V7 - Notebook battery - 1 x lithium ion 6-cell 4500 mAh - for HP 550, 6720s, 6730s, 6735s, 6820s, 6830s

This new Li-Ion laptop replacement battery from V7 is 100% compatible with your BUSINESS NOTEBOOK 515, 550, 610, 6530S, 6531S, 6720S, 6730S, 6735S, 6780S, 6820S, DC7700 laptop and is rated at 11.1V, 4400mAh. V7 laptop batteries meet or exceed the original HP laptop battery specifications because they are manufactured for high performance in ISO 9000 factories using the best quality cells and most up to date safety and engineering control standards.