Nope, it's definately strong acid when charged, weak acid when discharged:Hell Razor5543 wrote:I accept that I could be wrong re acidity changes. What I was told was that as the charge dropped, the acidity level increased, and, over time, this would rot the plates. However, as I said, I could be wrong (possibly by being given incorrect information).
http://en.wikipedia.org/wiki/Lead%E2%80 ... ochemistry" onclick="window.open(this.href);return false;
A dead flat lead acid battery that hasn't been left flat too long (maybe a few hours) is still difficult to charge due to the very high resistance of the weak acid mix but it will recover given a chance. When its left too long the lead sulphate on the plates causes a permanent high resistance which prevents the cell conducting properly. "Sulphated plates".