As the electric vehicle industry continues to be accepted by the society, the number of electric vehicles has now reached 140 million, accompanied by constantly equipped chargers. It is very important to maintain the electric vehicle chargers. Then, how to maintain it? ? 1. The charger is composed of transistors, integrated circuits, etc. Therefore, proper use of the charger will not only affect the reliability and service life of the charger itself, but also affect the service life of the battery. 2. When using the charger to charge the battery, please plug in the output plug of the charger first, and then the input plug. When charging, the power indicator of the charger is red, and the charging indicator is also red. When fully charged, the charging indicator light is green. When stopping charging, please unplug the input plug of the charger first, and then unplug the output plug of the charger. 3. Under normal circumstances, it is harmful to over-discharge and over-charge the battery. Therefore, it is necessary to charge frequently and not over-discharge. The charger produced by the regular manufacturer can ensure that the battery is not over-charged. The service life of the battery is closely related to the depth of discharge. Lead-acid batteries are especially afraid of losing electricity. If the battery is left for 3-7 days, it may be permanently damaged. Therefore, please charge the battery as soon as possible after use. For batteries that have not been used for a long time, they should be charged every 15 days or so. 4. The charger should be moisture-proof during use and placed in a well-ventilated place. There is a certain temperature rise when the charger is working, please pay attention to heat dissipation, usually the charging time is within 7-8 hours. It depends on the state of battery usage. 5. The charger is a more sophisticated electronic device, so please pay attention to anti-vibration during use. Try not to carry it with you. If you really want to carry it, you should pack the charger with shock-absorbing materials and place it in the tool box on the car.