Arclyte Technologies 22.2V Replacement Battery for Dyson DC31, DC35, 917083-01 Handheld Vacuum Cleaner Battery for Dyson DC31, DC35 Type A NOT compatible with Type B, Type i. If Battery is Removeable by Depressing a Button Without Tools, This is the Correct Battery Specifications: Li-Ion 22.2V, 2000mAh, 44.4 Watts 100% Satisfaction Guaranteed