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Old 10-13-2019, 01:57 PM   #1
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2019 Bay Star- winter storage battery question

I have finished winterizing our 3408. But I'm really unsure of what to do with the batteries over the winter. I have indoor storage, but no heat or electric. Will certainly get down to single digits or lower over the winter here in Wisconsin.

I've read some posts where the recommendation is to remove the negative cables. Is that for both house and chasis batteries? Any other suggestions? I'm interested in understanding what others do with their batteries over the winter. Thanks
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Old 10-13-2019, 03:31 PM   #2
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I own a Baystar and store it for four months in a drier desert climate. I disconnect negative terminals at both chassis and house batteries. I leave them in place. In your colder temperatures, Iíd probably remove them and store at home using a trickle charger.
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Old 10-13-2019, 06:38 PM   #3
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If 110v is available, why don't you just plug your shore power cord into a 110V outlet (using the proper adaptor, of course). It'll keep the batteries charged and I can't imagine you'd have a problem with them freezing. You'll still need to check the water levels monthly but I think I'd rather do that than remove them. When my Baystar is plugged into 20 amp power it only draws 2 amps.

edit: I just did a couple of quick online searches and one fellow reports that a fully charged battery will not freeze until approximately minus 76 fahrenheit. But then you can't believe everything you read on the net.
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Old 10-13-2019, 07:28 PM   #4
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Originally Posted by mvintx View Post
If 110v is available, why don't you just plug your shore power cord into a 110V outlet (using the proper adaptor, of course). It'll keep the batteries charged and I can't imagine you'd have a problem with them freezing. You'll still need to check the water levels monthly but I think I'd rather do that than remove them. When my Baystar is plugged into 20 amp power it only draws 2 amps.

edit: I just did a couple of quick online searches and one fellow reports that a fully charged battery will not freeze until approximately minus 76 fahrenheit. But then you can't believe everything you read on the net.
He said he didn't have electric.
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Old 10-13-2019, 07:33 PM   #5
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Michigan has the second most boats of any state in the US.

Most are stored with batteries disconnected but still in the boat.

As long as the batteries are fully charged, they will last all winter in storage.

Cold batteries hold there charge better then warm or hot batteries.
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Old 10-14-2019, 06:26 PM   #6
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Originally Posted by twinboat View Post
He said he didn't have electric.
Oh Duh. Thanks. Newbie error not to read the entire post carefully.
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