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Has anyone found a current monitoring app that works on our phone? I tried both Ampere and CurrentWidget with no luck. I'm trying to better understand how my different chargers are working.
Ampere works. You have to use it like disconnect your charger and open the app. When you get inside the app connect your charger and wait. It will calculate
I ended up using an actual current measuring USB device to see how much the phone is actually pulling from various chargers. Some interesting results (long story short, don't just look at the rated numbers). All figures below taken when phone battery at about 65%, so empty enough that phone should be pulling as much as it could, and is the maximum "typical" reading during about 2 minutes of test:
Stock Sony 850mA Charger (comes with phone) - 890mA
Anker 7-port Charger (7 ports rated at 2.1A per port) - 820mA
Samsung 2A Charger (came with a Note 8 tablet) - 1090mA
Bolt Charger/Battery Backup (one port rated at 1A) - 840mA
Bolt2 Charger/Battery Backup (two ports rated at 2.3A total) - 460mA
Wopow Battery Backup pack (2 ports - 1A port) - 770mA
Wopow Battery Backup pack (2 ports - 2.4A port) - 450mA
Kensington Travel Adapter with Built-in USB Ports (two ports rated at 2.1A total) - 460mA
It seems that any charger with two ports gives a low output, even if they are rated for 2+A total. A "good" charger will allow the phone to charge at about 800mA, whether it's rated at 850mA or 2A. The exceptional one is the Samsung charger, I have not been able to get over 1A charge rate on any other charger.
Note: Used the same USB cable for all tests. This is all with a cheap USB current monitor off eBay. It could totally be inaccurate. Take these results any way you wish.
So USB-C is finally being incorporated into many devices these days so I would think that the days of bringing 4 different chargers on the road would be becoming a thing of the past. Unfortunately a quick test shows this might not be the case if you want to maintain the rate of charge that the OEM charger provides. My understanding of USB-C was that whenever a device ( In this case my Nexus 6P ) is plugged into a capable USB-C charger, it would charge at the highest available rate that it could take, given the capacity of the charger and capability of the device. What I found is that when my Nexus 6P was around 60% charged, I tried switching over to my new 2016 Macbook Pro 87 Watt USB-C wall charger, the charge rate slowed way down and never recovered. While it was plugged into the OEM charger I was seeing 1800 mA; then when I plugged it into the Mac charger, the rate never got higher than about 600 mA after several minutes. I then plugged back into the OEM Nexus charger and the rate again increased back to > 1800 mA. Anyone else have a different experience with chargers other than the stock one and the rates they can provide to the Nexus?
Most Apple chargers have chips for interacting with their products. Would make sense they limit unknown.
http://forum.xda-developers.com/nex...t/xthermal-mod-fast-charging-cpu-gpu-t3433784
I did consider the possibility that the charger isn't built to the official USB-C power delivery spec, but I wouldn't think Apple would be the company to build a non-compliant part.
Most ac/dc usb charger (1.5A-2.5A @5V) give me 1500mA on lockscreen (Custom ROMs).
Only original charger came with 6P will show 1800mA.
(Not sure about real charging current.)
Do we know for sure why it is that dash charging only works work the dash cable. Is it a DRM issue or a design element that needs to be licensed.
I'm not too stressed out because I plan to use a standard usb c cable for overnight charging but I am curious what is actually going on inside this charger.
I am quite familiar with OP official response concerning the matter, but given their track record of non answers, I'm assuming this situation is no different.
In other words I am curious what stops a company from releasing a cable that would in fact work. Possibly with the addition of some end user kernel changes. I understand this would be slightly impractical for a large company like Aukey or Anker to release a cable for one phone (that people could not use straight out of the box) however, my curiosity is still there
https://www.androidcentral.com/dash-charge has a good article on this.
---------- Post added at 12:53 PM ---------- Previous post was at 12:47 PM ----------
Also, supposedly it's the same tech as http://www.oppo.com/en/technology/vooc - and anything "VOOC" branded will provide the same "dash charge" speeds.
Dougshell said:
Do we know for sure why it is that dash charging only works work the dash cable. Is it a DRM issue or a design element that needs to be licensed.
