Can I add water to the battery on 2001 Lexus LS430

I added water to the battery before discovering in the manual that you are not supposed to add water to the battery. Will this damage it? A light had been left on in the car which drained the battery originally, but charged it up, saw water was low in battery , so added it. What happens if there is too much water in the battery?

by in Jonesboro, GA on April 25, 2011
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1 answer
ANSWER by , April 25, 2011
If the battery is the regular acid one and you added distilled water that's OK, the problem is with regular tap water because of the mineral content. That could shorten the life of the battery since minerals will create a short between the cells. Zee