We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Rectangular black laptop battery with connector pins

ALSEYE

ALSEYE FPB0337S 45Wh 10.8V 2 in 1 accessory

SKU CH-4EHM-478YV MPN FPB0337S

A 45 Wh, 10.8 V replacement battery compatible with Fujitsu Lifebook P727, P728, U727, U728, U729 and U729X models

  • 45 Wh capacity extends mobile runtime
  • 8 V output matches original power spec
  • Replaces FPCBP528, FPCBP530, FMVNBP245, FMVNBP246
  • Fits Fujitsu Lifebook P727, P728, U727, U728, U729, U729X
  • UL, CE, FCC, RoHS certified with protection circuits

Replacement Battery for Fujitsu Lifebook

This 45Wh 10.8V replacement battery fits Fujitsu Lifebook P727, P728, U727, U728, U729 and U729X models. It replaces part numbers FPB0337S, FPCBP528, FPCBP530, FMVNBP245, FMVNBP246 and 3INP6/60/80. Buyers who need a different voltage or capacity should verify their original battery before ordering.

Thermals and Power Characteristics

The lithium-ion pack delivers 45Wh at 10.8V with a rated 4170mAh capacity. Built-in protection circuits guard against short circuit, overheat and overload conditions. Low self-discharge helps the pack hold charge during storage. Users who require extended runtime beyond this capacity will need a higher-capacity alternative.

Conditioning and Compatibility Steps

The supplier recommends discharging the new pack to five percent, then completing three to four full charge cycles with the original charger to optimise performance. Confirm the exact model number on the existing battery before purchase. Installers who skip the connector seating check may encounter detection issues.

Highlights

  • 45 Wh capacity extends mobile runtime
  • 8 V output matches original power spec
  • Replaces FPCBP528, FPCBP530, FMVNBP245, FMVNBP246
  • Fits Fujitsu Lifebook P727, P728, U727, U728, U729, U729X
  • UL, CE, FCC, RoHS certified with protection circuits

Specifications

No published specifications for this item yet.

Questions about this item

How do I install the FPB0337S battery in my Fujitsu Lifebook U728?

Open the back cover, verify the original battery matches FPB0337S or FPCBP528, connect the battery connector firmly to the motherboard, then charge with the original charger. Discharge to 5%, then complete 3-4 full charge cycles to calibrate the new 45Wh cell.

What maintenance does the 45Wh 10.8V battery need over time?

Avoid draining to 0%; recharge at 5% or higher. Use the original Fujitsu charger only. The pack includes short-circuit, overheat and overload protections, so no user servicing is required beyond normal charge cycles.

What limits runtime first during a heavy workload on the FPB0337S?

The 45Wh capacity and 4170mAh rating set the total energy available; under sustained high draw the battery will deplete faster and trigger its built-in overload protection before overheating becomes an issue.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.