Flat battery? Everything you need to know to jump-start your car

Before connecting the jumper cable, you need to triple-check you’ve got the right connection point. — dpa

If your car battery is completely flat, the starter motor will only make a dreaded clicking sound – and the engine will not start.

Older batteries in particular are considerably stressed in extremely hot or cold temperatures, and that can become a real problem in cars that are primarily used for short journeys or are rarely used.