Batteries

The Rapid Equipping Force seeks solutions to problems soldiers encounter in the field -- such as packing pounds and pounds of batteries on patrol.

A promising new technology aims to store electricity for the power grid on the cheap.

Big battery packs are a balancing challenge -- if the cells work unevenly, one can overheat and burst into flames.

Prof. John Goodenough discovered the advance that made the lithium-ion battery -- and the wireless world -- possible. But now another breakthrough is needed.

The biggest barrier to renewable energy such as solar and wind is storing the electricity it generates. In a university laboratory, a scientist painstakingly re-imagines the battery.

Wangxiang Group, China's biggest auto-parts conglomerate, has offered $450 million for a controlling stake in a Massachusetts electric car batteries company.

Author Andrew Blum takes a peek behind the screens and traces the "Tubes" that connect us to one another.

From shredded paper to mp3 player

One of the biggest problems with the lithium batteries used in everything from laptops to electric cars, its liquid electrolyte. It gets really hot...

Here's a brain bender: Korean scientists have developed a way to turn sound into energy. The idea is that such a system could be installed in a...