Revive your worn-out battery with a new Acer S7-391 battery. This 7.4 Volt, 4680 mAh battery is also compatible with the Acer AP12F3J battery part numbers and the Acer Aspire UltraBook S7-391, S7-391 9427 and S7-391 6818. It is also compatible with the Aspire S7-191 models.

We use the highest quality lithium-ion battery cells and components that charge faster and last longer than cheaper, lower quality batteries. Li-ion batteries are not subject to the memory effect common with older battery technology. This means you can recharge your laptop any time without diminishing your battery capacity.

This Acer S7-391 Ultrabook battery is typically superior to the original Acer battery and is 100% compatible with your Acer laptop. Each battery is individually tested before shipment and backed by 30 day complete satisfaction guarantee and a 2 Year warranty.

You can expect about 2 - 3 hours of run time with this Acer S7 391 battery when new. Even longer run time can be achieved by minimizing your screen brightness and energy use. The higher capacity battery cells inside this cartridge have an energy capacity of 4680mAh.