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Battery Bank For Weekend Use Yurt In Western Maine?

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Old 09-09-2014, 06:50 AM   #1
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Default battery bank for weekend use yurt in western maine?

Preface: We are in the process of completing our 20ft White Mountain Yurt up in Western Maine. The yurt itself is more of a mental health project and excuse to do something fun and "hands-on" outdoors vs. a full-time home for us -- it will mainly see use on weekends year-round as we also have a kit built log home on the same land. Pictures of the build are in my gallery.

Was very excited and looking forward to geeking out building the off-grid power and battery bank infrastructure to drive some LED lighting and maybe a fan for the wood stove. But ...

The infrequent use scenario has me convinced that my dreams of a battery bank are impractical and/or impossible due to temperature reasons.

When idly looking at various battery options it looks like most of them are not designed to handle very cold temperatures (ie deep western main winters where the batteries may go unused for a week or more at a time ...). Because I don't plan to live there full time I can't promise that there will be any sort of constant temperature.

If I can't sensibly maintain batteries in a cold environment I may have to resort to a grid-tie 20amp circuit run underground and/or one of those small and quiet camping generators.

Anyone have any advice, guidance or tips for battery use in a new england winter? We do have good

insulation

all around but I can imagine the indoor temperatures will drop below freezing pretty often when we are not around and running the wood stove.

Is a battery bank impractical for this scenario?

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Old 09-09-2014, 08:47 AM   #2
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Default Re: battery bank for weekend use yurt in western maine?

Quote:
Originally Posted by chrisdag View Post
.

The infrequent use scenario has me convinced that my dreams of a battery bank are impractical and/or impossible due to temperature reasons.
Not sure why you believe that. I have my camping yurt up in the Adirondacks here in Herkimer County NY where it regularly falls to -30+ in the winter time and cold has never been an issue with my deep cell batteries. If you get a good MPPT charge controller, it will compensate for temperature. The controller will keep your batteries full and not overcharge the bank.

I snowshoe up here all the time in the winter and enjoy fully charged batteries from the same bank I have used for the last 2.5 years.
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Old 09-09-2014, 08:54 AM   #3
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Default Re: battery bank for weekend use yurt in western maine?

Thanks! Do you mind if I ask what type of batteries you are using? Flooded? Sealed? AGM?

Suspect I've been looking wrongly at integrated battery/charger/controller products all of which had poor operating temperature ranges in their tech specs that convinced me I could not use them in a mostly unheated outdoor-ish structure.

I'll look now just at the basic building blocks - batteries, chargers and inverters ...
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Old 09-09-2014, 09:23 AM   #4
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Default Re: battery bank for weekend use yurt in western maine?

I am using flooded for the main yurt, sealed for the bath yurt (Runs shower pump). Here is a post of my recent setup:

http://www.yurtforum.com/forums/powe...power-632.html
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