Choose the right charger and charging cable for my HUAWEI laptop
If the charger (adapter) or charging cable of your HUAWEI laptop is damaged, you can replace it with an appropriate charger or charging cable. This section describes how to select an appropriate adapter and charging cable for your HUAWEI laptop.
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Category |
Principle |
Identification Method |
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Charger |
Both of the following conditions are met:
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Charging cable |
Current-carrying capacity of the charging cable ≥ Input current required by the laptop |
Check the input voltage and current of the laptop
Check the label at the bottom of the laptop to confirm the input voltage and current required by the laptop.
As shown in the preceding figure, the input voltage of the laptop is 20 V, and the input current is 4.5 A.
Check the output voltage and current of the charger.
The output voltage of the charger on the left in the preceding figure is 20 V, and the output current is 4.5 A, which meets the voltage and current requirements of the laptop. Therefore, the charger can be used.
The output voltage of the charger on the right in the preceding figure is 11 V, and the output current is 6 A. The output voltage of the charger is less than the input voltage required by the laptop. Therefore, the charger is not recommended. (Faults such as slow charging and overheating may occur.)
Check the current-carrying capability of the charging cable.
The charging cable on the left in the preceding figure has a current-carrying capability of 5 A, which is greater than the 4.5 A required by the laptop. Therefore, the charging cable can be used.
The charging cable on the right in the preceding figure has a current-carrying capability of 3.3 A, which is less than the 4.5 A required by the laptop. Therefore, the charging cable is not recommended (which may cause faults such as slow charging and overheating).