Hi Jester,

http://www.precisionaerobatics.com/p...ls.php?pid=272

This device is solid state with no moving parts to wear, vibrate and fail, it turns on and off with a magnet, takes all types of batteries and monitors battery condition as well as drawing equally from each battery. I use these in my more "precious" models. No I don't work for the company.

Cheers,

Colin