[SB900A Battery]
[Single Battery Charger]
[Dual Docking Charger | PS45US Power Supply]
[SB900B Battery]
[Dual Docking Charger | NO Power Supply]
Shure SBC200 Dual Docking Charger, Recharging Station Charges SB900A Batteries in-or-out of Transmitters, Run up to 4 SBC200 Stations off 1 Power Supply (Power Supply NOT Included)