How long does it take to fully charge the rMB?

Discussion in 'MacBook' started by mgpg89, Apr 20, 2015.

  1. mgpg89 macrumors 6502a


    Aug 31, 2008
    Simple question, really.
    It should be charged significantly faster than other MacBooks, right?
  2. Geert76 macrumors 65816

    Feb 28, 2014
    the Netherlands
    Why would it charge faster than other Macbook's?
  3. keviig macrumors 6502

    Jun 7, 2012
    I doubt it will be much faster than other macbooks.

    Macbook 12": 39.7 Wh battery - 29 W charger (39.7/29=1.32=1 hr 21 min)

    Retina Macbook Pro 13": 74.9 Wh battery - 60W charger (74.9/60=1.24=1 hr 14 min)

    So it might actually be slower.
    It won't charge as quick as what i calculated it to though, as typically the last 20% charge of any battery is significantly slower. But this should apply equally to all Macbooks.
  4. Hankster macrumors 68020


    Jan 30, 2008
    Washington DC
    I causally tested this last week. These numbers are not exact, but from my experience my rMB charges at about 1% a minute when my laptop is open and charging. When it's closed it's almost 2% a minute. Not sure how fast if the machine is shut off.

    Overall, it's the same feel as my MBA and it's certainly charges fast enough.
  5. dmac20 macrumors newbie

    Mar 12, 2015
    Did you guys do any specific sort of a first long charge after receiving your macbook and using it for the first time? or just plugged it in and used it at the same time, no worries?
  6. Idefix macrumors 6502

    Jul 10, 2012
    Here's what 9to5Mac says:

    "In terms of battery life, Apple promises up to 9 hours of wireless web usage and up to 10 hours of iTunes playback. In my actual (multitasking-heavy) usage, I measured 4 hours 35 minutes between 100% to 2% during continuous usage. Under the same use, the system said to expect 3 hours 57 minutes until a full charge was reached from 2%, although in practice only required 2 hours 22 minutes to reach 100%."

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