
Looks like the problem of waiting too long for an EV fill at the garage may have been solved. No longer a long wait but now a charge in only five minutes - about the same as petrol. Just needs the power grid infrastructure sorting now :wink:
This is a silicon anode lithium-ion (Li-ion) battery technology from a technology licensing company called Enevate Corporation, which has announced its HD-Energy® Technology for Electric Vehicles (EVs). This features high energy density and long driving range with extreme fast charging in only 5 minutes giving up to 240 miles (390 km) - or up to 50 miles (80 km) range with a 60-second charge.

For cars the cell design seems to handle a 10C charge rate to 75% capacity in 5 minutes with a 750 Wh/l energy density ~300 Wh/kg and will handle charging and discharging down to -40°C. Apparently it's safer too being inherently resistant to lithium plating.
There are similar improvements available to mobile devices:

This shows the relative technology improvement with the company claiming a 1kWh/l roadmap:

News article here:
http://powerpulse.net/?post_type=post&p ... source=ppd
Company press release:
http://www.enevate.com/enevate-announce ... -vehicles/
The technology:
http://www.enevate.com/technology/