On average, car batteries last between three and five years. If you want to avoid needing to change yours after just one or two, here are simple guides to help extend its lifespan.

Regularly test your battery voltage

The simplest way to test your battery’s voltage is by using a voltmeter. If purchasing one, digital voltmeters are the easiest to use. For the most accurate reading, complete the voltage test at least twelve hours after your car has been turned off.

Don’t leave your car unused for long periods of time

Your car will perform at its best when it’s used regularly, so if possible, take it out for a 30-minute drive at least once a week to warm up the engine and circulate your car’s fluids.

Clean your battery regularly

Grime, dirt or dampness on a car battery can cause leakage across the battery casing to cause a short circuit, which could in turn flatten your battery. This surface-level grime can be easily removed with a sponge and a dry cloth. Do this at least once a month to avoid build-up.

When your car’s engine isn’t running, don’t use electronic accessories

Keeping your headlights, and/or interior lights on, or turning the ignition on to run the infotainment system without starting the engine, can drain the battery. This is because your car’s alternator is shut down when the engine is switched off, so electronic accessories instead drain power from your car’s battery.

To avoid this, get into the habit of checking that everything (most importantly, your lights) are switched off every time you exit your car.

Get your car serviced on a regular basis

To prevent the chance of an unexpected breakdown, it’s best to have your car battery professionally tested. At your next car service, ask the mechanic to check that your battery is in good condition and is charging correctly.