ok I let my p3p sit in heated storage for year, Dry, in a case. I finally get it out charge the batteries, which give the four lights when the button is pressed and nothing, neither the controller of drone will start. It wasn't very old when I put it in storage, maybe 50 flights with three separate batteries that I tried to rotate. So what gives ? Not enough voltage ? I hate to spend more money on batteries just to try with out a pretty good idea that is what the problem is.