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Why Anker charger and Nekteck Type C to Type A cable only charging at 1550mA max?

I have the Anker PowerPort 2 that has a max of 2.4 amps per port and a Nekteck USB Type C to Type A cable (that's tested and approved by Benson). When trying to charge, the max mA that I've seen is around 1550mA.
Why is that? I was expecting around the max of ~2400,mA

I actually ordered this exact combo on Amazon, curious to test it myself.
Are you using Ampere to measure? If so, before plugging in the cable, you need to note the discharging rate (some negative mA). Then plug in the phone and note the charging rate. You have to add the two numbers together to get the actual amperage from the charger because Ampere can only measure the overall system in/out amperage. So if you were doing something really intensive and plugged into a slow charger, you may see it say "Charging" but have a negative number!

BillyTheRatKing said:
I actually ordered this exact combo on Amazon, curious to test it myself.
Are you using Ampere to measure? If so, before plugging in the cable, you need to note the discharging rate (some negative mA). Then plug in the phone and note the charging rate. You have to add the two numbers together to get the actual amperage from the charger because Ampere can only measure the overall system in/out amperage. So if you were doing something really intensive and plugged into a slow charger, you may see it say "Charging" but have a negative number!
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I forgot to mention that stuff! Yes, I am using Ampere and discharge is around -150 to -300mA. The average discharge rate and average charge rate added together (around ~1800mA) still comes up quite a bit short. Hope the combo works out for you. Or at least confirm my findings.

trama09 said:
I forgot to mention that stuff! Yes, I am using Ampere and discharge is around -150 to -300mA. The average discharge rate and average charge rate added together (around ~1800mA) still comes up quite a bit short. Hope the combo works out for you. Or at least confirm my findings.
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Huh... I wish that Google engineer would clarify things. Myself and others have been discussing the Type-C spec over here and the documents seem to indicate that a Type-A to Type-C cable that has the proper identifying resistor would be limited to drawing 1.5A. I'm hoping I'm wrong.
Also, try measuring the discharge for a minute or two. I've seen mine settle in around -1000mA if I let it sit awhile. But then, I don't know if that's accurate...

Man, this is such a mess. I got an Aukey 12W / 2.4A Home Travel USB Wall Charger just to see if it there was something wrong with the Anker charger. Nope. The Aukey floats around 1600mA too...
For good measure, I used the supplised USB Type-C to USB A cable - same charge rate. Then I used the charger and C to C - that floats around 2700mA.
Are there any 2.4A chargers that actually charge at that rate?!?!

The USB standard for an in spec Type A to C cable will charge at 1.5A. Only a type C-C will charge at up to 3A. Please Google/search the forum next time before creating an OP. It doesn't matter if you use a Type A to C cable with a 5V. 4A charger it will only give you 1.5A by the USB charging standard. If you use a C-C cable you can get the Max rate

Pilz said:
The USB standard for an in spec Type A to C cable will charge at 1.5A. Only a type C-C will charge at up to 3A. Please Google/search the forum next time before creating an OP. It doesn't matter if you use a Type A to C cable with a 5V. 4A charger it will only give you 1.5A by the USB charging standard. If you use a C-C cable you can get the Max rate
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Hey, good idea.
So for Benson's review of the cable, he says, "...you should be able to charge from a range of .5A to 2.4A using this cable." I guess he should've been the one to "please Google/search the forum."

trama09 said:
Hey, good idea.
So for Benson's review of the cable, he says, "...you should be able to charge from a range of .5A to 2.4A using this cable." I guess he should've been the one to "please Google/search the forum."
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Yes but he goes on to say in other reviews that the USB A-C standard dictates the output of the cable.
As discussed thoroughly in 2 different OP's which you can find below.
Here is a quote from @Elnrik
"No, when I say proprietary protocols, I mean protocols. Not physical wiring. As in "2.4A, which is negotiated over a BC1.2 protocol like CDP or DCP, is appropriate over the Type-A connector." and "By the way, the maximum current of 1.5A is defined by the BC1.2 specification for CDP and DCP, but in practice, a range of other current values are possible using Apple's proprietary protocol or other protocols that bump up the defacto maximum current with a Type A connector on one end up to 2.4A". ~ Benson Leung. The evidence of 2.4A charging on compliant cables is out there, I invite you to google it for yourself. Unless you wish to continue to willfully ignore that. Up to you."
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Please direct yourself to these OP's and read through them so you understand where I am coming from.
1. http://forum.xda-developers.com/nexus-6p/accessories/usb-type-c-cables-reviewed-google-t3240861
2.http://forum.xda-developers.com/nexus-6p/accessories/benson-leung-verified-usb-c-cables-t3245685

