18650 lithium battery 2600mah

　　When should car batteries be replaced and how to prevent failures?

　　1. Car battery replacement time

　　1. The car is more difficult to start than usual

　　In the absence of other factors, if you suddenly find it difficult to start your car, it may be a sign that the battery is about to expire. Of course, there is another situation in winter, which is the so-called cold start difficulty in winter. This depends on whether the car is new or if it is almost time for the battery to expire.

　　2. The battery failure alarm light is on

　　There is not much to say about this, the fault light is a direct reminder. You really need to go to a 4S or repair shop to check whether the battery is damaged or the charging system is faulty.

　　3. When starting, the starting ability of the starter becomes poor and there is abnormal sound.

　　It may be due to the weakening of the battery's discharge capacity and the poor operation of the starter that it makes a squeaking sound. This situation is especially obvious at low temperatures. Because the weather is cold, the activity of the battery will also be reduced. This situation will improve or become worse after the weather gets warmer. disappeared, so many car owners didn't take it seriously.

　　4. Observe changes in the port

　　There is an observation port on many maintenance-free batteries. There is a light that shows whether the battery is working well. If it is green, it means good, and if it is black, it means the battery needs to be replaced. However, some car owners report that this light is unreliable and the vehicle cannot be started even if it is green. As a reference.

　　5. The battery bulges and leaks.

　　The main thing here is to see whether the battery is leaking or bulging. If such a situation occurs, it should be replaced in time. This situation not only brings problems with the battery life, but also certain safety hazards.

　　6. Voltage changes before and after starting

　　The normal voltage of the battery is about 12V. After starting, due to the charging of the generator, the voltage will increase to about 13-14V. Many vehicles have a voltage detection function. Paying attention to the voltage before and after starting is also a good way to judge the battery life. Vehicle If it is lower than 12V when not started or lower than 13V after starting, you should consider whether there is a problem with the battery. However, it does not rule out that the charging system is faulty.

　　2. How to prevent car battery failures

　　1. Charge the deeply depleted battery with a small current outside the vehicle.

　　2. Test vehicle and battery-related equipment to solve leakage and charger problems.

　　3. Frequently check the status of the connection between the wiring harness and the terminal post to keep it clean, dry and securely connected.

　　4. Develop good car usage habits and avoid excessive use of electricity when the engine is not running.

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