2x Pack - Sennheiser SET250 Battery - Replacement for Sennheiser BA151 Headset Battery (60mAh, 2.4V, NI-MH) Replacement Battery for Sennheiser A200, BA150, BA151, BA152, HDI302, HDI 302, IS150, IS300, IS380, IS 150, IS 300, IS 380, R150, RA-85, RI150, RI250, RI250-J, RI250J, RI250S, RS4, RS6, RS8, RS40, RS45, RS60, RS65, RS80, RS85, RS-4, RS-6, RS-8, RS-30, RS-40, RS-45, RS-60, RS-65, RS-80, RS-85, RS-400, RS-2400, SET250, SET250J, SET810, SET810S, SET820, SET820S, Set 500, SET- 20, SET- 250, SET- 250J, SET- 810, SET- 810S, SET- 820S, SET- 2500 Battery Capacity: 60mAh, Voltage: 2.4, Type: Nickel-Metal Hydride Quantity: 2, Lifetime Warranty On Sale for a Limited Time! Grade A Quality. High Capacity.