This HP CA09 long run battery is compatible with the HP ProBook 640, 645, 650, 640 G1, 655 G1, 640 G1 replacement battery. This is a larger battery Pack and it will protrude to the rear of the laptop about 1 inch.

We use the highest quality lithium-ion battery cells that charge faster and last longer than cheaper, lower quality batteries. Laptop Battery Express is a US based business with knowledgeable support staff to assist you before and after the sale.

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 3 hours of run time with this computer battery when new, depending on your energy use.

This battery replaces the Hewlett Packard ProBook 640, 645, 650, 655, 650 G0, 655 G0, 640 G1 Series laptop battery. This battery also replaces the EliteBook Revolve 810.