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01-11-2019, 06:56 PM
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#1
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"Formerly Diplomat Don"
Newmar Owners Club
Join Date: Apr 2005
Location: Moorpark, Ca.
Posts: 23,922
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Inverter Settings
I did a search and haven't seen any recent discussions on inverter setting. Two weeks ago I added a Magnum BMK (battery monitoring kit) to my coach. I like that the BMK can give you State of Charge (SOC) which tells you the percentage of charge, versus a battery level like 12.2 or 12.3 volts.
I noticed after a two weeks that the SOC, never reached 100%, even after sitting for a week plugged into shore power and showing that I was Float Charging. I called Magnum today thinking that I may need to check my inverter settings. Sure enough, as we went through them, they were all set to the default settings from the factory, with the exception of the battery type.
My 2019 Harris Battery Company batteries (Newmar OEM's) are rated at 210 amp hours each, which equals a bank size of (8 batteries times 210 amp hours, equals 1680 amp hours divided by 2, because they're six volts being used in a 12 volt system). That gave me a battery bank of 840 amps. My inverter was set at 400.
The Absorb Rate was set at 2.5 hours and Magnum recommended 3.5 hours. Looking at the Magnum instructions and charts, they rate battery banks by amp hour minutes, but the display uses amp hour hours. My battery bank of 840 amps falls in the center of Magnums recommendation of 180 minutes or 3.0 hours, which is where I set it.
Lastly, the Charge Rate was set at 80%. Magnum recommended the AGM's be set at 100%.
Sooooo…...You might want to check your Inverter and make sure it's setup correctly. It looks like Newmar may be leaving the inverters set at their default settings and just correcting the battery type, versus actually going through and making everything match.
The only thing I didn't set and will do tomorrow is the Low Battery cutoff.
__________________
Don & Mary
2019 Newmar Dutch Star 4018 (Freightliner)
2019 Ford Raptor
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01-11-2019, 07:22 PM
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#2
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Senior Member
Newmar Owners Club Freightliner Owners Club
Join Date: Jun 2011
Location: Texas
Posts: 6,399
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Don, you may want to look at your absorb done setting. I could never get the soc back to 100% until I set absorb done to soc.
I also set the final stage to Multi, which now works once absorb is set to soc.
__________________
2022 London Aire 4551 * 2022 GD Imagine 2800BH * 2021 RAM 3500 DRW * 2020 Wrangler
NHSO (Newmar Hoot, Sevierville Original)
Kindness Matters
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01-11-2019, 07:27 PM
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#3
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Senior Member
Newmar Owners Club Spartan Chassis
Join Date: Aug 2018
Location: Knoxville, TN
Posts: 260
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Thanks for the info, I’ll check mine tomorrow
__________________
Bill & Mary
2023 Renegade Valencia 38RB on order
2019 Jeep Cherokee Overland (Sold 2019 Newmar DS 4369)
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01-11-2019, 08:22 PM
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#4
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Senior Member
Join Date: Nov 2014
Posts: 2,515
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Don,
Did you install the ME-ARC controller with the BMK? Thanks
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01-11-2019, 08:36 PM
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#5
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Senior Member
Join Date: Oct 2014
Posts: 1,120
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I wonder if the amp hr size was set to 400 purposefully. I remember reading something about wanting to only utilize about half of the available amp hr capacity.
__________________
Phil and Laura (and Sam too!)
2024 Coachmen Beyond 22RB
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01-11-2019, 08:46 PM
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#6
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"Formerly Diplomat Don"
Newmar Owners Club
Join Date: Apr 2005
Location: Moorpark, Ca.
Posts: 23,922
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No, just the BMK.
I'm at 100% now after resetting.
__________________
Don & Mary
2019 Newmar Dutch Star 4018 (Freightliner)
2019 Ford Raptor
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01-11-2019, 09:35 PM
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#7
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Senior Member
Monaco Owners Club Workhorse Chassis Owner
Join Date: Aug 2002
Location: Clovis, CA, USA
Posts: 13,103
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That's another reason I carry five fire extinguishers. Never know when you might need one to stop a fire while they get the occupants out.
Came across a pickup truck and travel trailer that had just rolled over about 10 minutes before I got there, everybody got out OK and no fire.
