The 85w charger can charge 60w appliances, but the premise is that the voltage value of the two should be the same.
If the voltage value of the two is the same, the power of the 85w charger is greater than the power of 60w, that is, the output current of the 85w charger is greater than the working current of the 60w electrical appliance, which has met the conditions for charging the charger and the electrical appliance, and can be charged.
The power of the charger can not be less than the power of the electrical appliance, and the voltage value of the two should be the same, you can charge.