How to Tell If a Car Battery Is Dying

How to Tell If a Car Battery Is Dying

Many people don’t know how to tell if their car battery is dying. They may see signs that it’s about to die, like the headlights dimming or headlights flickering when they’re on high beam but still think everything is okay with their battery.

This can be dangerous because it can lead to a dead battery while driving and make you stranded on the side of the road in an unsafe place! This article will go over 8 tips for telling if your car battery is dying so you don’t get stuck in a bad situation.

“Check Engine” Light On

If your check engine light is on, it can mean that there is a problem with the alternator or battery. This isn’t always the case though! It could be something small like an electrical connection needing to be checked out by a professional mechanic before you decide if it’s dangerous for driving or not.

Slow engine crank

If your engine cranks slowly when you turn the key, it could mean that there is not enough power to start up. This might be a sign of a dying battery or alternator issue! If this happens once in a while and then starts working again after trying twice or three times, don’t worry about it yet. However, if this is happening every time you try to start your car, come see us at O’Neill’s Garage.

Low Battery Light On Your Dashboard

If you turn your car on and the low battery light is on, it means that there isn’t enough power in your battery to start up. This can be a red flag, but again, if everything else seems okay with your car’s electrical system, then this could just mean that you need to get an automotive expert out to look at things before you decide what to do next.

Dimming Headlights or Flickering Lights When On High Beam

If your headlights start to get dimmer when you turn them on high beam or if they flicker like an old TV set, it could mean that the voltage in your car’s electrical system isn’t what it should be and that your battery may need to be replaced.

Checking Your Battery If you want to check and see if your car’s electrical system is in good shape, the easiest thing you can do is jump-start it yourself with another vehicle or jumper cables! You’ll know right away if there are any problems because either everything will normally work when jumped or the car won’t start.

Smell Something Rotten

If you smell something like rotten eggs coming from your car, it could mean that there is a problem with the battery and acid might be leaking out. This can be dangerous and cause injuries, so don’t try to jump-start your own vehicle or mess around with any part of the electrical system! Just bring it into O’Neill’s Garage and we’ll be glad to help you out.

But if your battery smells like rotten eggs, it will need to be replaced asap! Contact us for a replacement ASAP near the Garage before any serious problems with the electrical system could cause other kinds of damage.

 Battery Case Is Swollen

When the battery is subjected to severe hot or cold temperatures, the case’s sides may expand. If your battery’s casing seems swollen or abnormally large, it could mean that there is a problem with the electrical system. Don’t try to jump-start yourself because you could get electrocuted!

Battery Is Old

If your car’s battery is very old, it may be giving out and needing replacement. If you’ve had the same battery for a few years and never replaced it before, the chances are good that this could be what’s wrong!

Ignition Clicks

If you hear a clicking sound from under the hood but your car won’t start, it could mean that there is not enough power to turn on. This may be another sign that your car battery is dying. Again, this isn’t always bad! It may be something as simple as needing an electrical connection checked out by our professional mechanics before deciding whether or not it’s dangerous.


When it comes to telling if your battery is dying or not, there are many signs that you can look for! Knowing the common problems and what they mean about your battery will help you know when something just needs a quick fix by an automotive mechanic before getting stranded on the side of the road with no way home.

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