This is a brand new HP 816609-005 battery for the Chromebook 14-AK Series models. It also replaces the BU03XL and 816609-005 battery part numbers.
This HP 816609-005 notebook battery uses the highest quality Lithium-ion cells on the market from Samsung. This HP BU03XL battery is rated 11.4 volts and 3130 mAh.
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. 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.