I'm not too stressed out because I plan to use a standard usb c cable for overnight charging but I am curious what is actually going on inside this charger.
I am quite familiar with OP official response concerning the matter, but given their track record of non answers, I'm assuming this situation is no different.
In other words I am curious what stops a company from releasing a cable that would in fact work. Possibly with the addition of some end user kernel changes. I understand this would be slightly impractical for a large company like Aukey or Anker to release a cable for one phone (that people could not use straight out of the box) however, my curiosity is still there
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Simple Answer to this is the proprietary high amp usb type c cable which is supplied with the stock 5v 4amp power brick work well hand in hand, it is the way Oneplus has made this..one cannot work without the other so it is packaged deal..take it or leave..unless you are willing to compromise DASH Charge you can use any other type C cable and power brick adaptor
On a standard type-c (USB 3.1) cable connected to my PC, the phone slow charges. My other devices fast charge on this cable.
The other devices slow charge when connected to Dash cable and charger.
It leads me to think some very non-standards conforming USB tech is going on in the Dash gear, enough to make Benson Leung sick to his stomach. This isn't new to OnePlus, see https://plus.google.com/+BensonLeung/posts/JmcU4rA1csh
My advice would be to never use Dash gear with other devices.
Elnrik said:
It leads me to think some very non-standards conforming USB tech is going on in the Dash gear, enough to make Benson Leung sick to his stomach. This isn't new to OnePlus, see https://plus.google.com/+BensonLeung/posts/JmcU4rA1csh
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AFAIK this non-compliance thing has been there only in the first shipped cables and was fixed later on. So today's devices (this is already 2 years ago) should be compatible to USB standards and therefore other devices should load their battery at normal speed (not dash-speed) with the dash cables and dash plugs.
tobby88 said:
AFAIK this non-compliance thing has been there only in the first shipped cables and was fixed later on. So today's devices (this is already 2 years ago) should be compatible to USB standards and therefore other devices should load their battery at normal speed (not dash-speed) with the dash cables and dash plugs.
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Should, but I don't think it is. Q: why would the OP5 not fast charge over a normal type-c connection if it were standards compliant? Answer: it doesn't comply with standards.
Elnrik said:
Should, but I don't think it is. Q: why would the OP5 not fast charge over a normal type-c connection if it were standards compliant? Answer: it doesn't comply with standards.
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Amswer: OP5 doenst support any other quick charge methods (aka. QC 2.0/3.0, Adaptive Charging, Super Charging etc). It only supports normal charge or dash charge (& Vooc as dash is based on Vooc).
Also you should remember that different phones shows differently charging methods. Example Oneplus can maybe show normal 2A slow and Samsung as normal charge. Nexus 6P will show regular 3A charging as fast charging, Oneplus shows it regular charge.
For me if i use other C-cables (non-Dash charge one) it shows just "charging".
Regarding to Benson case... Original OP2 cable was non-standard. It didnt contain regular 56ohm thing. Oneplus fixed it later and dash charge cable is using standard things and also only for 3/3T/5 dash charge properties. For other phone you can use it without problems like use it to charge QC3.0 phones etc.
Sent from my OnePlus5 using XDA Labs
zige said:
Amswer: OP5 doenst support any other quick charge methods (aka. QC 2.0/3.0, Adaptive Charging, Super Charging etc). It only supports normal charge or dash charge (& Vooc as dash is based on Vooc).
Also you should remember that different phones shows differently charging methods. Example Oneplus can maybe show normal 2A slow and Samsung as normal charge. Nexus 6P will show regular 3A charging as fast charging, Oneplus shows it regular charge.
For me if i use other C-cables (non-Dash charge one) it shows just "charging".
Regarding to Benson case... Original OP2 cable was non-standard. It didnt contain regular 56ohm thing. Oneplus fixed it later and dash charge cable is using standard things and also only for 3/3T/5 dash charge properties. For other phone you can use it without problems like use it to charge QC3.0 phones etc.
