Sennheiser evolution wireless G4 300 Series - Battery Status

Installing the SK 300 G4
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Inserting and removing the batteries/rechargeable
batteries
You can operate the bodypack transmitter either with batteries (AA, 1.5 V)
or with the rechargeable Sennheiser BA 2015 battery.
▷ Press the two catches and open the battery compartment cover.
▷ Insert the batteries or the rechargeable battery as shown below. Please
observe correct polarity when inserting the batteries.
►
▷ Close the battery compartment.
The cover locks into place with an audible click.