__________________
2004 Monaco La Palma 36DBD, W22, 8.1, 7.1 MPG
2000 LEXUS RX300 FWD 22MPG 4020 LBS
Criticism is easier than Craftsmanship
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01-11-2019, 10:38 PM
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#8
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Senior Member
Alpine Owners Club Newmar Owners Club
Join Date: Oct 2005
Location: Fremont, Ca
Posts: 1,325
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Quote:
Originally Posted by Arch Hoagland
That's another reason I carry five fire extinguishers. Never know when you might need one to stop a fire while they get the occupants out.
Came across a pickup truck and travel trailer that had just rolled over about 10 minutes before I got there, everybody got out OK and no fire.
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???
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Jerry & Judy, Fremont, California
2017 Dutch Star 4018
Freightliner, HWH Active Air
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01-12-2019, 06:42 AM
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#9
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Member
Spartan Chassis
Join Date: Dec 2013
Posts: 80
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Great timing Don, I have replaced the remote, purchased the BMK and have had the cables made. I just haven’t found time to install the BMK. I have been researching the proper settings, especially with the added features of the upgraded remote.
Your post is a big help, thanks!
__________________
Ken and Connie
2019 DSDP 4369
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01-12-2019, 06:47 AM
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#10
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Senior Member
Newmar Owners Club Freightliner Owners Club
Join Date: Jun 2011
Location: Texas
Posts: 6,399
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Quote:
Originally Posted by Dutch Star Don
No, just the BMK.
I'm at 100% now after resetting.
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Do a rest of running it down to 90 and make sure it will recover to 100
I was having trouble there
__________________
2022 London Aire 4551 * 2022 GD Imagine 2800BH * 2021 RAM 3500 DRW * 2020 Wrangler
NHSO (Newmar Hoot, Sevierville Original)
Kindness Matters
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01-12-2019, 07:33 AM
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#11
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Senior Member
Join Date: Nov 2014
Posts: 2,515
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Quote:
Originally Posted by Johnsonk64
Great timing Don, I have replaced the remote, purchased the BMK and have had the cables made. I just haven’t found time to install the BMK. I have been researching the proper settings, especially with the added features of the upgraded remote.
Your post is a big help, thanks!
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What are the key features with the BMK and the upgraded ME-ARC?
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01-12-2019, 09:08 AM
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#12
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Senior Member
Newmar Owners Club
Join Date: Jun 2012
Location: Spicewood Texas (West of Austin)
Posts: 4,511
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Quote:
Originally Posted by Canuck53
What are the key features with the BMK and the upgraded ME-ARC?
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The BMK is like a fuel gauge for your batteries. If you install a BMK, an ARC50 is a must. The ARC gives you a lot more parameters like the ability to set your AGS to start / stop using SOC rather than voltage. It also has a lot of cool features like "battery Top Off'. If you are dry camping and you are out for dinner, visiting friends or anything else, it starts your generator to top off your batteries up to 2 hours before Quiet Time arrives. There are many other funtions with the ARC.
__________________
Scotty and Kristen, Airedales Dagny and Wyatt
2007 Newmar Mountain Aire 4528, 450 HP ISM, Allison 4000, 8 Lifeline AGM's
2019 F250 King Ranch 4x4 Powerstroke - SOLD
2022 F350 DRW King Ranch 4 x 4
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01-12-2019, 09:55 AM
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#13
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Senior Member
Join Date: Nov 2014
Posts: 2,515
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Quote:
Originally Posted by Scottybdivin
The BMK is like a fuel gauge for your batteries. If you install a BMK, an ARC50 is a must. The ARC gives you a lot more parameters like the ability to set your AGS to start / stop using SOC rather than voltage. It also has a lot of cool features like "battery Top Off'. If you are dry camping and you are out for dinner, visiting friends or anything else, it starts your generator to top off your batteries up to 2 hours before Quiet Time arrives. There are many other funtions with the ARC.
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Thanks
I’m assuming you shut power down, remove the old controller and plug in the ARC and go through the setting?
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01-12-2019, 10:03 AM
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#14
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Senior Member
Newmar Owners Club Freightliner Owners Club
Join Date: Jun 2011
Location: Texas
Posts: 6,399
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Quote:
Originally Posted by Canuck53
Thanks
I’m assuming you shut power down, remove the old controller and plug in the ARC and go through the setting?
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I swapped out the RC with arc without powering anything down. It has just a single phone cable for connection.
__________________
2022 London Aire 4551 * 2022 GD Imagine 2800BH * 2021 RAM 3500 DRW * 2020 Wrangler
NHSO (Newmar Hoot, Sevierville Original)
Kindness Matters
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