News / Motoring
Friday, August 22, 2008
Tesla Roadster Battery Design
Image: © theirEarth News Media

Tesla Roadster Battery Pack Design

The Tesla Roadster is the electric supercar manufactured by Tesla Motors of San Carlos, California in the United States. It sets the standard for electric car performance with a 3.9 second 0 to 60 mph (96 km/h) acceleration time, a top speed of 125 mph (200 km/h) and is probably one of the fastest production cars you can buy for its overtaking capability.

The lithium ion battery pack on the Tesla Roadster is charged in 3.5 hours and is made up of eleven 4.8 kWh modules giving a total of 52.8 kWh of available power. Tesla Motors calls the Roadster's lithium ion battery pack the Energy Storage System (ESS). Tesla Motors indicates that the range of the Roadster is about 220 miles (352 km) and the useful battery life is 100,000 miles (160,000 km).

The Roadster's ESS battery pack delivers surge power right up to the electric motor's 13000 rpm redline and the three phase - four pole motor delivers 248 peak hp (185 kW). All of this power is packaged in the Roadster's carbon fiber body that is mated to a bonded extruded aluminium chassis for the ultimate in aerospace technology at street level.

The ESS battery pack design is made up of 6831 individual lithium ion cells and the total ESS battery pack weight is 900 lbs (409 kg). The battery pack is stored behind the passenger compartment and in front of the rear storage compartment(see photo). At 10,000 miles per year for 5 years (50,000 miles - 80,000 km), Tesla Motors says the ESS battery pack will have 70% of its charging capability left, which will mean most people would look to replace the battery after 7 to 10 years of owning the car, which is very good longevity for zero emissions high performance driving.

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