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Rectangular black lithium polymer laptop battery, new condition

NShi

NShi AP18C8K 50.29Wh 4471mAh 11.25V laptop battery

SKU CH-3P3V-J0XH7 MPN AP18C8K

Replacement lithium-polymer battery delivering 50.29 Wh at 11.25 V for compatible Acer Swift 3, Aspire and Chromebook models

  • Battery TypeLithium Polymer
  • 29Wh capacity powers your laptop through long sessions
  • 25V lithium-ion chemistry delivers stable voltage output
  • Built-in circuit protection prevents overcharge and short circuits
  • Certified to CE UL FCC and RoHS safety standards
  • Compatible with Acer Swift 3 Aspire 5 Aspire 7 TravelMate and Chromebook models

Direct replacement for Acer Swift 3 and Aspire 5

The NShi AP18C8K is a lithium-polymer battery rated at 11.25V and 50.29Wh with a capacity of 4471mAh. It replaces part numbers AP18C8K and 3INP5/82/70 across multiple Acer Swift 3 SF314 and Aspire 5 A514 series laptops. The unit is supplied new and carries CE, UL, FCC and RoHS safety certifications. It is designed for owners who need a direct swap for a worn original pack.

Certified safety with over 500 recharge cycles

Built-in circuit protection guards against overcharge, over-discharge and short circuits during normal operation. The manufacturer rates the cell for more than 500 recharge cycles over its service life. No active cooling or fan is required; the pack runs passively within the laptop chassis. Use the original charger to maintain stable voltage and thermal behaviour.

Fits existing battery bay without modification

Installation uses the stock connector and mounting points; open the back cover and ensure the interface seats firmly on the motherboard. The black housing matches the original form factor, freeing no extra space but also demanding no case changes. Buyers with models outside the listed Swift 3, Aspire 5, Aspire 7, TravelMate P2 or Chromebook 15 and 314 series cannot use this pack.

Highlights

  • 29Wh capacity powers your laptop through long sessions
  • 25V lithium-ion chemistry delivers stable voltage output
  • Built-in circuit protection prevents overcharge and short circuits
  • Certified to CE UL FCC and RoHS safety standards
  • Compatible with Acer Swift 3 Aspire 5 Aspire 7 TravelMate and Chromebook models

Specifications

Battery TypeLithium Polymer

Questions about this item

How do I install the AP18C8K battery in my Acer Swift 3 SF314-57, and which step is often missed?

Remove the bottom cover, disconnect the old battery connector, fit the new pack, and press the connector firmly until it clicks; the step most people skip is verifying the connector is fully seated before reassembling the chassis.

What replacement will the AP18C8K need after extended use?

The lithium-ion pack is rated for more than 500 recharge cycles; once capacity drops below useful levels you simply replace the battery with another AP18C8K or compatible 3INP5/82/70 unit.

What is the first limit I will hit when running the AP18C8K continuously on my Acer Aspire 5 A514-54?

The 50.29 Wh capacity at 11.25 V defines the runtime ceiling; under sustained load the battery will deplete to its low-voltage cutoff before any thermal or cycle limit is reached.

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