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Actually, Not true! The battery self- discharges due to internal resistance inside the cells. It's in the chemistry of a lead acid battery. Of course, that doesn't mean you can't clean the top anyway... NiCads also have this problem, but worse- they typically only 'store' for a month. Which is why your cordless drill poops out quickly if you haven't used it for a while... Toby Jake Kooser wrote: > > I've read in the HP Books "automotive electrical handbook" that I have > that the reason a disused battery (or one used to hold down a concrete > floor, for you "other side of the coin" types) is due to dirt and > moisture on the top of the battery creating a path for it to discharge. > Might be true, might not. I clean my batteries with baking soda and > water to get rid of any excess acid on the top and the layer of dust > that always collects there. Sure makes 'em look a lot better and only > takes a couple of minutes while the oil drains out on maintenance day. > Besides, if a battery makes it to the garage floor, it's either on it's > way to the recycling joint or it becomes the "instant starter tester". > > Jake Kooser