Battery Pack for Tesla Roadster Deemed Safe for Delivery in Production Vehicles Per U.N. Testing Protocol

Tesla Motors 2008 Roadster ESS is Among the Largest Lithium Ion Battery Packs to Meet Stringent United Nations Safety Requirements


SAN CARLOS, CA--(Marketwire - August 8, 2007) -


WHAT'S NEWS

--  Rigorous U.N. Testing Protocol for the Tesla Roadster ESS (Energy
    Storage System) includes:
           1) Altitude simulation
           2) Thermal cycling
           3) Vibration
           4) Shock
           5) External short circuit
--  In demonstrating the safety of the large format battery pack, Tesla
    Motors has achieved another major milestone on the way to commencing
    deliveries of the 2008 Tesla Roadster to customers this fall.
--  The ESS development program, which to date has spanned over three
    years, has included testing safety at both the micro (cell) and macro
    (module) levels.  At the cell level, each of the 6,831 individual
    lithium ion cells inside the Tesla Roadster's ESS has passed both UN
    and UL 1642 testing criteria.
--  ESS development and testing was performed by the Tesla Energy Group
    within Tesla Motors. The advanced technologies developed over the last
    three years have positioned the Tesla Energy Group to develop and
    manufacture battery packs for third parties.

BACKGROUND: TESLA ENERGY GROUP

    
--  Tesla Energy Group was formed in December of 2006 to develop and
    market custom designed battery packs for customers in a wide range of
    industries, utilizing Tesla's patent pending technology for the development
    of high-power, high-capacity battery packs with superior performance and
    safety characteristics.
--  Tesla Motors created Tesla Energy Group in response to demand from
    outside companies for advanced lithium-ion battery pack technology for
    automotive and other industrial use.
--  Since its founding in 2003, Tesla Motors has developed patent pending
    technology for the design and manufacture of high-power, high-capacity
    lithium-ion battery packs with superior performance and safety
    characteristics for use in its groundbreaking Tesla Roadster high-
    performance electric car.
--  The primary focus of Tesla Energy Group remains the development and
    mass production of battery packs for the Tesla Roadster, to be released
    later this Fall.
--  The increased economies of scale and additional sources of revenue
    will benefit Tesla Motors by generating incremental operating income while
    accelerating its lead in the development of advanced lithium-ion battery
    packs
    
    

QUOTES

--  Attributable to Martin Eberhard, CEO of Tesla Motors --

               ·   "In bringing an entirely new type of electric vehicle to
                   market, we have focused closely on safety as one of the
                   primary considerations in the design process."

               ·   "Rigorous testing by third party experts and regulatory
                   bodies has provided Tesla Motors with invaluable
                   technical feedback and a system of independent checks
                   and balances. This exhaustive process has helped to
                   ensure that the Roadster's ESS has been critically
                   examined both by our own engineers, as well as by
                   objective experts outside of Tesla's development team."

               ·   "As we begin final preparations for starting production
                   of the 2008 Tesla Roadster, this milestone represents
                   the culmination of many years of innovation,
                   development, and progress in making safe and reliable
                   electric vehicles that can replace gasoline engine cars.
                   The purely electric car that was once dismissed as a
                   vision of a distant future has now become a reality that
                   drivers can expect to see on the road in the coming
                   months."
RELATED NEWS
    
--  Erik Toomre, Director of Manufacturing Programs, Blogs on the U.N.
    Testing Program can be found at: http://www.teslamotors.com/blog2/
--  Tesla Motors CEO Martin Eberhard's Blog on the Tesla Energy Group can
    be found at http://www.teslamotors.com/blog2/?p=50
--  A White Paper on Tesla Battery technology can be downloaded from our
    website at
    http://www.teslamotors.com/display_data/TeslaRoadsterBatterySystem.pdf
    
    
CONTACTS
--  For Tesla Motors: contact David Vespremi at 650.413.6270 or
    davidv@teslamotors.com
    


TRADITIONAL PRESS RELEASE FORMAT BELOW:


Battery Pack for Tesla Roadster Deemed Safe for Delivery in Production Vehicles per U.N. Testing Protocol

Tesla Motors 2008 Roadster ESS is Among the Largest Lithium Ion Battery Packs to Meet Stringent United Nations Safety Requirements

SAN CARLOS, CA--(Marketwire - August 8, 2007) - Tesla Motors, a manufacturer of high-performance electric cars, has met the U.N. safety requirements for delivery of the Tesla Roadster's battery pack for use in consumer vehicles. In demonstrating the safety of the large format battery pack, Tesla Motors has achieved another major milestone on the way to commencing deliveries of the 2008 Tesla Roadster to customers this fall. The U.N Testing Protocol for the Roadster's ESS (Energy Storage System) included: (1) Altitude simulation, (2) Thermal cycling, (3) Vibration, (4) Shock, and (5) External short circuit.

The ESS development program, which to date has spanned over three years, has included testing safety at both the micro (cell) and macro (module) levels. At the cell level, each of the 6,831 individual lithium ion cells inside the Tesla Roadster's ESS has passed both UN and UL 1642 testing criteria. ESS development and testing was performed by the Tesla Energy Group within Tesla Motors. The advanced technologies developed over the last three years have positioned the Tesla Energy Group to develop and manufacture battery packs for third parties.

"In bringing an entirely new type of electric vehicle to market, we have focused closely on safety as one of the primary considerations in the design process," said Martin Eberhard, CEO of Tesla Motors. "Rigorous testing by third party experts and regulatory bodies has provided Tesla Motors with invaluable technical feedback and a system of independent checks and balances. This exhaustive process has helped to ensure that the Roadster's ESS has been critically examined both by our own engineers, as well as by objective experts outside of Tesla's development team. As we begin final preparations for starting production of the 2008 Tesla Roadster, this milestone represents the culmination of many years of innovation, development, and progress in making safe and reliable electric vehicles that can replace gasoline engine cars. The purely electric car that was once dismissed as a vision of a distant future has now become a reality that drivers can expect to see on the road in the coming months."

About Tesla Energy Group

Tesla Energy Group was formed in December of 2006 to develop and market custom designed battery packs for customers in a wide range of industries, utilizing Tesla's patent pending technology for the development of high-power, high-capacity battery packs with superior performance and safety characteristics. Tesla Motors created Tesla Energy Group in response to demand from outside companies for advanced lithium-ion battery pack technology for automotive and other industrial use. Since its founding in 2003, Tesla Motors has developed patent pending technology for the design and manufacture of high-power, high-capacity lithium-ion battery packs with superior performance and safety characteristics for use in its groundbreaking Tesla Roadster high-performance electric car. The primary focus of Tesla Energy Group remains the development and mass production of battery packs for the Tesla Roadster, to be released later this Fall. The increased economies of scale and additional sources of revenue will benefit Tesla Motors by generating incremental operating income while accelerating its lead in the development of advanced lithium-ion battery packs.

Contact Information: Contact: David Vespremi Tesla Motors (650) 413-6270