I'm gonna leave the bullshit on the curb with this one: I'm sorry you had to learn the danger of batteries with physical injuries. That would be tough to live with. I've seen training films through the years and the danger has been preached many times so never had to experience it first hand. I do carry and use a neoprene apron, skull cap, safety goggles, and a full face shield when load testing battery banks. This is also used in evaluating performance. You are one that has learned to respect this area. So many do not and repeat the same mistake. One of the most common incidents that happens with batteries is to try to jump start a very low temperature, or frozen battery. With the inrush of current a rapid buildup of heat and boiling of the electrolye occurs, and things start to expand on very short order. When the expansion of the internal plates cannot move effortlessly, pressure builds until something blows. If you lost your hearing, you know it is not a quiet affair. Sulfuric acid is not easy on clothing, and very bad on the eyes, and skin. If one goes to jump start a vehicle always hook up the discharged battery first, and disconnect last. This is due to the heating effect I have mentioned earlier. As soon as boosting current is added to the discharged battery, it starts to gas. This is the explosive part of the equation. This is also why you disconnect last. If one disconnects this area first, there is most times a spark. You can guess what a spark in an explosive atmosphere can equate to and the result. This is also why it is best to hook the booster cable to the positive post of the discharged battery, and the negative lead to a suitable ground separate from the battery, (like engine bracket, block etc.). I'm not one that lives or preaches on the side of caution. Many of the batteries I work with are for locomotive starting and used on generator sets, with a capacity well over 500 amperhours at 8VDC rating each; Safety is mandated with this kind of current available. In other words there is a very strong possibility for death or injury if safety is not followed, and practiced. A guy I worked for in high school once told me about digging bakelite chips out of his chest with a pair of tweezers when a battery exploded on him. This was in the 60's some time and was readily willing to warn me of the inherent dangers of working with what so many take for granted. You only have to get hurt once to remember it well. I'd rather not have that lesson. Rob