This is a brand new Acer Aspire E5-574 battery. This Acer E5-574 battery is rated 14.8 volts and 37 Whr and will normally last 5-8 hours on a full charge.

All our products carry a full 2 Year warranty and every battery is charged and tested before it ships. We provide a 30 day money back guarantee if you are not completely satisfied.

You can expect about 5-8 hours of run time with this Acer Aspire E5-574 battery when new, depending on your energy use and the size of your display screen. If your display size is 13 inches you will be closer to 8 hours of run time. If your screen is larger you will be closer to 5 hours. The energy to light up the display is the main drain on any laptop battery. The higher capacity battery cells inside this cartridge have an energy capacity of 49 Whr.