Battery Type:NiMH Voltage:2.4V Capacity:60mAh/80mAh P/N:BA150,BA151,BA152,WEST-BA151,BATAP97A Fit for: Sennheiser A200 Sennheiser HDI 302 Sennheiser HDI 380 Sennheiser HDI 490 Sennheiser HDR 22 Sennheiser HDR 30 Sennheiser HDR 4 Sennheiser HDR 40 Sennheiser HDR 45 Sennheiser HDR 54 Sennheiser HDR 6 Sennheiser IS 150 Sennheiser RS ​​2400 Sennheiser RS ​​30 Sennheiser RS ​​4 Sennheiser RS ​​40 Sennheiser RS ​​400 Sennheiser RS ​​45 …