I have the Aukey 2.4Amp charger. I use the OnePlus cable.
If you use one of the OnePlus cables or adapters you get the 2.4A.
Yea, I know not certified, etc........

tech_head said:
I have the Aukey 2.4Amp charger. I use the OnePlus cable.
If you use one of the OnePlus cables or adapters you get the 2.4A.
Yea, I know not certified, etc........
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Well you can risk damaging your phone charger or cable that way. There are plenty of certified cables out there to use at 1.5A. If you don't like that then get another Type-C charger and c-c cable.

tech_head said:
I have the Aukey 2.4Amp charger. I use the OnePlus cable.
If you use one of the OnePlus cables or adapters you get the 2.4A.
Yea, I know not certified, etc........
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Click to collapse
Yeah, I had a couple OnePlus cables early on - weeks before I had the 6P. When I saw that they weren't certified and could do damage, I stopped using them right away. Wasted ~$8 unfortunately.
Pilz said:
Well you can risk damaging your phone charger or cable that way. There are plenty of certified cables out there to use at 1.5A. If you don't like that then get another Type-C wall charger and c-c cable.
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Waiting for (more) legit reviews for quality Type-C chargers. Should be soon.

Pilz said:
Well you can risk damaging your phone charger or cable that way. There are plenty of certified cables out there to use at 1.5A. If you don't like that then get another Type-C charger and c-c cable.
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The charger is rated for 2.4A.
Unless you have a crap charger it's got current limiting circuitry. Not likely ro damage it using it for its rated output.
I doubt I'll burn the cable up.
I have a MSEE so I know how power supplies and cables work.
Sent from my Nexus 6P using Tapatalk

tech_head said:
The charger is rated for 2.4A.
Unless you have a crap charger it's got current limiting circuitry. Not likely ro damage it using it for its rated output.
I doubt I'll burn the cable up.
I have a MSEE so I know how power supplies and cables work.
Sent from my Nexus 6P using Tapatalk
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The point I have been making is that the resistor in the Op cable is incorrect. This means the phone will attempt to pull 3A even though the charger/cable aren't rated for it. This would clearly cause an issue. I haven't seen any out of spec cable hold a 3A rating with the correct resistors and actually deliver it from a A-C cable. I'm nor saying your wrong I'm simply stating that this has been brought up by many people who are just as qualified. I've taken some EE course myself being an engineering student an all, but this doesn't mean I know enough to make a 100% correct assessment of the cable/charger situation. If it wasn't an issue we would see reports of chargers burning out so there is an issue somewhere
---------- Post added at 04:09 AM ---------- Previous post was at 04:04 AM ----------
trama09 said:
Yeah, I had a couple OnePlus cables early on - weeks before I had the 6P. When I saw that they weren't certified and could do damage, I stopped using them right away. Wasted ~$8 unfortunately.
Waiting for (more) legit reviews for quality Type-C chargers. Should be soon.
Click to expand...
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The Choetech was reported to deliver the specified 3A about an hour ago in the accessories subforum. You can check there with the member who has it under the 'type c chargers' OP

Charging Question

This may have been asked many times before but I am having a hard time understanding.
I have a bunch of Qualcomm 2.0 car and wall chargers. I just ordered a nexus 6p. I have ordered USB A to C cables to make the chargers work. What kind of charging speeds can I expect from this?
I know it will charge slower than if I hooked it up to the included charger. But will it charge as fast as the quick charge chargers or much slower like when I hook my phone up to a PC and it charges very slowly.

Cue @Elnrik
He the man for this question. Please ignore my below 'theory' in brackets.
(I would say, assuming your QC2.0 have the right resistors, they will only supply a max of 2.0A to the 6P which takes 3A from the supplied Google charger. So, in short, it should charge the same speed as your other devices but will take longer to go to 100% because the 6P battery is larger. The part i'm confused about, due to conflicting reports is whether the A to C cables can supply 2A from your chargers.)

subhani said:
Cue @Elnrik
He the man for this question. Please ignore my below 'theory' in brackets.
(I would say, assuming your QC2.0 have the right resistors, they will only supply a max of 2.0A to the 6P which takes 3A from the supplied Google charger. So, in short, it should charge the same speed as your other devices but will take longer to go to 100% because the 6P battery is larger. The part i'm confused about, due to conflicting reports is whether the A to C cables can supply 2A from your chargers.)
Click to expand...
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So far in my experience the a to c cables charge much slower even with a QC 2.0 charger. I haven't actually measured it but I bought a type c to c charger and cable for my office and can get a full charge from 50% in less than an hour. I use my QC charger at home for over night charging. The charger that came with it had a short cable and was useless for my application so it just sits in a drawer.

