Amazon.com: Sennheiser BA 151 Rechargeable Battery for IR and RF Wireless Headsets : Electronics
Amazon.com: Synergy Digital Wireless Headset Battery, Compatible with Sennheiser RS 6 Wireless Headset, (Ni-MH, 2.4, 60mAh) Ultra High Capacity, Replacement for Sennheiser BA150, BA151, BA152, WEST-BA151 Battery : Electronics
Amazon.com: Sennheiser BA 10 Rechargeable Battery Pack for EW SKM D1 Handheld Transmitter : Musical Instruments
MPF Products BA 150, BA 151, BA 152 Rechargeable Battery Replacement Compatible with Sennheiser IR and RF Wireless Headsets (Compatible Models Listed in Description Below)
Amazon.com: Sennheiser BA 151 Rechargeable Battery for IR and RF Wireless Headsets : Electronics