Re: [OMC-Boats] AGM Batteries

I have a 1968 Sportsman and live in Orange County in So. Calif. I have no
extreme temperature problems, but it is so easy to pull the battery out of
the boat, that I routinely do so. I put it in my garage and hook up a
trickle charger to it. So far I have seen no evidence of any problem with the
battery.
 
 
In a message dated 5/30/2009 7:27:43 A.M. Pacific Daylight Time,
lib1@... writes:

Michael brings up a very good point relating to how important battery
storage is for extending service life. All battery (regardless of type) life
will be decreased by temperature swings, especially when not in use.

In the summer my boat sits in a secure storage lot. But the hot sun can
result in temperatures exceeding 110 - 130 F under the canvas storage cover.
That's where the deshulphators come into play. Aircraft owners know this
and have similar concerns.

Also, it is important to always pull your batteries out of service at
seasons end, give them a slow, but full charge and then "store them in a cool,
dry place," as the Travelling Wilburys used to sing.
Freezing winter temps is certain (premature) death to a battery that is
just sitting and not having its charge level (specific gravity) maintained.

It also affords you an opportunity to give them a good cleaning.

If you treat marine (especially) batteries properly it's not unusual to
double or triple their life expectancy. Keeping batteries in service longer
and out of landfills is good for the environment too.

On May 30, 2009, at 5:09 AM, Michael Wolczyk wrote:

Interesting. I have a Mazda Miata which uses the AGM, and they are a
PITA. Mazda has gone back to conventional. I have had very good luck with
conventional batteries in my boat (outboard). Got a used Delco in 1988 and
had it until 2003 (15+ years) when I switched it to a car I was selling.
Also still have the original battery in my 1996 Ford. Trick is to store
correctly and never let go dead.

On Fri, May 29, 2009 at 4:50 PM, Wayne <_wayne@...
(mailto:wayne@...) > wrote:

I have a Sportsman 155 with a Buick V6 and would like to use an "Absorbed
Glass Mat" battery. Any advise or warnings I should be aware of? I bought
a dual purpose AGM battery with more CCA than the standard starting
battery. It cost me $113.00 on sale, but I really like the higher reliability
and 3 year warranty. I believe the maximum charge voltage for the battery is
 14.1 volts and it should not be exceded. But I don't know what the
voltage output of the alternator is.
Wayne

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Received on Saturday, 30 May 2009