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chad.petree

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Feb 2, 2013
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The MacBook cokes with a 29w charger which I think it's nothing to write home about , why doesnt apple include a higher capacity charger with it ? Google's pixel c includes a 60w charger for example , as far as I know USB type can deliver up to 100w so why are we not seeing such chargers ? Also , let's say I get Google's 60w charger , will the MacBook charger faster with it ? Why isn't there some sort of quick charge like on devices with Qualcomms CPUs ?
 
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KPOM

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Oct 23, 2010
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The MacBook cokes with a 29w charger which I think it's nothing to write home about , why doesnt apple include a higher capacity charger with it ? Google's pixel c includes a 60w charger for example , as far as I know USB type can deliver up to 100w so why are we not seeing such chargers ? Also , let's say o get Google's 60w charger , will the MacBook charger faster with it ? Why isn't there some sort of quick charge like on devices with Qualcomms CPUs ?

To be fully USB-C compliant, a device cannot support non-standard power delivery protocols such as Qualcomm's Quick Charge. However, I do not know whether or not the MacBook will charge faster with a more powerful charger such as the one that ships with Google's Pixel C. Just because USB-C is capable of delivering up to a 100W charge does not mean that the device can accept that much. Apple may have limited it to a 29W charger out of concerns of overheating since the MacBook has a thinner and smaller profile than the Pixel C, and thus less volume over which to dissipate heat generated by the charging process.
 
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zhenya

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The size of the charger is dictated not only by how fast they want to charge the battery, but also by what the maximum draw the device can have on its own driving the screen, cpu, gpu, etc. ie. if you want to charge with a maximum of 30w and the device can also use 30w at full tilt, you need a 60w charger. It's hard to get the rMB to use more than about 10-12w for any period of time, so the 29w charger is more than adequate and saves weight and space. The rMB charges from ~20-80% in about an hour so I have no issues with the charging speed.
 
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chad.petree

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Feb 2, 2013
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To be fully USB-C compliant, a device cannot support non-standard power delivery protocols such as Qualcomm's Quick Charge. However, I do not know whether or not the MacBook will charge faster with a more powerful charger such as the one that ships with Google's Pixel C. Just because USB-C is capable of delivering up to a 100W charge does not mean that the device can accept that much. Apple may have limited it to a 29W charger out of concerns of overheating since the MacBook has a thinner and smaller profile than the Pixel C, and thus less volume over which to dissipate heat generated by the charging process.
So in theory pretty much all of the new Android devices : HTC 10 , LG G5, Moto Z , Nexus 6P are not fully USB c compliant ?
 
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chad.petree

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Feb 2, 2013
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And why is that such a bad Thing? (I'm not trying to be cheeky)

I got recently a dell XPS 15 and it comes with a propietary charger which has 130 W :O , using the macbook charger to charger would take forever or it wouln't charge at all because the wattage is too low right? Wow it's impossible to Charge it at full Speed because 30 W is more than the current usb c power Limit (100 W) :(
 
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KPOM

macrumors P6
Oct 23, 2010
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And why is that such a bad Thing? (I'm not trying to be cheeky)

I got recently a dell XPS 15 and it comes with a propietary charger which has 130 W :O , using the macbook charger to charger would take forever or it wouln't charge at all because the wattage is too low right? Wow it's impossible to Charge it at full Speed because 30 W is more than the current usb c power Limit (100 W) :(
I don't know the technical reasons, but USB-C has specific power delivery requirements that don't allow for proprietary alternative fast charging specs. Of course that doesn't stop manufacturers from using them, but then they can't assert full USB-C power delivery compliance.

Whether the MacBook charger would work depends on the port on the Dell. If it registers as a USB-C power delivery-compliant port, the MacBook charger will give it 29W charge as it would a MacBook or 12.9" iPad Pro. However, if it detects a "non-standard" port it will default to USB-A power delivery (and I think 5W at that).
 
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chad.petree

macrumors 6502
Original poster
Feb 2, 2013
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Germany
I don't know the technical reasons, but USB-C has specific power delivery requirements that don't allow for proprietary alternative fast charging specs. Of course that doesn't stop manufacturers from using them, but then they can't assert full USB-C power delivery compliance.

Whether the MacBook charger would work depends on the port on the Dell. If it registers as a USB-C power delivery-compliant port, the MacBook charger will give it 29W charge as it would a MacBook or 12.9" iPad Pro. However, if it detects a "non-standard" port it will default to USB-A power delivery (and I think 5W at that).

I actually had something "weird" the other way around, I tried charging my Nexus 6P with a macbook charger and it worked but it charged so langsam, like at regular usb 2.0 Charge Speeds, I'm assuming that "rapid Charge" has nothing to do with the wattage, because the macbook charger has more than enough power to Charge the Nexus 6P pretty quick.
 
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