This Lenovo 5B10W13901 battery replaces the original battery found in the ThinkPad P53.

We use the highest quality lithium-ion battery cells and components that charge faster and last longer than cheaper, lower quality batteries. Li-ion battery technology provides longer run times with less weight and are not subject to the memory effect common with older battery technology.

This Lenovo 5B10W13901 battery is 100% compatible with the original battery specifications and is tested, inspected and backed by a 2 Year warranty.

You can expect about 5 - 6 hours of run time with this Lenovo 5B10W13901 battery when new, depending on your energy use.