Ener1's EnerDel Web Site Expanded to Include Videos of Lithium Ion Battery Safety Tests

Market Wire, April, 2007

Ener1, Inc. (OTCBB: ENEI), an alternative energy company, announced that its EnerDel subsidiary has expanded its web site to include informational content and industry links that will help visitors understand the hybrid electric vehicle and lithium ion battery technologies. In addition, the web site contains videos of internal lithium ion battery safety tests which show the results of nail penetration of an EnerDel lithium ion cell compared to a commercial lithium ion cell. In the video, the nail penetration of the EnerDel battery failed safely, and the temperature of the battery did not rise above 40 degrees Celsius. This level of temperature demonstrates the advantage of our technology solution to provide superior safety of our products. The web site address is http://www.enerdel.com .

About Ener1, Inc.

Ener1, Inc. (OTCBB: ENEI) is an alternative energy technology company that is developing 1) lithium ion batteries for hybrid electric vehicles (HEV) at its 80.5% owned EnerDel subsidiary through corporate ventures and strategic partnerships with Delphi, ITOCHU and EnerStruct, 2) commercial fuel cell products through its EnerFuel subsidiary, and 3) nanotechnology-based materials and manufacturing processes for batteries and other applications at its NanoEner subsidiary. For more information, visit http://www.ener1.com and http://www.enerdel.com or call 954-556-4020.

For further details contact: Jerry Herlihy Ener1, Inc. T: (954) 556-4020 e-mail: jherlihy@ener1.com For media inquiries: Victor Webb/Madlene Olson Marston Webb International T: (212) 684-6601 e-mail: marwebint@cs.com