Yes, the OnePlus charger cannot charge Huawei headphones.
1. Because OnePlus chargers and Huawei earphones use different charging ports, the OnePlus charger is designed for OnePlus mobile phones, while Huawei earphones use Micro USB or USB-C ports, so the OnePlus charger cannot directly provide appropriate current and voltage for Huawei earphones to charge.
2. Although the OnePlus charger may match the interface of the Huawei headset, the charging effect and safety cannot be guaranteed due to the different characteristics of the power output.
Using a mismatched charger can cause your headphones to charge slowly, get hot, or even get damaged.
Therefore, if you want to charge Huawei headphones, you are advised to use a Huawei charger or a compatible charging device to ensure charging stability and security.
As long as it is an Android device, and the charging interface is Type-C, it can be charged.