. Use Phillips screwdriver 16 loosen the. screw from the better compartment cover and slide the cover is the dire son of the arrow to remove it. 3. Place a battery in the compartment according to the polarity symbols {+ and -) marked inside. 4. Replace the cover and secure it with the stew, When the transmitters range decreases, replace its battery In The Cor Your coe uses 4AA batteries ara ¥ rechargeable bather pack (neither supplies, available of your local Radio Shack store} for power.