Hey team, I recently completed my "entry level" auxiliary battery setup on my 2006 V6 4R. It runs my little F40C4TMP fridge on Eco-Mode (35w off and on) for the time I need it to as well as charging my cell phone and insulin pump controller device.

I do have a Bluetti EB3A, but it discharges in about 5.5-6 hours and takes about 3-4 hours to recharge while driving via the cigarette lighter. The bigger and better units go up in price really quickly, and I wanted something to be more "stock" looking and for it to be able to stay in the truck at all times.

Battery: Renogy 12v 100ah/10HR Deepcyle AGM
Isolator: Keyline 12v 140 Amp kit (comes with wires to connect the two batteries)
Cutoff Switches: Ampper Battery Switch 12-48V Master Cutoff
Fuse Block (in trunk): 6 fuse, 12v, ATC/ATO block.
Power Accessory Panel: Kohree 12v Marine Car Charger Socket Panel

Accessory panel wired to fuse block using 10g wire (no temp change while running fridge)

Renogy wired to fuse block using 6g

Cutoff switches between two batteries and between Renology and fuse block

Pictures:

Renology

Renology

Renology

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Note: I figure I'll need something from redarc if I wanted to charge with solar and/or upgrade to lithium ion in the future, but running the AGM just charging off the main battery seems to be doing just fine! I am assuming that with a charger I could probably get the AGM up past 13V resting (?) but we will see. I was super pleased having the charge only drop from 12.8-12.9V down to 12.6-12.7V after having my things run on it for about 10 hours.

Update!

I am now charging the battery using the 40A Renogy charger, and also have the 100W solar panel up on my roof rack with their Renogy Wanderer 30a PWM controller plus Bluetooth dongle. Its incredible! the only time the battery is below 13v is overnight!

What battery tray is that?

I have a C4 Fabrication similar tray passenger side in my 5th gen. Current use for Smittybuilt compressor. Not able to upload pic-sorry

How much $$$ are you in on this project?

You can charge your Bluetti much faster by installing a 12vdc to 24vdc converter. For the 200 watt max input on the Bluetti it would be an 8amp unit (192 watt max out). ATO makes one at 8 amp.The charge time would be somewhere less that 2 hours while driving. Use the solar input plug that came with your unit. I did this with my Pecron that I charge at 360 watts while driving (400 watts max on that unit) by using a 12 to 48vdc @ 8amps converter. I installed that converter inside the case of an old 12vdc to 120vac inverter that I took the guts out of but I kept the little fan and hooked it up to the 12vdc input.(it will get hot) I am so happy to be able to charge to 100% while driving from one campsite to the next. I run an Iceco fridge and charge flashlights, phones, tablet for GPS ect. I can even run a small heating pad at my feet while in the sleeping bag (40 watt) with no worries about running out of power for the fridge. Here is a pic of the setup to see if everything was going to work, charging at 375 watts!

Attached Images