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Old 11-17-2021, 01:16 AM   #1
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Anthem Electrical Upgrade

I have a new to me 2015 Anthem 42DEQ. She is in great shape, her previous owner took great care of her. They mostly camped in RV parks, as we do a fair amount of dry camping.
Itís an age old story, the batteries barely make it thru they night.
Mine are getting near end of life, and they are actually the originals from new. Kind of impressive. Well I want to upgrade to 900 AH of LifePo4 (Lithium). Started researching and looking at my battery compartment and associated wiring.
I was a bit dismayed at the quality of the house battery wiring done by Entegra. A bit of a mess by may standards and some installation errors. Plus I didnít like how they connected the inverters to the system. The 2800 w inverter can pull some serious amps.
So first task, upgrade the house battery power distribution system in preparation for lithium batteries.
I chose to install the Victron Energy Lynx power distribution system. Itís a really slick system, that will really improve the performance of the 12 volt power system. I also had to reconfigure the battery compartment so that when the lithium batteries are installed the compartment will be sealed and insulated to ensure that the batteries donít get below freezing. It came out really well and the Cerbo GX gives me all kinds on data on the system.
I also replaced the solar controllers over the entry door with a Victron unit as well. It networks into the Victron Cerbo GX as well.
A few other goodieís, a battery disconnect switch and a solar sub panel (not pictured) with breakers to disconnect the solar if needed.
During the upgrade, I cut about 25í of excess cable out. That should cure a bit of voltage drop.
Let me know what you all think. It took about 4 days to get this done.
Here are some before and after pictures.

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Old 11-17-2021, 06:00 AM   #2
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Very nice !
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Old 11-17-2021, 06:06 AM   #3
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Nice work!
That strikes me as a professional job.
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Old 11-17-2021, 06:18 AM   #4
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Outstanding work. That will be a nice and properly done upgrade.
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Old 11-17-2021, 11:33 AM   #5
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Nice job!
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Old 11-19-2021, 12:24 PM   #6
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When I moved my batteries to the rear of the basement and put lithium in I was also shocked by the lack of quality and rats nest that was behind the battery trays.

Very nice and neat upgrade.
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Old 11-20-2021, 06:43 AM   #7
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Very nice, when is your next available appointment!!
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Old 11-20-2021, 07:27 AM   #8
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Quote:
Originally Posted by 757driver View Post
When I moved my batteries to the rear of the basement and put lithium in I was also shocked by the lack of quality and rats nest that was behind the battery trays.



Very nice and neat upgrade.


I have not installed my Lithium batteries yet. But I have noticed that my 6 yo AGM batteries are actually working much better now that each 12 volt pair has been paralleled on the bus.
I also reconfigured my battery compartment so when the lithiums come I can completely seal it and insulate the bay. I will also be monitoring the temperature of not only the batteries but the compartment. Bonus deal significant weight savings on my left side.
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Old 11-20-2021, 07:28 AM   #9
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Very nice, when is your next available appointment!!


It was a lot of fun. I was thinking I could make a business out of this.
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Old 11-21-2021, 12:28 PM   #10
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Quote:
Originally Posted by RVWheeler View Post
I have not installed my Lithium batteries yet. But I have noticed that my 6 yo AGM batteries are actually working much better now that each 12 volt pair has been paralleled on the bus.
I also reconfigured my battery compartment so when the lithiums come I can completely seal it and insulate the bay. I will also be monitoring the temperature of not only the batteries but the compartment. Bonus deal significant weight savings on my left side.
I would agree with your observations, I never did like how Entegra shared the inverter and 12v loads between the two trays.
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Old 11-21-2021, 01:13 PM   #11
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It was a lot of fun. I was thinking I could make a business out of this.
See this Entegra build team?? It's called "wire management". This is how a 6 figure coach should look!!
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Old 11-21-2021, 01:13 PM   #12
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Well done....what nice job!!

How much solar do you have on the roof to keep all those batteries charged?
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Old 11-28-2021, 09:03 AM   #13
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I’m in the process of upgrading my solar now. I would love to do a remake of my system like that. I just don’t know if I have enough knowledge of how the 2 inverters are wired to the coach. I’m guessing that they split the load to the bus somehow between the 2800 and the 2000 Magnum’s. Also, the Victron components are pricey. I bought the MPPT 150/85 charge controller and am putting up 930watts of solar.
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Old 11-28-2021, 10:33 AM   #14
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Originally Posted by Daveb26 View Post
Iím in the process of upgrading my solar now. I would love to do a remake of my system like that. I just donít know if I have enough knowledge of how the 2 inverters are wired to the coach. Iím guessing that they split the load to the bus somehow between the 2800 and the 2000 Magnumís. Also, the Victron components are pricey. I bought the MPPT 150/85 charge controller and am putting up 930watts of solar.
Dave,

Your two inverters are wired/combined together on the back wall behind your battery trays. You will see a short 3/0 cable on the right side of the inverter catastrophe fuses. It is this that combines your top and bottom battery trays into one large bank. It is balanced reasonably well from a charging/discharging perspective whether using one inverter/charger or two but when using non-inverted 12v power (lights, water pump, Aquahot etc) you will be predominantly drawing from one tray (top or bottom). Not the best solution but that is how Entegra designed it.
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