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Maybe one day this technology gets combined with 3D printing and your print a battery that fits your car exactly. Who knows.

You were making some good points and comments...until this one.

3D printing is vastly different than the 3D battery concept.
3D printing is slow, expensive and good for one of something, that is custom.
Mass production and economies of scale is what makes for cheap batteries (and other things).
Why would my car have a different battery than the thousands (millions, hopefully) of other cars?

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What we need to make electric cars more viable is really only one thing: cheaper batteries. Yes, it would be "nicer" if they had a bigger capacity and charged faster and lasted longer, etc. But if the battery in the Volt, for example, were to cost $500 rather than $20,000 all other poor/marginal parameters could be forgiven and we'd have many reasonably priced EVs, PHEVs available today.

Mike
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