1A and 2A are the rated output currents of the power adapter, 1A means that it can work for a long time, and the maximum current output 1A, 2A means that it can work for a long time, and the maximum current output is 2 A. ..

The difference of rated output current is the biggest difference of this power supply.

If the actual current required when the skimmer works is 0.8A, then if the power supply of 1A is used, the load rate of the power supply is 0.8/ 1=80%, while it is 0.8/2=40% when the power supply of 2A is used. Low load rate means lower heating and safer.