Technically why do you not add

[pano]

more acid to a battery instead of distilled water when it gets low?

[Anonymous]

Only the water evaporates leaving behind a more concentrated acid solution. Basically, acids are formed when certain acid compounds are mixed with water. Without getting into chemistry, that's the simplest answer.

[Anonymous]

Let's see if I can remember chemistry...

H2S04 for sulphuric acid
Pb for lead, something else for spongy lead
H20 for water

ahhhh, maybe not, I'm on vacation.

Steve

[saaz]

I am also on vacation, but agree with the first answer! Acid fill is only for the first time, after that replace the evaporated fluid ie water

[Anonymous]

That's right. You are replacing only what evaporates from the battery, the water. The acid (H+ SO4--) remains behind more concentrated in less H2O. Replacement with distilled water re-establishes the proper concentration (and keeps the plates from oxidizing in the air if the level gets too low).

[pano]

Thanks for all the replies. I wasn't sure if for safety reasons "they" didn't want people to have acid laying around for accidents to happen, but it makes sense that the lead to acid ratio has alot to do with it.

[Hoomgar]

I used to work for a local battery manufacturer and wouldn't have been able to answer that. I knew that was how you do it. But couldn't have told you why.

lol