Even with a battery tender hooked to the battery . Battery tender says battery is fully charged . When I get in the car all the lights are on like they are supposed to be but when I turn the key the battery dies . Took the battery out to have it checked today , they said it was good . When I went to put the battery back in I noticed that the screw on the positive side wouldn't tighten and would just keep spinning . Went to Walmart and grabbed a new one . Everything is tight now . Been out to the garage twice since replacing the screw and the car has been starting right up . I also put another battery tender on from my other car just incase the other one is bad . Will try to start Tommorow and see what happens . Any ideas what it could be if this doesn't start the problem ?