A car can run on fuel such as petrol or diesel, but the on-board battery is responsible for many crucial tasks. The primary purpose of a car battery is to provide power to start the vehicle. The car battery also acts as a surge protector for the vehicle’s on-board computer and provides power for short-term use of things like lights, stereo, GPS, or windshield wipers when the engine is off.
If a battery is malfunctioning or defective, the car may not start. Also, there would be various electrical problems because of it. Therefore, it is always recommended to take care of the battery, be it old or new. Always invest some time to inspect if the battery is working properly or needs replacement. A wide range of reasons lead to a battery problem, and you should keep an eye on your battery to see if it’s OK or if it needs to be replaced.
Also Read: How to Know When Your Motorcycle Needs an Engine Oil Change: Five Signs
In general, car batteries usually last three to four years. Factors such as heat, heavy use, and unsafe battery retention can affect the life of a battery. Here are some signs that your car needs a battery replacement.
Key signs of a faulty battery:
Zero response while turning the key – If a car doesn’t respond when you’re turning the key, it’s likely the battery acting up. If nothing happens and you don’t see any warning lights on the dashboard when you turn the key, make sure your car battery is dead and needs replacing.
Boot spins slower than normal – If you turn the car key, check if the starter turns slowly. Struggling to get started or hesitant? If the answer is yes, it’s time to have the battery checked by a mechanic.
Battery or charging system warning lights appear – Many modern cars have dedicated warning lights for the battery or charging system. If your vehicle has one and is showing the warning lights, it’s likely that the car’s system is trying to tell you that the battery is dead or about to die, and it’s time to replace it.
Dimmed headlights – Dimming headlights when the car’s engine is off can be a sign of a bad battery. Dimmed headlights when a car is running can indicate a bad alternator.
The battery is cracked or leaking – If the car battery is cracked, leaking or damaged, it should be replaced immediately to avoid critical damage to the car system.
How to know when your car needs a battery change
Zero response when turning the key
The starter motor turns slower than normal
Battery or charging system warning lights appear
The battery is cracked or leaking
Date of first publication: April 9, 2023, 4:20 PM IST
