Water reserve is a good thing when out in the woods
I carry 65 gallons of potable water and mostly camp by lakes and rivers which contribute to the cooling water supply as well as fresh fish supply. Summer time is normally <10% humidity so a swamp cooler works great for us into the late evenings even better it cools off at night during the hotter summer months around these parts.
No worries about battery amp hours being used during the Spring Summer and Fall - 560 watts of Solar PV array takes care of that - when winter arrives the rig is put away for the season in a heated barn. Darn that was yesterday back in the barn for the season looking forward to the next one - on to other projects