2016 Roadtrek CS Adventurous electrical and solar rebuild

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Original Member Title: Rebuilt Electrical on 2016 Roadtrek CS Adveurous
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A member described rebuilding the electrical system on a used 2016 Roadtrek CS after discovering the supposedly new 12V AGM batteries were actually 6V lead-acid batteries that failed after a long trip. The rebuild included removing much of the old wiring, outlets, and components, relocating equipment under the rear bed, installing Victron components with a 460 AH Epoch battery, rewiring alternator charging, and reworking the solar array with two 75W panels and two 100W panels for improved...
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TomofBend

Member
Joined
Oct 23, 2025
Posts
12
Location
Bend, Oregon
Another user thought I should post about my electrical rebuild on my 2016 Roadtrek. Long story but I bought it used a year ago and was told it had brand new AGM 12v batteries. I checked and verified everything else but that. Turns out they were 6v lead acid batteries. They ended up cooked shortly after I purchased it after our first long trip. After a ton of research and months of contemplation, I decided to rebuild the electrical system and pulled out most of the wiring, and components, and the outlets, including the 12v cigarette type outlets. Ran all new wire from the alternator and pulled the old batteries out. Moved all components to the rear under the bed. Bought all Victron components and a 460 AH Epoch battery. Pictures attached. The new system is actually amazing and have now been on several trips with no issues. I also redid the solar panel system. It was wired in series limiting everything to the smallest panel, 35 W. Kept two 75W panels and added two 100W panels. Wired each of those in series to each other and then parallel for 200W and 150W coming into my solar controller. Way better charging to the battery covering less roof space. I did all the work myself but had it inspected before I turned it all on. Very happy with it, and all in I spent about $5k. Happy to answer any questions and hopefully useful to some of you.
 

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Looks great. I had replaced my inverter and batteries on my 2016 CS. Unfortunately this was done on an emergency basis with essentially in kind KS2 equipment. Did you consider adding ventilation, I have the inverter under the my rear seat/bed could likely use better heat removal.
 
I did add ventilation fans, not just for heat removal but better circulation. It’s made a huge difference in heating and cooling efficiency as well. I added 7 fans in total with variable speed control. I also added a curtain at the foot of the bed. In the winter it really helps keep the heat in the sleeping area. Used it in -14 degrees and we were snug as a bug.
 
Another user thought I should post about my electrical rebuild on my 2016 Roadtrek. Long story but I bought it used a year ago and was told it had brand new AGM 12v batteries. I checked and verified everything else but that. Turns out they were 6v lead acid batteries. They ended up cooked shortly after I purchased it after our first long trip. After a ton of research and months of contemplation, I decided to rebuild the electrical system and pulled out most of the wiring, and components, and the outlets, including the 12v cigarette type outlets. Ran all new wire from the alternator and pulled the old batteries out. Moved all components to the rear under the bed. Bought all Victron components and a 460 AH Epoch battery. Pictures attached. The new system is actually amazing and have now been on several trips with no issues. I also redid the solar panel system. It was wired in series limiting everything to the smallest panel, 35 W. Kept two 75W panels and added two 100W panels. Wired each of those in series to each other and then parallel for 200W and 150W coming into my solar controller. Way better charging to the battery covering less roof space. I did all the work myself but had it inspected before I turned it all on. Very happy with it, and all in I spent about $5k. Happy to answer any questions and hopefully useful to some of you.

I have a 2014 CS Adveurous and have been thinking that I wanted to do the same thing. If possible can you post the Victron components that you used. Did you replace the extra engine alternator or use a DC-DC Charger to charge batteries went driving?
 
I have a 2014 CS Adveurous and have been thinking that I wanted to do the same thing. If possible can you post the Victron components that you used. Did you replace the extra engine alternator or use a DC-DC Charger to charge batteries went driving?
Multiplus 12/3000/120/50 120v, Orion 12/12 50 A DC to DC battery charger, MPPT 150/45 Solar Controller, Smart Shunt 500A/50Mv, Lynx Distributor, Cerbo GX MK 2, EPOCH 12v 460 AH battery, and a GX Touch 50 were all the major components, all Victron except for the battery. The engine generator alternator was smoked. A new one from Nations was $1600, which just seemed crazy to me. After a lot of research I decided to just come off the engine alternator and that has worked fine. My MPPT is a little overkill but in cold weather I don’t get over voltage alarms. There were also several switches, fuses, and wiring. I love the setup. It really is trouble free.
 
I have a 2014 CS Adveurous and have been thinking that I wanted to do the same thing. If possible can you post the Victron components that you used. Did you replace the extra engine alternator or use a DC-DC Charger to charge batteries went driving?
Ditto. I also have a 2014 CS Adventurous and would love to do something similar in my unit.
 

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