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Stupid question re amperes

  1. Sep 10, 2007 #1
    So, I find myself without the AC adapter for my laptop and I need power.

    My adapter is rated 19.5v 4.7a.

    I have an adapter from an older machine (same manufacturer), rated 19.5v 3a.

    The physical connection to the laptop is the same.

    Will I damage the laptop and/or the battery if I use this lower rated adapter?

    Or will the battery simply charge slower?
  2. jcsd
  3. Sep 10, 2007 #2


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    Science Advisor
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    Insufficient information to tell you anything certain.

    There is a good possibility you would damage the lower power adapter as it gets overloaded.
    If the adapter fails it could damage the computer.
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