What are the signs of a failing battery?


Post created: 7 August 2020

Over time, a battery can lose its capacity or ability to hold charge. When the battery is too weak to start the engine, the car will need to be jump started. The battery should be replaced before this happens.

But if your battery is not dead, then how do you know when it’s time to replace it?
Here are some common warning signs you can look out for:

  1. A clicking sound when you turn your key in the ignition

When the starter receives reduced or insufficient power from the battery, it often makes the clicking noise you’re hearing.

  1. Dim headlights

If your car battery is failing, it’s not going to be able to fully power your vehicle’s electrical components – including your headlights.

  1. The car is slow to start

This is the common symptom of a failing battery. If the engine cranks, makes a sluggish sound and takes longer than usual to start, then it’s time to get your battery tested.

  1. Corrosion on the terminals

If your battery is low and there is a layer of blue corrosion on the terminal then it is more than likely damaged.

Sometimes, a battery does simply reach the end of its life span or can indicate other underlying issues such as a failing alternator. A weakened battery can also indicate too much power drawn from lights, fuses, sound systems, alarms and more!