A traction battery is specifically designed for powering electric vehicles, such as electric cars, electric buses, and electric bicycles. Unlike traditional automotive batteries used for starting, lighting, and ignition (SLI) systems in internal combustion engine vehicles, traction batteries are optimized to provide the sustained power required for electric propulsion. These batteries feature high energy density, durability, efficiency, and advanced safety mechanisms. 

Common types include lithium-ion batteries, which are favored for their high energy density and long lifespan. Traction batteries are essential in various applications including passenger vehicles, public transportation buses, e-bikes, and commercial electric vehicles.

They offer significant advantages such as reducing greenhouse gas emissions, lowering operational costs through reduced fuel consumption and maintenance needs, improving vehicle performance with instant torque delivery, and enhancing energy independence by utilizing renewable electricity sources. Overall, traction batteries play a pivotal role in advancing sustainable transportation solutions.