I had a problem with the same unit but it would take a 9v battery from fully charged to dead in about 1-1/2 minutes. He gave me such a run around about returning them that I cut off the control unitand wired the lights into a RC switch and then into the gear channel so I can turn them all on or off in flight. I won't buy from Ram again. Just my 2 cents. Sorry I was not of any help.