The hundred pounds of batteries just doesn't go down smoothly for many of us, especially those whose thinking is steeped in UL.

A hundred pounds here, eighty there... it starts to add up.

UL has covered this ground, but on the level of ounces or grams.

You are in another realm, as far as weight goes. Realms beyond.

It is almost like some strange science fiction it is so other realmish.

That said, here is an idea: make something like a large bear canister that you can sleep in.

Like some of the canisters sold to backpackers, it could be made of carbon fiber for strength and low weight. As a side benefit, it would be easy to make it watertight and floatable. This opens up whole new realms of design and travel and camping possibilities and inspirations. Especially if you can incorporate UL engines and sails.