Ask HN: Impacts of X orders of magnitude improvement on battery efficiency?

I have been thinking lately in how increases in battery technology have enabled lots of new transport technology (such as Teslas, segways, e-scooters, etc.), drones, mobile phones, etc., and how several other classical scifi technology is only (/mainly?) fiction due to energy limitations (exoskeletons, human-carrying drones, robots, some black-mirror-level technology, etc.).

Mobile phone adoption has changed the world. Electric cars are posed to do the same (sadly, autonomous cars promised a lot more changes that now seem somewhat farther into the future). I thought it would be an interesting thread for HN to discuss some other areas in which a hypothetical sudden 10x, 100x change in energy storage/availability would have a big impact in the world.

What do you think?