Develop Bugs

Wall charger vs USB charger

Hi,
I have noticed my phone charges much quicker via the USB on my PC. It takes about 2 hours to charge fully, while the wall charger takes 3-5 hours to charge like 40% or something.
The specifications for the wall charger are:
INPUT: 100-240V ~ 50/60Hz 0.2A
OUTPUT: 5.1V=== 850mA
I do'nt know what the specs for my USB port are? Can I check it in the BIOS? I have googled and found it's something around 5V 500mA, so technically my phone would charge slower...
This is how the wall charger looks like (you can unplug the USB-cable and use it on the PC since it's not a standard USB-mini connection).
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Thanks for any feedback.
EDIT:
(moved a post to this thread)
Cocide said:
Well the 500mA is the minimum spec for USB, basically they say its at least 500mA so that manufactures know how much power to expect and can design devices to run at that amount of power or less. That being said, USB can be anything above 499mA, I have seen a laptop put out 2000mA before even. So yes it is quite possible that your computer could put out over the 850mA of your charger. It probably won't say what its capable of delivering in your BIOS, if you really want to know you could try to find the specs for your computer/mobo/usb chipset. All that being said, you could always get a different USB wall adapter if you wanted to charge faster w/o a computer, just because it came with the one you currently use doesn't mean you have to use it (it is just a powered USB port after all).
Click to expand...
Click to collapse

Seems like your wall charger is defective, normally It takes about 1.5-2 hours for working wall charger to make the job done.
Standard PC USB port output is 5v==500mA, so it's strange that you can fully charge 1140 mAh battery just in 2 hours.

G1-Amateur said:
Hi,
I have noticed my phone charges much quicker via the USB on my PC. It takes about 2 hours to charge fully, while the wall charger takes 3-5 hours to charge like 40% or something.
The specifications for the wall charger are:
INPUT: 100-240V ~ 50/60Hz 0.2A
OUTPUT: 5.1V=== 850mA
I do'nt know what the specs for my USB port are? Can I check it in the BIOS? I have googled and found it's something around 5V 500mA, so technically my phone would charge slower...
This is how the wall charger looks like (you can unplug the USB-cable and use it on the PC since it's not a standard USB-mini connection).
Thanks for any feedback.
Click to expand...
Click to collapse
USB spec calls for 5V, 500mA max output (it's often less - reason is that it's 500mA per hub and in must configurations multiple ports share a single hub internally so multiple devices all plugged in at the same time will share the 500mA).
Your charger should charge in about half the time of your PC USB. Your wall charger must be defective.

richb500 said:
USB spec calls for 5V, 500mA max output (it's often less - reason is that it's 500mA per hub and in must configurations multiple ports share a single hub internally so multiple devices all plugged in at the same time will share the 500mA).
Click to expand...
Click to collapse
Actually you got that backwards, its 500mA minimum. Check the docs if you do not believe me. And before you quote it, yes I do know that wiki says "A maximum of 5 unit loads (500 mA) can be drawn from a port in USB 2.0" that is because they are talking about the maximum that you are guarantied to receive as a USB device. You really need to read both sides of the documentation for this one, the USB protocol documentation for the computer side says it will provide 500mA minimum, and for the device side they say draw 500mA maximum. That way manufactures know that they can draw 500mA maximum to fully power the device because they are guaranteeing that they will be given at least that amount or more. Often times ports will actually put out more because manufactures are aware that devices charge over USB, and of course you can have ports that do deliver less because of some extenuating circumstance.
Granted that is all per port (and internal USB bus is not the same as a USB hub, they often provide full power per port), if you have a hub you are using it can be less, but you can not assume its a hub.
Long story short, if it has the USB sticker on it it puts out at least 500mA all the way up to whatever the manufactures prerogative was.

Wall charger charges much faster in my case. Just a little more than 1 hour.
The charging time is depend on the charging current. Wall charger is around 850-1000ma, usb is below 500ma (for some bad PC, it could be as low as 200ma). The capacity of the flipout battery could be 1130mah. 1130/1000 = 1.13 hour full charge time.

+1.5A Dual Android wall charger?

