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M380 (Unique Issues) If you have a unique issue with your M380 model coach and it can't be answered in one of the other forums here, then this is where you can list it.....list your M380 Parts here too.

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  #1  
Old 12-20-2019
mikeocd mikeocd is offline
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Default Boondocking experts please

Anyone out there who does alot of dry camping with 8d gel batteries? IMO i should be able to run alot more with these batteries than i currently am. I believe the remote lcd is what is confusing me. The batteries (3) are rated at 225ah, the manual for the remote says to set the inverter to battery capacity which i would presume is around 125 x 8, or set it on auto and after 15 to 20 cycles (is a cycle the charge or the draw or both) it will discover the battery cappacity on its own. Also when on auto the buzzer goes off at 49% which i realize that the batteries should never go below that, when not on auto they go all the way down to as low as 20%. To be specific, last night went to bed with 2 phones charging 1 tv on and 1 small fan, nothing else i even shut most circuit breakers off, woke up at 8 and was at 29%. Batteries were bought in Feb 2019. Any wisdom would be appreciated as I believe the settings on the remote are in the wrong positions.
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Old 12-20-2019
al perna al perna is offline
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Mike , I'm no expert but I do lots of dry camping . I would ask why if your batteries were that low did your generator not start. I also know batteries have a life span and to bring them down below 50% really takes some life out of them, but you know that . Lets hope its a setting issue and when our solar west coast woggers wake up they chime in with some good news.
Be ready for Putz to tell you how you should have gone with flooded lead acid batteries , lol
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Old 12-20-2019
badandy badandy is online now
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Is it cold where you are?
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Old 12-20-2019
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irmagoo irmagoo is offline
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Quote:
Originally Posted by badandy View Post
Is it cold where you are?
wheres it warm andy we're look'n! !
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Old 12-20-2019
badandy badandy is online now
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It's supposed to get to 40 here, nice!

The batteries lose a lot of capacity if it's near freezing or lower, that's all I was going to say.
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Old 12-20-2019
mikeocd mikeocd is offline
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I boondock in Key West.....been here 3 weeks
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Old 12-20-2019
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Quote:
Originally Posted by mikeocd View Post
Anyone out there who does alot of dry camping with 8d gel batteries? IMO i should be able to run alot more with these batteries than i currently am. I believe the remote lcd is what is confusing me. The batteries (3) are rated at 225ah, the manual for the remote says to set the inverter to battery capacity which i would presume is around 125 x 8... Batteries were bought in Feb 2019. Any wisdom would be appreciated as I believe the settings on the remote are in the wrong positions.
We spend about 90% of the time off-the-cord.

If your M380 has not been modified, it uses three 4D coach batteries not 8D’s. 4D’s vary with brand, but are commonly 200-215 Ah for each battery for a total of around 600 Ah’s of total coach capacity at 12V. You say your batteries are 225 Ah each and we know they’re wired parallel, so theoretically you have 675 Ah of total coach battery capacity. That sounds high to me but maybe it’s correct. If you are telling the system you’ve got 8x125 or 1000 Ah of capacity, that’s part of your problem. Whether you have the original Trace inverter/charger or has it been upgraded to a Magnum or Xantrex, you need to first tell the charger what you’ve really got - 675 Ah not 1000 Ah. Once you do that, it should give you an accurate pack SOC %. Then to reduce overnight drawdown you will then need to systematically turn OFF all unnecessary AND phantom draw items when you go to bed. Here is a list to look at:
  • Hurricane electric heater - there is a CB in the back that powers an electric coil inside the Hurricane to reduce burner cycles. Most M380 owners have turned this OFF with the CB in the back closet
  • Hurricane itself - if you don’t need it overnight, turn it completely OFF (wait for clearing cycle to complete before turning the power OFF). You can tell it’s OFF because there will be no scrolling message on the kitchen H control panel
  • Unplug all electronics - simply turning them OFF doesn’t eliminate their phantom loads. I put most of my electronics in the front overhead on a switched multi-outlet bar. A flip of that switch and most of my energy suckers will be turned OFF
  • The microwave - I installed a paddle light switch in the upper cabinet that controls the outlet than our microwave is plugged into
  • Make sure the InstaHot is turned OFF
  • Slide “computers” - they are plugged into a ceiling outlet on the left side of the big pass-thru bay. I installed a simple inline switch to shut them down. Be advised, some think keeping them ON all the time in wet/humid climates extends electronic board lifespans
  • Research the WOG about the right hand electric relay in the compartment under the drivers window. It sucks allot of juice and is typically hot to the touch. It’s only purpose is to control power for the slide. I put in a switch there and turn it OFF when boondocking. A few have bypassed it entirely
  • Verify your 3-way electric refer is on LP not Auto or Electric
  • Verify that your battery temperature sensor is actually attached to the first negative terminal inside your plastic battery “tub”. When I removed mine to do my “All Electric M380” mod, I was surprise that someone had simply rolled up the sensor lead in inside the case without hooking it up. As Andy says, your inverter/charger varies it’s battery charging profile based on battery temperature.

The above list and ideas should get you started.
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Last edited by NoGas; 12-20-2019 at 07:38 PM.
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