When looking for a replacement AC power adapter, should amps be considered or just volts?

Answer 1

Yes, the amperage rating of the adapter should be at or above what the device will draw (or the original adapter rating).

The voltage should be as close as possible to the original. Also, make sure you get the correct type (AC or DC).

Finally, you'll want to get the correct plug for it. If the old one is broken, just cut it off the old one and splice to the new adapter.

Answer 2

Hello:

You should consider both current and voltage. Also, some adapters are rated in voltage and power, such as 19.5V, 75W. That's the way my Compaq Presario 2100 is rated. Although you can do the math and obtain the current draw from the power and voltage, you don't need to do that if you can find a proper replacement.

I googled my laptop when I lost the power supply for it and found the exact replacement for something like $30.

BTW, unless you are familiar with polarity and how to tell if you wired the connector for the correct polarity, I do not recommend splicing your own plugs on power supplies. There is no universal polarity on DC supplies- some are center-negative and some are center-positive. If you have a DC supply and wire it backwards, there is a chance you will damage your laptop. If you understand electricity well enough, and have a multimeter to test your connection with, go right ahead. Otherwise, I suggest you buy a replacement that was designed for your machine.

Cheers!