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Next: Interesting Boating Rules
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External
Since: Jan 01, 2004
Posts: 128
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(Msg. 1) Posted: Wed Aug 11, 2004 7:10 pm
Post subject: Battery switch question.
Archived from groups: rec>boats (more info?)
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External
Since: Jan 07, 2004
Posts: 1072
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(Msg. 2) Posted: Wed Aug 11, 2004 7:34 pm
Post subject: Re: Battery switch question. [Login to view extended thread Info.]
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On 11 Aug 2004 16:10:22 GMT, ccred68046.TakeThisOut@aol.comnobull (CCred68046)
wrote:
>Does anyone know of a 2 battery switch that just allows for the use of one
>battery or another at a time but NOT both? I just want a simple A/B switch.
>
>Thanks.
<a style='text-decoration: underline;' href="http://www.charlesindustries.com/main/ma_bat_switches.html" target="_blank">http://www.charlesindustries.com/main/ma_bat_switches.html</a>
<a style='text-decoration: underline;' href="http://store.wardmarine.com/Merchant2/merchant.mv?Screen=PROD&Store_Code=WMOS&Product_Code=SCP11501&Category_Code=BS" target="_blank">http://store.wardmarine.com/Merchant2/merchant.mv?Screen=PROD&Store_Co...WMOS&Pr</a>
<a style='text-decoration: underline;' href="http://www.marinegeneral.com/acatalog/Online_Catalog_Battery_Switches_308.html" target="_blank">http://www.marinegeneral.com/acatalog/Online_Catalog_Battery_Switches_308.html</a>
<a style='text-decoration: underline;' href="http://www.hopkins-carter.com/catalog/BatterySwitches.htm" target="_blank">http://www.hopkins-carter.com/catalog/BatterySwitches.htm</a>
<a style='text-decoration: underline;' href="http://www.aqua-marine.co.uk/acatalog/Aqua_Marine_Website_Batteries_and_Accessories_11.html" target="_blank">http://www.aqua-marine.co.uk/acatalog/Aqua_Marine_Website_Batteries_an...ccessor</a>
That should get you started.
Later,
Tom
S. Woodstock, CT
-----------
"Angling may be said to be so
like the mathematics that it
can never be fully learnt..."
Izaak Walton "The Compleat Angler", 1653<!-- ~MESSAGE_AFTER~ --> |
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External
Since: Jan 01, 2004
Posts: 128
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(Msg. 3) Posted: Wed Aug 11, 2004 7:54 pm
Post subject: Re: Battery switch question. [Login to view extended thread Info.]
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Thanks Tom but all those switches have a "BOTH" position. I am looking for one
that does NOT have a "both" position. I just want to be able to select battery
1 or battery 2. I have two very dissimilar batteries and its not a good to
put them in parellel. >> Stay informed about: Battery switch question. |
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External
Since: Jul 07, 2004
Posts: 4
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(Msg. 4) Posted: Wed Aug 11, 2004 7:54 pm
Post subject: Re: Battery switch question. [Login to view extended thread Info.]
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Why not get one with both, and never use the both setting, or get 2
individual on/off switches, one for each battery?
Thanks
Christian
"CCred68046" <ccred68046.DeleteThis@aol.comnobull> wrote in message
news:20040811125436.06719.00002916@mb-m13.aol.com...
> Thanks Tom but all those switches have a "BOTH" position. I am looking
> for one
> that does NOT have a "both" position. I just want to be able to select
> battery
> 1 or battery 2. I have two very dissimilar batteries and its not a good
> to
> put them in parellel.<!-- ~MESSAGE_AFTER~ --> >> Stay informed about: Battery switch question. |
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External
Since: Jan 01, 2004
Posts: 128
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(Msg. 5) Posted: Wed Aug 11, 2004 8:56 pm
Post subject: Re: Battery switch question. [Login to view extended thread Info.]
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External
Since: Jan 29, 2004
Posts: 1253
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(Msg. 6) Posted: Wed Aug 11, 2004 9:06 pm
Post subject: Re: Battery switch question. [Login to view extended thread Info.]
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"CCred68046" <ccred68046 DeleteThis @aol.comnobull> wrote in message
news:20040811135655.10796.00001207@mb-m13.aol.com...
> >Why not get one with both, and never use the both setting,
>
> I could do that but one thing I have learned with boats.. If something can
go
> wrong it will. LOL.
> Thanks.
Sounds like your boat's not the place to be unless a guest carries his own
life vest, EPIRB, fire extinguisher, sidearm, camping chocolate, spear gun,
jug of fresh water and a whole list of other things.
