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Originally Posted by jola1925
Hello, I have a similar issue. We just purchased a 2012 2027(QB). It came with 2 6v batteries, but they don't seem to hold a charge.
I have driven for at least 6 hrs, plugged it into my garage (30amp outlet) for at least 36 hrs & if I unplug from the house nothing electrical works, except for the jack.
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If the jack works when you are not plugged into house power, the batteries are holding a charge.
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The switch that shows how much battery, shows nothing. I don't understand electrical but I'm thinking I should take the batteries to be charged & see how long they last.
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If the batteries are holding enough charge to run the jack, then I see no purpose in taking them away to be charged.
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I also have a few questions , if anyone can answer.
1) Will a multimeter help see battery health?
2) should I consider a home charger, (Genius5)?
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1) Yes. You don't need anything expensive. Mostly you would like to be able to measure the voltage on each battery.
2) One of the NOCO chargers wouldn't be a bad idea, but they get expensive in a hurry. I think we should figure out what the problem is first. It seems to me like the batteries are simply not connected to the TM electrical system other than the jack. That probably means that a fuse somewhere is blown, and you need to find it. In your picture, I don't see the main battery fuse that should be in that big black wire. Is it hidden somewhere in the picture?
Incidentally, the 3-19 and 4-19 stickers on the batteries tells you when they were manufactured. Your batteries are 13 years old. Batteries almost never last anywhere near that long - 4-5 years is about it, often less in an RV with electrical problems. So your batteries may have simply died of old age.
Can you tell us the manufacturer of the converter box that handles all the power? In a 2720, it is located behind the brown grille, near the floor, on the outside wall of the bathroom.
Bill