Installing the Batteries Batteries should only be installed by an adult. © The battery compartment is on the opposite side of the Microphone as the Transmit Switch. Find the screw, located near the base, then use a Philips screwdriver to open the compartment © Insert 2 “AA” {R3) batteries info the Microphone, with the flat, “negative” ends facing the speaker. © Replace the compartment and tighten the screw. Far the Best Possible Performance: «We cameramen using alkaline batteries.