The vivoy9s supports wireless charging. The capacity of a battery is called 1C, and it can be seen that 1C is only a logical concept, and the same 1C is not equal. When charging, when the charging current is less than 0.1C, it is called trickle charging. As the name suggests, it means that the current is very small. In general, trickle charging can charge the battery very fully without harming the battery life, but the time taken to charge with trickle is too long, so it is rarely used alone, but in combination with other charging methods.