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Old 10-06-2015, 11:34 PM   #1
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Charging batteries, when rv parked for the season

I have a three stage converter on my motorhome, just wondering if anybody leaves they're shore power plugged during the of season, just to maintain the batteries
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Old 10-07-2015, 12:12 AM   #2
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I do, and use an oil filled heater also.
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Old 10-07-2015, 05:22 PM   #3
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Not me, for me in this part of Canada it gets down to -20-30C, battery comes out and sits on two blocks of wood in my laundry room hooked to my charger.

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Old 10-07-2015, 07:31 PM   #4
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My Mirada has been plugged in since I bought it a year ago. One of the first things I did was to retrofit the single stage converter with a 4 stage.

Upgrading converter to 4 stage | 2001 Coachmen Mirada 300QB

I checked the water in the batteries last weekend, Level is OK for both coach and chassis. I'm happy with the converter....
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Old 10-08-2015, 02:14 PM   #5
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I have for many years. Even on my old Class C. I just keep an eye on the water levels and fill when necessary. No problems so far for the last 10 or so years of doing this. I live in South East Michigan.

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Old 10-08-2015, 02:54 PM   #6
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If you fully charge your battery...it will not freeze until -90 degrees. No need to store inside. Good to -16 degrees even if it is 60% charged. I fully charged battery will lose about 5% of charge / month in cold weather.
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Old 10-08-2015, 03:55 PM   #7
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Like Hatchet19 said, I keep mine plugged in all the time, just watch the water level. I've had a battery minder for about 10 years, replaces the normal battery plugs with an attachment that is attached to a rubber bulb that you use to fill the water from a bottle of distilled water. This way you don't have to keep taking the plugs out to check and fill the water. Just pump the bulb until you can pump any more.
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Old 10-08-2015, 04:12 PM   #8
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Quote:
Originally Posted by capitan View Post
I have a three stage converter on my motorhome, just wondering if anybody leaves they're shore power plugged during the of season, just to maintain the batteries
I think our converter is basically a two-stage converter.
Original equipment by IOTA. Well for $20 on EBay I got their external plug. In that turns it in to a 4 phase charge controller. Jeez I bet that could have been in the unit originally for about $3 more. No needed often because of my solar but, hey now it is top flight. So I did it.
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Old 10-09-2015, 09:37 AM   #9
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Do you fill with distilled water, tap water, or acid when the level becomes low? My battery is far too heavy to move indoors, plus I don't want a charging battery inside the house. I will be leaving it on the trailer and pluggfing into the garage outlet through the cold weather.
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Old 10-09-2015, 09:42 AM   #10
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Always distilled water.

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