Charging Macbook 12 with external USB battery pack?

Discussion in 'MacBook' started by pjny, Jun 29, 2015.

  1. pjny macrumors 6502a

    Feb 18, 2010
  2. nikster0029 macrumors 6502


    Jul 21, 2010
    The problem is that these devices cannot output enough energy to charge the device while using it. Even without using it, this device will take forever to charge.
  3. keviig macrumors 6502

    Jun 7, 2012
    Anything providing 2A/5V will either manage to sustain the charge of your Macbook while using it at medium load, or charge it at light load.

    Expect roughly 3x the charge time of the standard 29W charger when charging at 2A/5V (10W).
    This only applies to when you are not using the Macbook, as charging it while using it will take a very long time.

    Source: Personal experience with 2A/5V iPad charger and 2A/5V external battery pack.

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