Amp's don't matter, right?

[Hawx]

I'm about to repair a corrupt boot file on a friends laptop, and intend to use my universal power adapter that I use for an older laptop in my house (after the original power brick died).

Both require a 19V input, and the DC adapters match up, but my friends laptop takes 3.5A while my older one takes 4.34A.

 

Am I safe to assume that the Amps don't matter? I'm pretty sure it's what the guy said when he sold me the universal adapter a few years ago.

[ShadowCaptain]

I believe it will just charge slower....

[magic]

It'll only draw the amount of power(A) it needs, if it's not there it won't work too well but if you have more than 4.3A available it should be fine

 

Voltage is the important bit

[Goldilock]

As much as I know about electronic, the voltage is the only that does matter or rather the voltage swing that may be caused by universal adapter. JDS Lab as example will void your amplifier warranty if you use universal adapter.

[Hawx]

Alrighty, cheers

[airdeano]

amps is always matters.

 

voltage times amps equals watts.

watts divided by voltage equals amps.