1, check whether the phone is faulty, mobile phone system failure will lead to battery display problems, it is recommended to restart the phone;
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2, check the phone voltage problem, voltage instability will lead to abnormal charging, use wireless charger or reinsert the phone can;
3, check whether the contact is poor, the charger is not plugged in May lead to poor charging, reinsert can;
4, check whether it is the charger problem, put on another charger to try, if it can be charged, it means that the quality of the car charger is the problem, replace it.
5, the use of car charger precautions: must be in the car engine to start when you can charge; Do not use the car charger in a humid environment; Keep away from children; Avoid lightning strikes; After charging, pull out the plug in time; The appropriate temperature for use is 0 degrees to 45 degrees.