Sent from my OnePlus5 using XDA Labs
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My point isn't so much about the cable as it is the device itself. It is a USB type-c device that doesn't conform to type-c USB standards.
There will be a plethora of usb-c ports on computers and chargers going forward. They are included on every new model of Apple, PC motherboard, and OEM PC - so type-c adoption is there and real. By ignoring these standards and producing a product with a proprietary design they are ostracizing their devices, and by extension their users, from simple and convenient charging methods. It ensures lots of sales of Dash chargers though.
It's a **** move straight from the Apple playbook. Apple made billions from the 30 pin to lightning connector change, and they will do it again with the lightning to Type-C change.
This Oppo/OP Dash charger isn't something consumers should be championing. It's not something Oppo/OP should be forcing on consumers either.
Elnrik said:
Should, but I don't think it is. Q: why would the OP5 not fast charge over a normal type-c connection if it were standards compliant? Answer: it doesn't comply with standards.
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I don't think your statement is accurate, the newer USB C Power Delivery specs allows voltages up to 20 volts and amperages up to 5 amps, the dash charger specs use 5 volts on 4 amps, well within USB C PD specs. The fact that their technology is proprietary does not mean it's not standards compliant.
There is also the very important difference between voltage and amperage, voltage is pushed to devices so it's always important that what you are using within the voltage required by the device. Amperage on the other hand is pulled by the device so the charger will allow the device to pull as much amperage as it needs as long as it doesn't go over it's own capacity. Think about your standard US outlet, it works at 120 Volts and at either 15 to 20 amps, you can connect as many 120V devices to it as long as you don't exceed its amperage.
That being said, the reason other usb cables don't work on the dash charger block is because the usb A side probably has different resistors, One + cables probably have higher resistors than regular, run of the mill usb C-A cables. That was the issue with the first cables that came out a few years ago, they had pull-up resistors with the wrong Ohm rating.
Here is a link to a PDF file explaining USB C Power Specs, keep in mind though that the eventual idea is to only use USB C-C cables and not the USB C-A cables that are the cause of so much headaches.
HueleSnaiL said:
I don't think your statement is accurate, the newer USB C Power Delivery specs allows voltages up to 20 volts and amperages up to 5 amps, the dash charger specs use 5 volts on 4 amps, well within USB C PD specs. The fact that their technology is proprietary does not mean it's not standards compliant.
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The listed power specs are only half the picture. The negotiation between devices is critical in getting those power numbers. That a OP5 can't draw above 900mA on a fully compliant 3.1 cable from a PD capable Type-C port shows it's not compliant. Its not negotiating power draw the way a standard Type-C device should.
And yes, I've already read all the spec docs. Thanks though.
Elnrik said:
The listed power specs are only half the picture. The negotiation between devices is critical in getting those power numbers. That a OP5 can't draw above 900mA on a fully compliant 3.1 cable from a PD capable Type-C port shows it's not compliant. Its not negotiating power draw the way a standard Type-C device should.
And yes, I've already read all the spec docs. Thanks though.
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The phone itself doesn't have to comply to anything, the chargers and cables do since they are the ones providing the charge. The standards are there to determine thresholds on how much and how little current they can work with. The circuitry on the phone and battery are the ones who tell the charger how much current they need to charge the battery without warming it too much or overcharging it. Different combinations of chargers and cables will give you a lot of different charging speeds but that's because there are so many chargers and cables with different ratings that devices err on the side of caution when they can't recognize the charger that it's being plugged into them. It's kind of a unfortunate thing that companies like Motorola, Huawei, OnePlus and Qualcomm use different charging specs but all of them work within the 15 to 20 watts of power for fast charging, so it's not a really big difference.
The reason for the difference in charging speeds between the dash charger/cable and other chargers is that 1 + charger offloads the current regulation to the charger itself rather than leaving current regulation to the phone, like other fast charging devices, that's why 1 + phones fast charge at cooler temperatures than other fast charging technologies.
Now, why your phone doesn't go above 900mA on a regular cable is beyond me, the first photo I attached is of my phone connected to the dash charger via this cable and the second one is of the same cable connected to this wall outlet.