I recently picked up an Anker dual car charger (link). It has two ports labeled Apple, the other Android. Both ports can supply 2.4A, for a total of 4.8A.
When I charge my phone from the Android side I get very close to 1A, but when I use the Apple side that goes down to around 500mA. To note, I used the same cable and only one port was used while testing. I used Battery Monitor Widget to track the charge rates.
Either side is strong enough to charge our phones, but it would be great if they both charges at full charge rates. So now I am looking for a wall charger and ideally I would like a dual port charger that can charge two Android devices at over 1.5A. I know we can't use 1.5A but it will future proof the chargers for a while, or will work with tablets.

SykesAT said:
I recently picked up an Anker dual car charger (link). It has two ports labeled Apple, the other Android. Both ports can supply 2.4A, for a total of 4.8A.
When I charge my phone from the Android side I get very close to 1A, but when I use the Apple side that goes down to around 500mA. To note, I used the same cable and only one port was used while testing. I used Battery Monitor Widget to track the charge rates.
Either side is strong enough to charge our phones, but it would be great if they both charges at full charge rates. So now I am looking for a wall charger and ideally I would like a dual port charger that can charge two Android devices at over 1.5A. I know we can't use 1.5A but it will future proof the chargers for a while, or will work with tablets.
Click to expand...
Click to collapse
Maybe look at getting a powered USB hub? I know the 2 I have at home can supply more than the 500mA USB2 spec as they've back powered my raspberry pi with a hdd attached before.

from my limited research, apple and android phones use different methods for signaling AC charging.
Android phones like to have the data pins in the USB cable shorted to each other to signal the phone for AC fast charging.
Not sure what Apple does, but it's not the same. That's why there are two different ports on the charger. Android ports have the data pins shorted together.
On a side note, you can also buy "charging only" cables on amazon that do the data pin shorting inside the cable. this may let you use your android phone with the apple labeled USB ports.

ez12a said:
from my limited research, apple and android phones use different methods for signaling AC charging.
Click to expand...
Click to collapse
This is correct. Apple devices want to see some combination of 2V and 2.8V on the data +/- lines to signal wall adapter charging. They do it this way because it allows the charger to tell the device what amperage it's capable of delivering (500mA, 1A or 2A) which is pretty cool.

It's been my impression that even using an charging only cable/adapter an Apple charging port will only give you 500 mA.
For what it's worth I recently emailed Anker about this and they said as much. I don't have an appropriate cable or charger to test it on. But Anker also told me they will be releasing new chargers in December that feature their smart charging port which detects what type of device you've attached (Apple, Samsung or generic Android) and then behaves accordingly. I just ordered one of their external battery packs (Astro3) which has one of these ports for 2.1A plus 2 x 1.5A Android ports. A similar AC charger would be nice if you can wait.

tmagritte said:
It's been my impression that even using an charging only cable/adapter an Apple charging port will only give you 500 mA.
For what it's worth I recently emailed Anker about this and they said as much. I don't have an appropriate cable or charger to test it on. But Anker also told me they will be releasing new chargers in December that feature their smart charging port which detects what type of device you've attached (Apple, Samsung or generic Android) and then behaves accordingly. I just ordered one of their external battery packs (Astro3) which has one of these ports for 2.1A plus 2 x 1.5A Android ports. A similar AC charger would be nice if you can wait.
Click to expand...
Click to collapse
That is great to know. I can live with what I have until they release that charger. thanks.

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http://pages.ebay.com/link/?nav=item.view&id=111292550874
Pretty good deal, imo. Just arriwed, will share my experiences.
Nexus5 X Tapatalk Pro

