Losi LOSB0104T2 - Manual (Page 9)

9
Installing Batteries:
Transmitter
Remove the battery cover from the bottom of the transmitter by sliding it away from the base of the handle.
Install the four (4) AA-size batteries into the base, noting polarity when inserting each battery.
Reinstall the battery cover by sliding it back on the handle base.
Transmitter with batteries installed