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  #11  
Old 11-04-2012
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Re: Winter is coming -Battery Question?

Quote:
I also remove all signaling devices because if there were a fire, I would not want the guys in the FD having to deal with SOLAS flares going off.smurphy
Good idea about the flares. Never thought about that.
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Old 11-04-2012
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Re: Winter is coming -Battery Question?

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Originally Posted by smurphny View Post
They are heavy sobs and I always dread disconnecting all the wires, ANL fuses, etc. and then getting them down the ladder and into the car.
It occurs to most that the risk of injury or damage lugging a battery bank in and out is greater than the risk of a system where all breakers and switches are open.

And for most, visiting the boat a few times in the off season is just good sense anyway.
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Old 11-11-2012
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Re: Winter is coming -Battery Question?

hopefully this is related enough not to be off topic. I'm buying new batteries for my solar-charged house bank. I'm told that one should test the batteries at the store to make sure you're not being sold old stock or otherwise batteries that are otherwise less than optimum. but how do you test 'em? just with a hydrometer?
thanks
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Old 11-11-2012
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Re: Winter is coming -Battery Question?

Quote:
Originally Posted by sapo View Post
hopefully this is related enough not to be off topic. I'm buying new batteries for my solar-charged house bank. I'm told that one should test the batteries at the store to make sure you're not being sold old stock or otherwise batteries that are otherwise less than optimum. but how do you test 'em? just with a hydrometer?
thanks

You can just measure the open circuit voltage with a volt meter. There is no real benefit to measuring the SG on new batteries because the cells are still new and un-cycled...

They should be above 12.6V or darn close to it. Try to buy batteries with matching date codes and the freshest date codes on the shelf. For example if there are four group 31 batteries and you need two, and the date codes look like this:

J12
C12
E12
J12

You want the two J12 date coded batteries. they theoretically should match better and have been produced at or about the same time. Often times the letter is the month with Jan being "A" and the year being "12"... This may not be the same for all batteries so ask your supplier how to interpret the date codes and choose the freshest batteries..
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Last edited by Maine Sail; 11-11-2012 at 11:25 AM.
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Old 11-12-2012
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Re: Winter is coming -Battery Question?

I leave my fully charged batteries in the boat all winter here in Canada and never had a problem. I do make sure to remove the cable connections from the battery posts. I'm on my 7'th year with these flooded Kirkland dual purpose batteries and note that in the Spring launch, they spin the engine as fully charged.
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