AUKEY 6-Port Desktop Quick Charge 3.0 Charging Station - Review & Unboxing

AUKEY 6-Port Desktop Charging Station with Quick Charge 3.0
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Unboxing
It comes with an eco-friendly packaging and basic accessories: 1x Type-C to Type-C Cable, 1x Power Plug (mine is an European Version), 1x User Manual, 1x Warranty Card and the Charger (of course).
As regards the Charging Station, it is made of Plastic, extremely solid and without scratchy parts. Probably the most solid charger I have ever tried.
On the front, there is an useful Power LED (Green) that could be pretty useful if you need to find the charger in a dark room or just to know if it has been plugged properly to the power socket. Its color doesn’t seem to change, so it is just a standard Power LED.
Being a Charging Station, it couldn’t have had few USB Ports. There are 6 USB ports available, 2 of them Type-C with Quick Charge 3.0 support. Unfortunately, there are no full-size USB ports that support QC 3.0 (so, you’ll need an adapter), they support Standard 5V output, just with another technology called “AIO” from AUKEY that works on the voltage depending on the attached device. Follow my next paragraph to know more.
As regards the size, it isn’t bulky neither heavy. Photos tend to make it bigger than how it is for real, so it is better if you follow my measurements.
Efficiency
All tests have been done using AUKEY’s Cables, in order to get maximum efficiency and to avoid any possible issue.
I have tested the “AIO” USB Ports using my USB Capacitor (1A/2A), and the voltage is Stable enough under high-load.
Unfortunately without an adapter I won’t be able to show you any test about Quick Charge 3.0 USB Ports, as soon as I get it i’ll update the review. Anyway, I have tested both USB Type-C ports using my Power Bank, and I haven’t noticed any issue with Standard Type-C USB Output, rated at 5V/3A.
Under high-load (6A more or less), it reached just 41°C.
Conclusions
Being the most particular Charging Station I have ever tried, I can say that it impressed me. Solid Chassis, no Glossy sides, and an huge amount of USB ports makes it almost perfect. As I said for the Type-C Car Charger, it’s a pity that AUKEY doesn’t choose to include a Type-C adapter in order to take advantage of that 2 QC 3.0 USB ports also with other devices that support it but without Type-C support.
So...do I recommend it? Yes, but only if you want to spend some extra money for the Type-C adapter (in case of devices without Type-C), otherwise just go for the standard version without Type-C ports.
Pros:
- Qualcomm Quick Charge 3.0 Support
- 2 Type-C Quick Charge USB Ports
- Well-Designed Chassis
- Power LED
Cons:
- Quick Charge available only on the Type C ports
- No Type-C adapter included
Rating: 8.6
Packaging and Accessories: 7.5
Design and Materials: 9.5
Performance and Efficiency: 9
Price: 8.5 (based on Amazon price)
Official Product page: http://www.aukey.com/product/PA-Y6
You can find full-res images (I know, Quality isn't excellent) here: http://imgur.com/a/UI9Gc​

Sorry to dredge up an old review, but I just got this charger and noticed you're using an amp-meter between the charger and device. As do I (just to keep an eye on things).
I've wondered... Would a cheap meter interfere with the Quick Charge signals being exchanged been the charger and device?

CAL7 said:
Sorry to dredge up an old review, but I just got this charger and noticed you're using an amp-meter between the charger and device. As do I (just to keep an eye on things).
I've wondered... Would a cheap meter interfere with the Quick Charge signals being exchanged been the charger and device?
Click to expand...
Click to collapse
It usually won't (cheap or expansive that is), unless you kill the data lines of the USB connection.
Just be sure that the tester itself supports voltages higher than 5V. (Tronsmart and Drok USB Testers are great if you want to spend some extra bucks)
I managed to fry an ultra-cheap USB tester just because the current was too high, like more than 2A on 5V, so be careful about this too.

Anyone know diff between Aukey PA-Y6 60W Type-C 6-Port Charging Station with Quick Charge 3.0 and AUKEY PA-T11 6 Port USB Charger with Dual Quick Charge 3.0 Ports (Malaysia 3Pin) PA-T11. Is it 1 with input port usb-C and another with micro usb? Thats it? As i see both price the same, im using LG G6 thus i mainly using usb-C.
Both RM169( around USD 43)
Thanks in advance.

andrew916 said:
Anyone know diff between Aukey PA-Y6 60W Type-C 6-Port Charging Station with Quick Charge 3.0 and AUKEY PA-T11 6 Port USB Charger with Dual Quick Charge 3.0 Ports (Malaysia 3Pin) PA-T11. Is it 1 with input port usb-C and another with micro usb? Thats it? As i see both price the same, im using LG G6 thus i mainly using usb-C.
Both RM169( around USD 43)
Thanks in advance.
Click to expand...
Click to collapse
In the PA-T11 all USB ports are standard female ports, even the QuickCharge 3.0 ones.
So if you already have USB C to USB C cables, you may go for PA-Y6 and get a USB C to microUSB adapter so you can use with other devices.
In my case, I have QuickCharge 3.0 compliant devices that uses microUSB instead of USB-C, so I've got the PA-T11 and mostly use both QC 3.0 simultaneously with microUSB cables. Eventually I use the QC 3.0 with my Nintendo Switch using USB to USB-C cables.
I guess that internally the PA-T11 and PA-Y6 uses the same or almost same circuits and pieces, changing only the connectors of QC 3.0 ports.

