This brand new Fujitsu LifeBook T4220 battery features lithium-ion cells.

We use the highest quality lithium-ion battery cells and components that charge faster, last longer and weigh less than cheaper, lower quality batteries. Lower quality batteries can wear out in just a few months. Our batteries can last up to 5 years.

This LifeBook T4220 battery replacement is 100% compatible with the original battery specifications and is individually tested and backed by a 1 year warranty.

You can expect about 5 hours to 5.5 hours of run time with this LifeBook T4220 battery when new, depending on your energy use.