[coldtea]

>raises its own questions, such as: if this technology is so amazing, why is it being deployed in satellites and medical devices but not cell phone batteries and laptops? Why would you put unproven technology into the most fault-intolerant sectors first?

Don't know the specifics for this technology, but the answer is obvious in general.

Because new techologies are first put to use in expensive and demanding sectors, that can pay the top dollar needed for them (since they are not mass-market yet to have economies of scale).

That's why the army, NASA, industry etc had GPS, cellphones, etc before you had one, and the same for most other such technologies.