Overmax X-Rally 2.0 Manuel De L'utilisateur page 14

HOW TO ASSEMBLE BATTERY IN
THE CONTROLLER
EN
1. Loosen the screw of the battery cover with a screwdriver.
Remove battery cover.
2. Insert two batteries AA 1,5 V. Pay special attention to battery
terminals.
3. Put the cover back on. Tighten the screw with a screwdriver.