To know whether the Miniso wireless multi-function Bluetooth speaker is fully charged, you can judge it in the following ways.
First, the speaker is usually equipped with a charging indicator light, when the speaker is connected to the power supply to charge, the indicator light will light up, and when the charging is complete, the indicator light will usually turn green or go out.
Secondly, you can understand the charging time by looking at the user manual of the speaker, in general, after the charging time reaches the specified time, the speaker should be fully charged.
Finally, you can try to use the speaker for a while, if the power continues to be stable, there is no significant drop, then the speaker can be considered to be fully charged.