1.    4 Days Ago #1
    Join Date : Aug 2015
    Posts : 623
    W10 Home 1709

    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)
      My ComputerSystem Spec
  2.    4 Days Ago #2
    Join Date : Oct 2017
    Posts : 180
    Win10

    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.
      My ComputerSystem Spec
  3.    4 Days Ago #3
    Join Date : Aug 2015
    Posts : 623
    W10 Home 1709
    Thread Starter

    Thanks for info.
      My ComputerSystem Spec

 


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