"Rick" wrote in
:

I have a few AGM boat batteries that are sulfated up and in need of a
charge. They are off the boat and in the gararge but my current charger
won't charge them.


WRONG....You have a few AGM boat batteries that are sulfated up and in need
of REPLACEMENT, not charging. Charging isn't going to fix them....

Larry
--
Halloween candy left over.....
Is there a downside?