I am certainly supplying all the 4 panels with a dedicated 2s lipo pack which will probably need regulating but need to check this through first, units seem to run from 3.5v (Tor can you confirm the voltage?)
The impulse switch is the only function other than swithing on power that needs to be done to run the screens, my electrical guru Rich is looking to add a small circuit to do this automatically when the power is turned on - that way one power switch fires up all units...

marcs