car battery

A car battery is a type of rechargeable battery that supplies electric energy to an automobile. Usually this refers to a SLI battery (Starting - Lighting - Ignition) to power the starter motor, the lights and the ignition system of a vehicle’s engine. This also may describe a traction battery used for the main power source of an electric vehicle.
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Noun
1. a lead-acid storage battery in a motor vehicle; usually a 12-volt battery of six cells; the heart of the car's electrical system
(synonym) automobile battery
(hypernym) lead-acid battery, lead-acid accumulator
(part-holonym) electrical system