This Lenovo ThinkPad X240 battery features the highest quality lithium-ion cells.

This ThinkPad X240 battery is 100% compatible with the original battery specifications and is individually tested and backed by a 2 Year warranty.

You can expect about 5 - 7 hours of run time with this ThinkPad X240 battery when new, depending on your energy use. If you are looking for even longer battery run times, check out the larger capacity Lenovo 68++ battery here.