I have fried a few using battery chargers, and even trickle chargers, by leaving them hooked up too long. Now I use a Deltran Battery Tender Jr., which I hook up only overnight about every fourth week and disconnect the next morning. The mfgs. say you can leave them connected, but overcharging is the worst for all batteries.

University of Da Nang Class of '68 In the End, the Captain stands alone... " Fat, drunk, and stupid is no way to go through life, son." Dean Wormer