SBC-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.