Quick Charge 3.0 cable

Hi, I'm pretty new to this Quick Charge 3.0 thing,
I was wondering which usb type-c cable you guys recommend? Will any type-C cable work? Does it need to be certified for Quick Charge 3.0 to work with QC3.0?
Thanks

XblackdemonX said:
Hi, I'm pretty new to this Quick Charge 3.0 thing,
I was wondering which usb type-c cable you guys recommend? Will any type-C cable work? Does it need to be certified for Quick Charge 3.0 to work with QC3.0?
Thanks
Click to expand...
Click to collapse
It's actually the power brick that's the most important feature for QC 3.0.

This is the one I'll be getting from Amazon once I get my phone. Definitely need two cables I believe; one for charging and one for data.
Orzly® - New Certified USB 3.0 USB-C to USB-A Male Data & Charging Cable (3A/5V) - For Use With Nexus 5X, Nexus 6P, Lumia 950, Lumia 950 XL and Other Type-C Supported Devices (1M, BLACK)
Click to expand...
Click to collapse
Here's a link to the product page: https://www.amazon.com/dp/B018F8BA0C/ref=wl_it_dp_o_pC_nS_ttl?_encoding=UTF8&colid=1OCDOJYDU3RS5&coliid=I2T6808AJ4K5E5&psc=1
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That Orzly is pretty expensive for a 1M cable.I
just received an i-Orange 2M cable from Amazon for 10.49 and the build quality is top notch. It also charges at the same 2950mah as the stock cable, according to Ampere.
https://www.amazon.com/gp/aw/d/B010VFFSL4/ref=ya_aw_od_pi?ie=UTF8&psc=1

I don't need a longer cable and a 1 meter cable is sufficient for me. I am just using it for data transfer but is is also capable of the charging power up to 60W (3A)

I got these, you get three at a decent price.
https://www.amazon.com/AUKEY-USB-C-...F8&qid=1471240582&sr=8-8&keywords=aukey+usb+c

Nibiru2012 said:
I don't need a longer cable and a 1 meter cable is sufficient for me. I am just using it for data transfer but is is also capable of the charging power up to 60W (3A)
Click to expand...
Click to collapse
How are you getting 20v from a USB charger?
Sent from my ZTE A2017U using XDA-Developers mobile app

Cables look good. I'm also trying to find decent quality and price wall adapters (the thing that plugs your usb cable in your wall outlet).
I bought my phone while living in China and they gave a Chinese adapter (of course)...

max1001 said:
How are you getting 20v from a USB charger?
Sent from my ZTE A2017U using XDA-Developers mobile app
Click to expand...
Click to collapse
With a 20v quick charge brick.

max1001 said:
How are you getting 20v from a USB charger?
Click to expand...
Click to collapse
If you would like to read about the technology. Q5 answers quickly but there is much more reading available.
https://www.qualcomm.com/products/snapdragon/quick-charge/faq
QC3.0 varies voltage from like 3.6v (going off memory) up to 20v based on what device needs.

biglilsteve said:
That Orzly is pretty expensive for a 1M cable.I
just received an i-Orange 2M cable from Amazon for 10.49 and the build quality is top notch. It also charges at the same 2950mah as the stock cable, according to Ampere.
https://www.amazon.com/gp/aw/d/B010VFFSL4/ref=ya_aw_od_pi?ie=UTF8&psc=1
Click to expand...
Click to collapse
Thinking of Ordering it. Thanks
But it is apparently only usb2 as far as transferring from computer. Don't our phones support usb3 transfers?
I have an Aukey I bought that does nothing when connected to ac block.

Barsky said:
Thinking of Ordering it. Thanks
But it is apparently only usb2 as far as transferring from computer. Don't our phones support usb3 transfers?
I have an Aukey I bought that does nothing when connected to ac block.
Click to expand...
Click to collapse
yes you want usb 3.0 cables atleast for the ones you are using for data transfer. You can buy some cheaper 2.0 ones you will just use for charging.

I just bought these AUKEY USB-C to USB 3.0 Cable with Durable Nylon [5-Pack 3.3ft*3+6.6ft*1+1ft*1]. It seems like a good price for 5 cables.

