Traction batteryAustralia

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177. Traction battery

A traction battery is a rechargeable battery that stores electrical energy used to propel an electric or hybrid vehicle. It supplies power to one or more electric traction motors and is normally much larger and more powerful than the vehicle's conventional 12-volt starter battery.

Traction-battery capacity is commonly expressed in kilowatt-hours (kWh) and strongly influences an electric vehicle's driving range. Its performance and usable capacity can gradually decrease with age, charging cycles, temperature and use.

Traction battery
Lithium-ion traction batteries of a SOR EBN 11 electric city bus at IAA 2014. (Hanover, Germany)
Wikimedia.org • Spielvogel • CC0
What does a traction battery do?

A traction battery stores electrical energy and supplies it to the electric motor or motors that propel the vehicle. In hybrid vehicles it works together with another power source, while in battery-electric vehicles it provides the main source of propulsion energy.

What is the difference between a traction battery and a 12-volt car battery?

The traction battery provides the large amount of electrical energy needed to propel the vehicle. The conventional 12-volt battery mainly supplies low-voltage systems and supports functions such as vehicle electronics, control systems and starting procedures.

What does traction-battery capacity mean?

Battery capacity indicates how much electrical energy the battery can store and is commonly expressed in kilowatt-hours (kWh). A larger usable capacity generally allows more electrical energy to be available for driving.

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