I do fly one small electric Extra and have had a couple others but I know almost less then zero about electric power. Whenever I have any questions about it I go to the bottom of the header bar and go over to the wattflyer forum. Not only do they know about every type of plane and power system but watts and volts is all they speak. You can get most of your information just from there stickys they have posted. Also some of the nicest people you will ever want to meet. It's the perfect forum for all things electric. Go sign up and take a look, I think you will really like it!!