This HP BK03XL battery uses the highest quality lithium-ion battery cells and components that charge faster and last longer.

This HP BK03XL notebook battery is rated at 11.1 Volts and 33 Whr and will typically last 4.5 hours on a full charge.

This HP BK03XL battery carries a 1 Year warranty and is tested and inspected before it ships. We provide a 30 day money back guarantee if you are not completely satisfied. We are so confident in the quality of our batteries, we will pay for any and all shipping expenses if our product fails to perform in the first 30 days you have our battery, even if it is not our fault.

You can expect about 4.5 hours of battery life with this HP BK03XL battery when new, depending on your energy use. The higher capacity battery cells inside this cartridge have an energy capacity of 33 Watt Hours.