Elnrik said:
Should, but I don't think it is. Q: why would the OP5 not fast charge over a normal type-c connection if it were standards compliant? Answer: it doesn't comply with standards.
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That's a fallacy. To comply with the standards does not mean, that everything is exactly the same. The USB-standard is a little bit more complex than just "pin 1 of one end has to be connected to pin 1 of the other end". The USB-standard defines what is allowed, so no devices will get damaged and to ensure a "minimum" data and power connectivity of let's say at least USB 2.0.
That's what these cables and chargers offer: They don't violate the USB standards. They allow a data connection with USB 2.0 also for non OP-devices. They also allow "normal power" (5V 500mA). They don't damage other devices. They just "work" as they should. But they offer "additional extras" (dash charging) when all three parts (charger, cable, phone) are compatible.
So they comply with the standards while offering additional features and that means, that other cables/chargers, which also comply with the standards but don't offer the extras, won't be able to dash charge.
Anyone tried to see whether using the oneplus cables on QC devices + QC wall plug supports Quick Charging?
I get 2a off my 3a rated PD c to c cables and 38w PD charger.
The only PD compatible android chipset I know of is made by mediatek at present.
I bought this power bank: https://www.amazon.com/gp/product/B01LRQDAEI/ref=oh_aui_detailpage_o03_s00?ie=UTF8&psc=1
Unfortunately, it doesn't fast charge my Mate 10 Pro. I have a USB C PD car charger and wall charger, both of which work fine and fast charge properly. (Tried multiple cables too). I'm wondering if there's some negotiation issue because this power bank has a bidirectional USB C port (i.e. you also charge the power bank via USB C).
I'm gonna try this one next: https://www.amazon.com/gp/product/B075NXR2T4/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1
Anyone know of a USB C PD power bank that works?
https://www.ebay.com/itm/HUAWEI-Two...e=STRK:MEBIDX:IT&_trksid=p2055119.m1438.l2649
https://www.amazon.de/gp/product/B077TB39W5/ref=ox_sc_act_title_1?smid=A3JWKAKR8XB7XF&psc=1
They may not deliver to your location
Hmm those would indeed probably work. I'm really looking for something that supports USB PD so it will work with all my other devices though...
The Mate 10 pro is not USB PD compliant.
You can kind of "quick charge" it by using a non standard charging protocol, like 9V 1,5A, but truly "supercharger" at 5V 5A, only with a Huawei supercharger device / cable.
So probably the other chargers you have support other proprietary 10 and 15w solutions that your power bank doesn't.
Luinwethion said:
The Mate 10 pro is not USB PD compliant.
You can kind of "quick charge" it by using a non standard charging protocol, like 9V 1,5A, but truly "supercharger" at 5V 5A, only with a Huawei supercharger device / cable.
So probably the other chargers you have support other proprietary 10 and 15w solutions that your power bank doesn't.
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Click to collapse
So I ended up buying a USB C power meter. Despite the phone not supporting USB PD, as you claim, it negotiates 16W (9Vx1.8A) from all four charging devices I've tried. But for some reason the power banks don't activate fast charging, while the chargers do... I'm not sure where all the current is going, if not the battery.
FWIW, ugreen seems to think USB PD is supported: https://www.ugreen.com/news/186-en.html
kaysond said:
So I ended up buying a USB C power meter. Despite the phone not supporting USB PD, as you claim, it negotiates 16W (9Vx1.8A) from all four charging devices I've tried. But for some reason the power banks don't activate fast charging, while the chargers do... I'm not sure where all the current is going, if not the battery.
FWIW, ugreen seems to think USB PD is supported: https://www.ugreen.com/news/186-en.html
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Click to collapse
Luinwethion said:
You can kind of "quick charge" it by using a non standard charging protocol, like 9V 1,5A, but truly "supercharger" at 5V 5A, only with a Huawei supercharger device / cable.
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Click to collapse
I never said that the Mate wouldn't charge a faster rates, I said it isn't PD compliant, if it was USB-PD compliant, you'd get 22W.
Most chargers / power bank have compatibility for the until now used "broken" quick charging protocols, just because most devices don't support PD as of right now.
