You can test the acid in your batteries ("specific gravity") and you can take
them to an auto-shop and have them load tested...

When was the last time they got a good full charge?

We're going on 3 years with a couple of die-hard deep cycles..
Last year; one battery wouldn't keep the anchor light & cabin lights going all
night -- we took them home & put them on the battery charger and gave them a
full charge, back to normal now...

On Sun, 15 Feb 2004 22:28:14 -0600, Messing In Boats
wrote:

I've got a two year old house bank of two Group 27B's. (the 27B's are
supposed to be a little bit better than a plain Group 27) Last summer
they seemed to loose their ability to keep my refrigerator and anchor
light working as long as they used to and I'm wondering if they are shot
or not. They have gotten a lot of use these last two years, so I won't
whine too much if they are gone, but I would hate to replace them if
they aren't.

How do I check this out?

Is there some way to de-sulpher the plates or something to re-energize
them and save me a $130 trip to Sam's Club?

Capt. Jeff


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