WASHINGTON-- Dr. Shimshon Gottesfeld, Chief Technology Officer of MTI MicroFuel Cells (MTI Micro), the developer of the award-winning Mobion(TM) micro fuel cell technology for handheld electronic devices and a subsidiary of Mechanical Technology Incorporated (Nasdaq: MKTY - News), will present at the opening session, chair a session, and participate in a panel discussion at the 7th Annual Small Fuel Cells for Portable Applications conference. The conference will be held April 27-29 at Loews L'Enfant Plaza Hotel in Washington, D.C.

Dr. Gottesfeld, one of the industry's foremost experts in the area of fuel cell research and development, will be sharing his insights during the following conference events:

     * Opening Session Keynote (10:00AM Wednesday) - Gottesfeld will discuss
       how MTI Micro delivered the first micro fuel cell product integrated
       into a portable RFID reader to Intermec Technologies Corp., and share
       MTI Micro's plans for entering the military market.
     * Session Chair "Microfabrication, MEMS, and System Integration" (2:10PM
       Wednesday) - This session will cover the latest industry trends in
       micro-technology development now being applied to small fuel cells.
     * Panel Discussion Participant "Small Fuel Cells: Taking the Leap for a
       Fully Commercial Market" (9:00AM Friday)

Also at the event, MTI Micro will demonstrate how Mobion(TM) technology could be deployed to power future military sensor applications. Military sensors are becoming increasingly important for military operations; they can be placed in strategic locations and networked together to detect, record, and send intelligent information to a central location. Applications can range from surveillance and monitoring of U.S. borders for homeland defense to deploying sensors in enemy territory for combat operations.

"Military sensors are power-hungry devices situated in remote and some times dangerous places where changing batteries is not desired," said John Cerveny, Director of Government Systems at MTI Micro. "Mobion(TM) powered sensors could offer the military longer device use time, uninterrupted intelligence data, less dangerous missions, and lower costs due to less frequent battery replacements."

The company plans to double the energy density of the existing BA5590 batteries powering military sensor applications by the end of June 2005.

This demonstration at the 7th Annual Small Fuel Cells Conference follows the Company's previously announced plans to deliver product to the government and military markets in 2006. The Company plans to deliver sensor powerpack prototypes to the Army's Special Operations Command Forces (SOCOM) in the second quarter of 2005; develop and deliver a soldier/radio power pack prototype in the third quarter; and announce an agreement with a lead customer/partner for sensor products by the end of the year.

"We see Mobion(TM) powerpacks providing benefits for our armed forces including significantly lighter loads, longer device use time, and lowered field deployment costs by avoiding frequent remote battery replacements," said Alan Soucy, President and COO of MTI Micro. "We also see military Mobion(TM) powerpacks charting our pathway to the commercial market, helping advance miniaturization, manufacturability and decreasing costs."

About MTI MICRO

MTI MicroFuel Cells Inc., a subsidiary of Mechanical Technology Incorporated, (Nasdaq: MKTY - News), is the developer of the award-winning Mobion(TM) direct methanol micro fuel cell technology. The Company has a world-class team of entrepreneurial business executives, researchers and scientists; a number of system prototypes demonstrating size reductions and performance improvements; significant related intellectual property; and has received government awards and developed strategic partnerships to help accelerate commercialization. More information is available at http://www.mtimicrofuelcells.com

About THE KNOWLEDGE FOUNDATION

The 7th Annual Small Fuel Cells Conference is sponsored by the Knowledge Foundation. For information on the conference or about the Knowledge Foundation, visit http://www.knowledgefoundation.com.

Statements in this press release which are not historical fact including statements regarding management's intentions, hopes, beliefs, expectations, representations, projections, plans or predictions of the future are forward- looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. Such statements include the benefits of Mobion(TM) technology, the future prospects and applications for Mobion(TM) technology, the timing or success of market entry in the vertical or horizontal markets by MTI Micro, MTI Micro's plans to double energy density, and MTI Micro's ability to meet its stated milestones on time, it at all. It is important to note that MTI Micro's actual performance and results may differ materially from those in any such forward-looking statements. Factors that could cause actual performance and results to differ materially include, among others, risks related to financing, uncertainties in development, manufacturing, competition and customer demand for DMFCs, and the risk factors listed from time to time in Mechanical Technology Incorporated's SEC reports including but not limited to, the Annual Report on Form 10-K for the year ended December 31, 2004 and Quarterly Reports on Form 10-Q.