5 Warning Signs Your Car Battery is About to Fail

Nothing's more frustrating than getting ready to head out, only to find your car won't start because of a dead battery. Car batteries typically last 3-5 years, but their lifespan can be shortened by extreme temperatures (both hot and cold) and poor driving habits. Fortunately, batteries usually give warning signs before they completely fail.

Here are the top 5 signs your car battery might be on its last legs:

1. Slow Engine Crank

When you attempt to start the vehicle, the engine turns over slowly and takes longer than usual to start. This is often accompanied by a clicking sound. This sluggish start is one of the most common signs that your battery is losing its charge.

2. Check Engine Light

In many modern vehicles, a check engine light or specifically a battery warning light may illuminate when the battery is losing power or not charging properly. If this light comes on, it's best to have your electrical system checked as soon as possible.

3. Swollen Battery Case

Excessive heat can cause your battery case to swell and crack. If you notice your battery looks bloated or misshapen, it's time for a replacement, regardless of how well it seems to be performing.

4. Electrical Issues

If your car's electrical components (like headlights, interior lights, radio, power windows) are performing inconsistently or weakly, it could indicate your battery is failing. For example, if your headlights are dim when the engine is off but brighten when you rev the engine.

5. Rotten Egg Smell

A failing battery can leak gas, which often smells like rotten eggs or sulphur. If you notice this smell when you open your hood, have your battery checked immediately as leaking batteries can be dangerous.

What to Do If You Notice These Signs

If you've observed any of these warning signs, it's wise to have your battery tested by a professional. Many auto parts stores offer free battery testing, or you can call us at Car Batteries Roadside Perth 24/7 for on-the-spot testing and replacement if needed.

Remember, it's much better to replace a battery at your convenience than to be stranded with a dead battery at the worst possible moment!