What about the newer dual purpose ( start - deep )
batteries?

S


"John Cairns" wrote in
message
. net...

"silverback" wrote in message
news:tLBgg.8127$771.3210@edtnps89...

You can not overcharge a battery with a properly
functioning alternator.

Deck Gorilla

"In typical automotive use we have a thin plate cranking
battery that is
rarely discharged by more than a small percentage of it's
capacity. The act
of cranking draws the charge from the surface of the
plates, which are then

Enlighten me. From my experience on a multiude of vessels as crew, running
for hours and even days on both gas and diesel axilliary, I have never heard
of a battery begining overcharged by operation of an engine for extended
durations. I have been informed by many people that such an incident could
not occur with a properly functioning alternator.

Maybe, maybe not

What would you call being overcharged?
Perhaps these same people are aware that it often happens
that a battery is overheated and given too high a voltage,
resulting in lost electrolyte (easy to replace, but still a
PITA) and sulfation of the plates (also reversible, also
PITA). This isn't quite the same thing as "overcharging."


... Maybe you have experience
to contradict this? If so, I would be interested in the conditions and
siuations that led you your conclusions.




Mys Terry wrote:
First you will need to learn the difference between an alternator and a
regulator.


That's a good intelligent answer.

Don't ask DSK, cause he doesn't know.


Wrong. A regulator regulates, and alternator alternates.

DSK

"Mys Terry" wrote in message

First you will need to learn the difference between an alternator and a
regulator.


Bwahahahahahaaa... your boat has an outboard fer chris's sake.
This of course makes you the geriatric diva of marine electrical systems!?

Have another pill ... you old coot! Your advanced state of senile
dementia..... is becoming glaringly apparent.

CM-

"Scotty" wrote in message
...
What about the newer dual purpose ( start - deep )
batteries?

S

Can't help but thinking this is a marketing ploy, everyone seems to be
selling them. I can't really understand what they mean by dual purpose,
unless they're implying that the one battery is adequate for both a house
battery application AND a starting battery, no need for another dedicated
"house" battery. Any deep cycle battery with the correct MCA rating for a
particular application will do as a starting battery, and having dedicated
batteries for house and starting applications minimizes the possibility of
not having enough juice to start the diesel, should also prolong the life of
the batteries.

John Cairns

You know why Scot,

Its common knowledge to any sailor. The minute you set your sails &
course; the wind either dies or shifts to dead on your Bow.


Battery charging

Group: alt.sailing.asa Date: Sun, Jun 4, 2006, 10:38am (PDT+3) From:
(Scotty)
Ozone wrote ...

IOW, You could motor your sailboat a dozen times around the world
Why would he do that, it's a SAILboat?
S

http://community.webtv.net/tassail/ThomPage

"Scotty" wrote....
What about the newer dual purpose ( start - deep )
batteries?



John Cairns wrote:
Can't help but thinking this is a marketing ploy, everyone seems to be
selling them. I can't really understand what they mean by dual purpose,
unless they're implying that the one battery is adequate for both a house
battery application AND a starting battery, no need for another dedicated
"house" battery. Any deep cycle battery with the correct MCA rating for a
particular application will do as a starting battery, and having dedicated
batteries for house and starting applications minimizes the possibility of
not having enough juice to start the diesel, should also prolong the life of
the batteries.


A single battery would be a bad idea, even if it was truly
"dual-purpose," unless you placed light house loads on it
and really didn't need it to start the engine.

OTOH if you shop around, there are dual purpose batteries
with easily enough cranking amps to start our diesel (which
bigger than anybody else here is likely to need), and with
enough reserve amps to serve as a good house battery. And
they're less expensive per amp, although they tend to be
more bulky & heavy than a single purpose of the same rating.
An oversized dual purpose battery used for starting is also
likely to have a longer service life than a starting battery.

IMHO it depends on what you're looking for.

Fresh Breezes- Doug King

"Mys Terry" wrote in message

It's somewhere in-between. Sort of like Ganzy. Deep Cycle batteries have
fewer,
thicker plates, so they are not as capable of supplying sudden bursts of
energy
demanded by starting. Starting Batteries have more, and thinner plates, so
they
can proviode larger amounts of current for shorter periods. The combo
batteries
are the worst of both worlds.

In effect you are claiming that Ganzy is the homo of humanity.... and dual
purpose batteries are the M26X of the marine batteries? I take offence at
this... you should seriously try to be more positive. It's as obvious as the
orderly approaching you with another enema.... that a dual purpose battery
was designed for a dual purpose boat!! Which proves without a doubt that
everything has a place... Ganzy at the helm of his MX26 with 2 banks of dual
purpose batteries... motorsailing in California! Glory Sail!!

CM-

"Mys Terry" wrote in message
...
On Sun, 04 Jun 2006 22:53:48 GMT, "Capt.Mooron"

wrote:


"Mys Terry" wrote in message

First you will need to learn the difference between an alternator and a
regulator.


Bwahahahahahaaa... your boat has an outboard fer chris's sake.
This of course makes you the geriatric diva of marine electrical systems!?

Have another pill ... you old coot! Your advanced state of senile
dementia..... is becoming glaringly apparent.

Poor Mooron - Can't even get his dinghy wet, much less his patchwork
Nordica.


You long for Ganzy's dinghy and are envious of my Nordica... admit it!

CM-

In article ac%gg.12942$A8.7152@clgrps12,
Capt.Mooron wrote:
You long for Ganzy's dinghy and are envious of my Nordica... admit it!

CM-

Mooron is quite an angry person, isn't he. Quite a pathetic person,
deserving of our sympathy.



--
Capt. JG @@
www.sailnow.com

In article k8%gg.12936$A8.7488@clgrps12,
Capt.Mooron wrote:
In effect you are claiming that Ganzy is the homo of humanity.... and dual
purpose batteries are the M26X of the marine batteries? I take offence at
this... you should seriously try to be more positive. It's as obvious as the
orderly approaching you with another enema.... that a dual purpose battery
was designed for a dual purpose boat!! Which proves without a doubt that
everything has a place... Ganzy at the helm of his MX26 with 2 banks of dual
purpose batteries... motorsailing in California! Glory Sail!!

CM-

No Mooron, you're just an angry guy who has a lot of obvious
inadequacies.


--
Capt. JG @@
www.sailnow.com