I wished the Mate would have support for PD, this would also mean fast charging and data stream at the same time (by using a dock), but try and plugging a dock that's USB-PD compliant (like the many found for the MacBooks) and plug a USB device or a HDMI cable and charging speeds drops significantly.
Luinwethion said:
I never said that the Mate wouldn't charge a faster rates, I said it isn't PD compliant, if it was USB-PD compliant, you'd get 22W.
Most chargers / power bank have compatibility for the until now used "broken" quick charging protocols, just because most devices don't support PD as of right now.
I wished the Mate would have support for PD, this would also mean fast charging and data stream at the same time (by using a dock), but try and plugging a dock that's USB-PD compliant (like the many found for the MacBooks) and plug a USB device or a HDMI cable and charging speeds drops significantly.
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What makes you think it doesn't support PD? It's obviously negotiating power somehow, and the cable I used doesn't have the D+/D- pins, so it would have to be using some other protocol over USB C...
Also none of this really explains why it's drawing 1.8A off 9V from the power banks, but not fast charging.
kaysond said:
What makes you think it doesn't support PD? It's obviously negotiating power somehow, and the cable I used doesn't have the D+/D- pins, so it would have to be using some other protocol over USB C...
Also none of this really explains why it's drawing 1.8A off 9V from the power banks, but not fast charging.
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Click to collapse
To make terminology clear, we are talking about USB-PD rev. 2, the one found in th Pixel, MacBook, and others right? Not rev 1 or the USB battery charging protocol, those are basically outdated.
Because I see you're using a modified cable and PD rev2 needs a USB-C to C compliant cable, the specifications calls for 4 power & ground pairs and a separated communication bus.
That's why USB-PD rev2 cannot be served via USB-A plug.
Well, why do I say the Mate 10 is not PD compliant, well, take a PD compliant charger, cable and dock, connect it all to the Mate 10 and watch it either charge a 0,5mAh rate or the phone go crazy it will recognize a charger, then say it's disconnected, then say it's connected again, and so on in a continuous loop.
A USB-PD compliant device is able to handle fast charging, data and video output all at one.
I've tested this with various combination of docks, cables and chargers, and none worked... Intimation online is though to find, Huawei's official statement is "our phone supports the best, fastest, safest....." Bla bla bla....
Since most PD rev2 chargers are backwards compatible, you can use them to charge your phone just not at the "optimum rate"... 9v 2A (ish) is the last generation (Huawei P9) Huawei fast charge, and it's mostly the same profile as the Samsung fast charging, QC 2.0 and some other variants, the Mate 10 supports it too at this theoretical of 18W (although I suppose that the speed will be much slower).
The optimum "supercharger speed" is 4.5V 5A, and it's not a standard at all, that's why only Huawei chargers will be able to provide it, I also suppose that there is a lock preventing users from use the dash charger power brick for example.
But back on track, when you said that your phone is not Fast charging, I supposed that you meant that the phone was charging at a really low rate, but is it? I mean what's the difference that you are seeing between your power bank and the other chargers?
Have you tried using a USB-C to C cable from your power bank?
Luinwethion said:
To make terminology clear, we are talking about USB-PD rev. 2, the one found in th Pixel, MacBook, and others right? Not rev 1 or the USB battery charging protocol, those are basically outdated.
Because I see you're using a modified cable and PD rev2 needs a USB-C to C compliant cable, the specifications calls for 4 power & ground pairs and a separated communication bus.
That's why USB-PD rev2 cannot be served via USB-A plug.
Well, why do I say the Mate 10 is not PD compliant, well, take a PD compliant charger, cable and dock, connect it all to the Mate 10 and watch it either charge a 0,5mAh rate or the phone go crazy it will recognize a charger, then say it's disconnected, then say it's connected again, and so on in a continuous loop.
A USB-PD compliant device is able to handle fast charging, data and video output all at one.
I've tested this with various combination of docks, cables and chargers, and none worked... Intimation online is though to find, Huawei's official statement is "our phone supports the best, fastest, safest....." Bla bla bla....
