There are several warning signs that indicate your car battery may be failing and needs to be replaced. One of the most common symptoms is slow engine cranking. If you notice that your car takes longer than usual to start, or if the engine struggles to turn over, it may be a sign that the battery no longer holds a charge effectively. Additionally, a clicking sound when turning the key could mean the battery is too weak to power the starter motor.
Another red flag is dim or flickering headlights. Since the battery supplies power to all electrical components, weak or inconsistent lighting can be a sign that the battery is deteriorating. You may also experience electrical malfunctions, such as power windows moving sluggishly, radio or dashboard lights acting erratically, or issues with climate control.
Most modern vehicles also have a battery warning light on the dashboard. If this light turns on, it signals a charging system issue, which could mean the battery is failing or the alternator is not recharging it properly. If you notice corrosion on the battery terminals, a bloated battery case, or a rotten egg smell coming from under the hood, these are further signs that your battery is damaged and may need immediate replacement.
If you are experiencing any of these symptoms, it is essential to test the battery’s voltage. A healthy car battery should measure around 12.6 volts when the engine is off and between 13.7 to 14.7 volts when running. If the voltage is lower, it may be time for a Car Battery replacement to avoid getting stranded unexpectedly.