I carry a Goal Zero Yeti 1000 occasionally and just plug the T@b into the AC outlet. Easy and versatile. https://www.goalzero.com/shop/archive-power/goal-zero-yeti-1000-lithium-portable-power-station/ (View Post)
you can do what backpackers do. In addition to all the precautions already mentioned you might try. 1. food that does not need to be refrigerated ie Tuna, canned meats, freeze dried backpacking meals… (View Post)