GPK Systems Battery Pack for Neato XV-11 XV-12 Automatic Vacuum Cleaner Floor Cleaning Robot Battery 945-0005 945-0006 Capacity: 3500mAh Voltage: 7.2V Type: NI-MH GPK Systems is a trademark of GPK Systems Inc. Sold exclusively by GPK Systems Inc. Package Included : 2 x Battery Service & Support 1 year warranty