very annoying and problem still not resolved. battery discharges and am advised need a new radio $1200) since radio connects to battery and causes discharge and dead battery. battery is new

After returning to the airport after a 3 day trip, battery dead. Not possible to leave any device on that would discharge the battery. Very perplexing. Dealership repair said there was a "loose connection" that would set off the alarm system, thereby discharging the battery. There had been a wiring issue as the root cause that had been there since new purchase.