If your engine cranks slowly when starting, it could mean your battery is weak. Also, if you hear a clicking sound when trying to start, it's a sign of a dying battery.
If your headlights dim or flicker while idling or using other electrical components, it's a sign of a weak battery. This happens because the battery can't provide enough power.
Many cars have a warning light on the dashboard for battery or charging system problems. If this light comes on, it's a sign that you should have your battery checked by a professional.
Problems like power windows operating slowly or erratically can indicate a failing battery. If your windows roll up or down slowly when the engine is on, it might be because the battery can't power them properly.
Needing to jump-start your car often suggests your battery isn't holding a charge effectively anymore. It's a sign that it might be time for a new battery.
If you see corrosion or a white, powdery substance on the battery terminals, it could mean your battery is having problems.
Car batteries typically last between 3 to 5 years. If yours is this old or older, it might be time to replace it preventatively before it fails unexpectedly.