Steve Lusardi wrote:
Gordon,
If the information you have posted is all the info you possess, it is
not enough to blame anyone for the 2 year life cycle. Here are two facts.

1) All lead acid batteries degenerate over time and that degeneration is
amazingly linear. The slope of this linear line is a function of usage.
The accepted industry typical usage length is 5 years if the discharge
doesn't drop below 70%. (That's charge, like in coulombs, not voltage)

2) Battery design choice and sizing is very important and should be
tailored to the intended service expected.

I suspect you have either underestimated your house load, underrated
your storage requirement or violated one or more of the rules above.
Keep in mind that the rating a manufacturer states is based on the best
conditions possible, which you have no chance of duplicating. You should
derate the amp/hr rating by at least 25% to compensate. You should
re-analyze your real requirements to make certain the failure isn't your
own.
Steve


"Gordon" wrote in message
m...
This is an email from the south bound cruising group. Take it as you
will.



Be Careful!!
Here is my short story on Trojan AGM Batteries:

AS I said, this was a post in the south bound group. NOT my boat and
this is all I know. Take it as you will!
Gordon