However, do not recommend long-term charging, otherwise it is easy to damage the battery.
The output voltage and current will be marked on the charging head of the mobile phone, and the power is equal to the voltage into the current, which can be calculated. For example, the mobile phone is marked with 5V2A, 5V3A, 9V3A, 12V1.5A, 11V3A, etc.
Here is an example of 5V2A, 5V2A represents the output DC voltage is 5V, the current is 2A, then the output power is equal to 5 times 2, that is, 10W, calculated in turn, you can get the power supported by the charger is 10W, 15W, 27W, 18W, 33W, etc.
If it has the charging power of its own phone, it can be used, if not, it is not recommended to use.
Non-vivo mobile phones, each mobile phone charger specifications may be different, it is recommended not to use non-original charger to charge the mobile phone, to avoid causing safety accidents.