Since most PD rev2 chargers are backwards compatible, you can use them to charge your phone just not at the "optimum rate"... 9v 2A (ish) is the last generation (Huawei P9) Huawei fast charge, and it's mostly the same profile as the Samsung fast charging, QC 2.0 and some other variants, the Mate 10 supports it too at this theoretical of 18W (although I suppose that the speed will be much slower).
The optimum "supercharger speed" is 4.5V 5A, and it's not a standard at all, that's why only Huawei chargers will be able to provide it, I also suppose that there is a lock preventing users from use the dash charger power brick for example.
But back on track, when you said that your phone is not Fast charging, I supposed that you meant that the phone was charging at a really low rate, but is it? I mean what's the difference that you are seeing between your power bank and the other chargers?
Have you tried using a USB-C to C cable from your power bank?
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Click to collapse
Correct. I'm talking about USB PD 2.0. That's interesting, because I don't see the same behavior you're talking about. I wonder if you have a different model? Mine is BLA-A09
All of my charging devices are proper USB C, and support PD 2.0, and I used a marked 100W certified USB C cable. I later used a cable without D+/D- pins to test if its negotiating power using something other than USB PD. Behavior was the same.
This is what I sent to Huawei, and they basically told me the phone is optimized for their own charger. The problem is that despite negotiating, and drawing the same power from all chargers, with the power banks, it does not go into fast charge mode, which you can see from the different charging icon and the longer time to charge.
Device: Nekteck Wall Charger
Link: https://www.amazon.com/gp/product/B0721KG2Q7/ref=oh_aui_detailpage_o04_s01?ie=UTF8&psc=1
Maximum Output Power: 65W
Power Delivered to Mate 10 Pro: 9.07V * 1.82A = 16.51W (https://i.imgur.com/ryDJuS0.jpg)
Charging State: Fast Charging (https://i.imgur.com/OYyQ5qK.jpg)
Device: RAVPower 26800mAH Power Bank
Link: https://www.amazon.com/gp/product/B01LRQDAEI/ref=oh_aui_detailpage_o04_s00?ie=UTF8&psc=1
Maximum Output Power: 30W
Power Delivered to Mate 10 Pro: 9.09V * 1.82A = 16.54W (https://i.imgur.com/8N42dyd.jpg)
Charging State: Regular Charging (https://i.imgur.com/mz9XHz1.jpg)
Device: iMuto 20100mAH Power Bank
Link: https://www.amazon.com/gp/product/B075NXR2T4/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1
Maximum Output Power: 45W
Power Delivered to Mate 10 Pro: 8.98V * 1.82A = 16.34W (https://i.imgur.com/hbUTmYD.jpg)
Charging State: Regular Charging (https://i.imgur.com/364ADEe.jpg)
Device: Nekteck Car Charger
Link: https://www.amazon.com/gp/product/B075WQQG7C/ref=oh_aui_detailpage_o05_s00?ie=UTF8&psc=1
Maximum Output Power: 45W
Power Delivered to Mate 10 Pro: ~16.5W
Charging State: Fast Charging
(Saitech Power Meter: https://www.amazon.com/gp/product/B01MT8MC3N/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1)
kaysond said:
Correct. I'm talking about USB PD 2.0. That's interesting, because I don't see the same behavior you're talking about. I wonder if you have a different model? Mine is BLA-A09
All of my charging devices are proper USB C, and support PD 2.0, and I used a marked 100W certified USB C cable. I later used a cable without D+/D- pins to test if its negotiating power using something other than USB PD. Behavior was the same.
This is what I sent to Huawei, and they basically told me the phone is optimized for their own charger. The problem is that despite negotiating, and drawing the same power from all chargers, with the power banks, it does not go into fast charge mode, which you can see from the different charging icon and the longer time to charge.
