The maintainers prevent sulphation, but don't have the power to "desulphate" once it's happened.
"Equalization" is the process used to desulphate batteries that have sat too long in a low state of charge. It basically overcharges the battery and "cooks" the sulphation off the plates. Takes a big charger if you've got a big battery, and also needs to have the overvolting "equalization" mode.
I'll add that if you ever do that to an AGM battery like an Optima, it will ruin the battery fast. It's the main reason why AGM batteries have failed so miserably in large battery banks. Most big battery-bank chargers have equalization modes. When used on lead-acid batteries, it makes them last longer. When used on AGMs like Optimas, it kills them. Same can happen in a car or truck or tractor if something goes wrong with the charging system. If voltage gets too high, a conventional lead acid battery will need gas and a water refill, but otherwise do fine. An AGM battery will get ruined.
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Today's Featured Article - Gatherin of the Orange - by Rick Nikolich. In July of 1998 I was talking to fellow Allis Chalmers collector Mike Schilling about the annual "Gathering of The Orange" AC show coming up in August of 1999. He got this wild idea that we should get a convoy of AC tractors and drive them from Charlotte, Michigan 105 miles to LaGrange, Indiana.
... [Read Article]
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