Retina Macbook and 15w Quick Charge

[attis]

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.

SUCCESS!

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.

 

[smacx]

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?

 

[attis]

Well, I don't live in the US, but this is probably the same as mine differing only in EU/US plug.

http://www.amazon.com/Samsung-Adaptive-Fast-Charger-Wall/dp/B00OM40K1Y

 

[jimboutilier]

And you'll likely want one of these (or something similar) too: http://www.amazon.com/gp/product/B00URK1V1U?psc=1&redirect=true&ref_=oh_aui_detailpage_o01_s00

I use this cable with my cell quick charger for AC sometimes as well as an Anker 4amp USB battery pack. Works ok until USB-C models readily become available (which is taking much longer then I would have thought).

 

[SteveJUAE]

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

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.

SUCCESS!

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.

 

[attis]

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

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;

 

[KPOM]

I wonder if this would work. It is 18W.

http://www.amazon.com/Qualcomm-Cert..._1_6?s=wireless&ie=UTF8&qid=1443400165&sr=1-6

 

[KPOM]

I wonder if this would work. It is 18W.

http://www.amazon.com/Qualcomm-Cert..._1_6?s=wireless&ie=UTF8&qid=1443400165&sr=1-6

I can confirm this works with a USB-A to USB-C cable. It kept my MacBook at 100% even with Parallels Desktop, Microsoft Outlook, Safari, and iTunes running.

 

[palmwangja]

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.

 

[gnatmm]

I pulled trigger on this https://www.amazon.it/gp/r.html?C=1...CEGICZABVH0A&ref_=pe_386201_126802001_TE_item