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Old 11-29-2015, 03:33 PM   #1
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Inverter help needed

I had a 12 volt battery go bad and upon replacing the battery I now get 12.2 v instead of the normal 13.4. Looked up the doc for trailer and it does not match what is installed.

I have AIRPX DIMENSONSIONS E100666 with a number 337751 assume serial number.

Not finding any thing like that on the web.

Anybody got clue as to what I am dealing with?
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Old 11-29-2015, 03:48 PM   #2
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Are you talking about an INverter or a CONverter?
All RVs come with a CONVERTER, but few come with an INVERTER.
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Old 11-29-2015, 03:54 PM   #3
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Another fine senor moment it is a converter. Thanks
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Old 11-29-2015, 05:12 PM   #4
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I did some searching and found AIRPAX DIMENSIONS inverters. Note the spelling difference. They are or were part of Magnum Dimensions. These are inverters, not converters.

How many batteries do you have?
Are you sure all batteries are fully charged?
Is the trailer plugged into 120V AC electric?

Is there an On/Off switch on the "device". If yes, turn it off and check the battery voltage again.

If this is an inverter, it draws power from the batteries and will cause a lower voltage measurement at the batteries.

If it is a converter, it supplies power to the batteries and will increase voltage at the batteries, such as the 13.4V you mentioned.

Look around for another box, that might be a converter. Maybe it has gone bad or blew a fuse and is not operating. Check the circuit breaker box, maybe the circuit breaker for the converter is off.
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Old 11-29-2015, 05:27 PM   #5
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I'm just guessing now as there isn't enough info to go on:

First, I need to guess that you are referring to "AIRPAX DIMENSIONS". If that's the case, they make mainly inverters and very few, if any, converters.

I'm guessing the E100666 isn't the model number as there is a UL File by that name. One of their inverter manuals state "NOTE: These products are Listed to applicable UL Standards (UL458) and requirements by Underwriters Laboratories Inc., File E100666. ......."

They also state they have "8 brand names we own, manufacture and sell under: Sensata, Airpax, Klixon, DeltaTech, Magnum-Dimensions, Qinex, Schrader, Sensor-NITE"

So it is possible you do have an inverter, especially if you have a motorhome. If that's the case, 12.2 volts to the inverter would be possible, depending if the MH is plugged into shore power, and also depending on the inverter load.

Like I said, "a whole lot of guessing going on". I need the correct manufacturer name and correct model number in order to help.
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Old 11-29-2015, 06:27 PM   #6
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Quote:
Originally Posted by retiredtechnician View Post
So it is possible you do have an inverter, especially if you have a motorhome. If that's the case, 12.2 volts to the inverter would be possible, depending if the MH is plugged into shore power, and also depending on the inverter load.
The OP stated it's a trailer plus he posted this in the Cedar Creek section, which is a 5th wheel.
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Old 11-29-2015, 06:34 PM   #7
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Quote:
Originally Posted by bikendan View Post
The OP stated it's a trailer plus he posted this in the Cedar Creek section, which is a 5th wheel.
Thanks for the info. Like I said, "a whole lot of guessing going on". Some TT and 5th wheels do have inverters; in fact, our last 5th wheel had an inverter. Without any more info, it's pretty difficult to tell, but I'm still "guessing" what he's looking at is an inverter.
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Old 11-30-2015, 09:31 AM   #8
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OK now I have an idea as to what answers are needed.
5th wheel
1 Battery
it is a 800 watt inverter
ADI-12w8r3t 15 AMP
Shore power is 124 on both legs


Looked at web but did not find info I could use


With and external charger it set at 13.2 remove the charger and it starts dropping right away.


Any and all opinions are appreciated. THANKs
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Old 11-30-2015, 09:35 AM   #9
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Also this is the second new Battery and tested good at install.
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Old 11-30-2015, 09:48 AM   #10
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Quote:
Originally Posted by jwakeman View Post
OK now I have an idea as to what answers are needed.
5th wheel
1 Battery
it is a 800 watt inverter
ADI-12w8r3t 15 AMP
Shore power is 124 on both legs


Looked at web but did not find info I could use


With and external charger it set at 13.2 remove the charger and it starts dropping right away.


Any and all opinions are appreciated. THANKs
A picture would help!

Now I am going to guess as to what you are looking at!. When you open the service door to the battery; there is a electrical device above the battery on a shelve with a display; correct?

If so this is an inverter and will use the battery energy to provide 110/120V electrical power to a component on the camper. Such as the residential refrigerator. This is drawing power from the battery and over time will lower the battery voltage until the battery can not supply voltage and power.

The converter is store behind a sliding door in the basement curb side (at least on my unit) and will convert 110/120 volts to 12 volt system to charge the battery and provide electrical power to 12V components in the trailer such as lights and furnace. The trailer will need to be connected to shore power for the converter to work.

When I am connected to shore power I turn the inverter off.
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