XblackdemonX said:
I just bought these AUKEY USB-C to USB 3.0 Cable with Durable Nylon [5-Pack 3.3ft*3+6.6ft*1+1ft*1]. It seems like a good price for 5 cables.
Click to expand...
Click to collapse
I think these are the same as the single 6' cable I bought. It workd for data transfer but wasn't even seen at all when plugged in to charge. Please report your experience. Thanks

max1001 said:
How are you getting 20v from a USB charger?
Sent from my ZTE A2017U using XDA-Developers mobile app
Click to expand...
Click to collapse
The axon 7 included charger only goes upto 12v. (Class A Qualcomm charger)
There are chargers out there that also goto 20v. (Class B QualComm charger)
I am not sure that the axon 7 or any 820 chipset can take 20v. 12V is good enough for me, don't need the extra heat in my phone even for the short period of time.
Class B chargers are designed for Laptops and other devices larger than a Smart phone.

HonestOtter said:
The axon 7 included charger only goes upto 12v. (Class A Qualcomm charger)
There are chargers out there that also goto 20v. (Class B QualComm charger)
I am not sure that the axon 7 or any 820 chipset can take 20v. 12V is good enough for me, don't need the extra heat in my phone even for the short period of time.
Class B chargers are designed for Laptops and other devices larger than a Smart phone.
Click to expand...
Click to collapse
As the voltage goes up with QC, the amp goes down.
9V/2A and 12V/1.67A
You are not going to get 20V/3A to reach 60 watts. Hell, your phone would melt with 60 watts.

I'm looking for a cable that is the same flexibility as the stock ZTE cable, preferably usb 3.1 but definitely QC 3.0 compatiable.

The USB cable had a lot to do with charging your device, quick charge or not. Non-standard USB-C cables can kill your device. I'm sure many of us have heard about Benson Leung and his reviews of USB-C cables. If not, he's a Google engineer that, for some reason, took it upon himself to review USB-C cables and see if they are "safe". Dude killed his Pixel C with a bad cable:
http://www.androidpolice.com/2016/0...ous-on-paper-it-allegedly-fried-his-hardware/
I suggest taking a look at the compiled list of cables and adapters he has reviewed or search for his profile on Amazon. I picked up a few USB 3.0 A-to-C cables by VCE that he reviewed and they work well. They are decently priced too. Suggest getting the 3 pack with a 3.3, 5, and 6.6 ft cable for ~$15.

I ordered this the other day, it's supposed to be approved by the Google Eng. (Benson Leung) who's been going around checking USB C cables.
https://www.amazon.com/gp/product/B01A07CE8S/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1
Will receive it later today.
Now i'm looking for a nice type-C to type-C cable for data transfer since i have a type-C port on my XPS 15. I looked at some Thunderbolt 3 cables but they're going for around $25+ which seems too high.

gumbyx84 said:
The USB cable had a lot to do with charging your device, quick charge or not. Non-standard USB-C cables can kill your device.
Click to expand...
Click to collapse
Mostly it is crappy chargers that kill your device. A non-spec cable is not too bad if the charger can deliver 3amps reliably (using it as a data cable might not be too great of an idea though) or will gracefully deliver less than that.
And either way, QC3.0 is in clear violation of the USB-c spec so go figure.

Will this charger fast-charge Pixel 2 XL ?

Will this charger fast-charge Pixel 2 XL if I use it with a type-c to type-c cable ?
http://www.mxonline.com.pk/branded-...-usb-quick-charge-for-iphone-8-x-ipad-macbook
UPDATE: What about this one? https://torumart.pk/product/xiaomi-...-to-c-cable-compatible-latest-apple-macbooks/

I doubt a 1A would

The amperage of the power source must equal or exceed that of the device. Our device is 9V/2A or 5V/3A. This charger is only 2A at 5V. Attempting to use it will cause the components to overheat. In quick fashion you'll burn out the charger at best, or cause a house fire at worst.

pbman1953 said:
I doubt a 1A would
Click to expand...
Click to collapse
Strephon Alkhalikoi said:
The amperage of the power source must equal or exceed that of the device. Our device is 9V/2A or 5V/3A. This charger is only 2A at 5V. Attempting to use it will cause the components to overheat. In quick fashion you'll burn out the charger at best, or cause a house fire at worst.
Click to expand...
Click to collapse
What about the one below:
https://torumart.pk/product/xiaomi-...-to-c-cable-compatible-latest-apple-macbooks/
Also are Qualcomm 3.0 chargers safe to use?

