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Old 12-23-2017, 09:52 AM   #11
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Originally Posted by Lloyd View Post
Full timers have to leave their rig plugged in all the time. It's being used.
But, they're set up where it's warm and sunny, not up north here where it's cold with nothing being used, like Mark was talking about.
And the OP question was "will it hurt the inventor/charger or batteries", the answer is NO it won't hurt them, I don't think electricity freezes.
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Old 12-23-2017, 06:02 PM   #12
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Thanks for letting me know the electricity won't freeze.

But I was more concerned about the converter running in the cold temperatures. And, If the battery is fully charged and either the converter charger or the maintainer charger is not running, will the battery fluid freeze.
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Old 12-24-2017, 07:50 PM   #13
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I leave the batteries in, but I take the cables off and put one of these on.

https://www.northerntool.com/shop/to...2201_200332201

I have done this for years. In fact I just bought another one for the JD. They're on sale now. A lot better price then when I bought the first one.
I have 4 of the Battery Minders I've used for 12 years. I leave the batteries in the vehicles at home and hook these up. We are gone 6-8 months/year and when we come home the batteries are all great. Before I used these, I'd have to buy batteries every 2 maybe 3 years. I've gotten up to 8 years out of a battery using these because they "desulfinate" the battery plates. I"ve always left the battery in the RV connected when plugged in to shore power.

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Old 12-24-2017, 07:59 PM   #14
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I have 4 of the Battery Minders I've used for 12 years. I leave the batteries in the vehicles at home and hook these up. We are gone 6-8 months/year and when we come home the batteries are all great. Before I used these, I'd have to buy batteries every 2 maybe 3 years. I've gotten up to 8 years out of a battery using these because they "desulfinate" the battery plates. I"ve always left the battery in the RV connected when plugged in to shore power.

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I also recommend checking your converter. Many older and lower end RVs have converters that will overcharge the batteries, thus severely limiting their life. For several hundred dollars you can replace it with a "smart" one which senses the batteries and charges accordingly.

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Old 12-27-2017, 09:22 AM   #15
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My understanding for bringing in batteries is freezing and bursting if/when they discharge. Most batteries have either distilled water or gel. When they are charged, the contents do not freeze and burst.

I live in New Hampshire. Until this year, I have brought my battery(s) in when I winterized my RVs, put them on shop floor on wood blocks and charged with car charger ever couple months to full charge.

This year I bought purchased a 15 amp to 50 amp dog bone adapter and have left it plugged in. Wanted it to avoid having to drag out the big cord, 50 to 30 dog bone and 30 to 15 plug. Less connections. I'm not sure about whether or not my converter will overcharge or not. I leave it plugged in all season at a seasonal site and have not had an issue. The breaker in the panel has popped a few times and the only change I can think of is that I have this plugged into an GFI outside socket. It is likely the GFI working as it should. Blowing snow or whatever causing the breaker to trip. I've gone into the RV about once a week and the panel indicates full charge.

I've been parking my motorcycles in a Rubbermaid shed for years with a battery tender connected to each and plugged in without any issues.

I think the key to protecting the battery is keeping it charged in cold weather whether in the RV with the RV plugged in or with some sort of charger on the batteries to keep them fully charged. I honestly don't know about the converter over charging the batteries.

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Old 12-27-2017, 04:44 PM   #16
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The battery gauge will always show fully charged when plugged into shore power, if you want to read your batteries unplug then look at the gauge.
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Old 12-27-2017, 05:11 PM   #17
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The battery gauge will always show fully charged when plugged into shore power, if you want to read your batteries unplug then look at the gauge.
I should have mentioned the RV was unplugged. I have an extension cord run across the yard. I unplug it before storms and coil it under the RV so I don't snag it with the snow blower. I hadn't plugged it back in yet after clearing snow.
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