Sennheiser BA 30 Rechargeable Battery Pack

The BA 30 is the rechargeable bodypack battery for evolution wireless D1, replacing loose AA cells with a single 2.03 Ah lithium-ion pack rated for a full show day. It shares the same footprint across three product lines, so it doubles as the spare for SpeechLine Digital Wireless SL Bodypack DW and AVX SK Bodypack transmitters.

Standardizing on one battery across a mixed D1, SpeechLine, and AVX inventory means fewer spare-part SKUs to stock and a shorter charging queue on a multi-transmitter show.