The OnePlus 9 can use Huawei chargers, but it is recommended to use the same brand of chargers, because there may be differences in voltage or current between different brands of chargers, which may cause damage to the charger or damage to the battery.
In addition, the use of non-original charger may also have security risks, it is recommended to use the original charger to ensure safety.
Yes, the OnePlus 9 and Huawei chargers can be universal, but they may not achieve the best charging results. This is because different brands and models of chargers may have different output voltages and currents, and mobile phones need stable voltages and currents to charge properly. Therefore, it is recommended to use the same brand of charger. [DONE]