A123 makes a pretty good lithium battery that has a high-cycle life and can put out loads of power. What it's not so good at, however, is holding a lot of energy. At least, not when compared to ...

Tesla has greatly expanded the number of lithium-ion battery cells it's buying from Panasonic, the electric car maker announced today, hinting at a major increase in production of the Model S ...

TOKYO -- Komatsu plans to expand production capacity for batteries at its U.S. unit by four times, eyeing the mining industry's growing push toward electrification and decarbonization. The ...