This brand new Lenovo 42T4788 battery works for the Lenovo ThinkPad X100e and X120e models. Additional compatible models are listed below.

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.

This 42T4788 battery replacement is 100% compatible with the original battery specifications and is individually tested and backed by a 2 Year warranty.

You can expect about 2 hours to 3 hours of run time with this Lenovo ThinkPad 42T4788 battery when new, depending on your energy use.