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Old 05-25-2015, 11:55 AM   #1
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Charging six volt RV batteries

Have a 04 damon mh that has two 6 volt batteries, never had 6 volt before so my question is how long should it take to charge the two using a standard 12/6 volt charger? they were down so I put the charger on a day ago and it still shows only 40 % charged...the cells are wet and the batteries are pretty new...does a six volt charger take longer to charge than a standard 12 volt battery? thanks for advice. robert.

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Old 05-25-2015, 12:08 PM   #2
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Two six volt batteries connected in series become essentially a 12 volt battery which would be charged with a 12 volt charger.

If you plug the motorhome into shore power the inboard converter/charger should charge your house batteries appropriately.

2013 Leisure Travel Vans Unity U24MB, 635 watts solar, 440 AH batteries, 2000 watt inverter, Koni struts and shocks, Hellwig rear anti-swaybar, SumoSprings front and back, 2012 Hyundai Accent SE, Blue Ox baseplates, Aladdin towbar and Patriot
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Old 05-25-2015, 01:55 PM   #3
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I am fond of saying "There are no six volt batteries in RVs" Even though like you I have a pair.

The reason is that though they are six volt batteries sitting on the ground, or bench or shelf at the dealer.. once they are put in your (or my) RV and that jumpr wire connects them magic happens.

They become a single 12 volt battery (Roughly a 4D or 8D size electrically).

Treat the pair as two halves of a single 12 volt battery.

What does this mean:
Can I _______... Could you _____ with half of a 12 volt battery?

(Replace just one... Have two DIFFERENT age/brand/size/et-al)

Always treat treat the pair as a single unit 12 volt 220 amp hours give or take a bit..
Home is where I park it!
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Old 05-25-2015, 02:03 PM   #4
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As mentioned, they should and most likely are wired so they make up 12 volts. Have you plugged your coach into shore power at all to see if they charge? If they have been drained and left that way then they may be damaged and not be able to take a charge. I hope you are not trying to charge with a 6 volt charger, I have never even seen one. Good luck and keep us updated.
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Old 05-25-2015, 02:07 PM   #5
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For some light reading google "The 12 volt side of life" They explain a lot.
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batteries, charging

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