Great batteries wont leak.
DO NOT USE A TRICKLE/float CHARGER ON THEM! It will kill them.
They like being charged by the cars charging system, they dont like being deep cycled, if you run them down you need to use a nice 15+ amp charger to bring them back up.
Read their charging instructions.
They will hold a charge forever if you disconnect the + cable in storage.
I have a small one that will crank a V8 with 13:1 compression. (Mean green starter)
Cheers __________________
Dave - PDX
1995 318ti - Active Black and Tan.
2005 330xi - Mtech 1 - 6spd - Orient Blue/Black |