Get longer battery life and improved performance with a new Lenovo 45N1779 battery. This Lenovo 45N1779 battery is compatible with the ThinkPad T440P, T540P, L540, L540P and W540 models.

This Lenovo FRU/ASM 45N1779 battery features the highest quality lithium-ion cells and components that charge faster and last longer. This Lenovo 45N1779 battery is rated 10.8 volts and 57 Whr and will normally last 3 hours on a full charge. You can get longer run time if you dim your laptop screen brightness and close unused programs.

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 45N1779 battery is 100% compatible with the original Lenovo battery specifications and is individually tested and backed by a 2 Year warranty.

You can expect about 2 - 3 hours of run time with this computer battery when new, depending on your energy use. If you are looking for even longer battery run times, check out our extended run battery for your Lenovo laptop (our Long Life Lenovo W540 battery.