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This toaster-looking gadget boosts your phone’s battery in seconds
(www.theverge.com)
This is a most excellent place for technology news and articles.
I’m in Australia, so my perspective may be skewed. The trailer would be optional, and I only mentioned it as the system as proposed could be just an extension of the self contained removable battery in a vehicle.
Unless batteries can become tremendously lighter, I see a standardised, swappable EV battery a given as a means to further increase vehicle efficiency. Why lug around hundreds of km of range when the distance between typical charging points is a fraction of that.
So you need to raid Battery Town and Gastown on your road trips while fighting off weirdos on the road? 😀