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Battery Battery Battery

Old 12-29-2017, 05:22 AM
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I keep mine in an unheated attached garage and charge them about every 4 to 6 weeks.
Never had an issue.

I also have an old discharged deep cycle battery that I've been keeping in an unheated shed for the last few years. Our temps get down into the neg teens. It hasn't froze yet.
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Old 12-29-2017, 05:30 AM
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Not being a wise ass , what makes your boat batteries any different than the car you have outside? Keep the battery charged and all is well. A battery does not know it is in a boat or a car . It just wants to be charged.
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Old 12-29-2017, 05:51 AM
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Originally Posted by 1NO REGRETS View Post
...what makes your boat batteries any different than the car you have outside? Keep the battery charged and all is well. A battery does not know it is in a boat or a car...
True enough.
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Old 12-29-2017, 06:25 AM
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In the basement on wood. Charge every 2-3 weeks. 15? It's 7 right now in CT
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Old 12-29-2017, 06:52 AM
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Not a thing.
Cranks up first time every year too
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Old 12-29-2017, 08:53 AM
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Originally Posted by 1NO REGRETS View Post
Not being a wise ass , what makes your boat batteries any different than the car you have outside? Keep the battery charged and all is well. A battery does not know it is in a boat or a car . It just wants to be charged.
uhhhhhh ................The CAR starts / runs / charges everyday / year round The boat sits 4-5 days a week in the warm weather & sits un started un charged all of dec / jan / feb & 1/2 of March !!!!

just a lil different ................
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Old 12-29-2017, 10:16 AM
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If the batteries are in good shape and are put into storage fully charged, they will not discharge that much over the winter. When I winterize the boat, I fully charge both, then I will usually open up the cover on my boat and charge them once mid winter. You can tell if they are good by how long it takes the charger to bring them back up to full charge. Usually 1/2 hr to 45 min If they take a lot longer the batt is getting weak and not taking a full charge. Make sure there are no drains when the boat is stored. I keep the batt switch OFF and I have not had problems over the years with putting the boat up with them fully charged and doing it maybe once during the winter depending on if there is snow on the cover or not....
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Old 12-29-2017, 11:14 AM
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Originally Posted by Mata Peje View Post
uhhhhhh ................The CAR starts / runs / charges everyday / year round The boat sits 4-5 days a week in the warm weather & sits un started un charged all of dec / jan / feb & 1/2 of March !!!!

just a lil different ................
Yup...and I don't have an extension cord long enough to reach into the middle of the farm where I store my boat to keep a charger on it.
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Old 12-29-2017, 11:17 AM
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The two worst things for battery life are heat and overcharging. A battery will last longer in cold weather than in hot weather.
When it is cold the self discharge rate of a battery actually slows down.
I'm in Calgary so it gets colder here than most of you will see. I leave my batteries in the boat disconnected, you don't want any drain on them during storage. About every 2 months I'll put the charger on them for the day. my batteries are going on 7 years old now and still going strong.
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Old 12-29-2017, 11:19 AM
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Originally Posted by D_Westie View Post
The two worst things for battery life are heat and overcharging. A battery will last longer in cold weather than in hot weather.
When it is cold the self discharge rate of a battery actually slows down.
I'm in Calgary so it gets colder here than most of you will see. I leave my batteries in the boat disconnected, you don't want any drain on them during storage. About every 2 months I'll put the charger on them for the day. my batteries are going on 7 years old now and still going strong.
Thanks CALGARY thats just what I needed to know !
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Old 12-29-2017, 11:28 AM
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Originally Posted by Mata Peje View Post
Thanks CALGARY thats just what I needed to know !
It's only minus 25 here right now in the middle of the day.
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Old 12-29-2017, 11:35 AM
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I've done both. This year I moved them to the basement and charged them. I'll charge them again in the spring and put them back in the boat.

I have also left them in the boat on a solar trickle charger and they've been fine. One 8 hour charge in the spring and good to go!
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Old 12-29-2017, 11:39 AM
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Originally Posted by Mata Peje View Post
uhhhhhh ................The CAR starts / runs / charges everyday / year round The boat sits 4-5 days a week in the warm weather & sits un started un charged all of dec / jan / feb & 1/2 of March !!!!

just a lil different ................
sorry , but you are not reading the part " charge" and all is well....carry on Maybe get warmed up and you'll be ok.
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Old 12-29-2017, 11:43 AM
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just think of it like this, if the boatyards had to take every battery out of the boats in the yard and store them in a special way.....I think you can take the hint. They don't, they just disconnect them. wrap the boat or just leave them until spring.
Happy New year.
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Old 12-29-2017, 11:46 AM
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Originally Posted by LouC View Post
If the batteries are in good shape and are put into storage fully charged, they will not discharge that much over the winter. When I winterize the boat, I fully charge both, then I will usually open up the cover on my boat and charge them once mid winter. You can tell if they are good by how long it takes the charger to bring them back up to full charge. Usually 1/2 hr to 45 min If they take a lot longer the batt is getting weak and not taking a full charge. Make sure there are no drains when the boat is stored. I keep the batt switch OFF and I have not had problems over the years with putting the boat up with them fully charged and doing it maybe once during the winter depending on if there is snow on the cover or not....
This ! If it's a good battery when you store, it'll still be good come spring. I put the boat away in November, sometime around end of March I'll throw the charger on them for an early April launch.
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Old 12-29-2017, 11:46 AM
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When I winterized boats for my customers, I always disconnected the batteries and told the customer to trickle them every couple weeks or so. If that meant they needed to put them in garage...so be it. Just don't sit them on concrete floor.....
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Old 12-29-2017, 02:13 PM
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Originally Posted by homeby51 View Post
.....don't sit them on concrete floor....
Back in the day, that's how they taught me.

Concrete floors were said to drain a battery, I wonder where that came from?
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Old 12-29-2017, 02:37 PM
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I've always left mine outside in the boat. Never failed to start the boat in the spring without charging them. The last 2 years I've left a small solar charger hooked up to it.
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Old 12-29-2017, 03:04 PM
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The part about heat and overcharging is right on. Put a digital voltmeter on your batts to make sure your alternator is not overcharging, I had this problem, due to resistance in the wiring for the sense wire to the alt. You could not tell from the dash gauge due to resistance in that wiring as well, but when I put a digital meter on the batts they were being charged at 15.5V which is too much. I re-wired the sense circuit as per instructions from Arco and I got it back to 14.2V. No more batt issues after that!
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Old 12-29-2017, 03:05 PM
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Originally Posted by Go Boating View Post
Back in the day, that's how they taught me.

Concrete floors were said to drain a battery, I wonder where that came from?
I think because the outside case of batteries used o be porous (rubber?). This would allow liquid from battery to be in contact with concrete potentially lead to a path for the electricity to flow, resulting in the battery draining. Now batteries are plastic and are excellent insulators....
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