I’d find this video hard to believe were it not for its credentials. The WSJ reports that StoreDot, the start-up behind the technology, has its background in the Nanotechnology department of Tel Aviv University, and it’s been demonstrated at Microsoft’s Think Next conference.

Ultra-fast battery charging has been seen before, but using special (and not very portable) battery technology. This system charges batteries compact enough for smartphones. It’s demonstrated here with a Samsung Galaxy S3, but the company says that it plans to make versions for other phones …  expand full story