I hope this explanation helps you understand better. Let me know if you have questions.
1) Quick Charge 2.0 will attempt to increase voltage at varying current levels to charge compatible Quick Charge devices. The 6P is not Quick Charge compatible, and it requires a constant 5V from it's host.
2) Type A ports do not have a cc pin (configuration channel) to identify itself or to negotiate current with type-c devices. That is why it is the cable which has to do this for the Type A port. It is the job of the Type A to C adaptor/cable to identify (via the correct pullup resistor) to the Type C device that a legacy USB connection is in place. Using the wrong pullup resistor in a cable is akin to deliberately posting a 55mph speed limit sign in a 25mph school zone. When the Type C device sees the resistor in the cable, it knows it is connected to a non-Type C port, and will then use other means to negotiate for power. BC 2.1 (battery charge) protocols are used over the USB 2.0/data wires, and if that fails, it just defaults to legacy current rates.
I hope this post explains things a bit better: http://forum.xda-developers.com/nexus-6p/accessories/usb-type-c-vs-usb-3-0-3-1-vs-usb-2-0-t3221676
So, the short answer is: using compliant cables, your chargers should provide 1.5A to the phone, which is the limit of BC 2.1. If the chargers do not use BC protocols, then 0.9A or 0.5A should be provided. Just make sure to use compliant cables.

Quick charge 2.0 or 2A charger?

Which one will charge faster?

keaheng said:
Which one will charge faster?
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Depends on which class quick charger. It can go up to 3 amps I believe.

Either one will only charge up to 1.5A, considering they both use chargers with a USB Type-A port (the traditional rectangular port). This phone doesn't support Qualcomm's Quick Charge 2.0.
If you want the faster 3A charging mode, you'll need a charger with a USB Type-C connector and a cable with USB Type-C connectors on both ends.
While the marketing says this is "fast-charging" It's actually part of the USB Type-C specifications.
More info here:
http://forum.xda-developers.com/showthread.php?t=3221676

Devhux said:
Either one will only charge up to 1.5A, considering they both use chargers with a USB Type-A port (the traditional rectangular port). This phone doesn't support Qualcomm's Quick Charge 2.0.
If you want the faster 3A charging mode, you'll need a charger with a USB Type-C connector and a cable with USB Type-C connectors on both ends.
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Click to collapse
Thanks for your explanation. I thought pairing a 3A USB-A charger with a USB-A-to-C cable will still work, but in reality it's limited to 1.5A which baffled me a lot. Now I know the reason... Goddamn Google, there's no way I could buy a second original charger set in my country!
Sent from Google Nexus 6P @ CM13
[WARNING: XDA One have not implemented "mark forum as read" - do not use]

AndyYan said:
Thanks for your explanation. I thought pairing a 3A USB-A charger with a USB-A-to-C cable will still work, but in reality it's limited to 1.5A which baffled me a lot. Now I know the reason... Goddamn Google, there's no way I could buy a second original charger set in my country!
Sent from Google Nexus 6P @ CM13
[WARNING: XDA One have not implemented "mark forum as read" - do not use]
Click to expand...
Click to collapse
Yeah its kind of lame. Supposedly its where all android devices are headed, but not very helpful for us 6p owners right now. I got a good car charger USB C cable that charges it as quick as the stock charger through amazon for only $13(prime member). I also use a USB 3.0 A to USB 3.1 C cable on a charger that supports quick charge and it goes up to 1700 amps which is almost two thirds of stock.

QC 2.0 hardware is present on the Nexus 6P
So does anyone, then, know why QuickCharge 2.0 isn't supported, despite that the hardware necessary for supporting it IS available?
https://www.ifixit.com/Teardown/Nexus+6P+Teardown/51660?revisionid=HEAD
If you head down to Step 14, you can see that this device does, in fact, support the SMB1351 that is the power management piece necessary for QC 2.0.
Do we just assume that it's disabled in the firmware of the device?
Devhux said:
Either one will only charge up to 1.5A, considering they both use chargers with a USB Type-A port (the traditional rectangular port). This phone doesn't support Qualcomm's Quick Charge 2.0.
If you want the faster 3A charging mode, you'll need a charger with a USB Type-C connector and a cable with USB Type-C connectors on both ends.
While the marketing says this is "fast-charging" It's actually part of the USB Type-C specifications.
More info here:
http://forum.xda-developers.com/showthread.php?t=3221676
Click to expand...
Click to collapse
AndyYan said:
Thanks for your explanation. I thought pairing a 3A USB-A charger with a USB-A-to-C cable will still work, but in reality it's limited to 1.5A which baffled me a lot. Now I know the reason... Goddamn Google, there's no way I could buy a second original charger set in my country!
Sent from Google Nexus 6P @ CM13
[WARNING: XDA One have not implemented "mark forum as read" - do not use]
Click to expand...
Click to collapse
XxMORPHEOUSxX said:
Yeah its kind of lame. Supposedly its where all android devices are headed, but not very helpful for us 6p owners right now. I got a good car charger USB C cable that charges it as quick as the stock charger through amazon for only $13(prime member). I also use a USB 3.0 A to USB 3.1 C cable on a charger that supports quick charge and it goes up to 1700 amps which is almost two thirds of stock.
Click to expand...
Click to collapse

Can I use regular 2A charger with N6p?

