Laptop Power Supply Replacement Q


  1. TV2
    Posts : 2,221
    W10 Pro 22H2
       New #1

    Laptop Power Supply Replacement Q


    I want to be sure my advice is correct.

    When replacing a modern laptop power supply, is it important that the voltage and the amperage of the new supply match the old supply exactly?

    She's got a replacement that is 4.74 amps and the original is 2.37. (for both the voltage is 19)
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  3. PolarNettles
    Posts : 809
    Win10
       New #2

    Voltage must match. Amperage of the new supply can be higher.

    The amperage rating on the supply is the maximum it can output. So if the laptop pulls 2A the supply will only output 2A regardless of the maximum rating.
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  4. TV2
    Posts : 2,221
    W10 Pro 22H2
    Thread Starter
       New #3

    Thanks for info.
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