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Maintenance-free batteries actually eliminate the need for frequent addition of electrolyte, also known as distilled water. In theory, the lifespan of maintenance free batteries is generally 2-3 years. If used and maintained properly, it is not a problem to use them for more than 4 years. But if used and maintained improperly, even a few months can cause damage, so proper use and maintenance of batteries are very important.

1、 How to self inspect maintenance free batteries?

Some maintenance free batteries have observation holes that can visually reflect the current condition of the battery. By visually identifying the color inside the observation hole, green indicates normal, black indicates the battery needs to be charged, and white indicates the battery needs to be replaced. But identifying the condition of batteries through observation holes is sometimes not accurate, and there are also a large number of maintenance free batteries that do not have observation holes. So how should we check?

If you have a voltmeter on hand, you can measure the voltage after the vehicle has been left idle overnight. When the engine is turned off, if the voltage is higher than 12V, it indicates that the battery is in good condition. If it is lower than 12V, it indicates that the battery is low or its lifespan is approaching its limit, and it should be considered for inspection or replacement.

If there are no tools, you can turn on the headlights for inspection with the engine turned off. If the light is white, it indicates that the battery is normal; On the contrary, if the light is dim, it indicates that the battery is in poor condition and needs to go to a professional repair site for battery testing. In addition, when starting the engine, if the headlights become much dimmer compared to when the engine is turned off, or if the lights also become dimmer after turning on other electrical devices in the car, it also indicates that the battery is excessively discharged or the charging effect is poor, and needs to be replaced.

2、 How to protect batteries in daily use?

1. Before turning off the engine, pay attention to turning off the internal and external lights, air conditioning, and other electrical equipment of the vehicle:

After the vehicle is turned off, a large number of electrical equipment will still remain in operation, but at this time, the generator driven by the engine will stop generating electricity, and the electrical pressure of the electrical equipment will fall on the battery, releasing a large amount of current and causing certain harm to it, especially high-power electrical equipment such as air conditioning. Therefore, it is advisable to turn off all electrical equipment before turning off the engine.

In addition, after getting off the car, you should walk around the car to check if the vehicle lights have been completely turned off, to avoid the possibility of forgetting to turn off the lights, which may cause continuous discharge of the vehicle at night and lead to over discharge of the battery, affecting the start of the vehicle the next day.

2. Turn off electrical equipment before starting the vehicle:

At the moment the vehicle is started, the starter motor will consume a large amount of current from the battery. If other electrical devices are still on the vehicle, it will intensify the discharge of the battery, and the instantaneous high load current will be released. Over time, it will have an impact on its service life.

3. After the vehicle has been stationary for a long time, the vehicle should be started to charge the battery:

Even if the vehicle is not in use, the battery will still be in a slow discharge state. If the vehicle is not used for a long time, the battery's charge will gradually decrease until the vehicle cannot be started. A battery that is in a low charge for a long time will also have an impact on its service life. Therefore, after the vehicle has been stationary for a long time, it is advisable to occasionally start the vehicle to charge it, ensuring that the battery is always in a state of uninterrupted power.

4. Vehicles with automatic start stop function should pay more attention to the battery status:

With the gradual popularization of luxury features in cars, there are more and more high energy consuming devices such as seats and seat heating. Poor usage habits may cause more damage to batteries. Among them, if the vehicle has a self start stop function, frequent engine starting of the vehicle will increase the usage load of energy storage. Long periods of walking and stopping in urban areas, coupled with short driving distances, are highly likely to cause battery depletion. It is recommended to turn off the auto start stop function in traffic congestion or short driving distances to prevent situations where the battery is depleted and the vehicle cannot be started.

Write at the end:

For car batteries, the most important function is to power the starter motor and start the engine. If the battery is not working properly, it will not be able to start the vehicle and have a serious impact on travel plans. If it is located in a remote area, rescue work will be even more difficult. Therefore, it is necessary to regularly check the condition of the vehicle's battery to prevent the possibility of the vehicle not starting. Normally, the service life of maintenance free batteries is around 2-3 years. Even if the vehicle does not experience any inability to start, more professional charging and discharging tests should be carried out during maintenance. If there are any problems, they should be replaced in a timely manner.

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