Is there a secondary battery that store date and time etc.?

Discussion in 'MacBook Pro' started by steveLONDON, May 1, 2010.

  1. steveLONDON macrumors regular

    Jul 12, 2009
    You know in the old portables you had a removable battery and I think there was a separate smaller battery that could not be removed that would store your date and time and some other settings in the event of total power loss.

    Do the latest MBPs still have this and if so, what's the correct term for it?
  2. DivineEvil macrumors regular

    Feb 7, 2009
    Nope. They have only 1 big battery! I know this, because I've unplugged my battery to perform a mod, and when I started the OS again... the date/time was lost. Hopefully the minute I went online it got updated! Though I had to change my timezone.
  3. murdercitydevil macrumors 68000


    Feb 23, 2010
    if the logic board is anything like a regular motherboard, there should be the equivalent of a CMOS chip which stores things like that, but I kind of doubt it.

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