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We've needed one for ages! Lithium ion is the best we can do so far, and it has two GAPING flaws:

* tons of energy is lost as heat * volatility of the chemical storage mechanism occasionally causes that heat to get released as an explosion

I'd love to see Musk's solution end up in a massive increase in battery performance.

I've looked around and it seems there are lithium-sulfur based batteries with 10x capacity and all in all lasting 4x

I've been adamant that we've needed a battery revolution since Terminator. Batteries were the major hurdle 30 years ago and they still today.

I can't believe it's been 30 years.

It's been 160 years since the first hydrogen fuel cell and the lead-acid battery were invented.