60mAh Ni-MH BA150, BA151 Battery for Sennheiser RA-85, R150, IS 150, IS 300, Set 500, IS 380, SET- 2500, RS-4, RS-6, RS-8, RS-400, RS-60, RS-65, RS-80, RS-85, RS-2400, HDI 302, SET-50TV, A200
No Tools and no installation instructions included.