28Wh Acer AP12E3K Battery

28Wh AP12E3K Battery for Acer Aspire S7 S7-191 Series

This 28Wh Acer AP12E3K battery is designed for compatible
Acer Aspire S7 S7-191 laptops. It is a suitable choice when your current battery
drains quickly, no longer holds a charge, or your Acer Aspire S7 needs stable portable power again.

With a 7.4V output voltage, 3790mAh / 28Wh capacity, and
4-cell battery design, this battery supports everyday ultrabook use such as
work, school, browsing, email, documents, video playback, online meetings, and travel.

Product Information

Compatible Part Numbers

Please compare the part number printed on your current battery before ordering. This battery is
suitable for the following Acer battery part numbers:

• Acer AP12E3K
• Acer ACES7C
• Acer KT00403008
• Acer KT.00403.008

Compatible Laptop Model Series

This Acer AP12E3K battery is designed for the following Acer Aspire S7 model. Please check both
your laptop model and battery part number before placing your order.

• Acer Aspire S7 (S7-191)

When Should You Replace Your Acer Aspire S7 Battery?

If your Acer Aspire S7 no longer provides enough runtime for normal use, changing the battery can
help restore convenient portable performance without replacing the entire laptop.

• The battery drains much faster than before.
• The laptop shuts down unexpectedly during use.
• The battery percentage drops suddenly or behaves abnormally.
• The laptop only works when connected to the charger.
• The battery does not charge to full capacity.
• Windows or BIOS shows a battery health warning.

Why Buy This AP12E3K Battery?

• Designed for Acer Aspire S7: suitable for Acer Aspire S7 S7-191 laptops.
• 28Wh capacity: supports everyday ultrabook use, browsing, email, documents, and travel.
• 4-cell battery design: made for compatible Acer systems using the listed AP12E3K battery specifications.
• Stable power output: built for compatible laptops that use 7.4V AP12E3K batteries.
• Brand new battery: a practical option when your current battery becomes weak or unreliable.
• 12-month warranty: gives customers more confidence when ordering.
• 30-day return policy: provides extra peace of mind after purchase.

Important Compatibility Reminder

Acer Aspire S7 batteries may look similar but can have different voltage, connector position,
battery shape, capacity, or internal layout. Before ordering, please confirm that your current
battery part number matches one of the listed part numbers, such as AP12E3K,
ACES7C, KT00403008, or KT.00403.008.

You can usually find the battery part number printed on the battery label. You can also check your
laptop model number on the bottom cover, system information page, or original device label.

Installation Notes

• Turn off the laptop completely before replacing the battery.
• Disconnect the charger and any external devices.
• Use the correct tools and open the ultrabook carefully to avoid damaging the case or internal parts.
• Do not bend, puncture, disassemble, or force the battery during installation.
• Make sure the battery connector is properly aligned before closing the back cover.
• After installation, charge the battery fully before regular use.
• If you are not familiar with ultrabook repair, professional installation is recommended.

Frequently Asked Questions

Is this battery suitable for Acer AP12E3K?

Yes. This battery is suitable for Acer AP12E3K and related part numbers including ACES7C,
KT00403008, and KT.00403.008.

Does this battery fit Acer Aspire S7 S7-191?

Yes. Acer Aspire S7 S7-191 is included in the compatible model list for this battery.

What voltage is this battery?

This battery has an output voltage of 7.4V. Please compare it with the voltage printed on your
current battery before purchase.

What capacity is this battery?

The battery capacity is 3790mAh / 28Wh.

How many cells does this battery have?

This battery uses a 4-cell design.

Is this battery brand new?

Yes. This product is listed as brand new.

What should I check before buying?

Please check your Acer Aspire S7 model, current battery part number, battery voltage, and battery
shape. The safest way to confirm fit is to compare the part number on your current battery with the
part numbers listed above.