What is the service life of a typical maintenance-free battery?

Generally, the service life in the new car is about 3-4 years, and the service life after about one replacement is about 2 years.

Maintenance free battery

Definition:

The sealed maintenance-free battery adopts the newly designed fully sealed structure and modern production process in the 1990s. It provides high performance, long life, pollution-free, maintenance-free, safe and reliable performance.

2, correct maintenance, the correct use and maintenance of the battery has the following 7 points:

Check if the fixing bolt of the battery on the bracket is tight. If the installation is not reliable, the housing will be damaged due to the running vibration. Also, do not place metal objects on the battery to prevent short circuits.

Always check the connection between the pole and the terminal for reliability. To prevent oxidation of the terminal, a protective agent such as petroleum jelly can be applied.

It is not possible to check the battery's charge by direct ignition (short-circuit test), which may cause damage to the battery.

Ordinary lead-acid batteries should pay attention to the regular addition of distilled water. The dry charge battery should be properly charged before use. As for the maintenance-free battery that can be added with water, it is not impossible to maintain proper inspection. If necessary, supplement the distilled water to help extend the service life.

The air holes on the battery cover should be clear. When the battery is charged, a large amount of air bubbles will be generated. If the vent hole is blocked, the gas cannot escape. When the pressure is increased to a certain extent, the battery case will burst.

There is often a yellow-white paste around the battery pole and the cover, because sulfuric acid corrodes the root column, line card, fixing frame, and the like. The resistance of these substances is very large and should be removed in time.

When the two batteries need to be used in series, the capacity of the batteries is preferably equal. Otherwise it will affect the battery life.

We all know that every component in the car has a service life, and the battery is the same. The battery function includes: when the vehicle is ready to be started, the battery is discharged to the starter, and the starter drives the flywheel and the crankshaft to rotate, thereby starting the vehicle. When the engine is under-powered or not started, power is supplied to the interior electrical appliances such as the sound system, the lighting system, etc. When the engine starts to supply power normally, the battery collects and stores the electrical energy for later use.

Today, automotive batteries can be broadly classified into maintenance-free and general-purpose batteries (not maintenance-free). Most of the models currently on the market use maintenance-free batteries, and most Japanese cars use non-maintenance batteries, which are ordinary batteries.

A common battery is also called a lead-acid battery, and its electrode is composed of an oxide of lead and lead, and the electrolyte is an aqueous solution of sulfuric acid. The main advantage is that the voltage is stable and the price is cheap; the disadvantage is frequent daily maintenance. Old-fashioned ordinary batteries generally have a life span of about 2 years, and it is necessary to regularly check the height of the electrolyte and add distilled water.

Maintenance-free batteries, as the name suggests, are the most maintenance-free. It is basically unnecessary to replenish distilled water during the service life. It also has the characteristics of shock resistance, high temperature resistance, small size and small self-discharge. Of course, its price will be more expensive than ordinary batteries. As for the service life, the recommended replacement period for maintenance-free batteries under normal conditions is about 3 years.

From the point of view of use and maintenance, whether your car is equipped with a maintenance-free battery or an ordinary battery, the normal service life is about 2-3 years, if you use it, it is 3 to 4 years, and the mileage is 6 to 90,000 kilometers. If you feel that you are not getting electricity or the starter is weak, the headlights are obviously darker. You need to take the battery off and charge it with the charger for 12-24 hours. If it still doesn't work, the mileage will reach more than 50,000 kilometers, and the generator is not faulty. You need to consider changing the battery. ,

Good two or three years or even longer, the next product is difficult to say. But you and the repair shop people can be replaced during the warranty period. Free. The color of the electrolyte has three red green and yellow electrolyte colors can pass The window hole can observe that the green represents the normal battery life is generally about two years, causing battery damage for many reasons:

1: excessive discharge

2: The battery is stored for a long time (not charged during storage)

3: Can't charge by car engine

4: no electrolyte

5: The electrolyte is too high

6: Charging under high temperature conditions

7: Contaminated (such as contaminated by hydrochloric acid, sea water, organic acids, etc.)

8: Add excessive current when charging the battery

9: The deformation of the electrode plate causes the positive electrode plate and the cladding plate to contact each other, thereby causing a short circuit phenomenon.

10: dirt is deposited on the upper and lower parts of the pole, causing a short circuit

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