Shure SBC-AX SBRC Charging ModuleSBC AX charges two SB900A Rechargeable Batteries in the SBRC Shure Battery Rack Charger. Configurable bays in the SBRC allow for mixing and matching of up to four charging modules, for a total of eight batteries. SB900A batteries are compatible with P9RA, P10R, ULXD2, ULXD1, QLXD2, QLXD1, P3RA, AD2, AD1 and UR5. Features Charges to 50% capacity within 1 hour using rapid charging function Completely charges batteries within 3 hours Enables networked