Device: Nekteck Wall Charger
Link: https://www.amazon.com/gp/product/B0721KG2Q7/ref=oh_aui_detailpage_o04_s01?ie=UTF8&psc=1
Maximum Output Power: 65W
Power Delivered to Mate 10 Pro: 9.07V * 1.82A = 16.51W (https://i.imgur.com/ryDJuS0.jpg)
Charging State: Fast Charging (https://i.imgur.com/OYyQ5qK.jpg)
Device: RAVPower 26800mAH Power Bank
Link: https://www.amazon.com/gp/product/B01LRQDAEI/ref=oh_aui_detailpage_o04_s00?ie=UTF8&psc=1
Maximum Output Power: 30W
Power Delivered to Mate 10 Pro: 9.09V * 1.82A = 16.54W (https://i.imgur.com/8N42dyd.jpg)
Charging State: Regular Charging (https://i.imgur.com/mz9XHz1.jpg)
Device: iMuto 20100mAH Power Bank
Link: https://www.amazon.com/gp/product/B075NXR2T4/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1
Maximum Output Power: 45W
Power Delivered to Mate 10 Pro: 8.98V * 1.82A = 16.34W (https://i.imgur.com/hbUTmYD.jpg)
Charging State: Regular Charging (https://i.imgur.com/364ADEe.jpg)
Device: Nekteck Car Charger
Link: https://www.amazon.com/gp/product/B075WQQG7C/ref=oh_aui_detailpage_o05_s00?ie=UTF8&psc=1
Maximum Output Power: 45W
Power Delivered to Mate 10 Pro: ~16.5W
Charging State: Fast Charging
(Saitech Power Meter: https://www.amazon.com/gp/product/B01MT8MC3N/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1)
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Ah clear, the iconography is a bit different on my device, must be just a firmware difference.
Your phone is drawing the same amount of power mostly, the charging rate should be very similar.
What about something like ampere or accu battery to check the estimated charging rate?
There are specialized devices for checking the negotiation between both devices, I suppose that it's just a question of a different chipset not triggering the fast charging status in de kernel.
Ps: my phone charges normally, I just that when connected to a dock, sadly it can't charge at more than 2,5W (at most 4w), because it isn't compatible with the newest standard that allows for double role data and power.
Luinwethion said:
Ah clear, the iconography is a bit different on my device, must be just a firmware difference.
Your phone is drawing the same amount of power mostly, the charging rate should be very similar.
What about something like ampere or accu battery to check the estimated charging rate?
There are specialized devices for checking the negotiation between both devices, I suppose that it's just a question of a different chipset not triggering the fast charging status in de kernel.
Ps: my phone charges normally, I just that when connected to a dock, sadly it can't charge at more than 2,5W (at most 4w), because it isn't compatible with the newest standard that allows for double role data and power.
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Good suggestion. I used accu battery and compared charging between battery and wall charger for 5min at around the same battery %. They're charging at exactly the same rate. So it's just some kind of UI bug that's showing the wrong icon and charge time... Now how do I get them to fix it?
That is a bummer that dual power+data is not supported!
There was a Chinese website which published some USB PD charging tests with the Huawei Mate 10. 28 different chargers were tested. I can't recall the URL offhand.
IIRC, general conclusion from their tests was that the Mate 10 could draw 9V 2A from most USB PD chargers. And that the Mate 10 only accepts 9V input voltage for USB PD fast charging.
---------- Post added at 03:44 AM ---------- Previous post was at 03:31 AM ----------
Here's the link (remove spaces below). Use Google Chrome to translate to English.
www . chongdiantou . com / wp / archives / 19467.html
On another thread, Berkowich made mention that Tab S4 supports PD Power, but not CH3.
These were not terms I was familiar with, so I turned to Google... So QC, QC 2.0 and QC 3.0 make sense. The "adaptive fast charger" in the box with the Tab S4 has outputs at 5 & 9 volts, so I assume it is QC 2.0 and it switches between 5V and 9V as the battery is filled to more efficiently charge the battery. But I see QC2 talks about 5V, 9V and 12V. So is this the same and/or safe? And it isn't clear to me how PD Chargers are different? Just more current? Are they safe for the Tab S4? What is the type of non-Samsung charger to buy?
Thanks
Joe
PD typically refers to USB Power Delivery, which is a fast charging specification developed by the non-profit USB-IF organization. It is the actual open-industry standard.
