Associated 725 WolfPack NiMH 3600mAh 8.4V w/ High Power Connector This is the Associated Reedy Wolfpack 7-Cell 8.4V 3600mAh NiMH Battery with a Deans Female Ultra Connector included.Includes: One Associated Reedy Wolfpack 7-Cell 8.4V 3600mAh NiMH Battery with a Deans Female Ultra ConnectorRequires: NiMH capable linear charger with peak detection like the DuraTrax Onyx series chargers