Okay no help from tech support, major language barrier.I need to know if my Magellan DC power adapter pushing 12.4 volts out to the 3.7 volt battery fried my first EXPLORIST 500 unit. The AC charger is 5 volts which seems fine. Will a 1 amp inline fuse solve this problem ? This is a new Magellan Explorist 500 and the same Magellan DC charger for the unit that I think may have fried the last one. The only thing they could tell me is that it draws less than 1 AMP and no specs anywhere for the DC CHARGER .Radioshack said that 12 volts would ruin the unit but they did not sell the unit to me.No fuse or voltage regulator apparent on the DC CHARGER and it is Magellan.