CORE GasLess Power CDU400 Power Lok Drive Unit for Lawn and Garden Tools Includes drive unit a standard 3 hour charger and one power cell Includes an Intelligent electronic controller that recognizes which attachment has been connected; All attachments are sold separately Reduces operating costs and is virtually maintenance 4 pounds without power cell, 7 pounds with power cell This drive unit connects with the CORE Power Lok trimmer, hedge trimmer and blower attachments; Attachments sold separately