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Black rectangular lithium-polymer laptop battery with connector pins

NShi

NShi AP18C4K 48Wh 4200mAh 11.4V laptop battery

SKU CH-P04K-DY6NX MPN AP18C4K

Replacement lithium-ion battery rated 48Wh, 4200mAh at 11.4V for Acer Aspire 5 and Spin 3 models

  • Battery TypeLithium Polymer
  • 48Wh capacity powers Acer Aspire 5 and Spin 3 models
  • 4V 4200mAh three-cell lithium-ion matches original AP18C4K specifications
  • CE UL FCC RoHS certified with built-in circuit protection for safe operation
  • Rated for over 500 recharge cycles across the battery lifespan
  • Replaces part numbers AP18C4K and KT.00304.012 for direct compatibility

Direct replacement for Acer Aspire 5 and Spin 3

This lithium-ion battery matches the AP18C4K part number and fits the listed Acer Aspire 5 A515-43, A515-44 and Spin 3 SP314-54N models. It delivers 11.4 V and 48 Wh capacity from three cells. Buyers needing a different voltage or form factor should verify their original battery before ordering.

Steady output through a full workday

The 4200 mAh rating supports extended use without the voltage sag seen in worn cells. Built-in circuit protection guards against overcharge, over-discharge and short circuits during continuous operation. The pack is rated for more than 500 recharge cycles over its service life.

Cool, quiet operation with certified safety

CE, UL, FCC and RoHS certifications confirm compliance with electrical and environmental standards. No moving parts mean silent running and no additional heat beyond normal cell warmth. Using the original charger maintains stable thermals and protects the battery management system.

Highlights

  • 48Wh capacity powers Acer Aspire 5 and Spin 3 models
  • 4V 4200mAh three-cell lithium-ion matches original AP18C4K specifications
  • CE UL FCC RoHS certified with built-in circuit protection for safe operation
  • Rated for over 500 recharge cycles across the battery lifespan
  • Replaces part numbers AP18C4K and KT.00304.012 for direct compatibility

Specifications

Battery TypeLithium Polymer

Questions about this item

Does the AP18C4K 11.4 V 48 Wh battery generate noticeable heat or noise during all-day use?

Lithium-polymer cells produce no audible noise; normal warmth under load is expected and the built-in protection circuit keeps temperatures within safe limits.

What must I already own to install this AP18C4K replacement battery?

A compatible Acer Aspire 5 or Spin 3 chassis, a small Phillips screwdriver for the back cover, and the original 11.4 V charger for proper charging.

Will this 3-cell 4200 mAh pack work alongside the original motherboard and charging circuit in my A515-43?

Yes — it matches the factory 11.4 V specification and connector, so the existing charge controller and firmware recognise it without modification.

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