I had a dead battery, charged it up, started the bike, and disconnected on terminal to see if the alternator would keep it running to see if the alternator was bad like you would with a car. It died once I disconnected the battery. I started going through the electrical to see if there were any glaring problems and the fuse connection needed a good cleaning. now with a fully charged battery it is putting out about 14.7 volts at around 2500rpms. But it still dies if I disconnect the battery.