Distilled vs. Purified Water for batteries

[Danny]

As some of you know - I just got my first grandbaby a few weeks back.  The instructions that came with her is to use distilled water for her baby formula.  I would think what's good for a baby can't be bad for a bus

Danny

[tucsontattoo]

Looks like everyone is talking about what this water has in it or that water has in it.I think we're missing the point here ,distilled water doesn't have anything in it but water. If you add anything else to the batteries other than water you run the risk of causing a secondary chemical reaction in the battery that will almost certainly have negative results, ie. sulfating, calcifying or just plain lowering the Ph of the electrolyte.
  My humble opinion, spend the 1.00 or 2.00 on a gallon of distilled and make it up by buying the store brand cola or something

                          Tucson

[Barn Owl]

distilled water doesn't have anything in it but water. If you add anything else to the batteries other than water you run the risk of causing a secondary chemical reaction in the battery that will almost certainly have negative results, ie. sulfating, calcifying or just plain lowering the Ph of the electrolyte.
  Tucson

I agree with Tucson, I used to work at a plant that made deionized water for the U.S. military. They used it in their batteries. Distilled and deionized will both work. They are just two different processes that get the same end result, pure water. The last time I bought some from Wal-mart I paid $0.50 a gal. Batteries start to die the minute they are manufactured. How you take care of them determines how long or short that process will be.