It's funny: No matter how many times I've wondered how fast my boat would
fill up with water, I've never removed the drain plug while fishing a mile
from shore. I really want to, but I can't bring myself to do it. But, I'll
bet it's gonna pop out one day and blow a hole in whatever surface it hits.
Probably the gas tank.<!-- ~MESSAGE_AFTER~ --> >> Stay informed about: Battery switch question. |
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External
Since: Jul 07, 2003
Posts: 378
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(Msg. 7) Posted: Wed Aug 11, 2004 10:20 pm
Post subject: Re: Battery switch question. [Login to view extended thread Info.]
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"Doug Kanter" <ancientangler.RemoveThis@hotmail.com> wrote in message
news:letSc.842$tr6.403@news01.roc.ny...
>
>
> It's funny: No matter how many times I've wondered how fast my boat would
> fill up with water, I've never removed the drain plug while fishing a mile
> from shore. I really want to, but I can't bring myself to do it.
>
Oh go ahead! Remove that plug. See how it feels and how much water
comes in through that little hole. See how much time you would have.
But be on your trailer or at the dock and with good pumps - and ready
to put the plug back in.
Huh?<!-- ~MESSAGE_AFTER~ --> >> Stay informed about: Battery switch question. |
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External
Since: Jan 01, 2004
Posts: 128
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(Msg. 8) Posted: Wed Aug 11, 2004 10:55 pm
Post subject: Re: Battery switch question. [Login to view extended thread Info.]
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>Sounds like your boat's not the place to be unless a guest carries his own
>life vest, EPIRB, fire extinguisher, sidearm, camping chocolate, spear gun,
>jug of fresh water and a whole list of other things.
Hahaha. Actually its just the opposite. My boat used to run 47mph till I got
all paranoid about safety gear after a good storm caught up with me at Lake
Erie.... best she will do now is 38. Hell, even my dog has a life jacket and
shes a Lab. 
..>It's funny: No matter how many times I've wondered how fast my boat would
>fill up with water, I've never removed the drain plug while fishing a mile
>from shore. I really want to, but I can't bring myself to do it. But, I'll
>bet it's gonna pop out one day and blow a hole in whatever surface it hits.
Probably the gas tank.
Thank God my plug is not facing the gas tank or I would be installing a 1/2"
thick 304 grade stainless steel plate between them thanks to you. <!-- ~MESSAGE_AFTER~ --> >> Stay informed about: Battery switch question. |
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External
Since: Jan 29, 2004
Posts: 1253
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(Msg. 9) Posted: Wed Aug 11, 2004 11:12 pm
Post subject: Re: Battery switch question. [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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"CCred68046" <ccred68046 RemoveThis @aol.comnobull> wrote in message
news:20040811155507.16492.00001261@mb-m14.aol.com...
> >Sounds like your boat's not the place to be unless a guest carries his
own
> >life vest, EPIRB, fire extinguisher, sidearm, camping chocolate, spear
gun,
> >jug of fresh water and a whole list of other things.
>
> Hahaha. Actually its just the opposite. My boat used to run 47mph till I
got
> all paranoid about safety gear after a good storm caught up with me at
Lake
> Erie....
It just takes one trip. For me, it was a trip on my dad's 32' Luhrs when I
was 12. We were trying to go from Montauk to Martha's Vineyard when the
weather got "interesting" - waves as high as the bridge. My two most
poignant memories are my mother yelling at him to stop imagining he was
still on his WWII aircraft carrier, and that maybe his son, who got high
grades in geometry should do the navigating from now on. Somehow, we ended
up in New Bedford, which was NOT a good place at the time. Two weeks later,
I was enrolled in a power squadron class and the parallel rulers became
mine.<!-- ~MESSAGE_AFTER~ --> >> Stay informed about: Battery switch question. |
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External
Since: Jan 07, 2004
Posts: 1072
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(Msg. 10) Posted: Thu Aug 12, 2004 12:48 am
Post subject: Re: Battery switch question. [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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On 11 Aug 2004 16:54:36 GMT, ccred68046.TakeThisOut@aol.comnobull (CCred68046)
wrote:
>Thanks Tom but all those switches have a "BOTH" position. I am looking for one
>that does NOT have a "both" position. I just want to be able to select battery
>1 or battery 2. I have two very dissimilar batteries and its not a good to
>put them in parellel.
Um....ok, but why "dissimilar"? I'm curious about two different
batteries.
