This BA 151 Accupack rechargeable battery may be used with the Sennheiser RS30, 40, 45, 65 and 85 RF Wireless Headphone and IS150, 380, SET50TV Infra-Red Headphone Systems.
Compatible with Sennheiser IS 150, IS 300, Set 810, Set 250, Set 500, IS 380, Set 820, Set 2500, RS 4, RS 6, RS...