If no rechargeable batteries have been inserted:

   Unscrew the cap of the battery compartment.

   Insert the rechargeable batteries (3x, type AA) into the battery compartment with the plus pole at the top.

Use only high-quality rechargeable batteries with a capacity of at least 2500 mAh.

Do not insert rechargeable batteries together with single-use batteries. Single-use batteries could otherwise leak and damage the transmitter.

Do not insert batteries with different capacities. This would damage them.

Do not insert any disposable batteries if the transmitter is to be charged on the charging cradle. If disposable batteries are loaded, they can become hot and release toxic substances and also damage the transmitter.

   Screw the cap of the battery compartment closed.