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Old 09-26-2018, 03:56 PM   #1
Join Date: Aug 2017
Posts: 60
House Batteries and Power Converter

Hello All,

My power converter seems to be running frequently while being stored and plugged into shore power. It never used to do this before. I recently bought 2 new golf cart batteries (6v each) from Costco, and they have been working great. The issue strangely started occurring after I installed these new batteries.

I tested the output on the batteries and I am getting 6.8v DC. This was having the multimeter on the red prong of one battery and the black prong on the other battery. Is this normal? Shouldn't I be getting 12v? Could this be the cause of the power converter frequently running?

As a side note, I opened the batteries to check the water levels. I heard a bit of gurgling, but the water level was normal. Is this normal ?
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Old 09-26-2018, 04:11 PM   #2
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Ford Super Duty Owner
Join Date: Dec 2010
Posts: 1,696
Yes you should be getting 12 volts if measuring both batteries. They should be connected in series, the red cable goes to one positive post, a wire goes between the negative post of that battery to the positive post of the second, and the black cable goes to the negative post of the second battery.
Scott Brownstein
Palm Island, Florida
2015 Georgetown 335DS
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Old 09-26-2018, 04:32 PM   #3
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Yes, measure the positive of one battery to the negative of the other.

Use the cables that go away from the batteries, not the short jumper between the two.

You may see 13.6 volts measuring them that way, ( 6.8 +2 ) and that may be a bit high, long term.

You may have a converter/charger that holds a high float voltage. The best thing to do is replace it with a more modern 3 or 4 stage converter.

I just picked up a 2017 MH and found that its stock converter/charger was overcharging the batteries.

I pulled it out and installed a Power Max 55, 4 stage converter/charger. It now float charges at comfortable 13.2 volts.
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batteries, converter, house batteries, power

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