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Directory:A123 Systems

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A123Systems IRM Automotive Series Concept Module.  (source)
A123Systems IRM Automotive Series Concept Module. (source)

A123 replaced the cobalt oxide in lithium-ion cells with nanophosphate, which is phosphate in particles a few billionths of a meter in size. The battery technology allows quick charge, while delivering high power density, with a long life-time. Is used in power tools, and is process of breaking into hybrid vehicle market.

"The Company is the first to simultaneously address the three major factors affecting battery performance: High Power, Intrinsic Safety and Long Life." [1]

"A123Systems high power battery technology is based on new highly active nanoscale materials that are inexpensive, nontoxic, and extremely stable in electrochemical systems." [2]



Official Website

Latest Developments

June 12, 2012

January 7, 2009

September 1, 2008

  • Ric Fulop, 33 Wins TR35 2008 Young Innovator Award - Ric Fulop helped negotiate a deal with Black and Decker to supply batteries for the power-tool market. In 2006, partly on the strength of the com pany's success in reliably producing millions of battery cells a year for power tools, Fulop and his partners persuaded GM to give A123 a chance. (MIT Technology Review; Sept. 1, 2008)

February 26th, 2007

President Bush Meets with A123Systems’ CEO to Discuss Advanced Batteries for Plug-In Hybrids Capable of Over 150 MPG

January 25th, 2007

A123Systems Receives $40 Million Investment to Expand Product Portfolio and Scale Manufacturing of Hybrid and Plug-In Hybrid Batteries

January 4th, 2007

General Motors to use A123Systems' Batteries for Plug-In Hybrid Development Program

January 3rd, 2007

Cobasys and A123Systems Announce Partnership To Develop Lithium Ion Hybrid Electric Vehicle Battery Systems

December 8th, 2006

USABC Announces $15 Million award to A123Systems for Development of Next Generation Hybrid Vehicle Batteries

October 26th, 2006

A123Systems To Develop High Voltage Battery Modules for Lightweight Fuel Cell Hybrid Bus




  • Li Ion energy with very high power (100C pulse discharge)
  • 5 minute re-charge with high energy
  • Inherently safe and green chemistry
  • Extremely long life at low and high rates
  • Widest temperature range (-30C to 70C)
  • Mechanically robust laser welded design
  • Lowest impedance growth and excellent calendar life



  • power tools
  • hybrid electric vehicles
  • home appliances
  • electric drive systems
  • robotics
  • stationary power
  • load balancing
  • specialized military equipment
  • medical devices


  • A123 Unveils New E-REV Battery Cell for Chevy Volt - It is a flat “prismatic” cell that is significantly larger than the cylindrical cells that we are used to seeing from A123. The cell is rectangular, and is designed to be stacked within the pack like slices of bread. (GM Volt; De. 3, 2007)


"A123’s first products are being produced as cylindrical form factor cells. These cells have been extensively tested and successfully validated by multiple customers and are currently in mass production at our manufacturing facilities in Asia.

"A123Systems can develop a customized power solution to fit your energy needs, whether your products use rechargeable batteries, disposable batteries, 120V or 220V AC power, compressed air, or internal combustion engines, A123Systems novel technology offers new performance features that could revolutionize your products."


"DeWalt used A123 batteries in a new line of cordless power tools. They are twice as strong as their corded counterparts and five times as strong as the battery-powered ones they replaced. The battery lasts for 2,000 recharges." [3]

Plug-in Hybrids

"A123 created a conversion kit (yet to hit the market) that turns normal hybrids into plug-in hybrids capable of getting 150 m.p.g. in city driving. Plug-ins require an overnight charge from a normal wall socket to get the extra mileage. According to 2007 Environmental Protection Agency estimates, the Toyota Prius gets 60 m.p.g. General Motors also contracted A123 to help produce the Saturn Green Line Vue, a plug-in hybrid." [4]


Company: A123 Systems


A123Systems’ breakthrough technology, innovative manufacturing model, team of tier-one investors and industry leading executives are providing the power to change the game for today’s OEM, Military, Automotive, and medical device manufacturers.

Founded in 2001, A123Systems’ proprietary nanoscale electrode technology is built on initial developments from Massachusetts Institute of Technology.

A123Systems has multinational manufacturing capability. In addition to the main headquarters, which is located in Watertown MA, A123 operates a combination of wholly owned, state-of-the-art tier one manufacturing plants and subcontractor facilities in China, Korea, US and Taiwan comprising of more than 100,000 square feet. These facilities meet the stringent quality requirements of Fortune 500 companies.

Inventor: Yet-Ming Chiang, MIT

Yet-Ming Chiang is founder of A123Systems. He is a materials-science professor at MIT.


In the News

  • Why A123 Didn't Get the Volt Contract - There's still no official word (it's expected by the end of the year), but it looks as though A123 Systems, a company based on a remarkable new battery chemistry formulated at MIT, won't be supplying the batteries for the first generation of GM's new electric car, the Volt. (Technology Review; Nov. 14, 2008)
  • An Electrifying Startup - A new safety-tested lithium-ion battery from A123 Systems could help electric cars and hybrids come to dominate the roads. The company's batteries store more than twice as much energy as nickel-metal hydride batteries, the type used in today's hybrid cars, while delivering the bursts of power necessary for high performance. (MIT Technology Review; May/June 2008)
  • Nanotech will let us wear batteries and get 150 m.p.g. - "Enter the nanotechnological battery, the new lightweight and powerful engine of high-tech dreams, making everything possible from Ball's rope ascender to hybrid vehicles capable of getting 150 miles per gallon to battery-powered fabrics that will let soldiers plug electronic devices into their uniforms." (Includes section on A123) (USA Today; Mar. 15, 2007)
  • AutoblogGreen for 03.15.07 - ... he's returned with so many details about GM's batteries (and A123 Systems, Cobasys, and more), that you'll have to digest it in three or four sittings. ... (Autoblog, CA; Mar 15, 2007)
  • Battery tech starts catching up to high tech - A123 Systems, maker of the battery in Ball's rope ascender, used a different nanomaterial to improve the lithium-ion battery. ... (AP; Sacramento Bee CA; News & Observer NC; Mar 14, 2007)
  • A New Battery Takes Off in a Race to Electric Cars - A123Systems, a start-up in Watertown, Mass., says it has created a powerful, safe, long-lived battery. If the cell fulfills the ambitions of its maker, that softer sound will be the future of automobiles. (NY Times; Mar. 11, 2007)
  • Nano-Batteries That Keep On Going - A123 Systems is no stranger to readers of the Forbes /Wolfe Nanotech Report, where, most recently, it topped our list of potential initial public offering ... (Forbes, NY; Mar 6, 2007)


A123Systems headquarters
The Arsenal on the Charles
One Kingsbury Ave
Watertown MA, 02472
Main Office Phone: 617-778-5700
Main Office Fax: 617-778-5749



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