 You can put jumper cables on there and it starts? Yeah. It's almost got to be a battery. It's got to be a battery. I'll bet you if you put a voltmeter on the battery with it connected, you're going to find that it has either nothing or a very low, maybe four or five volts. And then when you disconnect one of the terminal leads, it's going to pop up to a battery voltage. It's probably got something broken inside of it.