Tiffin Allegro Red 33AA
System Schematic

Basic Parts List
- 6 - Battle Born 100 Amp Hour GC2 Batteries
- Victron Multiplus II 12/3000/120-50 2x120V
- Victron VE.Bus Smart Dongle
- Victron MPPT 150/100 Smart Solar charge controller with built in Bluetooth
- Victron SmartShunt with built in Bluetooth
- Victron GX Touch 70 Display
- Victron Cerbo GX
- Atkinson Electronics GSCM-Mini
- 8 - Newpowa Solar 210 Watt Solar Panels
- 24 - Aluminum Solar Panel Mounting Z Brackets with Stainless Steele Hardware
- 20' - 4 AWG Welding Cable - Red
- 20' - 4 AWG Welding Cable - Black
- 5.5 ' - 2 AWG Welding Cable - Red
- 4' - 2 AWG Welding Cable - Black
- Miscellaneous 2 AWG lugs
- Red and Black 1/2 " Heat Shrink Tuning
- 2 - Micro Air Easy Starts
- 50' - 6/4 Portable Cord SOOW
- AM Solar Combiner Box
- 4 - Strain Relief for Combiner Box
- 6 AWG Lug
- 1.5' - 6 AWG bare Copper Grounding Wire
- 4' - 4/0 AWG Welding Cable - Red
- 4.5' - 4/0 AWG Welding Cable - Black
- Miscellaneous 4/0 AWG Lugs
- Red and Black 1" Heat Shrink Tubing
- Midnite Solar Baby Box Enclosure
- Various breakers for Midnite Solar Baby Box Enclosure
- MC4 Male/Female Solar Panel Cable Connectors
- 100' - 10 AWG USE-2 Black PV cable
- Miscellaneous parts, sealants, and connectors
Installation Notes
This installation was completed in March of 2022. The owners of this motorhome want to be able to travel more and boondock without having to run the onboard generator regularly. They also want the ability to use the motorhome during power outages at their home. The motorhome had a residential refrigerator and a factory installed Magnum 2012 inverter with an ME-RC50 remote panel. The OEM installation did not include a battery monitor with the other Magnum components.
The owners were interested in upgrading their system to better, more capable components, including adding lithium batteries and solar. They went with Victron components for the new equipment and wanted Battle Born lithium batteries. Initially they requested four standard Battle Born batteries because the existing battery tray could only fit four without modifications. I spoke to them about Battle Born GC2 batteries and explained I could get six of them in their existing battery tray. They were happy for the additional storage capacity and agreed to the battery change. I ordered the necessary parts and we scheduled the installation.
The installation went smoothly, with no major issues. As is typical with most diesel pusher motorhomes the wire runs were a bit difficult, but I was able to get everything in place with a bit of work. The owners were very happy with the final product.