Good advice! Batteries give off hydrogen gas as they charge, and the atmosphere around the vents can get explosive. That's also a good reason to connect the ground side of a set of jumper cables to the engine block on both vehicles instead at the top of the battery. Connect hot to hot at the battery, then ground to ground as the final connections, as far away from the battery as possible. If you're working with a positive ground system, remember that hot on the boost vehicle will be ground on the + ground one. I've seen some cross-polarity hookups that got really exciting, and fried alternator rectifier diodes!
Jerry
Last edited by Hotrod Lincoln; 09/02/2010 3:59 PM.
