This BA 20 rechargeable battery powers the Sennheiser AVX EKP wireless receiver found in the Sennheiser AVX Digital Wireless Lavalier Pro Set and Sennheiser AVX Digital Wireless Handheld Set. This lithium-ion battery will power the receiver for 4 hours of continuous operation. We don’t include a charger with this rental, but the battery can be charged via its USB 2.0 micro port.
If you need a spare battery for the AVX bodypack transmitter, you’ll want a Sennheiser BA 30 battery.
If you need a spare battery for the AVX-835 handheld microphone transmitter, you’ll want a Sennheiser BA 10 battery.