There are several possible reasons why your phone may be slow to charge:
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1 Slow charging when no standard charger and data cable is used: Products that support super fast charging must use the standard super fast charger and the standard data cable to be able to carry out super fast charging, and the use of other models of chargers and data cables is ordinary charging or can not be charged. If you use non-standard charger data cable, please replace it before charging
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2 Slow charging while using the phone while charging, the charger input part of the current needs to offset the screen and other mobile phone hardware consumption during use
Connect a charging power detector in series at the charging port to see whether it meets Huawei fast charge parameter standards. If the input power is normal, but the charging speed of the mobile phone is still very slow, it can be judged as a mobile phone problem.
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2. Use the original charger to charge other Huawei mobile phones that support the fast charge protocol. If the charged mobile phone cannot be charged quickly, it is a charger problem.