Retina Macbook and 15w Quick Charge

Discussion in 'MacBook' started by attis, Sep 24, 2015.

  1. attis macrumors member

    Nov 18, 2012
    For a few weeks I've looked for a USB-charger that could keep my 12" Macbook topped up when on the go. But all 2.1 / 2.4 A chargers fall 4-6 Watts short and the battery in the Macbook slowly drains while using, and the charging when closed is real slow. I've gotten best results with a Powergorilla Minigorilla with iPad adapter that slowly puts juice in the Macbook when in my bag.

    But after looking for 3A chargers online without success, I thought, why not try one of those usually-only-for-android-users-with-huge-phones-quick-charge-things. Since the USB-C charger that comes with the Macbook is way more than 5V, some Android phones have USB-C too, and the Macbook seems to accept most power sources, I thought there might be a small chance of it working.


    I'm now powering my Macbook with a (really tiny I might add) Samsung USB charger, and charging with 2-5 Watts at the same time. When the Macbook is closed, it seems to charge as fast as my 15" RMBP with a 60 W (13") Magsafe charger. Now I can leave the 29 W charger at home and use ONE power source for my Macbook, iPhone, Wifi hotspot and bluetooth speaker! Sure, still a clutter of cables, but thats an issue for another time.
  2. smacx macrumors newbie

    Jan 2, 2013
    Well, congratulations. I am also searching for a USB charger that can really charge my MacBook.
    Could you please link the actual product so that I can also buy it?
  3. attis thread starter macrumors member

    Nov 18, 2012
  4. jimboutilier macrumors 6502a

    Nov 10, 2008
  5. SteveJUAE macrumors 68020


    Aug 14, 2015
    Land of Smiles
    It must be a bit slower than the supplied Apple charger ?

    Apple 110/240v 14.5v - 2.0A or 5.2v - 2.4A

    Samsung 110/240v 9.0v - 1.67A or 5.0v - 2.0A

    It's a bit smaller than the Apple charger as it does not have the wall extension socket


    But a good solution to only carry one power supply for multiple products

  6. attis thread starter macrumors member

    Nov 18, 2012
    Of course it's slower - it's only up to 15 W, unlike the 29 W Apple charger. The math seems to translate to about double charge times in real life. Also, the EU-version is even smaller than the UK (?) one, I would say 1/3 the volume. And then there's the benefit of a standard USB outlet and not only USB-C;
  7. KPOM macrumors G5

    Oct 23, 2010
  8. palmwangja macrumors regular


    Apr 12, 2015
    It's weird, my samsung Adaptive Fast Charger can only give me 2 Watts, compared to 12W of iPad Charger.
    Anybody has any comment on this problems?

    I tried many cables, but the result was same.

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