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Old 11-30-2015, 09:53 AM   #11
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I only run my inverter when I need to use the residential refrigerator to keep it cold. All other times the inverter is off since the fan and display will draw energy from the battery.
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Old 11-30-2015, 09:54 AM   #12
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Except for road time I am on shore power all the time and have not turned inverter off for 4 years. If the inverter is off how does the battery get recharged?
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Old 11-30-2015, 09:56 AM   #13
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Inverter doesn't charge battery, converter charges battery!
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Old 11-30-2015, 10:01 AM   #14
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Quote:
Originally Posted by jwakeman View Post
Except for road time I am on shore power all the time and have not turned inverter off for 4 years. If the inverter is off how does the battery get recharged?
Did you see my first post right before this one?
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Old 11-30-2015, 10:10 AM   #15
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yes I did, but every thing I find says I am a inverter/charger.
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Old 11-30-2015, 10:50 AM   #16
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An inverter receives 12v DC power FROM the battery and converts it to 120v AC. A converter receives 120v AC power and converts it to 12V DC and charges the battery. The converter usually lies behind the fuse panel on most TT's and 5er's. The inverter is generally located near the 12V battery source. I mention this, because the info we are getting is somewhat confusing. An Inverter has no way of charging a battery, since it runs off 12v dc power and doesn't produce it. If you're not getting proper voltage to battery, the converter may be going bad. Pull a cable from the battery and measure the voltage going to the battery (while plugged into shore power). If voltage is low, the converter is starting to fail.
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Old 11-30-2015, 11:15 AM   #17
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Thanks for the clarification I will do some more research.
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Old 11-30-2015, 11:43 AM   #18
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Xantrex (maybe others) does make an inverter/charger that replaces the typical converter. This is probably what you have in your unit.
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Old 11-30-2015, 11:48 AM   #19
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Quote:
Originally Posted by jwakeman View Post
yes I did, but every thing I find says I am a inverter/charger.
Don't let the terminology (label) confuse the issue, there is such a thing as an inverter/charger if wired as an inverter (12 volts in 120 volts out) it is operating as an inverter. If wired with 120 volts in and 12 volts out it is operating as a charger, it does not do both at the same time unless it also has auto switches with it so it can switch over when shore power is connected or you are getting 110 v from a generator so it sounds to me like yours is set up as an inverter for the fridge.

Look for the converter and test it's output to the battery with the inverter shut off. The converter is usually set up and looks like it is part of the electrical station (where fuses and breakers are).
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Old 11-30-2015, 12:13 PM   #20
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From what I can tell, there is no Airpax Dimensions Inverter/Charger, they only seem to make inverters and there is an 800 watt model. As such, I would bet that you have a separate converter (battery charger) somewhere else in the TT. SInce you put a new battery in and are only reading 12.2 volts, the converter is either off or malfunctioning. When you put a charger on, the voltage rises to 13.3 or so and that is what your converter should be doing. You need to find it and figure out what is up with it. It will be a box that has a line cord and probably a fan, a heavy ground and a red and black terminal with some heavy wires coming out that go to your battery. Lots of brands including Progressive Dynamics, and the like. The reason it is not called a charger is that it converts 120 volts AC to 12 volts DC. This charges your battery and also powers everything in the TT when on shore power.
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