After Pepa asked me about my EDTA experiments I decided to look around for my SpG tester. What I fould next to was the first battery that I used EDTA on, with the caps off. It's a 12 volt deap cycle FLA trolling motor battery. The electrolyte level was very low, due to evaporation I guess, and required about 1.5 pints to get to the correct level. It read 6.4 volts after filling so I was expecting the worst but after charging it up with my Schumacher speed charger it's acting like a perfectly good battery again. No visual signs of sulfation, pulled my load tester solidly into the green, and even allows the charger to auto switch into 30A mode. Very suprising as the battery has been sitting for at least a year and a half. I was really expecting it to be quite dead. Usually a nice fresh battery has very fine bubbles when charging while a heavily sulfated battery will show larger bubbles under charge. This neglected battery acts like a nice fresh battery after this abuse. I'll put a good charge/discharge cycle on it for the next few nights to see how it behaves.
John......