Electric car battery maker A123 Systems misses an interest payment and has filed for bankruptcy.

Battery maker A123 Systems is suing Apple for what it alleges is an “aggressive campaign to poach employees” to build a competing battery business.

To hedge its bets, A123 is drumming up business in other markets. For example, it’s selling batteries to help stabilize the electrical grid. But the market for grid batteries is also uncertain.

Not long ago, A123 Systems Inc. was seen as a rising technology company that was going to help revolutionize the auto industry and put thousands of Americans into battery-powered cars.

After a long and bumpy road, battery-producer A123 Systems has officially filed for bankruptcy. This news comes immediately after word that the Waltham, Massachusetts-based company may not have ...

It’s not April Fool’s Day, but A123 Systems has a sense of humor. They changed their name to B456. A B456 is a fire extinguisher. I noticed the article, “After sale to Chinese firm, bankrupt ...

WALTHEM, MASS. -- A123 Systems Inc., a manufacturer of lithium-ion batteries for electric vehicles, disclosed that it made a breakthrough in battery chemistry that will allow its cells to be used ...

A123 to collaborate with SolidEnergy on a battery to quadruple range A123 makes a pretty good lithium battery that has a high-cycle life and can put out loads of power.

DETROIT (AP) -- After years of struggling in the nascent market for electric cars, battery maker A123 Systems Inc. filed for bankruptcy protection Tuesday. The filing drew criticism from ...

A123 Systems LLC plans to double the manufacturing capacity at its three lithium-ion battery plants in a $200 million investment.