People are doing exactly that with batteries these days though. Go look at youtube channels where people are building a cabin, traveling in a van/RV, etc.

I'm seeing lots of videos with a portable "5 gallon container" sized batteries that people are moving around.

Even better, since you can attach some solar panels and not have to go refill the container, unlike gas/diesel containers.

This isn't to say batteries/solar are perfect for this. But, they are certainly providing enough pros vs liquid fuels that tons of people are widely using them in place of gasoline/diesel/kerosene.

Personally, if I never have to hear a damn generator running all frigging day/night while at a campsite, the cost to switch to batteries/solar will have been entirely worthwhile.