Mine crapped out today,eight years old.Had a not so great conection on ground,all I got was tic tic tic. had 11.9 volts tightened it up put it on charge and away it went.Rode home and the volt tester said 12.48,seemed strong to me.Gona keep it around a while,bought a new one today.Gona let it sit a bit and keep testing to see if it will hold it.