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Old 07-05-2014, 04:36 PM   #1
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Balky battery monitor....

Well....I finally got around to doing the hard reset on my newly installed Magnum Remote and battery monitor. The numbers are a bit more believable now, but it still looks like it is out of kilter. I head back to the shop in a couple months and this is not a show stopper.....so I will just be aware of battery voltages for now. My new Lifelines are performing FANTASTICALLY. The strange thing now is that I have not seen a single amphr from my solar panel for a month now. Been plugged in most of the time, but it is a bit out of the ordinary to see zero input. Maybe those new batteries are not asking to be charged as much now. Will watch it all just the same.


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Old 07-05-2014, 06:54 PM   #2
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Might want to unplug it and run a TV or frig to see if the solar is working.
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Old 07-05-2014, 07:08 PM   #3
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Will try the refrigerator drain in a few days. Gonna give the SOC a chance to stop "Thinkn"...... I did just look at amphrs in on the charge from my shutdown time today. It indicated 470 amphrs input. Yeah right. Double my battery capacity? I don't think so. BTW... I definitely fall into the school of thought that it is much easier to drop the back panel to access the power systems, versus removing the couch. It took me about 30 minutes to get in there, do the reset, and put it back together. Looks like I will be spending more time in there when we get back home......ugh!


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Old 07-05-2014, 10:10 PM   #4
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I had one in 'thinkn' mode for a week before it decided to start reading.

Are you sure that the polarity of the twisted orange/blue shunt wire is connected to the proper shunt terminals with the polarity correct?
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Old 07-05-2014, 10:19 PM   #5
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Lewster...I will check before I call Magnum for help.


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Old 07-06-2014, 12:17 AM   #6
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I had one in 'thinkn' mode for a week before it decided to start reading.

Are you sure that the polarity of the twisted orange/blue shunt wire is connected to the proper shunt terminals with the polarity correct?
Sorry for the redundancy! It has been a long day and I wasn't 'thinkn' too well myself.
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Old 07-06-2014, 06:27 PM   #7
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If weather permits at my location tomorrow, I will pull the panel again to check the twisted pair wiring. Also peeking at solar hookups since it seems to have gone silent on me. Sure wish I had a battery disconnect in this baby. Do not like pulling that 200 amp fuse on a hot line......
Also contacted Magnum tech support to see if they have any additional advice.



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Old 07-07-2014, 09:06 AM   #8
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I upgraded my 2011 Interstate with the Magnum MMS1012, the ME-BNK battery monitor kit, the ME-RC remote and the temperature sensor.

I obtained my MMS1012 from Airstream while waiting around at their facility. Their cost was cheaper by about $100.00 or more than anywhere else. I doubt you could buy one from a dealer at the same cost because the dealer will probably sell it for MSRP.

In any event, it did not come with the temperature sensor, which costs another $30 or so. They apparently buy them in bulk as an OEM as it had no instructions either.

Installation was a bit tricky because I wanted to place the ME-BNK to covers all loads, which meant placing it inside the battery compartment. There was plenty of room to do so, but it was tedious running the cables and mounting it inside the box. The MMS1012 unit mounted in the same location that Airstream started mounting them in the fall of 2012 when they started using these units. The ME-BNK was placed just below it on the floor.

The install was straigthforward except for the ME-BNK. The MMS1012 comes with two ports-one for "Remote" and the second for "Accessories". The instructions refer to plugging the RJ-11 from the ME-BNK to the "Network" port. There is no such labeled port on the MMS1012, so I presumed the "Accesories" port was the port it needed to be plugged in to. After a few failed communications tests, I tried using the supplied duplex adapter to the "Remote" port, and it worked. So a heads up to anyone that the "Network" port and the "Remote" port are one and the same on the MMS1012.

The ME-BNK worked flawlessly, first placing a float charge, and doing it's "Think'n" thing, until the full charge was reached and then went in standby mode.

