20 Mar 2026

Solid state batteries

Recently there has been a great deal of excitement over Donut batteries and their claim to have produced a solid state battery with some remarkable properties. 

The only way to be sure about what it is would be a tear-down of one of these batteries.

Some independent testing casts some doubts on these claims. 

What is certain is that whichever company brings a solid state battery to market first will start a real revolution and make a lot of money!


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