I still have a Volt Watch on one plane and use a 6 volt, if I start moving my controls I can get the LEDS to bottom out. No binding but I'm using 5 digital servos on the control surfaces so in a snap roll it is sucking a lot of juice. My Volt Watch is one of the first type that came out 15 or 20 years ago, not the new VW II. I still have a couple of them. I used to take them apart and put the lights behind the instruments in the cockpit. That worked out way cool in scale planes.