You can change batteries or just get a field charger. Nothing like being able to get 8+ flights on a plane during a long day at the field.

Fwiw, we have regular overflights at our field from all kinds of aircraft, everything from Cessnas to medivac, police and military choppers to airliners in the pattern to BWI airport that look like you can touch them (they are up around 2,000, according to some pilots in the club who are familiar with the approach). The GA aircraft are supposed to say over 1,000ft, but they often are lower, and the medivac and other choppers come over lower than that, sometimes much much lower.

And I've flown at a field in VA near Dullas airport that is right under one of the approach paths, the jets coming over look HUGE, probibly only up about 1000ft there or so.

I've never heard anyone mention anything about a fullscale causing interference to one of our models. Not saying it's not possible, but it seems highly unlikely. The more obvious and more likely probelm was a battery problem. Did you put the battery on a loaded meter after the crash? Just wiggling the sticks isn't enough evidence.

Another question, when you lost contact with the model, did the throttle stay constant, or did you hear the engine chaning RPM all over the place? Unless you are flying PCM or with an RX with failsafe, interference will always show up with ALL channels at once all jumping around. Faster jitters on control surfaces might not show up as erratic flight (though they often do), but every confirmed hit I've seen has had throttle changes that could be heard from the ground. If you didn't get erratic throttle changes, it was a complete radio failure, and that means battery, switch, or something simular.