Sennheiser BA 2015 battery packThe Sennheiser BA 2015 rechargeable battery pack powers evolution G2, G3 and G4 bodypack transmitters portable receivers. It contains two NiMh cells and is inserted into the battery compartment instead of standard AA cells. The battery pack features an integrated sensor which indicates the battery status, monitors temperature during recharging and avoids the charging of non-rechargeable batteries.
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