This gadget made the main headline of The Times today - here's a non-
paywalled-version from the Mail:

http://tinyurl.com/l3hlslv (or
http://www.dailymail.co.uk/sciencete...la-set-reveal-
home-battery-Elon-Musk-unveil-power-pack-tonight-slash-electricity-
bills.html)

Quite surprised never to have heard of this before, especially (AFAICS) in
this ng.

Thoughts? Shall I go and buy a PowerWall then?!

--
David