MagSafe 2 voltage change

Discussion in 'MacBook Pro' started by shurcooL, Jun 18, 2012.

  1. shurcooL macrumors 6502a

    Jan 24, 2011
    Did anyone notice that while the original MagSafe power adapters were 16.5 Volts, the new MagSafe 2 ones are 20 Volts?

    That's kinda nice. Higher voltage allows for more efficiency.
  2. Stetrain macrumors 68040

    Feb 6, 2009
    Probably also explains why there's an adapter to use an old Magsafe with the newer laptops but no adapter to use a Magsafe 2 with an older laptop.

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