That one provides 3 amps at both 5 and 9 volts. The P2XL only requires 2A at 9V, therefore that charger will safely quick charge the P2XL.
The brand of charger is irrelevant here. The only two things that matter on a charger are the voltage and the amperage. I've already covered the requirements for amperage in post 3 above. The requirements for the voltage are that the voltage of the power source must equal the voltage of the device itself. Unlike the amperage, if the voltage does not match your device will end up permanently damaged.

Strephon Alkhalikoi said:
That one provides 3 amps at both 5 and 9 volts. The P2XL only requires 2A at 9V, therefore that charger will safely quick charge the P2XL..
Click to expand...
Click to collapse
You are referring to this? >> https://torumart.pk/product/xiaomi-...-to-c-cable-compatible-latest-apple-macbooks/
Im currently using the one below and it charges slow as hell...is it even safe to use?
http://www.plugintec.com/surge-qc/
Also this one seems to fulfill the requirements you stated but its usb-a to usb-c instead of usb-c to usb-c. does that matter?
https://www.ishopping.pk/huawei-quick-charger-2a-with-micro-usb-cable.html
Also the one below does 5.0V/2.5A 9V/2A 12V/1.5A....will that work?
https://www.xiaomistore.pk/specs/gid/389

ranasrule said:
You are referring to this? >> https://torumart.pk/product/xiaomi-...-to-c-cable-compatible-latest-apple-macbooks/
Click to expand...
Click to collapse
Yep.
The plugintec device I wouldn't trust, though it apparently is capable of matching the voltage as well as match the amperage. The fact it has variable voltages is not something I've encountered. I would take a multimeter to the USB port on the charger and see what the voltage actually is, as it may not be correct for the P2XL.
The Huawei charger only outputs 2A at 5V, meaning you'd burn it up. The Xiaomi charger only outputs 2.5A at 5V, meaning you would burn it up, although that one would take longer to wear out. What I am not understanding here is why you do not simply get the actual charger. On Amazon they have it for about 20 USD (2,477.92 PKR) and I'm fairly certain they ship worldwide. The only thing you may need would be a plug adapter, if Pakistan doesn't use US standard blade plugs.

Strephon Alkhalikoi said:
What I am not understanding here is why you do not simply get the actual charger. On Amazon they have it for about 20 USD (2,477.92 PKR) and I'm fairly certain they ship worldwide. The only thing you may need would be a plug adapter, if Pakistan doesn't use US standard blade plugs.
Click to expand...
Click to collapse
I would love to get an original one from amazon but the problem is the cost of shipping. If I could get it for 20 USD with free shipping I would go for it in a heartbeat.

I would find a way to do it anyway. It's the only foolproof means of ensuring nothing goes wrong with the device you spent a lot of money on.

using this now to charge my phone. no problem with fast charging.
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https://www.aliexpress.com/store/pr...l?spm=2114.12010612.8148356.23.60546014WzMqFb

I don't think it's only about the volts and amps. QC 3 might have some same profiles as USB PD but USB PD devices can't negotiate the profiles with QC protocol charger's. Someone correct me if I'm wrong.
USB PD is only available on USB-C chargers that support the USB PD protocol.
For the pixel 2xl you need a USB-C PD charger that can do 5V/3A and 9V/2A for rapid charge.

reactor_sa said:
I don't think it's only about the volts and amps.
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I think you're right about that. I'm only concentrating on volts and amps for safety reasons.

Hello guys, may I know what is max wattage your pixel 2 xls are giving? I believe it's locked at 18W. But due some reason my phone charges blazing fast n shows 27W. I use custom ROM n aukey charger.

psnijjar said:
Hello guys, may I know what is max wattage your pixel 2 xls are giving? I believe it's locked at 18W. But due some reason my phone charges blazing fast n shows 27W. I use custom ROM n aukey charger.
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It was originally only 10.5W when the first first came out:
https://www.xda-developers.com/google-pixel-2-xl-charging-speed-functionally-capped/
But I think that's changed with updates but I never read any official confirmation of it.
Sent from my Pixel 2 XL using Tapatalk