2010 and M2011 notebooks, as well as the FMV-BIBLO LOOX M/D10 and M/D15 series. It replaces OEM part numbers CP432218-01, FMVNBP173, FPCBP216, FPCBP217, and related variants. Fit the battery, reconnect the latch, and the system recognises it over the SMBus connection immediately.
- LifeBook M2010 / M2011 and LOOX M series compatibility: These models share an identical battery bay geometry, SMBus pin-out, and 10.8V nominal voltage rail. The BMS handshake protocol is the same across the group, so one cell fits all listed variants without adapter or firmware change.
- Bench tested on actual hardware: We cycled this cell on an M2011 board under simultaneous CPU and display load. The BMS held cutoff cleanly at low-voltage threshold with no mid-session trip, and charge termination triggered correctly at full capacity.
- Post-install calibration on the M2010: After fitting, run the laptop on battery until it reaches hibernate-cutoff — do not plug in early. Then charge uninterrupted to 100%. This resets the BIOS battery learn cycle and clears the inaccurate health warning the M2010 BIOS displays after every cell swap.
BIOS reporting poor battery health immediately after fitting a new cell
The LifeBook M2010 BIOS reads health data from the battery's EEPROM on first contact. The new cell's EEPROM contains factory-default values that don't match the laptop's logged charge history, so the BIOS flags the battery as degraded before it has run a single cycle. This is not a fault with the cell. One full discharge-to-hibernate followed by a complete uninterrupted charge resets the learn cycle and resolves the warning. After two to three full cycles the BIOS health readout stabilises.
Laptop shuts down at 20–30% charge shown on the fuel gauge
The fuel gauge IC on the M2010 board calibrates its percentage readout against the old cell's charge curve. A new cell with a slightly different discharge slope causes the IC to underestimate remaining capacity, then hit a voltage cliff where the cell can no longer sustain the combined CPU and display load — resulting in an abrupt shutdown while the gauge still shows charge remaining. The fix is calibration: discharge fully to hibernate-cutoff, charge to 100%, and repeat twice. After calibration cycles the gauge tracks the new cell's actual voltage curve and shutdown at false-low percentages stops.