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Black rectangular lithium-polymer laptop battery with short cable

NShi

NShi AP13J4K 11.4V 45Wh 3920mAh laptop battery

SKU CH-YHSN-KAAGM MPN AP13J4K

Replacement lithium-polymer battery for Acer Chromebook 11.6" C720, C720P and C740 series with 11.4V, 45Wh capacity and 4cm cord

  • Battery typeLithium Polymer
  • Replaces Acer Chromebook C720 and C740 series batteries
  • 4V 45Wh capacity restores original runtime
  • Lithium polymer cell technology for stable power delivery
  • 4cm cable length matches specific model requirements
  • Compatible with AP13J4K AP13J3K KT.00304.001 part numbers

Compatible replacement for Acer Chromebook 11 C720

This 11.4 V lithium-polymer battery delivers 45 Wh and 3920 mAh for Acer Chromebook 11.6 inch models including C720, C720P and C740 series. It replaces part numbers AP13J4K, AP13J3K, KT.00304.001, KT.00303.001 and KT.00303.011. The unit is brand new and ready for installation.

Cord length and manual guide correct fit

The package includes one battery and an instruction manual. The cable measures 4 cm, which differs from 2.5 cm and 6 cm variants used on some sub-models. Buyers must open the laptop and compare the connector position and cable length with the product image before ordering to avoid mismatches.

Simple swap if connector matches

Installation requires removing the bottom case, disconnecting the old pack and connecting the new one using the same connector. The main failure point is ordering the wrong cable length; a 4 cm cord will not reach on units designed for 2.5 cm or 6 cm leads. Discharge to 5 percent on first use, then charge fully to calibrate.

How it compares

Measured against everything we stock in Laptop Chargers & Batteries, at today’s prices. Recalculated every night.

Price $46.99
Pricier than about 79% of the 27,790 comparable items (median $30.99).

Specifications

Power
Battery typeLithium Polymer

Questions about this item

How long will the 3920 mAh lithium-polymer pack last before it needs replacing?

Battery lifespan depends on usage patterns and charge habits; the manufacturer recommends an initial discharge to 5 % then a full charge to help calibrate the cells.

What is the first limit reached during continuous use — battery runtime or thermal throttling?

The 45 Wh capacity determines how long the Chromebook runs on a single charge; no thermal or power-throttling specifications are provided for the pack itself.

Does the battery get hot or draw extra power when the laptop runs all day?

The pack operates at 11.4 V and is a passive component; it generates no noise and any warmth comes from the notebook's own power management, not the battery alone.

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