Fujitsu FMV-7180MR3 Compatible Battery 14.4V 4400mAh FM-36

Fujitsu LifeBook E2010 / FMV-7180MR3 Series — 14.4V Li-ion Replacement Battery (FM-36)

This is a 14.4V, 4400mAh (63.36Wh) Li-ion battery for Fujitsu FMV and LifeBook notebooks. It fits the FMV-7180MR3, LifeBook E7010, LifeBook E2010, FMV-BIBLO MR16B, and seven additional models in the same series. OEM cross-references are FM-36, FPCBP59AP, and FPCBP59.

• FMV / LifeBook E-series platform fit: These models share the same 14.4V battery rail, physical connector pinout, and BMS handshake protocol — which is why a single cell covers the full range. The battery communicates charge state and health data over the same SMBus line across all listed variants.
• Bench tested on actual hardware: We ran this cell through charge and discharge cycles on a LifeBook E-series unit. The BMS handshake completed on first insertion, the BIOS recognised the pack without prompting a fault code, and the charge circuit cycled correctly from depleted to full.
• First-install cycle on Fujitsu notebooks: After fitting this battery, run the laptop on battery power until it hibernates from low charge — do not interrupt. 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.

Why the FMV-7180MR3 shuts down at 20–30% charge remaining

The BIOS fuel gauge IC on this platform maps voltage curves against data stored from the original cell. A new cell with a slightly different discharge curve hits a voltage threshold the firmware interprets as critically low — even though charge physically remains. The laptop cuts power before the cell is actually depleted. Running two full discharge-to-hibernate and uninterrupted-recharge cycles recalibrates the fuel gauge against the new cell's actual voltage curve. After calibration, the shutdown point drops back to the correct low-charge threshold, typically below 5%.

BIOS reporting 0% or "poor health" immediately after battery swap

This happens because the BIOS reads health data from EEPROM registers on the battery pack — and the new cell's EEPROM values do not match the wear history the firmware was tracking on the old pack. The system flags the mismatch as a fault rather than a fresh cell. It is not a hardware fault with the replacement battery. Boot into the Fujitsu battery utility or run a full discharge-and-recharge cycle to prompt the BIOS to write new baseline data to its registers, clearing the warning.