GeoffSchultz wrote:
On Feb 24, 7:19 pm, Wayne.B wrote:
On 24 Feb 2007 14:45:32 -0800, "GeoffSchultz"

wrote:
The batteries were fully charged. Unfortunately these are sealed lead
acid and can't be tested with a hygrometer.
I'm opposed to the use of sealed batteries for deep cycle house banks
for exactly that reason. How do you know that your batteries are not
half dry? I'd be almost willing to bet on it.

Clearly I don't know. The problem is that my battery boxes are under
the sole and have no venting. I wanted AGMs, but the only thing
available in Guatemala was lead acid. Based upon conversations that I
had with highly respected boat builders and a relative who designs
batteries for a living, they suggested the use of a sealed battery to
avoid the build-up of hydrogen in this space. As is usual, boats are
a series of compromises. I took the advice of people who have far
more expertise than I do in this field.

Anyhow, this is what I have and I'm trying to figure out what's going
on. I suspect that there's a short in a cell.

-- Geoff

AGM's are lead-acid also. They just have a glass mat that is 95%
saturated with acid vs a "flooded" cell
krj