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Old 02-16-2014, 07:24 PM   #127
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I may have missed this question and answer I, but have the batteries been tested? I doesn't matter if they may be new. A shorted cell will not allow a battery to keep a charge
Even new batteries go bad.
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Old 02-16-2014, 07:41 PM   #128
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Batteries were tested individually.
We're watching RV (the movie ) right now and not feeling so bad!
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Old 02-16-2014, 07:43 PM   #129
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Keep ur sense of humor. This will get better.
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Old 02-16-2014, 08:58 PM   #130
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Any ideas? I know these guys are attacking it form every angle and calling in for other's opinions, but any new ideas could be helpful!
Suggest unplugging everything and using a clamp ammeter/multimeter on the battery positive line...(assuming NOTHING else is attached to the positive post). This will show the amp drain...if it is substantial with everything turned off...start checking the wires at the distribution panel...it has to show up there from something.
If there is little drain shown...then start turning things on that you use once at a time and see the amps jump. Start with the inverter!

This is what I'm talking about in case you are not familiar. Good tool to run a lot of stuff down!

Just be sure you get one that does both AC and DC current measurements. They can be had for 50-60 bucks on Amazon...complete with instructions and accessory test leads.
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Old 02-16-2014, 08:58 PM   #131
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Lightbulb

According to your earlier post you did not say that they checked the batteries. I would not be letting anyone put a new converter in until the batteries had been checked with a hydrometer. As I stated in an earlier post. You had the batteries run down low enough so they would not power anything in your coach. The temp was below zero. My batteries and I would not imagine anyone else has batteries in a heated area so the batteries were in below zero in an uncharged state. Uncharged batteries in below zero can have one cell short. A shorted cell would look exactly like the issues you describe. Look at what is happening. Your coach battery charger is not charging the batteries. An external battery charger is not charging the batteries. what are the odds of that happening. A shorted cell would keep the voltage down and could make it look like the iverter is not working. TURN OFF YOUR BATTERY DISCONNECT if you have one or disconnect them if you do not have a disconnect. See if the batteries will charge then. I am not there but my faith in your techs is pretty low. The odds that you have a shorted cell is the number one possibility of what is wrong. Next possibility is that you have a shorted cell and that tok out your inverter. If that happened guess what is going to happen to the new inverter when they put it in. Please have them check the battery with a hydrometer or buy one yourself and check it.

PS if it is not the inverter they are not too cheap to be just changing If they do change the inverter tell them you want to keep the old one. You can send it to me and I will check it for you. If I find it is good I will send it back to you for a spare.
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Old 02-16-2014, 09:27 PM   #132
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They said you should hear the inverter fan running and you can't. They also said the light on it should be solid green, but it's slow on and off green. Any opinion on that?
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Old 02-16-2014, 10:02 PM   #133
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Deeply discharged wet cell battery in sub-zero temps....most likely outcome is a frozen battery that will cause all sorts of problems....and need to be replaced.

We had a strange one today....pretty serious air leak, could see the gauge falling below 90 psi and the compressor kicking in constantly. Pulled over at a rest stop South of Lubbock, TX and could hear a serious air leak. Long story short.....found a section of 1/4 inch air hose, to the SMI Air Force One, had been gnawed by a mouse and had let go. furry little "rat bas&$/:;()$)"

Some trips are better than others

Good luck! And hang in there!
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Old 02-16-2014, 10:17 PM   #134
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They said you should hear the inverter fan running and you can't. They also said the light on it should be solid green, but it's slow on and off green. Any opinion on that?
Hmmm - a competent technician should be able to diagnose a faulty inverter/charger in about 15min or less.

If you have a manual for your Inverter/charger it should provide you with the light codes. I recall a Trace unit with a blinking green. I think it had to be reset when in that condition. As I recall my Trace blower was controlled by a thermostat and only came on when cooling was reguired. Perhaps others who have your unit could provide more info.

Good luck.
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Old 02-17-2014, 07:10 AM   #135
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According to your earlier post you did not say that they checked the batteries. I would not be letting anyone put a new converter in until the batteries had been checked with a hydrometer. As I stated in an earlier post. You had the batteries run down low enough so they would not power anything in your coach. The temp was below zero. My batteries and I would not imagine anyone else has batteries in a heated area so the batteries were in below zero in an uncharged state. Uncharged batteries in below zero can have one cell short. A shorted cell would look exactly like the issues you describe. Look at what is happening. Your coach battery charger is not charging the batteries. An external battery charger is not charging the batteries. what are the odds of that happening. A shorted cell would keep the voltage down and could make it look like the iverter is not working. TURN OFF YOUR BATTERY DISCONNECT if you have one or disconnect them if you do not have a disconnect. See if the batteries will charge then. I am not there but my faith in your techs is pretty low. The odds that you have a shorted cell is the number one possibility of what is wrong. Next possibility is that you have a shorted cell and that tok out your inverter. If that happened guess what is going to happen to the new inverter when they put it in. Please have them check the battery with a hydrometer or buy one yourself and check it. PS if it is not the inverter they are not too cheap to be just changing If they do change the inverter tell them you want to keep the old one. You can send it to me and I will check it for you. If I find it is good I will send it back to you for a spare.
The alternator does charge the batteries, though. Does that tell you anything at all?
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Old 02-17-2014, 07:26 AM   #136
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Do you get any error or fault codes on the inverter/charger remote in the coach? I don't have my Magnum Energy inverter manual close by but if you had an inverter fault (overtemp, etc.) the techs should be seeing some sort of indicators on the remote.

At any rate, they can call the tech support guys at Magnum Energy and they can help them diagnose any issues with the inverter.
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Old 02-17-2014, 07:41 AM   #137
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From what I found a flashing green light says it is working but searching for a load which does not make sense did the batteries are discharging. I found a manual online that gives troubleshooting information as well as how to wire the batteries. Hope this is of value as I am surprised the techs are that lost on what the problem is or how to trace it.

http://www.magnumenergy.com/Literatu...%20Series).pdf

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Old 02-17-2014, 07:46 AM   #138
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Great info out of this thread. Sucks to have to do all this in the cold.
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Old 02-17-2014, 07:55 AM   #139
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Since this is your first time out with new batteries I would be suspect of the wiring on the battery bank. If your in a campground ask a neighbor if you can look at his battery bank take a picture and compare to yours. Ya I know the techs looked at it buuuut we've all made mistakes. Just a thought its easy to cross wires (don't ask how I know this).
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Old 02-17-2014, 08:35 AM   #140
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There are no error messages on the remote. I'm thinking the fault light lit up at one point in the beginning, probably when the battery was really low but I'm not sure. Haven't seen it since.
We have all the manuals so I'll supply the repair guys with them today as well as the phone number to magnum.
Thankfully, it hasn't been too cold the last few nights.
We are at a campground and will ask to check someone else's battery bank. Does it matter what kind as long as it's a newer class A?
Thanks so much for all the help
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