Battery

Battery

An EV battery stores electrical energy electrochemically and supplies DC power to the vehicle's electric drivetrain and other systems. A traction battery is built from cells combined into modules or pack structures with monitoring, protection and thermal management. Most current battery-electric vehicles use lithium-ion chemistries, although the exact cell materials vary. Battery capacity is measured as energy, normally in kWh. The battery-management system controls allowable charging and discharge conditions based on measurements such as voltage, current and temperature.