This is a rechargeable SharkNinja 21.6V 3750mAh XBATR640US Battery . High quality and long lifetime, this XBATR640US battery lets you work seamlessly when you are on the move for business trips or vacations. All our Li-ion replacement batteries for SharkNinja XBATR640US Vacuum Cleaner have been tested and proven to match and/or exceed original battery performance and are […]