I wanted to see what everyone has in the way of battery chargers. I have one kinda like this http://www.amazon.com/exec/obidos/ASIN/B00002265E/ww2links-20/002-5183084-8998413 But yesterday i managed to get it smoking pretty bad, and now I think it is almost completely dead. Not to mention the time before that i used it my optima started hissing from what i think was overcharging. So what should i go for? Another one of these century chargers, or some other one? What do you use in your shop?