This can achieve a fast charge of 20 watts, but the charging speed is still so fast.
Do not do this, the 60 watt fast charge is easy to break the 20 watt mobile phone. The two output current is completely different, the power is completely different 60 watts of fast charge, the power is quite large, 20 watts of power is three times the difference with him, it is easy to charge the mobile phone bad battery and bulge, causing security risks, do not operate this way, I hope my answer can help you.