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Old 07-24-2016, 09:18 AM   #1
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Bad Batteries or bad converter???

At campground for 2 days. On shore power, 30A, with house batteries on line. All good for 36 hours until I left 4 ceiling and one 3 bulb bathroom fixture on, all 12v, for and hour or so before I noticed that the lights were going dim. Checked the battery meter and it read 8.5 volts. I thought that these lights should be powered through the converter and that the batteries would be bypassed except to charge. Am I wrong??? Maybe the 12v lights, etc., are always powered through the batteries and the converter tops off the batteries as they drain?
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Old 07-24-2016, 09:25 AM   #2
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Welcome to the best RV forum around. There will be plenty of suggestions shortly.

If you don't have a voltmeter, your really need one. They are dirt cheap and you can learn how to use them watching you tube.

Yes the converter should be charging your batteries. First, check the post you are plugged into. The breaker could have popped. If you have anything like an air conditioner running, then you can disregard that.

Check your circuit breaker panel. Cycle the breakers off and then on. Sometimes they will be tripped and not look like it.

If you can either post your model and year or add it to your signature it will help.
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Old 07-24-2016, 09:28 AM   #3
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Welcome to iRV2 .

Sorry you're here with problems .

Yes the converter/charger should be keeping up with all the 12 volt draws while you're on shore power . You have to find the C/C and check to see if it has fuses or a circuit breaker on the unit. Also check the 110 volt power panel; the C/C should be on a dedicated breaker, my C/C tripped the breaker several times before it died.
Because the battery power is so low your fridge could be in trouble too , it requires 12volts for the control panel even though you're on shore power.

EDIT: I see YC1 types faster than I do, every one types faster than I do.
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Old 07-24-2016, 09:29 AM   #4
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First it is a converter that charges the batteries, an inverter makes 120 from 12 volt. Check at the converter/inverter or converter which ever you have that it is turned on. Some have also a switch in the RV that you turn on and off the inverter as needed. Also check battery terminals for connection, but if the converter is on you should see good 12 v lot with or without battery.

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Old 07-24-2016, 09:32 AM   #5
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The converter is a battery charger. Check battery voltage without converter operating - then check battery voltage with it operating. Should see about a volt higher with the converter operating. If no change, check the 120vac input to the converter - ensure circuit breaker, etc are ok. Then check 12vdc output at the converter. If no output likely bad converter. Be sure and check for circuit breakers and fuses on the converter itself.
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Old 07-24-2016, 10:30 AM   #6
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Quote:
Originally Posted by Tdye2 View Post
At campground for 2 days. On shore power, 30A, with house batteries on line. All good for 36 hours until I left 4 ceiling and one 3 bulb bathroom fixture on, all 12v, for and hour or so before I noticed that the lights were going dim. Checked the battery meter and it read 8.5 volts. I thought that these lights should be powered through the converter and that the batteries would be bypassed except to charge. Am I wrong??? Maybe the 12v lights, etc., are always powered through the batteries and the converter tops off the batteries as they drain?
Welcome to the forum. A lot of people get this problem so that is just normal problems for RV's.

Just happened to me on my May-June trip. Came in and lights were dim. My converter quit after all these years. Mine was an Intell-Power. As a temp measure I kept my batteries charged with a high amp battery charger until I found a replacement converter in Oklahoma. Took about an hour for these old bones to replace it.

Took a long time for my Specific Gravity in the cells to come up to normal after the repair.
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Old 07-24-2016, 12:54 PM   #7
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First let me thank you all for your kind responses.😃 Last, let me apologize for being so dumb!!!😞 Got my stool, tools, lights, and courage up for the diagnosis of the converter. 😠Opened the hatch, cleared all the stuff out of the way and found it unplugged.😭 All I can say is "DUH" and "THANK Y'ALL"
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Old 07-24-2016, 03:59 PM   #8
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Quote:
Originally Posted by Tdye2 View Post
First let me thank you all for your kind responses.�� Last, let me apologize for being so dumb!!!�� Got my stool, tools, lights, and courage up for the diagnosis of the converter. ��Opened the hatch, cleared all the stuff out of the way and found it unplugged.�� All I can say is "DUH" and "THANK Y'ALL"
Don't worry about it. We all make mistakes. I've made some pretty big ones! This probably won't be your last mistake. Glad you found the problem.
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Old 07-24-2016, 04:10 PM   #9
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Quote:
Originally Posted by Tdye2 View Post
First let me thank you all for your kind responses.😃 Last, let me apologize for being so dumb!!!😞 Got my stool, tools, lights, and courage up for the diagnosis of the converter. 😠Opened the hatch, cleared all the stuff out of the way and found it unplugged.😭 All I can say is "DUH" and "THANK Y'ALL"

Glad it worked out for you.

I had very same thing on a previous coach. The 120vac input plug to the inverter had come loose. I could tell it was not the first time by the old and no longer holding black tape that was used by someone previously to try to keep it from unplugging. I plugged it back in along with putting a couple tie wraps on it - better fixed.
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