I was in the process of taking apart this helicopter and inside I found a "siren" (I looked it up) and two button batteries. Can't figure out how to remove the batteries w/o breaking the little plastic post that holds them in. Any ideas? I would like to test the siren before I discard it; I want to drill out the copter to mount a motor and rotating shaft to simulate a slow-moving set of blades.
Wally
