On Sun, 16 Mar 2008 11:53:51 -0600, Don Foreman
wrote:
On Sun, 16 Mar 2008 09:47:13 -0500, Ignoramus4762
wrote:
A marine battery is not well suitable for starting motors, I am
speaking from experience. It may even work sometimes, fooling you into
thinking that you can just use it. until you find that sometimes it
cannot.
I would go with a pickup truck battery.
i
"Marine" batteries are often dual-purpose. They can certainly start
outboard engines, which typically are larger than the engines on
gennies and welders. They are designed to do exactly that. If your
boat has a Chevy 350 engine, then a truck battery might be a better
choice -- but automotive batteries are not as rugged. The pounding
they get running at speed in rough water will shake them apart inside.
If the battery is rated in amperehours (typically 80 or 105) it is
probably a deep cycle battery intended for running trolling motors
etc. They are not good starting batteries for large engines, but
they can deliver up to 50 amps with no problem.
If it is rated in MCA (marine cranking amps) then it is a dual purpose
quite suitable for starting servce and for moderate deepcycle service
as running lights, electronics, livewell pump, etc while the main
engine is not running -- which for most fishermen is much of the time
except for trolling. Trolling is done in walleye tournaments, but not
in bass tournaments. Bass fishermen who pay hefy entry fees tend to
expect their engines to start so they can make it to weigh-in on time.
A battery that can start a 225 HP outboard a dozen or more times in a
day would have zero problem cranking a welder engine.
Both types typically have a carry handle, and the terminals are
stainless wing nuts on lead posts with stainless studs.
More info:
http://www.boatsafe.com/nauticalknow...ne_battery.htm
http://www.exide.com/faq/faq_marine.html
Excellent explanation.
For high vibration, use a spiral cell battery like the Odessy Blue
Top.
Yellow is deep cycle, red is SLA, and Blue is Marine (higher vibration
and combination of high current and deep cycle)
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