5 signs that your car battery is having problems and needs to be replaced
Car engines that are difficult to start, dim lights or battery warning lights that come on... are signs that the car battery is having problems and the owner needs to check and replace it.
The battery plays an important role in the operation of the car. However, similar to some details and parts on the car, the battery after a period of use often degrades or develops problems that can prevent the car from starting.
According to some car users, normally on popular car models, the battery often has problems after 2-3 years of use or after the car has been operated for about 20,000-25,000 km. If the car user does not pay attention to checking, when the battery has a problem, it can easily cause the car to not start or operate unstably and the risk of the car "lying on the road" and needing to call for help is very high.

Therefore, after a period of using the car, the car owner should pay attention to the following signs to recognize that the car battery is having problems and needs to be replaced:
Battery symbol warning light is on
The warning light with the battery symbol on the dashboard that comes on when the vehicle is running is one of the warning signs that the battery is having problems. This is the most recognizable sign, because when the warning light comes on, the driver should pay attention to stop the vehicle to check the battery condition.
Engine difficult to start or will not start
Not only when the warning light is on, if during the use of the car, the user finds that the car engine is difficult to start or even cannot start, it is also a sign that the car battery is having problems. The main cause is that the battery is weak or no longer able to generate electricity.

Dim headlights, lower brightness than normal
When driving at night, if you notice that the headlights are dim when other electrical systems such as air conditioning, power windows, etc. are turned on, it could also be a sign that the battery is not working effectively and there is a problem. When the battery is weak, the devices that use electricity in the car will also operate inefficiently and intermittently due to the unstable power source.
Battery makes strange noise
Unusual noises coming from the battery when starting the car, such as an unusually loud noise or a whirring sound, are also signs that there is a problem with the battery. The problem usually originates inside the battery and can lead to future battery-related damage.

Low voltage
In addition to the above signs, if you regularly check the battery status, users will also be able to recognize the battery status. Specifically, when the engine is running, if you measure the battery voltage and find that the voltage is quite low, it means that the battery is having problems or needs to be replaced.
During the use of the car, if the driver notices the above signs, he should quickly take the car to a service center or repair shop for inspection. Otherwise, the battery will gradually run out and no longer be able to generate electricity.