This HP ProBook 640 battery also replaces the original battery in the HP ProBook 645, 650, 640 G1, 655 G1, 640 G1 models. Additional compatible models and battery part numbers are listed below. Don't see yours? Go to our HP laptop battery and charger page for the full list.

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

All our products carry a full 2 Year warranty and every battery is charged and tested before it ships. We provide a 30 day money back guarantee if you are not completely satisfied.

Check your current battery to ensure you are ordering the correct battery. It should match the picture above. This battery will provide about 2 hours to 2.5 hours of run time with this HP ProBook 640 battery when new, depending on your energy use.

If you want even longer run time, check out our 9 cell battery which provides an extra 1- 2 hours of run time for a total of about 3-4 hours of battery run time.