Generic A/C Adapter

I just bought a cheap ($15) generic adapter for my notebook.. Normally I wouldn't buy something like this but I have a new notebook arriving soon and I just needed something that would keep this old notebook going for another week or two.

It says 19.5v and 4.7a output on the brick, however when I tried testing the output with my multimeter it showed 19.7v but 15a!

Could that be right or am I getting a bad reading? My notebook is charging OK with no problems but I worry this could be dangerous.

The adapter is UL listed, but when I looked up the UL ID# on the UL site the model # doesn't exist. It looks like whoever manufactured this forged Delta Electronics' UL#.

 

It is difficult/impossible to correctly measure the potential/safe amperage capability of a power supply without bench equipment including a variable resistive load. A consumer-grade multimeter will NOT give you proper readings unless you're tearing into your equipment and measuring at points inside of your machine while it's turned on.

Bing search is probably your friend here to learn about the relationship between volts, amps, and watts and how to measure delivered/demanded currents at specific voltages.

 

Unless I'm mistaken, it will only push out the amps that are needed. That reading is saying that 15 is the most it can do.

 

OK, thanks guys. I don't have much experience using multimeters and I guess the webpage I had found about testing adapters with them was misinforming people about the ability to test amperage.