Quick Charge, even though it is in many devices, is actually a proprietary standard owned by Qualcomm. Some device manufacturers choose to not implement QC even when they use Qualcomm chips in order to save on licensing fees.
QC 2.0 & 3.0 are not in compliance with the USB-PD specifications. However, QC 4.0 is.
Samsung has its own quick charging technology and only some but not all of their devices are compatible with QC 2.0 standard.
USB-PD - https://www.usb.org/usb-charger-pd
Official Certified QC device list - https://www.qualcomm.com/documents/quick-charge-device-list (Note that the Tab S4 is nowhere on the list)
Let me reask the question....
I have have several different types of chargers... Older 1A and less chargers from miscellaneous devices. A few 2.4A / 5V chargers that either came or were purchased for older devices I have around the house. Two Samsung Adaptive Fast chargers (9V/1.67A + 5V/2A), one that came with the Tab S4 and another that came with an S7 Edge.
So which of these is optimum for charging the Tab S4?
Will the 2.4A charger be slower than the 2A adaptive charger?
Is there another type of charger that would work better for the S4?
Can some chargers damage the S4?
Does it make a difference if I'm using an HDMI/USB hub? (Mine always says I'm slow charging / draining the battery when I plug the 2A adaptive charger into the hub.)
Thanks for your help -- this is a more complicated subject than I thought.
Edit: there's a link on the charge time thread that leads to another link that helps answer some of my questions.
https://www.xda-developers.com/charging-comparison-oneplus-huawei/
https://www.digitaltrends.com/mobile/how-does-fast-charging-work/
This seems to say that the best bet is a Samsung adaptive charger or a QC 2.0 charger that will throttle back to Samsung's standard.
This doesn't answer what is best when using a hub, and what dangers there might be using non Samsung chargers.
On a related subject, years ago I learned that all USB 2.0 charging cables were not equal -- that you need to look at the gauge of the charging wires, and that you could have huge differences in charge speed based on the cable you used. Are all USB C cables equal with respect to charging? Or do you need to look for fatter gauage / bigger wires to get more current / less voltage drop over the cable?
thanks,
Joe
drjoe1 said:
Let me reask the question....
I have have several different types of chargers... Older 1A and less chargers from miscellaneous devices. A few 2.4A / 5V chargers that either came or were purchased for older devices I have around the house. Two Samsung Adaptive Fast chargers (9V/1.67A + 5V/2A), one that came with the Tab S4 and another that came with an S7 Edge.
So which of these is optimum for charging the Tab S4?
Will the 2.4A charger be slower than the 2A adaptive charger?
Is there another type of charger that would work better for the S4?
Can some chargers damage the S4?
Does it make a difference if I'm using an HDMI/USB hub? (Mine always says I'm slow charging / draining the battery when I plug the 2A adaptive charger into the hub.)
Thanks for your help -- this is a more complicated subject than I thought.
Edit: there's a link on the charge time thread that leads to another link that helps answer some of my questions.
https://www.xda-developers.com/charging-comparison-oneplus-huawei/
https://www.digitaltrends.com/mobile/how-does-fast-charging-work/
This seems to say that the best bet is a Samsung adaptive charger or a QC 2.0 charger that will throttle back to Samsung's standard.
This doesn't answer what is best when using a hub, and what dangers there might be using non Samsung chargers.
On a related subject, years ago I learned that all USB 2.0 charging cables were not equal -- that you need to look at the gauge of the charging wires, and that you could have huge differences in charge speed based on the cable you used. Are all USB C cables equal with respect to charging? Or do you need to look for fatter gauage / bigger wires to get more current / less voltage drop over the cable?
thanks,
Joe
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Actually does someone that has an accurate usb meter help us. When i look for the charging support for the Snapdragon 835 on the web, it says QC4.0 but i can't find any QC4.0 chargers and i think it is the same with PD that i say on the other thread (it is just a think by the way because there is no QC4.0 chargers soo it is maybe a PD equivalent).
By the way when you are using the HDMI dongle(just HDMI and charging) did you use the original charger and the cable because there is no slow charging notification when i use it?