Maintenance Useful tips

How long will a car battery last, and when should you replace it?

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How long is the life of a car battery?
Here, I will write about the signs of the end of the life of the battery, and the ideal time to exchange it.

Life of a car's battery

The lifetime of a typical battery is about two to five years in an ordinary gasoline car.
The reason that it varies from two to five years is that the lifetime of the battery depends on how the person uses their car.

In addition, the lifespan also changes with the quality of the battery. If the price is cheap, its life may be short.

What are the patterns that will shorten the life expectancy?

In the case of the following usage, the possibility of shortening the life of the car battery will increase.

Not driving the car often

If you use the car infrequently, you might think that the battery will last a long time, but this is not necessarily the case.
The battery uses electricity to run the car, but at the same time, when the car runs, a generator called the "alternator" runs and the battery is charged.

However, when the vehicle is not used for a long time, the alternator does not operate, so the battery is not charged. But because a little bit of power is always being used for locking and security, the power of the battery will gradually decrease.
This may shorten the life of the battery.

Night-driving often

When driving at night, the battery charge will gradually decrease due to heavy use of the headlights. If you drive at night often, it can cause a shortening of battery life.

Frequent travelling over short distances

When starting the engine, a starter motor that uses a lot of power engages.

Normally there is no problem, but when repeatedly travelling short distances, the engine is stopped before the battery has a chance to be charged by the alternator. Repeating this will cause the battery power to decrease, and will shorten the battery life.

Is the lifespan different between gasoline and hybrid cars?

Two kinds of batteries are installed in a hybrid car.
One is a "driving battery" for driving a car.

This battery has a very high voltage to drive the car.
The lifespan of this battery is supposed to be 5 years or 100,000 km, according to the manufacturer's warranty, but in fact it is said to last up to 200,000 km.
Starting the engine uses this battery.

The other is a battery of the same size as the battery installed in gasoline-powered cars, and in hybrid vehicles it is called "auxiliary machine battery".

Since gasoline cars have only this battery, they are also used to start the engine, but because hybrid cars do not use this battery to start the engine, it is said that the auxiliary battery of a hybrid car has a slightly longer life expectancy than the battery of a gasoline car.

To extend the lifespan even a little

Avoid over discharge

If you try to start a car after months of not using it, what often happens is that the engine will not start.
This is due to over discharge.

To avoid over discharge, you should run the car engine for at least an hour per week.

Check the battery fluid

Battery fluid will decrease by evaporation or electrolysis, so check periodically to make sure it is not below the lower limit level.
If it is decreasing, replenish the battery solution to the upper limit level.

Continued failure to replenish the battery fluid will result in the battery not being able to hold a charge.

Signs of the end of the battery life

In order to prevent an unexpected dead battery, you should know the signs that it is near the end of its life.

The starter motor turns weakly

If the starter motor turns more weakly than usual or the engine does not start immediately, there is a possibility that the starter motor is broken, but in many cases the battery is the cause.

The headlights are dim

If while driving the headlights are as bright as usual, but they become dim when stopped, there is a high possibility that the battery is weak.
While running, the power generation of the alternator allows the lights to be as bright as usual, but they become dim when stopped, as they only receive the charge from the battery when the car is not running.

An additional sign that the battery is weakening is if the movements of the electrical system become weak, such as a slowing of the movement of electric-windows or a weakening of the sound of the horn.

Battery life expectancy

A battery's general life expectancy is said to be 2-5 years.
If you have been using a battery for more than 2 years, there is a possibility that the battery will come to the end of its life in the near future.

Battery is bulging

When a battery is bulging, problems are occurring inside the battery. This should be checked immediately.




We should not not forget that batteries have a life expectancy.
If you neglect inspection, the battery will die and the car will suddenly stop moving.
Try not to overlook the signs, so that you will not encounter an unexpected flat

-Maintenance, Useful tips

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