If you use a charger that has "desulfator" capability, you can reverse
much
of the sulfation that has taken place on the plates. I have heard many
claims
on this , both for informed and un-informed sources. Lots of patents
have been
issued for desulfators. Lots of lab tests..... It probably works.

The desulfator chargers cost a little more, tho. Instead of putting a
DC or
pulsating unipolar AC on the plates, they put a high frequency pulse on
the
plates to charge the battery with thousands of little pulses per
second, the
theory being that it "shakes loose" the sulfation. Not complicated,
but
it takes more than a transformer and a rectifier in the charger......

I haven't tried it myself, but have researched it pretty well. I think
it probably
works......

Andy