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03-27-2018, 10:47 AM
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#1
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Junior Member
Join Date: Sep 2017
Location: Branson, MO
Posts: 7
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Dc problem
We have a 2006 National tradewinds 40d. Just had a new inverter converter installed same model as old one. My house batteries are losing voltage when lights are on the more lights the faster the discharge. I am hooked to shore power. We replaced coach batteries about a month ago. The monitoring shows that we are charging at 13.5 volts. If all lights are off charges real slow. Can’t think of anything else running on 12 volts. Thinking I may need new house batteries as all systems seem to be working.
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03-27-2018, 01:08 PM
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#2
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Senior Member
Join Date: Oct 2010
Location: Duluth, MN
Posts: 415
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Inverter on? Refer on 12v? Those are a couple things to check
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03-27-2018, 01:22 PM
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#3
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Senior Member
Join Date: Nov 2015
Posts: 26,801
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I guess you meant 'inverter/charger' vs inverter converter?
How old are batteries?
Have you checked specific gravity of battery cells?
Why did you replace inverter/charger....not charging........so batteries weren't maintained..........so batteries were run to low??
How old are those batteries?
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03-28-2018, 04:56 AM
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#4
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Junior Member
Join Date: Sep 2017
Location: Branson, MO
Posts: 7
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Quote:
Originally Posted by Old-Biscuit
I guess you meant 'inverter/charger' vs inverter converter?
How old are batteries?
Have you checked specific gravity of battery cells?
Why did you replace inverter/charger....not charging........so batteries weren't maintained..........so batteries were run to low??
How old are those batteries?
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The batteries are probably 3 I think. Have not specific gravity We lost Ac inside motor home inverter was burnt. We did have all our dc the neutral was out on the ac this was 1week ago. I topped house batteries with distilled water a week ago Monday
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03-28-2018, 04:57 AM
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#5
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Junior Member
Join Date: Sep 2017
Location: Branson, MO
Posts: 7
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Quote:
Originally Posted by Drivingdaisy
The batteries are probably 3 I think. Have not specific gravity We lost Ac inside motor home inverter was burnt. We did have all our dc the neutral was out on the ac this was 1week ago. I topped house batteries with distilled water a week ago Monday
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The inverter never stopped charging
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03-28-2018, 05:57 AM
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#6
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Senior Member
Join Date: Jul 2014
Posts: 35,402
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How low is the voltage going when you say it keeps going down as you turn on lights ?
As long as it stays above 13.2 volts, all is good. The inverter/charger will always be in charge mode if your on shore or generator power. It stays in float mode to keep your batteries full.
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03-28-2018, 06:55 AM
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#7
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Senior Member
Damon Owners Club Workhorse Chassis Owner
Join Date: Mar 2009
Posts: 24,024
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Many Inverter/Chargers are programmable, you may need to make some adjustments... (the installer SHOULD have done this but.. Well not all installers are that good)
Also at least one make ships with the charger OFF, so you have to enable the chasrger.
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Home is where I park it!
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03-28-2018, 07:18 AM
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#8
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Senior Member
Monaco Owners Club
Join Date: Sep 2014
Posts: 4,569
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You really need to read the voltage at the batteries.
While on shore power many/most converters will supply sufficient DC power even without a battery.
You could use any 12VDC battery in decent condition to verify your Converter(inverter/charger) is working.
If your batteries are discharged quite a bit than you should expect to see something 14+ at the batteries from the converter.
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