Upstart Battery 2 Pack Replacement for Sennheiser BA150 Battery - Compatible with Sennheiser BA151 Headset Battery (60mAh 2.4V NI-MH)
TWO Ni-Mh Battery Replacement for Sennheiser BA150 BA151 A200 RS60 Set 50 TV 887774195800 | eBay
Sennheiser BA 151 - - Rechargeable accupack
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
Batterie Sennheiser BA 151 pour SET 820 et AudioPort A200 | AUDIKA
Battery BA151 | Caltric
BA150 BA151 BA 150 BA 151 BA 152 Battery Replacement for Sennheiser Headphones 881314436941 | eBay
Sennheiser BA 151 Rechargeable Nickel-Metal Hydride (NiMh) (004146)
Amazon.com: Sennheiser BA 151 Rechargeable Battery for IR and RF Wireless Headsets : Electronics