Wortformen:(plural) flat batteries
(Automotive engineering: Vehicle components, Lighting and electrical/electronic systems) A flat battery is a battery that does not have enough power to start a vehicle or provide lighting. ▶ battery
⇒ The headlamps had been left on and the car had a flat battery. ⇒ We had to jump-start the car because it had a flat battery. ⇒ The battery in an electric car has to be charged, but the battery in the hybrid car
is charged by the gasoline engine, so there is no risk of being stranded with a flat battery.
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