1. Check whether the charging interface is loose. Since the vehicle is usually shaken during driving, it may be that the charging interface is shaken and loosened, resulting in no access to the power supply and no charging;
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two
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Check whether the electrical equipment needs high power input to work normally, it may be that the output power of the car charger can not meet the requirements of the electrical equipment, resulting in a long time to charge the power is not up;
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three
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Sometimes the output of the car charger is not stable enough, and most electronic products have a self-protection mechanism to avoid the high and low current to destroy the device itself, so it will not be charged.
The reasons are as follows: 1, the compatibility mode level has a problem, which will cause the cigarette lighter to be paired with the car charger, and the situation will be broken for a while.
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2, the car charger and the cigarette lighter in the middle of the bad contact phenomenon, resulting in no reflection of the car charger, so in the case of the installation of the car charger, it is necessary to ensure that it is fixed in time, when you hear a \"da\" in the process of installation is timely.
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3, the vehicle cigarette lighter problem, at this moment we must apply the original cigarette lighter to distinguish whether the jack is running normally.