This Lenovo 57Y4558 battery is rated 11.1 volts and 5200 mAh. It will typically last 3 hours on a full charge. You can get longer battery life by dimming your screen and closing unused programs.

This 57Y4558 battery is compatible with the ThinkPad Edge e10, X100e and X120e models. This 57Y4558 battery replacement is 100% compatible with the original battery specifications and is individually tested and backed by a 2 Year warranty.

We use the highest quality lithium-ion battery cells and components that charge faster, last longer and weigh less than cheaper, lower quality batteries. Low quality batteries can wear out in as little as six months. Our batteries on average last 3-5 years.

You can expect about 2 hours to 3 hours of run time with this Lenovo 57Y4558 battery when new, depending on your energy use.