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Flat Battery Advice

When you suspect you might have a flat battery it’s important to check that it is the case. There are other causes which could give you the impression that your cars battery is flat.


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Can you operate the central locking system?

When sitting in the car are the warning lights displaying?

Can you operate the windows and interior lights?


When checking against these different questions there are a few things to remember. When checking the central locking use a spare key as the battery might have gone flat in the key you primarily use. If the battery is flat the warning lights might be dimly lit so taking a closer look can help.

If you are looking to jump start your car there is a few key things you will need. A set of jump leads, another car with a charged battery and an understanding on how to jump start your car. When jump starting a car it can be dangerous so making sure there isn’t any damage to the battery is an important factor and another is to remove any metal jewellery or items and make sure that nothing can touch the terminals on the battery.

Jump Starting Your Car

Stage 1 – The first stage would be to make sure the vehicle with the dead battery has all electrical devices and systems turned off. E.g Sat Nav, Radio, Lights

Stage 2 – Take the second vehicle and position it as close as possible to the vehicle with the dead battery. Make sure that the jump leads can easily reach from one battery to another.

Stage 3 – The next stage is to make sure that both the vehicles are switched off and remove the ignition keys and open the bonnets.

Stage 4 – Take one of the red jump lead and attach it to the positive terminal on the flat battery. To identify the positive terminal it will usually have a red plastic cover with a plus (+) symbol.

Stage 5 – Take the other end of the red jump lead and attach to the positive terminal on the good battery.

Stage 6 – Then take the end of the black jump lead and attach to the negative terminal on the good battery.

Stage 7 – Then take the other end of the black jump lead and attach to an earth point on the vehicle with the flat battery, a good earth point would a solid metal part of the engine.

Stage 8 – Now attempt to start the vehicle with the dead battery. If the vehicle doesn’t start after a few attempts, it could be a more serious fault.

Stage 9 – It your vehicle does start, allow the vehicle to run for a couple of minutes.

Stage 10 – After switch of the vehicle which had the flat battery and disconnect the negative jump lead to make sure the engine starts. Then you can remove the remaining jump leads.

​Making Sure You Safely Remove The Jump Leads

Stage 1 – Both vehicle are switched off

Stage 2 – Remove the black jump lead from the vehicle with the flat battery

Stage 3 – Remove the other end black jump lead from the other vehicle

Stage 4 – Remove the red jump lead connected from the vehicle with the charged battery

Stage 5 – Remove the other red jump lead from the vehicle with the flat battery


When The Leads Have Been Removed

Check to make sure that the vehicle with the flat battery starts. Use a battery charger to fully recharge the battery, this can take some time. If you can drive the vehicle try and avoid heavy traffic and use if for 30 minutes to put some charge into the battery.