Sennheiser BA300 Lithium Rechargeable Battery
Lithium polymer rechargeable battery for Set 900, RI 900, Set 830-TV, RI 830, Set 830 S, RI 830 S, IS 410, RI 410, RS 4200, RR 4200
Lithium polymer rechargeable battery for Set 900, RI 900, Set 830-TV, RI 830, Set 830 S, RI 830 S, IS 410, RI 410, RS 4200, RR 4200