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Rectangular black lithium-ion laptop battery with connector on one side

PISKEKAT

PISKEKAT AP18C8K laptop battery 50.29Wh 4471mAh 11.25V

SKU CH-5GCJ-QXCKF

A 50.29 Wh, 11.25 V lithium-ion replacement battery for numerous Acer Aspire, Swift, Chromebook and TravelMate laptops

  • Battery TypeLaptop Batteries
  • 29Wh capacity powers extended work sessions
  • 25V Li-ion chemistry delivers stable voltage output
  • Replaces AP18C8K and 3INP5/82/70 part numbers directly
  • Compatible with Aspire 5, Aspire 7, Swift 3, Chromebook and TravelMate P2 series
  • New condition ensures full rated capacity from first charge

Replacement battery for Acer laptops

The PISKEKAT AP18C8K is a new lithium-ion battery rated at 11.25V with a capacity of 50.29Wh or 4471mAh. It replaces part numbers AP18C8K and 3INP5/82/70 across several Acer Aspire, Swift, Chromebook and TravelMate series. Buyers who need a different voltage or a higher capacity should look elsewhere.

Sustained discharge and cycle life

The cell chemistry delivers a steady 11.25V output throughout the discharge curve, supporting typical workloads without voltage sag. The supplier recommends discharging to 10-20% then charging for three to four cycles to condition the pack and ensure full capacity is recognised by the system firmware.

Thermals and power draw

Lithium-ion construction keeps internal resistance low, so the pack runs cool during normal charging and discharging. No active cooling is required and the unit adds no audible noise. Power draw matches the laptop’s original specification, so the existing AC adapter remains sufficient.

Highlights

  • 29Wh capacity powers extended work sessions
  • 25V Li-ion chemistry delivers stable voltage output
  • Replaces AP18C8K and 3INP5/82/70 part numbers directly
  • Compatible with Aspire 5, Aspire 7, Swift 3, Chromebook and TravelMate P2 series
  • New condition ensures full rated capacity from first charge

Specifications

Battery TypeLaptop Batteries

Questions about this item

How much heat or noise does the 50.29Wh Li-ion battery generate during all-day use?

The battery itself produces no noise and negligible heat; any warmth comes from the laptop's own components during charging or heavy load.

What must I already own for the AP18C8K 11.25V battery to work in my laptop?

You need a compatible Acer model such as Aspire 5 A514-54, Swift 3 SF314-57 or TravelMate P2 TMP215-52, and the original battery must show part number AP18C8K or 3INP5/82/70.

Will the 4471mAh replacement work alongside the original charger and motherboard in an older Acer Chromebook 314 314-C933?

Yes, if the original battery carries the same AP18C8K part number the replacement will charge and report capacity normally through the existing charger and motherboard.

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