It depends on the exact model, since the Fujitsu LifeBook P line spans more than a decade of sub-series. Late-era P770, P771, and P772 units commonly use the FPCBP325 (also seen as FPB0262, FMVNBP210, or CP704821-01), while the earlier P1610 and P1620 convertibles use the FPCBP155. All packs are lithium-ion, and replacements in our catalog run $61.99. The safest approach is to read the FPCBP number printed on your current battery and match it exactly.

Match the FPCBP part number printed on your existing pack, which is the most reliable identifier for this series. Flip your laptop over, remove the battery, and look for a code beginning with FPCBP (for example, FPCBP325 for a P771 or FPCBP155 for a P1610). You can also cross-check your full model number, such as P772 or P1620, against the listing. Because cell counts and voltages differ across sub-series, matching the exact number prevents ordering a pack that does not fit.

Replacement batteries for the Fujitsu LifeBook P line are priced at $61.99 in our catalog. Pricing can vary with cell count, since this series ranged from compact 3-cell and 4-cell packs up to 6-cell and 9-cell units. To confirm you are looking at the correct option, match the FPCBP number on your current battery, for example the FPCBP325 used by the P770, P771, and P772 models.

No, not across the full series. The Fujitsu LifeBook P line covers many years and sub-series, and the batteries differ by voltage, cell count, and physical shape. For example, the FPCBP155 used in the P1610 and P1620 convertibles will not fit a late-era P771, which uses the FPCBP325. Even models that look similar can take different packs. Always confirm the FPCBP number on your existing battery before ordering so you get a pack that physically fits and connects correctly.

The differences come down to era, form factor, and cell count. The P1000/P1600 convertible tablets used compact lithium-ion packs like the FPCBP155, the P7000 and P8000 sub-notebooks used various FPCBP packs in different cell counts, and the late-era P77x models (P770, P771, P772) used the FPCBP325. Earlier units leaned toward smaller 3-cell and 4-cell designs, while later and extended-life options reached 6-cell and 9-cell capacities that extend from the back or bottom. The FPCBP code captures these differences.

Look on the battery itself, which is the most direct source. Power down, remove the pack, and read the printed label for a code starting with FPCBP, such as FPCBP325 or FPCBP155. Some packs also list secondary numbers like FPB0262, FMVNBP210, or CP704821-01, all of which can help confirm a match. If the label is worn, cross-reference your laptop’s model number (for example, P771 or P1620) with the listing to identify the correct lithium-ion battery.

Yes, in most cases it is a straightforward swap. The LifeBook P series generally uses removable packs that release from the bottom or rear edge with a latch, so you can power down, slide the old battery out, and seat the new one. For example, the FPCBP325 on a P771 removes from the underside. There are no tools required for a standard battery swap. Just confirm the FPCBP number matches before installing so the new pack fits and locks securely.

Watch for a sharp drop in runtime, a battery that drains quickly even from a full charge, or one that will not hold a charge at all. Other signs include the laptop shutting down unexpectedly when unplugged, the charge percentage jumping erratically, or the system staying at a low percentage no matter how long it charges. If your LifeBook P (for example, a P771 running an FPCBP325) now lasts a fraction of its original runtime, a fresh lithium-ion pack at $61.99 will restore portability.