ASUNCELL AP13J4K 3720mAh Battery for Acer C720/C740 - Reliable

Our review of the ASUNCELL AP13J4K battery looks at whether this 11.4V, 3720mAh replacement is a practical fix for worn Chromebook batteries. For owners of Acer 11.6in C720, C720P and C740 models who need a direct-fit, affordable battery, the main reason to buy is straightforward: it restores usable runtime with a simple swap and includes basic tools for installation. This review focuses on real-world fit, build quality and what to expect from charge retention over typical use.

Key Features

• Compatible Fit: Designed specifically for Acer C720, C720P and C740 series, the battery fits the original compartment without modification.
• Battery Chemistry: Uses Li-ion cells which provide a consistent discharge profile suitable for Chromebook workloads like web browsing and document editing.
• Capacity: The 3720mAh capacity restores several hours of light to moderate use for older Chromebooks compared with drained OEM packs.
• Voltage and Cells: The 11.4V, 4-cell configuration matches the original specifications so the system reports battery health correctly after installation.
• Included Tools: Customers report the package arrives with a small tool kit, which makes the replacement process easier for users who do not have electronics tools on hand.
• Recharge Longevity: Rated for up to 500 recharge cycles, providing reasonable service life if used and charged responsibly.

Who It's For

This battery is best for owners of Acer 11.6in Chromebooks in the C720, C720P and C740 families who need an inexpensive, direct-replacement battery and want a straightforward installation. It is a solid option for students, remote workers or anyone extending the life of a Chromebook without replacing the whole device.

It is less suitable for buyers who expect OEM-level guaranteed capacity or for machines outside the listed model series. Users who need top-tier charge retention under heavy continuous workloads should consider professional servicing or OEM options.

Pros & Cons

Pros

• Good fit for supported Acer models, eliminating fitment headaches during replacement.
• Reasonable capacity at 3720mAh that restores usable runtime for light tasks.
• Includes tools and is simple to install for users comfortable opening the laptop.
• Li-ion chemistry and 4-cell construction match original specifications for stable performance.

Cons

• Some users report mixed charge retention, with occasional units not charging beyond roughly 65% in real use.
• Capacity may not match factory-new OEM performance for sustained heavy use.

Specifications

Brand	ASUNCELL
Model	AP13J4K
Voltage	11.4V
Capacity	3720mAh
Cells	4-cell Li-ion
Compatible Models	Acer C720, C720P, C740 series
Cycle Life	Up to 500 recharge cycles

Our Verdict

The ASUNCELL AP13J4K is a cost-effective replacement that restores practical runtime to supported Acer Chromebooks and is easy to install with the included tools. It represents good value for users needing to extend device life, though buyers should expect some variation in charge retention compared with factory-new batteries.

Frequently Asked Questions

Will this battery fit my C720 laptop?
Yes, it is made for Acer C720, C720P and C740 series and fits the original battery compartment.

How long will the battery last before replacement?
ASUNCELL rates the pack for up to 500 recharge cycles, which under normal use typically gives months to years of service depending on charge habits.

Does it come with installation tools?
Yes, customers report the package includes a small tool kit to make installation straightforward.