Amazon.com: LIFH Replacement Battery for Sennheiser Set 250, Set 2500, Set 250S, Set 500, Set 50TV, Set 810, Set 810S, Set 820, Set 820s fits Sennheiser BA150, BA151, BA152, WEST-BA151(Ni-MH 60mAh /
Sennheiser Battery BA151 | Canadian Hearing Services
Sennheiser BA 151 rechargeable battery brand new NIMH accupack | eBay
Amazon.com: Replacement for Sennheiser BA151 Battery - Fully Compatible with RI 250, Set 250, A200, Audioport A200 Set, BA150, BA152, HDI302 - (60mAh Ni-MH) : Electronics