The battery is one of the few parts that usually fails without much warning, often on a cold morning. So it is worth knowing when replacement time is getting close, so it does not leave you stranded.
How many years does a car battery last?
A car battery usually lasts 4 to 5 years, but a good battery that is looked after can reach 7 years or even more. There is no fixed rule: it depends on the quality of the battery, the condition of the alternator and above all on how the car is used. Lots of short trips, intense summer heat, a car left standing for weeks or heavy electrical use all shorten its life. In Crete, the summer heat takes more out of a battery than most people think.
Signs the battery is running out
- The starter turns more slowly and sounds "heavy" when you start the car.
- The battery light or other warning lights come on.
- The lights dim when you start the engine or at idle.
- The start-stop system stops switching the engine off at traffic lights.
- The electrics (windows, radio) behave oddly or lose their settings.
How a battery is tested
With the car switched off, a fully charged battery reads about 12.6 V. Around 12.4 V it is roughly 75% charged, while below 12.2 V it is about half empty and needs charging or testing. Voltage does not tell the whole story, though: a tired battery can show the right voltage and still not have the power to start the engine. That is why a proper check is done with a battery tester that also measures cranking ability.
Cars with start-stop
Cars with a start-stop system need special EFB or AGM batteries, which can handle frequent restarts. If a standard battery is fitted, it will fail very quickly and the start-stop will not work properly. On some cars the new battery also has to be registered with the car's computer.
Car batteries in Chania
At the shop we test your battery and, if needed, replace it on the spot with the right one for your car. We have batteries for all makes, including cars with start-stop.
These tips are general. Every car has its own manufacturer specifications, so ask us about yours.