Hi Ian, I’m always a little apprehensive when I read about the power requirements/usage in our vans because of the many varied setups and requirements, so before I attempt to address your questions let me give you a rundown of our setup and requirements. 2013, 18’ (16’6 internal) XC3. 135w Kyocera panels (x2). 120ah AGM batteries (x2). 215L Waeco. Fantastic Hatch fans (x2). We also have another 120ah AGM and 40L Engel in the tug that’s hooked to the van. Our daily power usage typically consists of the TV for an hour or so (if we can get a signal), lights over the bench, dinette and stove top during meal preparation/dining and exterior light under the awning for a couple of hours each evening. (It goes without saying that the fridge/s are always on) We are aware of what we use, but don’t become anal about it, although I do admit to keeping an eye on the battery monitor. On a typical bright sunny day our batteries are back to 100% and in “float” mode by around 12:00 – 1:00 PM. Now with that said, the occasions when we’ve had to drag out the genie has been in the winter months with rain and heavy cloud for more than 3 days. Also bear in mind that “that beautiful shady spot under the trees down by the river bank” won’t cut it. You have to be mindful that where you park up has a lot to do with how efficiently your setup is going to work. Fantastic Hatch ….. we think that even on low they are a bit noisy, but find that if we open them both and just have the rear turned on to “out”, it draws a nice cool breeze down over the bed at night and we don’t notice the noise. ( This will depend on your layout) While on the Fantastic Hatch ….. we were advised by some friends of ours to get the ones with the auto rain sensors. We did and think they are the best thing since sliced bread. Hope this helps and enjoy your new Kedron. Geoff PS: Went down the fridge and lithium routes before ordering and am very happy with the outcome.