We spent Monday through Saturday boondocking and our two 6V batteries and our 26 gallon water tank lasted us the entire week! We were even able to do spit baths (including bathing the kids feet, hands, and faces) each night. We didn’t have cell reception so we weren’t wasting our batteries but I use mine for my camera. I took a lot of photos and videos so I did need to recharge. And I guess other than the LED lights and the USB fans we didn’t use much battery. We brought Gatorade and water bottles in ice in a cooler. That helped the fridge keep up since we weren’t sticking lukewarm water bottles in the fridge. And it helped our water tank last since we drank all the Gatorade and eventually the clean ice water. It was really awesome to learn the extent of our trailer! We CAN boondock for a week just fine! Oh, and thanks to the dark windows, my early risers slept until 9 am each morning!