today while driving my car started losing power I shut off the car died I got it jumped drove over to my bosses house and I'd started sputtering really bad I found a piece of metal holding two negative wires together that was touching the positive terminal I took that off taped up the wire got it started let it run 30 minutes It was fine but on way home as I almost got home It started losing electrical power again. It is in driveway car is dead the battery is hot on Wednesday I had the battery and alternator checked and it said it was good could the piece of metal that touch the positive terminal messed thebattery up and I need a new one or is there another gremlin