TREE.NB AC14B8K Battery for Acer CB3-111 V3-371 E3-111

TREE.NB AC14B8K is a direct-replacement 15.2V, 48Wh 4-cell laptop battery designed to restore reliable runtime for many Acer Chromebook and Aspire models.

When your Acer laptop shows short run times, unexpected shutdowns, or won't hold charge, a high-quality replacement battery like the TREE.NB AC14B8K provides a plug-and-play swap to bring portable productivity back. This battery is manufactured to OEM-fit dimensions, uses grade A cells, and includes protective circuitry to help maintain stable performance across hundreds of charge cycles.

Which Acer models and part numbers does this battery support?

This TREE.NB battery is compatible with a broad range of Acer Chromebooks and notebooks. It matches several Acer part numbers and model families, making it suitable for users who need a like-for-like replacement.

• Compatible part numbers: AC14B8K, KT.0040G.004, KT0030G.004, 3ICP5/57/80.
• Works with Chromebook and Aspire series including CB3-111, CB5-571, CB3-531, V3-371, E3-111, ES1 series, R3/R5/R7 series.
• Also fits select Gateway, Packard Bell and TravelMate models listed in the official compatibility references.

How long will the TREE.NB AC14B8K last and what are its technical specs?

The battery is built with a 48Wh capacity and a nominal voltage of 15.2V, comprised of four cells. With proper charging habits it achieves up to about 500 recharge cycles according to typical lithium-ion cell life expectations.

• Voltage: 15.2V — compatible with systems requiring AC14B8K specification.
• Capacity: 48Wh — restores multi-hour runtime depending on laptop workload.
• Cells: 4-cell construction with built-in circuit protection for stable output.
• Cycle life: Designed for up to roughly 500 recharge cycles under normal use.

What safety and quality checks does this replacement battery include?

TREE.NB units are manufactured new and undergo factory testing to ensure reliability and safety. The battery uses Grade A cells and integrated protection to reduce risks associated with overcharge, over-discharge, and short circuits.

• 100% new from factory with inspection and electrical testing before shipment.
• Grade A cells deliver consistent charge/discharge performance and lower self-discharge.
• Built-in protection circuitry helps prevent thermal, overcurrent, and overvoltage conditions.
• Meets fit and connector specifications for listed Acer models for a safe, secure installation.

How easy is installation and what support is available if I have issues?

Installation is straightforward for most users familiar with laptop battery swaps — remove the bottom cover, unplug the old pack, and plug in the replacement. TREE.NB backs the product with customer support if you encounter fitment or performance questions.

• Plug-and-play design matches OEM connector and mounting points for listed models.
• Simple screwdriver required; follow manufacturer or service guides when available.
• 24/7 email support via the seller store for troubleshooting and compatibility help.
• If unsure, contact support before installation to confirm model fit and part number alignment.

Who is this for: The TREE.NB AC14B8K replacement battery is intended for Acer Chromebook and notebook owners whose original battery has diminished capacity, fails to charge, or causes unreliable shutdowns. It suits DIY upgraders, technicians replacing multiple units, and anyone seeking an OEM-fit, tested battery solution for the specific Acer model numbers listed. If your device matches the compatible models or part numbers and you need to restore portable runtime without replacing the laptop, this battery is a practical choice.