Finally, a heads up with anyone who has an Interstate that does not fully charge the batteries while driving down the road, or if the house battery is not being keep fully charged while plugged in to AC. Check the connections at the chassis battery compartment and the isolator. The battery isolator has one red cable the runs to a connector that is placed next to the positive side on a black bus in that compartment. You have to remove a bolt to remove the bus. There are about 4 or 5 connections there. Check the bolts for tightness. My Interstate would not charge while driving-and it was a loose bolt on the connection on the bus that was the issue. I also noticed that the battery connections on the house batteries were only hand tight. I suspect that's the way they've always been. While I did the ME-BNK install I removed the top battery to inspect it (no easy feat for a guy who had rotator cuff surgery two months ago). Airstream figured out the battery box's poor design in the lounge models and changed it in later models so it will be easier to check for those that own later model Interstates.
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Old 07-07-2014, 10:17 AM   #9
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Help: where do I start to get this fixed? Others have noted my disappointment of < 12 hrs battery, but this AM takes the cake.

Been plugged into 30 Amp for three months, only operating fridge and fan on occasional says to air out van.

Pulled out this AM for 7 day trip and house battery dropped from 14.1v on 30amp to 10.1 when unplugged.

Totally frustrated.




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Old 07-07-2014, 10:21 AM   #10
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Help: where do I start to get this fixed? Others have noted my disappointment of < 12 hrs battery, but this AM takes the cake.

Been plugged into 30 Amp for three months, only operating fridge and fan on occasional says to air out van.

Pulled out this AM for 7 day trip and house battery dropped from 14.1v on 30amp to 10.1 when unplugged.

Totally frustrated.

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Sorry to say it but it sounds to me like your house batteries are toast!
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Old 07-07-2014, 10:49 AM   #11
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AGREED! Your batteries are clearly not holding charge. I would get back to the dealer ASAP and have the batteries replaced. Many have had problems with dealers leaving new units on their lot with discharged batteries for extended periods, which is a great way to sulphate the batteries and ruin their charge retention capacity.

BTW, this is a dealer issue and NOT a battery warranty issue, as it has everything to do with neglect, which is not covered by warranty.
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Old 07-07-2014, 11:17 AM   #12
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I think it could and likely is another issue rather than the batteries such as poor connections, bad transfer switch, or just plain old mis-wiring. While I was waiting around Jackson Center, at least one 2014 model owner brought his new unit in for repair with electrical issues. One problem they found was a bad transfer switch that was keeping the batteries from getting a charge and the second was a mis-wired battery meter that was causing some sort of electrical cutout issue. My bet is that the batteries are not the issue, rather, if history is any indication, the transfer switch is bad or something is not wired correctly and the batteries are not getting the proper charge, even though they say they are fully charged when connected to AC, when in reality, they are not getting a charge at all-or a full charge. While I agree it could be the batteries, my money is that it is likely something else that was not done correctly when the unit was produced.

Take it to a dealer. They should be able to confirm the batteries are either good or bad or that the wiring is in fact the issue. Please let us know the outcome.


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AGREED! Your batteries are clearly not holding charge. I would get back to the dealer ASAP and have the batteries replaced. Many have had problems with dealers leaving new units on their lot with discharged batteries for extended periods, which is a great way to sulphate the batteries and ruin their charge retention capacity.

BTW, this is a dealer issue and NOT a battery warranty issue, as it has everything to do with neglect, which is not covered by warranty.
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Old 07-07-2014, 12:12 PM   #13
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That is what I was afraid of; 4.5 hour one way trip to dealer - and I've had the vehicle just over a year now so I'm not sure how Dave Arbogast RV will feel about replacing them. I was hoping of a better way to resolve this than a camping trip to Troy, Ohio.

It has been an issue since my first outing, but I run the generator, and hope for better luck next time. I don't think they ever lasted more than 24-36 hrs. (mostly just fridge & interior lights - maybe an hour of TV)

Anyone know of a battery tech line or anything I can call to walk me thru troubleshooting before 9 hour road trip & a tech telling me that I need new batteries?
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Old 07-07-2014, 01:31 PM   #14
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That is what I was afraid of; 4.5 hour one way trip to dealer - and I've had the vehicle just over a year now so I'm not sure how Dave Arbogast RV will feel about replacing them. I was hoping of a better way to resolve this than a camping trip to Troy, Ohio.

It has been an issue since my first outing, but I run the generator, and hope for better luck next time. I don't think they ever lasted more than 24-36 hrs. (mostly just fridge & interior lights - maybe an hour of TV)

Anyone know of a battery tech line or anything I can call to walk me thru troubleshooting before 9 hour road trip & a tech telling me that I need new batteries?
If you have Lifeline AGM batteries, their number is 1-909-599-0596
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