How does the battery drain...

Discussion in 'MacBook Pro' started by mike 2011, Apr 16, 2011.

  1. mike 2011 macrumors newbie

    Joined:
    Feb 24, 2011
    #1
    with respect to having an external device that pulls power, say, from the USB port? Does the device pull energy from the battery, and then the battery is resupplied from the adapter? Or is the juice going straight from the adapter to the device? I'm just curious if having an external device, such as a cooling base with USB powered fans, places undue stress on the battery when the adapter is plugged in.
     
  2. ViciousShadow21 macrumors 68020

    ViciousShadow21

    Joined:
    Mar 11, 2009
    Location:
    To your left or right
    #2
    no, it will not put the battery under any undue stress.
     
  3. vincenz macrumors 601

    vincenz

    Joined:
    Oct 20, 2008
    #3
    No it wouldn't stress the battery at all. They wouldn't design laptop computers to work like that; it wouldn't make sense.
     
  4. GGJstudios macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #4

Share This Page