I own a 436 and I would like to ask, what is the maximum Volts, Wattage, Amps can a individual use on recharging the time and date, of the A/C wall plug if used. Maybe the unit only takes what it needs then it stops charging? I really don't want to fry the radio up, and I don't want to keep my computer on for 50 hours, so does anybody have advice on what can be used and not be used? Appreciate the help.