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Will this laptop charger destroy my system?

  • 09-03-2009 6:51pm
    #1
    ccosgrave
    Closed Accounts Posts: 370 ✭✭


    Hi, I just got a new laptop charger off eBay, but I just compared the specifications on it with those of the old charger. Everything seems to be the same, except for one figure.

    AC Adapter Model: PA-1700-02
    Input: 100-240 V~ 1.8A 50-60Hz
    Output: 19V 3.42A

    The input value listed as 1.8A is actually 1.5A on my old charger. This seems to be a relatively large difference between the two, so I'm worried that something might happen if I attempt to use it.

    I couldn't find anywhere that sold this kind of charger - PC World didn't have any either - so I just tried eBay. In the description for the item, all the figures it listed matched exactly those on the old charger. In addition, the item's title and description had the model of my laptop in it. As a result, I didn't see anything particularly wrong with ordering from there, and I really need my laptop for college, so I figured it was my best option.

    Now, I don't really know much about this sort of thing, but my first instincts would be that the differing input values wouldn't really matter or affect my laptop, but that a differing output value would have an effect. Surely, if 3.42A is going into the laptop from the AC adapter, then the size of the charge going into it is irrelevant, right? Again, I haven't really much of a notion about this sort of thing, I'm merely guessing.

    Thanks in advance for your help.


Comments

  • #2
    Voodu Child
    Closed Accounts Posts: 6,706 ✭✭✭Voodu Child


    The output is what you're concerned with. It must by equal in voltage, and equal or greater in max current rating (A).

    The input current (1.8A) just means the PSU has the potential to draw that amount of current from the wall. It doesnt effect your laptop.


  • #3
    Ghost Train
    Registered Users Posts: 30,021 ✭✭✭✭Ghost Train


    What voodoo said is right

    its more the output value that you should be concerned with

    3.42A should be higher than what the laptop needs

    if the laptop was using 3.7A then the adapter would fail, if its using 2A or anything under 3.4A then theres no problem


  • #4
    ccosgrave
    Closed Accounts Posts: 370 ✭✭ccosgrave


    Excellent! Thanks very much for your help!


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