If you want to check the quality of the millet electric toothbrush wireless charging seat, you can first observe whether the appearance of the charging seat is obviously damaged or deformed.
Secondly, you can use a voltmeter or multimeter to test whether the charging base output voltage is normal, generally it should be about 5V under normal circumstances.
In addition, you can also check whether there is loosening or poor contact by gently shaking the charging base after connecting to the power supply. If the above test results are normal, then the charging seat is good, otherwise it needs to be replaced or repaired.