The mysterious story of the battery startup that promised GM a 200-mile electric car

Untested small suppliers almost never get in the door of the world’s major automakers. This is fascinating story about Department of Energy backed Envia Systems, General Motors, and the battery technology that wasn't all it claimed to be, in a big way.

This light is powered by gravity

EarthTechling has featured LED lights powered by solar energy, wind energy, and even human energy. But each of these has obvious limitations–sometimes there’s no direct sunlight, the wind won’t blow, or you don’t feel like cranking on a handle.

Boeing institutes tough battery tests

Boeing is desperately trying to get its 787 Dreamliner fleet back into the air and it is now testing the plane's volatile Li-Ion battery system to a rigorous standard that it helped develop itself. The strict new standard was never employed on the Dreamliner and in retrospect it might have been a good idea to run the tests before it was pressed into service.

Nissan: Our electric car can power your home

Nissan  is taking the all-electric car to new heights. Now you can do more than just drive a Nissan LEAF, you can also use it to power your house.

HP recalls 54,000 Lithium-ion notebook batteries

The US CPSC puts customers of HP and Compaq notebooks on notice adding to 70,000 batteries previously recalled last May.