There are no many adapters on the market and I couldn't find original huawei adapter. Can I use a regular adapter (samsung 2A for example) with my Nexus?
Sent from my Nexus 6P using xda premium

Yes, but you must use a certified cable. Check Benson Leung's reviews on Amazon to find a good one or use the cable provided in the box.
However you can buy original charger from Google Store or a valid alternative from Amazon like this:
http://www.amazon.com/Charger-Type-..._1_1?s=wireless&ie=UTF8&qid=1461623244&sr=1-1
If I understand correctly some articles USB A chargers doesn't support type-c power profile, so the phone will charge at a constant rate without lowering amperage to be gentle with the battery. Furthermore the quick charge is a very useful feature, so I suggest you to buy a compatible charger.

Absolutely. Just be aware that charging of the Nexus 6P/5X is limited to 1.5A over a proper USB Type-A to USB Type-C cable. With a USB Type-C to USB Type-C cable and a Type-C charger, it charges at up to 3A (as it does with the official charger).
So if you're worried about speed of charging, you may want to get yourself a new USB Type-C charger, as a Type-A charger will take about twice as long! (a 3A USB Type-C charger takes about 90 minutes) Personally, I just have a USB Type-A charger by my bed, since it will definitely finish charging while I sleep. Then I keep the original charger in my work bag, in case I need to quickly recharge during the day!
frezd91 said:
If I understand correctly some articles USB A chargers doesn't support type-c power profile, so the phone will charge at a constant rate without lowering amperage to be gentle with the battery. Furthermore the quick charge is a very useful feature, so I suggest you to buy a compatible charger.
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I don't know if that's the case, but if it is, I'm not sure it matters. With the USB Type-C charger it's drawing 3A and then lowers as the battery gets full, but I don't know how low it gets. Whereas a USB Type-A charger will be drawing 1.5A maximum, so it may not even need to lower.

Any good USB type A charger that you can recommend?
I Have a good opinion about Samsung adaptive charger that my wife uses with her note edge.
Sent from my Nexus 6P using xda premium

I am partial to Anker brand chargers. I would suggest the PowerPort 2 (as I own a couple), it is capable of charging two devices at up to 2.4A each (while the Nexus 6P can only draw 1.5A, iPads can draw the full 2.4A because of their proprietary tech). But as you can see on the Anker website, they have a ton of different options!

Quick Charge specs? Outlet?

So what do we call the "Quick Charge" that was used for the Nexus 6P? I know it wasn't the same as the quick charge in other phones at the time and it was kind of proprietary when it came out.
The reason I ask is because I need a new charger, but I was curious if there was a wall outlet (with usb ports) that would do the same thing.....Most of the wall outlets say 2.1amp 3.1amps or 4amps, which I assume is divided between the 2 ports if both are in operation. I also have a Nexus 9 so I'd like to be able to charge that.
Any tips or info on what specs I need to look for?

GatorsUF said:
So what do we call the "Quick Charge" that was used for the Nexus 6P? I know it wasn't the same as the quick charge in other phones at the time and it was kind of proprietary when it came out.
The reason I ask is because I need a new charger, but I was curious if there was a wall outlet (with usb ports) that would do the same thing.....Most of the wall outlets say 2.1amp 3.1amps or 4amps, which I assume is divided between the 2 ports if both are in operation. I also have a Nexus 9 so I'd like to be able to charge that.
Any tips or info on what specs I need to look for?
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You can look over in the Accessories sub-forum where there is plenty of charger and cable discussion, but basically the 6P does not support the quick charge standard and ANY charger or cable that uses a USB-A port will NOT rapid charge your phone. You need a charger that either has a USB-C female outlet or integrated (non-removable) USB-C cable that supports the USB-C 5V-3A standard. That is the only way the phone will rapid charge. The N9 does not support the quick charge or turbo charge standards either. Mine came with 1.5A charger. You just need a good 5V charger that puts out at least 1.5A and the tablet will safely limit the input amperage. Since you have two devices to charge, you may consider a charger that has both a USB-C and USB-A port.