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Originally Posted by sendler
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Grid storage batteries can be totally different chemistries that car batteries. They SHOULD be totally different, so they are cheaper and easier to make - they do not need to be small or high energy density.
Molten metal batteries, or salt water batteries, or many other possibilities.
Car batteries will also change - lithium glass or lithium plastic solid state batteries are promising; with MUCH higher energy density and much better longevity, and much better safety, too.
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