Added dual battery setup to my jeep for overlanding trips
My Jeep almost stranded me last fall because I drained the starter battery running camp gear overnight. That was enough pain for one season.
I kept the stock battery for starting and added a house battery in back. Went with Vatrer Power for that one. Its a 300Ah LiFePO4 at 12V, with self heating. Also installed a CTEK D250SA and a 2000W inverter.
It is not a tiny setup but now I can run fridge, camp lights, radio charging, and heater fan without babysitting voltage every hour. Typical day for me is around 40 to 55Ah used depending on weather.
Biggest lesson was wiring. I first used thinner cable on the charge line and saw annoying voltage drop. Swapped to thicker cable and it immediately behaved better. Wish I did that first and saved myself a weekend.
Took it to the Sierra last month, nights in the teens. Battery still charged in the morning once there was sun. For my use, this setup is way less stressful than one battery trying to do everything.
For folks running dual battery in a Wrangler, what did you do for tie down and crash safety in the cargo area?