Before you try to jump start a car, remember that batteries produce flammable gases. Here’s how to stay safe:
– Park both cars so their batteries are within easy reach of one another (without the cars actually touching).
– Keep the handbrakes on and the ignitions off.
– Use the red jump lead to connect the working battery’s positive (+) terminal to the flat battery’s positive (+) terminal.
– Take the black jump lead and attach it to the negative (-) terminal on the working battery.
– Then attach the other end to an earthing point (unpainted metal on the engine block or chassis) well away from the flat battery and fuel system.
– Keep both engines off and wait for 3 minutes, then start the working car’s engine and let it run for 1 minute.
– Turn on the engine in the car with a flat battery.
– Leave both cars to idle, at a fast pace, for around 10 minutes.
– Turn off both cars’ engines and carefully disconnect the leads in the reverse order to the way they were connected (remove the black lead from your car first and finish with the red lead from the other car).
– Make sure the leads don’t touch one another, or either car, as you remove them.
– Try turning the keys in the ignition to see if your car will start up.
– If your car won’t start there’s probably a more serious problem requiring professional help.
– If you’re still stuck, you can call us on 020 3633 3330.
You remove the jump leads in the reverse order to how you attached them. But if you’re not sure, here are the steps:
If the battery’s more than 5 years old and seems like it’s struggling to start the car, get it checked out. It’s better to be safe than sorry – it’ll be worse if it’s a roadside emergency or on a cold morning when you’re already late for work.