28Wh Acer AP12E3K Battery

Name: 28Wh Acer AP12E3K Battery
SKU: Battery-US-Acer-AP12E3K-28Wh
Availability: InStock

$62.00

Free Shipping | Installation tools included

Reliable battery for work, study, or travel.

Built-in protection: overcharge, over-discharge, short circuit, overcurrent & temperature safety.

Important Shipping Notice (Chinese New Year 2026 - Batteries)
During the Chinese New Year 2026 holiday period, laptop battery orders may take longer than usual to deliver. This delay is mainly caused by battery sourcing (most laptop batteries are manufactured in China) and holiday logistics congestion.

Estimated Battery Delivery Time
Please allow up to 30 days for delivery during this period.

If You Need a Battery ASAP
We completely understand that a working laptop is time-sensitive. If you need a battery urgently, please order with caution. For the fastest solution, you may prefer a local seller or another supplier that is not impacted during the holiday season. While we are sorry we may not be the quickest option for urgent cases, we will be genuinely happy if you can get your problem solved sooner.

If You are Not in a Hurry
If you can wait, you can place your order with confidence. It is very common to keep using a laptop with reduced battery runtime by plugging it in when needed. We will ship as soon as sourcing and logistics allow, keep your order moving, and deliver a high-quality, reliable battery that fits your device properly.

Thank you for your understanding and support.

SKU: Battery-US-Acer-AP12E3K-28Wh Category: Battery for Acer Tag: Acer AP12E3K Dattery

Description
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Description

Product Information

Item Condition: Brand New
Color: Black
Capacity: 3790 mAh / 28 Wh
Output Voltage (Volts): 7.4 Volt
Number of Cells: 4 Cells
Package Included: 1 x Battery for Acer
Warranty: 12 Months / 30-Day Return

Compatible Part Numbers (not all):

Acer AP12E3K,Acer ACES7C,Acer KT00403008,Acer KT.00403.008,

Compatible Laptop Models Series (not all):

Acer Aspire S7 (S7-191)

Ultra-Slim AP12E3K Battery Replacement for Acer Aspire S7-191 (11.6″)

The Acer Aspire S7-191 is a marvel of 11-inch engineering. To maintain its record-breaking thinness and high-resolution performance, you need a power source that meets its exact specifications. Our AP12E3K replacement battery is designed to restore the elite mobility and reliability your flagship S7 deserves.

Product Highlights:

Perfect OEM Integration: Specifically engineered for the 11.6-inch Acer Aspire S7-191 series, ensuring a 100% fit within the tight internal chassis.
High-Density 4-Cell Output: Provides 28Wh (3790mAh) of stable 7.4V power, optimized for the unique power rail of Acer’s smallest premium Ultrabook.
Grade-A Lithium Polymer Cells: Premium cells with zero-cycle performance ensure a longer lifespan and safe charging, even in high-temperature environments.
Total Safety Suite: Built-in smart chip guards against overcharging, short-circuiting, and voltage surges to protect your high-end hardware.

Technical Specifications:

Model Number	AP12E3K / ACES7C
Voltage	7.4V
Capacity	28Wh / 3790mAh
Cell Type	4-Cell Li-Polymer
Warranty	12-Month Coverage

Compatibility Guide:

Fits the following Acer S7 11.6″ Models:

Acer Aspire S7-191, S7-191-6400, S7-191-6447, S7-191-6640, S7-191-6859

Replacement Part Numbers: AP12E3K, ACES7C, KT.00403.008, KT00403008

Expert Tech Tip: The Acer S7-191 is highly sensitive to voltage variations due to its compact motherboard design. Using a certified AP12E3K replacement with 7.4V output prevents phantom shutdowns and ensures the touch-screen remains responsive even at low battery percentages.

Frequently Asked Questions

Q: My S7-191 won’t turn on unless the power cord is attached. Is the battery dead?

A: Most likely. If the laptop works fine while plugged in but dies immediately upon unplugging, your AP12E3K battery has likely failed. A new 3790mAh replacement will restore its ultra-portable functionality.

Q: How difficult is it to replace the battery in the 11-inch Aspire S7?

A: It is an internal battery requiring the removal of the bottom case. We recommend using a precision screwdriver set. Once installed, our 12-month warranty provides peace of mind for your device’s safety.

Q: Is this battery safe for my high-resolution touch screen model?

A: Absolutely. Our battery is built with high-quality 4-cell architecture specifically to handle the steady power draw required by the S7-191’s premium display and CPU.