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Old 07-25-2015, 05:18 AM   #1
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Maintaining Battery Charge

I have what may be a dumb newbie question for all of the more experienced and knowlegable RV'rs out there. If you don't have access to a 30 amp plug in at your home how do you keep and maintain a charge for your RV batteries? Thank you all in advance for any help and guidance you can provide.

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Old 07-25-2015, 05:23 AM   #2
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Im plugged into a regular 15 amp plug. This keeps the house batteries charged and food in the fridge cold. I put the chassis batteries on an external battery charger as needed from time to time as they dont get charged from shore power.

2008 Holiday Rambler Vacationer 340 Cummins
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Old 07-25-2015, 05:32 AM   #3
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I do the same as Monacoach, except I don't always have great success when the MH is plugged into a GFCI. Something in the MH seems to trip it.
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Old 07-25-2015, 05:39 AM   #4
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Where ever the coach is plugged in, I just use this small solar panel that I attach to the front grill of my coach and connect it to the chassis battery.
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Old 07-26-2015, 10:57 AM   #5
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I use an adapter from the 30A plug to a 20A regular plug and plug it into an extension cord and then into an outlet in the garage. That will (in my case) charge the batteries from shore power, allow me to run the A/C, ceiling fan, etc., including the ridge. The 20A circuit is just adequate for the minimum power requirements - no TV (or TV and no A/C), no microwave - just charging the batteries and keeping the fridge cold. If it runs the A/C, all the better, but it may take some power management to get things that you want, i.e., turn off the A/C so you can use the microwave and vice versa. If your rig doesn't have the adapter, they can be found at the camping parts places, Home Depot, Walmart, etc. I know of no rig that doesn't charge the batteries while on shore power.

That is the scenario when parked in the street getting ready to go. When parked in the yard I have a 30A circuit that I trenched in to the parking area and I leave it plugged in 24/7, with everything off - it keeps the batteries charged and a fan running to keep the humidity at bay. When I go out to the trailer to get it ready or whatever I turn on the A/C and whatever else for comfort while I'm out there.

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Old 07-28-2015, 02:01 AM   #6
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You need this:

Camco 55223

15 Amps would be enough for most things except A/C.

A lot of parks I visit only have 15 amp service (the standard residential plug) so this is a must-have item.
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Old 07-28-2015, 07:00 AM   #7
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If you're looking to do a cool modification, put a solar panel on your roof. We ordered ours as a factory option but they make kits to add. While 160 watts isn't enough to run the trailer, it does a great job of keeping our 2 6V batteries charged at home and helps replenish them while dry camping.
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Old 07-28-2015, 07:43 AM   #8
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Perhaps a better way to maintain the batteries is to use something like this


I use this on my fifth wheel with two batteries and my motorcycles. Maintains and conditions your batteries.
Using the trailer converter will provide a constant charge but never conditions the batteries. Plus you we running and expensive converter instead of a cheap battery tender
My batteries are always fully charged
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Old 07-28-2015, 11:14 AM   #9
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This thing about these maintenance chargers supposedly "conditioning" the battery is a bunch of BS. Won't do any different than the solar charger. And if you are boondocking that solar charger is a life saver!

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