Question

Wanting to use another laptop PSU with current laptop.

Hello everyone, I have a alternate laptop PSU that I am hoping is compatible with my current laptop. The factory one is failing on me. I would have posted pics for this, but I didn't see any options to do it...

I am copying exactly what the ratings are on each. The factory/failing unit is rated,

INPUT: 100-240V ~ 50-60Hz 2.0A
OUTPUT: 19v == 6.32A. - C---+

The alternate supply that I'm hoping will work is rated,

INPUT: 100-240v~2.5A
OUTPUT: 19V == 4.74A

Now that I'm actually seeing them side by side, I'm thinking the output Amp 4.74A might be an issue? But, since I know that just a hairs difference can turn things really bad really quick, I'm hoping I can get a expert opinion/answer to it.

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Answer
Re: PSU

I'd buy a matching one. It's the difference between 90 and 120 W. Modern laptops do with 65 W, but yours not, apparently.

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Answer
Duplicate. This is a deeper rabbit hole.

Why the wide miss of Amperes means it's not a proper supply the new Dells and many other models do not charge the laptop without a third wire. It's pretty technical but the short version is you no longer can connect up any old power supply. There are not so new safeguards where the PSU and laptop "link up" and have a chat about make and model before starting a charge.

https://electronics.stackexchange.com/questions/327909/3-wires-on-a-bipolar-dc-plug-what-are-they-for dives into this. WHY? Because of battery fires.

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