Great site! My friend got me interested in droning. Last month I bought a Q 500 typhoon 4k used from a guy that just flew it a few times. I haven't flown it yet but I'm excited to fly it when the weather gets better. I was checking everything out yesterday and found out that I don't have the wall adapter that is supposed to charge the st10+ transmitter up. Is that the only way to charge it? My cell phone charger is 5 volts but I see that the st10+ is 3.7 volts.I don't want to screw it up by using the wrong charger on it. I have been watching alot of u-tube videos on the Q500 typhoon and stuff about it. Thank you for any info.