Thanks for all the help, but the magic number seems to be 200 watts. I'm having no problem finding that for my space issue, but it seems
nearly impossible to brake the 200 watt barrier.
I'm installing a Dometic CR-110 Coolmatic in my Sprinter Average power consumption: 45 watts (3.75 amps), other than the fridge I just have a water pump LEDS and laptop. I'm thinking 200 watts of solar with a 100 amp hr Lithium battery should do the trick, any suggestions?