Later,
Tom<!-- ~MESSAGE_AFTER~ --> >> Stay informed about: Battery switch question. |
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External
Since: Jan 01, 2004
Posts: 128
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(Msg. 11) Posted: Thu Aug 12, 2004 1:02 am
Post subject: Re: Battery switch question. [Login to view extended thread Info.]
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>Um....ok, but why "dissimilar"? I'm curious about two different
>batteries.
One is an old 1000 CCA deep cycle for trolling and the other is a new 420 CCA
starting battery. Switching them to the both position will cause the good
battery to be discharged by the weaker battery. The way it was described to me
by a battery expert was "If you pour good milk into bad milk you have a bunch
of bad milk".<!-- ~MESSAGE_AFTER~ --> >> Stay informed about: Battery switch question. |
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External
Since: Jan 15, 2004
Posts: 39
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(Msg. 12) Posted: Thu Aug 12, 2004 1:02 am
Post subject: Re: Battery switch question. [Login to view extended thread Info.]
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CCred68046 wrote:
>>Um....ok, but why "dissimilar"? I'm curious about two different
>>batteries.
>
>
> One is an old 1000 CCA deep cycle for trolling and the other is a new 420 CCA
> starting battery. Switching them to the both position will cause the good
> battery to be discharged by the weaker battery. The way it was described to me
> by a battery expert was "If you pour good milk into bad milk you have a bunch
> of bad milk".
Get a regular 1/both/2 battery switch. There's no problem switching
those 2 batteries together when charging. Just use the 1 or 2 positions
when you want to troll or start and use both when the engine is running.
Except when brand new batteries are fully charged, there's almost never
a situation when a boat with 2 batteries will have both of them in the
same state of charge. People parallel them all the time to charge
without a problem.
Steve<!-- ~MESSAGE_AFTER~ --> >> Stay informed about: Battery switch question. |
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External
Since: Nov 28, 2003
Posts: 138
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(Msg. 13) Posted: Thu Aug 12, 2004 2:21 am
Post subject: Re: Battery switch question. [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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On 11 Aug 2004 22:02:21 GMT, ccred68046.DeleteThis@aol.comnobull (CCred68046) wrote:
>>Um....ok, but why "dissimilar"? I'm curious about two different
>>batteries.
>
>One is an old 1000 CCA deep cycle for trolling and the other is a new 420 CCA
>starting battery. Switching them to the both position will cause the good
>battery to be discharged by the weaker battery. The way it was described to me
>by a battery expert was "If you pour good milk into bad milk you have a bunch
>of bad milk".
So... rather than replace the old, oddball battery(s), you think a different
switch is an appropriate fix? Gimme a break!
BB<!-- ~MESSAGE_AFTER~ --> >> Stay informed about: Battery switch question. |
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External
Since: Aug 11, 2004
Posts: 2
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(Msg. 14) Posted: Thu Aug 12, 2004 2:21 am
Post subject: Re: Battery switch question. [Login to view extended thread Info.]
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Most likely you were talking to a milk expert. In order for one battery to
discharge into another there must be a voltage
difference between two - one battery charged and another drained.
Discharge/charge current will be limited by voltage difference (open ckt.)
divided by sum of internal (source) impedances of both batteries. After
initial surge current will exponentially go down to zero as result of
equalizing of battery voltages. Since battery internal impedances are very
low and there were no other power dissipating loads in a ckt., there is no
signifficant energy loss.
In other words both batteries may be connected together. As soon as they
both charged -there no current from one to another. Charging current will be
shared by both differently every time due to difference in charge and
capacity..
Unlike bad milk there are no bad electrons.
Good luck. >> Stay informed about: Battery switch question. |
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External
Since: Jan 07, 2004
Posts: 1072
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(Msg. 15) Posted: Thu Aug 12, 2004 2:51 am
Post subject: Re: Battery switch question. [Login to view extended thread Info.]
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On 11 Aug 2004 22:02:21 GMT, ccred68046.DeleteThis@aol.comnobull (CCred68046)
wrote:
>>Um....ok, but why "dissimilar"? I'm curious about two different
>>batteries.
>
>One is an old 1000 CCA deep cycle for trolling and the other is a new 420 CCA
>starting battery. Switching them to the both position will cause the good
>battery to be discharged by the weaker battery. The way it was described to me
>by a battery expert was "If you pour good milk into bad milk you have a bunch
>of bad milk".
Just so I can get a grasp on this, why do you need to switch them?
Unless you are using something like a charger and want to switch it
from battery to battery, but that doesn't make much sense.
Are they not both 12 Vdc batteries?
Later,
Tom<!-- ~MESSAGE_AFTER~ --> >> Stay informed about: Battery switch question. |
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