I kinda hate the term vanlife, but I guess it's fitting because for the past 10 months I have been living my life in a van with my wife, our cat, and two motorcycles.
We have 4x200 watt Renogy panels on the roof for a total of 800 watts of solar. I DIYed a Lifepo4 battery using 4x272 amp hour 3.2 volt Lishen cells for a 12.8 volt nominal battery that can provide roughly 3500 watt hours of energy. The cells are managed with an Overkill Solar BMS.