Solid state batteries?

The "holy grail" of EV batteries is greater range, costs lower than lithium ion, no rare earths, fast charging times, long life and safe.

A Scandinavian company claimed at CES that they have made a breakthrough. 

If correct, this really could be a real game changer. Imagine if EVs could be charged very fast and have great range and be no more expensive than a fossil fuelled car and only need an occasional charge. This could be the breakthrough like we saw with CRTs and digital cameras. It could also really help with climate change.

Look out for DONUT batteries.

I am sure all the major car manufacturers are working hard towards this. A tipping point IS coming.

Solid state batteries

Most agree that electric cars are not there yet. 

Early adopters have to contend with lithium-ion batteries, where lithium is in short supply (and often mined by children), limited range, high prices and long charging times.

If ranges were significantly improved, charging would be needed less often.  Also price puts many off currently. One answer that always seems to be "just around the corner" are solid state batteries. These promise greater ranges, lower prices and no rare materials.

These seem nearly there, but not quite. With all the research it is likely this will come, but when?