many years ago, my brother and i went off to collect a derelict and unwanted car that need loving. in trying to start it we had jumpers on and off and what not. i dont remember all that we actually did but i was in the car and my brother moved a cable and somehow the gas from the charging process in the battery ingited. BOOM!!!! it blew the top of the battery straight up, well not all of it but a piece as big as the back of your hand. my brother 's head was right under there and i flew out of the car positive that he would have acid dripping off his face, but miraculously nothing. and oddly the battery actually would take and hold a charge with the hole in the top. astounding.

i have always had a whole different view of batterys since then... respect... and wary of them.

the above description of how to do it is excellent.

tom w

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.