Beisite FPB0367S FPCBP596 64Wh laptop battery

Direct replacement for Fujitsu 41CP5/57/79

This 64Wh lithium-ion pack carries part numbers FPB0367S and FPCBP596 and matches the original 15.4V specification. It is a new battery intended for owners of compatible Fujitsu laptops who need to restore factory runtime without modifying the chassis or power circuitry.

Steady discharge at rated voltage

The cell chemistry delivers a stable 15.4V output across the 64Wh capacity, so the laptop sees consistent power during long work sessions rather than a rapid voltage sag after a short burst. Rated at 4196mAh, the pack supports extended unplugged use while the onboard protection circuit manages temperature and current limits under sustained load.

Upgrade from depleted or lower-capacity packs

Replaces part numbers 41CP5, 41CP57 and 41CP79, making the swap worthwhile when the original battery no longer holds a useful charge or when a lower-watt-hour unit was fitted at purchase. Buyers who need a higher voltage or a different form factor should look elsewhere, as this unit is built to the exact electrical and mechanical specification of the listed Fujitsu models.