Bud
I also have a Spectrum 7, yet to fly. I read some posts on another web site about the receiver rebooting if the votage drops below 4.7v, leading to momentary loss of control and loss of airplane. Suggestion was made to use a 5 cell pack. I'm going to try to see if this is a valid issue or some more "gas". It seems bizarre to design it this way.
Ric