Inserting and removing the batteries/rechargeable batteries

You can operate the handheld transmitter either with batteries (AA, 1.5 V) or with the rechargeable Sennheiser BA 70 battery.

  1. Unscrew the microphone housing as shown in the figure and pull it down as far as it will go.
  2. Insert the batteries or the BA 70 rechargeable battery as indicated in the battery compartment. Observe correct polarity.
  3. Screw the microphone housing back on.
Note about the BA 70 rechargeable battery
  • Make sure that the BA 70 rechargeable battery is inserted as follows: