Your Quality Vehicle Servicing Specialist

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10A MOSELLE ave
henderson, auckland

09 837 1723

Car Batteries explained easily

Car batteries are one of those things people have a hard time wrapping their head around. They can be expensive to replace, so you want to look after them as best you can. Get the most out of your car batteries by knowing more about them!

Why does my battery die when I leave the lights on, but I can drive for hours and everything is fine?

Many people wonder about this weird feature of their car, but feel too stupid to ask. The battery is basically used to start the car, not run it. Once the car has started, the engine starts burning petrol and powers the alternator. It’s the alternator that provides electricity to the lights, not the battery. So as long as the car is running, car batteries don’t really do much. It’s only when the car is sitting and you leave the lights on, that’s when the battery is working, and it will drain quickly.

My battery went flat and I jump started it- it’s ok now, right?

Unfortunately not. Just driving about after jump-starting your car won’t make your battery charge up again. You need to take it to a professional and have it charged up properly. With a little luck you should bring it back to full life and have no more problems with it.

Can my battery affect my kilometres per tank?

Absolutely, yes. If your car battery is running flat, then the alternator will have to work harder to compensate for it. The harder it works, means the more the engine has to work to power it, and the harder the engine works the more fuel you use.

Will my battery drain if I don’t use my car at all?

Yes, it will. Car batteries will last a few weeks, and if your car is sitting in a garage, or even worse, outside, for long periods of time, the battery will eventually go flat. Car batteries lose charge because even if the car is switch off, they still keep the vehicle’s electrical system going. This small amount adds up over time.

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