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Old 06-15-2019, 01:55 PM   #1
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Batteries overcharging when on shore power

Plugged in and found that our batteries charged up over 15 volts so we disconnected and headed to a dealer in Salt Lake who told us everything was fine. Called Go Power who said because the charge returned to normal range when we unplugged, it was probably a faulty converter. We are getting by now by activating the battery disconnect switch prior to hooking up to shore power. The converter appears to be supplying appropriate 12v to the systems requiring that voltage while giving us what appears to be ok 110v power. Thoughts?
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Old 06-15-2019, 03:22 PM   #2
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the converter doesn't supply 110V, that comes from the shore power (unless ou have an inverter and are using it). the converter takes the 110V shore power, and generates battery charging and system voltage, which is typically around 13.6-14.4V
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Old 06-15-2019, 03:29 PM   #3
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How are you taking measurements?

If you have the dual 6 volt Interstate batteries the recommended charge rate is 15.4 volts.

You mention shore power, the WFCO seems to peak out at 13.8 volts. I doubt it is that, unless it has failed.

Then you mention the GoPower, which is solar, that has an adjustable charge voltage so it could be any number within its range.

Provide more information on the products you are using.
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Old 06-15-2019, 05:54 PM   #4
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Quote:
Originally Posted by fudge_brownie View Post
How are you taking measurements?

If you have the dual 6 volt Interstate batteries the recommended charge rate is 15.4 volts.

You mention shore power, the WFCO seems to peak out at 13.8 volts. I doubt it is that, unless it has failed.

Then you mention the GoPower, which is solar, that has an adjustable charge voltage so it could be any number within its range.

Provide more information on the products you are using.
I didn't think the charge rate was that high. Interesting. The "measurements" we are taking is from the 160w Go Power panel. I think that reading is the actual charge on the batteries, not thc charge rate, correct? Graduated from Beloit in 73, BTW (In Philosophy not hard science as you may have surmised)
Thanks for your response.
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Old 06-15-2019, 06:14 PM   #5
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Beloit has changed, I think dramatically, since your days. All for the good. Having ABC Supply based in the city and one of the richest women in the US, Diane Hendricks, has brought new lodging and dining. It is our go to place for good eating.

I would guess that the GoPower is displaying the power currently being applied to the batteries, assuming the solar panels are in the sun and operable. Once the sun goes down the display voltage should drop, the time to get the proper measurement would be in the morning before the sun comes out. Full batteries would display 12.73. For a table of lesser voltages Google "Interstate State of Charge".
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