I keep my planes stored in cold locations (basement/garage) during the winters all the time. I've never once seen any rust or any signs of moisture damage to any of the electrics either. The only thing is I pull out the receiver pack because cold weather obviously decrease the life of batteries. Also some of my expensive Transmitters I do keep in a moderately warm environment because I wouldn't want to risk any possible moisture damage. So I guess from my experience I've only protected the batteries and Transmitters from the cold. Everything else has always been fine.