The BA 30 from Sennheiser is a rechargeable battery pack for the evolution wireless SK D1 or AVX Bodypack Transmitter (sold separately). It can be used to replace the two AA size batteries that power the transmitter-unit. The BA 30 uses a lithium-ion 3.7V rechargeable battery.

Battery TypeLithium-Ion

Output Voltage3.7 V

DimensionsNot specified by manufacturer

WeightNot specified by manufacturer

Packaging Info

Package Weight0.185 lb

Box Dimensions (LxWxH)4.05 x 3.55 x 1.25"

• For SK D1 or AVX Bodypack Transmitter
• Replaces Two AA Batteries
• Lithium-Ion Rechargeable Battery

• Sennheiser BA 30 Rechargeable Battery Pack