There's a Moore's Law for batteries that doubles their utility every 12-15 years. We've been arguing about batteries since the mid 90's. We have 3-4 times as much power to work with now. It'll happen in my lifetime, but I don't know if my parents will see it.

If we can build batteries that don't source new cobalt from the DRC, (by using none or recycling) that would remove one ugly skeleton from the closet.