Not quick charging on QC2 charger? - Xiaomi Mi 8 Lite Questions & Answers

Got this phone for a week, I know it comes with QC3 enabled but it only comes with a 10w charger in the box so I used my own QC chargers.
I charged it with a QC3 charger and all is fine, charged quickly with the QC icon showing next to the battery bar. No problems.
But when I try charging it with a QC2 charger it doesn't charge at all! If anything, it slowly discharges, 28% to 26% over 30 minutes. It still shows as quick charge on the lock screen and has the QC icon showing next to the battery bar. However AccuBattery shows -300mA instead of +XXXXmA.
The QC2 charger is working correctly, I had tested it with a ZTE Axon 7 which also has QC3 and it charges quickly and successfully. Same cable as well so it is not a cable fault.
Anyone has any idea to why? I thought QC 2 and 3 are both inter compatible and backwards compatible as well?

Maybe your charger is damaged. Im charging my device with a QC2 charger from a Galaxy S7

santiagog242 said:
Maybe your charger is damaged. Im charging my device with a QC2 charger from a Galaxy S7
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Click to collapse
As I stated in my OP, that charger (and cable) was tested on an Axon 7 with QC3 and it charges that phone quickly.

Related

Fast Charging

Using the app Ampere, my V10 does not take advantage of the fast charge 2.0. I get to charging at or around 700mA, but mostly sub 500mA or less. I've tried using the charger that came with the phone, I purchased an Anker 40W 5-Port charger and recently a Mobiilink 6-Port 60W charger all with the same results. Any ideas as to what may be wrong (if any). My phone has been charging for the last 3hrs and is only at 50% after being plugged in at 9%. Thanks in advance for any help.
dkool1 said:
Using the app Ampere, my V10 does not take advantage of the fast charge 2.0. I get to charging at or around 700mA, but mostly sub 500mA or less. I've tried using the charger that came with the phone, I purchased an Anker 40W 5-Port charger and recently a Mobiilink 6-Port 60W charger all with the same results. Any ideas as to what may be wrong (if any). My phone has been charging for the last 3hrs and is only at 50% after being plugged in at 9%. Thanks in advance for any help.
Click to expand...
Click to collapse
As far as I can determine, neither of the chargers you mention are Qualcomm Quick charge certified. So you won't be able to get the fastest charge with them. Anker does make chargers that are qualcomm certified, but the one you have isn't. Mobilink has zero devices that are certified.
No matter what words are used by the manufacturer, unless they are qualcomm certified you are more than likely out of luck..
What about the charger that came with the phone? It is certified and will most definiitely give you a fast charge.
The V10 is equiped with qualcomm fast charge 2.0 technology. Fast charge 3.0 is available on a few devices and there are lots of manufacturers advertising chargers that are quallcomm fast charge 3.0 certified. I personally would avoid these as they won't speed up the charge rate of the V10 and are usually sold at a premium price.
Thanks for the reply. The phone DOES quick charge. It seems that when I'm using the phone while charging, it charges slowly (>500mA) . When I set it down, it will charge fast (<1.5A). The charger that came with the phone is Qualcomm fast charge 2.0 as well as the 5-port Mobiilink (only one port).

[CHARGE TIME] [Q.CHARGE] Google Pixel Charging time @Verious chargers/P.Banks

Here there the main aim is to show the charging time from various charger
10W, 15W, 35W etc... etc....
QC1.0, QC2.0, QC3.0 Chargers & Powerbanks
Am waiting for my new Pixel phone when i got i will fill this thread by all the tests
It doesn't seem to support qualcomm's quick charge even though the chip has qc 3.0 capabilities. It uses USB c fast charging with Google's 18w charger.
No chance it will support Qualcomm Quick Charge as that technology breaks USB-C requirements.
No quick charge....
Is there anything wrong with using a QC2 charger with the pixel? I have one in my car from my old S6 and just swapped the cables. Seems to charge quick and without issues but I hope I'm not doing any unseen damage.
I was charging with the main google's 18w charger using the 'otg' and the usb 3 cable and the results was from 0% to 100% ~1.20hrs and just removing the otg from the charge and using the usb type C on both side the charge from 0% to 100% was ~40min..
Hi,
I will get the phone in the next weeks and i'm still trying to find good 3rd party charger as pixel in my country is sold without the original one.
Any good 18W chargers that you know that might work?

Does the M5 have Quick Charge or not?

When I say Quick Charge, I mean proper QC technology, not some "quick" or "fast" charging method unique to Huawei only.
The stock charger says [email protected] or [email protected] QC2 and 3 can do [email protected] However when I put the M5 onto my QC3 charger, it only draws [email protected] as tested with a cable with V/A reading.
Charger and cable had been tested to work at proper QC power with my ZTE Axon 7, drawing 18W and also a Moto G4 Turbo Charging.
The strange thing is, if there is some "special" Huawei only technology on the stock charger, it still charges my Axon 7 and G4 with "standard" QC3. Anyone has been successful charging their M5 on a standard QC2/3 charger?
Only does fast charge when the screen is turned off.
there's also a possibility that your volt/amp meter is blocking the fast charge also.
Michaelflat1 said:
Only does fast charge when the screen is turned off.
there's also a possibility that your volt/amp meter is blocking the fast charge also.
Click to expand...
Click to collapse
Tried it with screen on or off, and even with the M5 off, still 10W on a non stock QC3 charger.
Cable definitely works for quick charge because I used the same cable on the stock charger and it reads 18W, so it is not blocking anything.
I use this QC3 charger. I get the dual lightning bolt symbol which I think means fast charge.
https://www.amazon.ca/gp/product/B01GFDSO1M
Obveron said:
I use this QC3 charger. I get the dual lightning bolt symbol which I think means fast charge.
https://www.amazon.ca/gp/product/B01GFDSO1M
Click to expand...
Click to collapse
Yes, 2 lighting symbol means QCing. However it does not show on my non stock QC charger. My other QC-able devices does on both that charger and the Huawei stock one, strange.
Huawei's fast charge is not part of the Qualcomm's QC standard. However I have found that QC3 is cross compatible with Huawei M5's fast charge.
My 2 cents.
For what its worth, I use this charger:
https://www.amazon.ca/gp/product/B01GFDSO1M
with this cable:
https://www.amazon.ca/gp/product/B01E716UQA
Not the cheapest available, but quality is top notch.
Obveron said:
Huawei's fast charge is not part of the Qualcomm's QC standard. However I have found that QC3 is cross compatible with Huawei M5's fast charge.
My 2 cents.
For what its worth, I use this charger:
https://www.amazon.ca/gp/product/B01GFDSO1M
with this cable:
https://www.amazon.ca/gp/product/B01E716UQA
Not the cheapest available, but quality is top notch.
Click to expand...
Click to collapse
This is what I use: http://amzn.eu/cLL0gg9
Cable shouldn't matter for QC and proven not to matter as I used the same random cable (and also the cable with the V/A meter) on this charger and the stock charger. It QC my M5 and Axon 7 on the stock charger but only QC my phone on the Aukey charger.
I have a USB C charger ordered, will see if that works better with the M5.
Obveron said:
Huawei's fast charge is not part of the Qualcomm's QC standard. However I have found that QC3 is cross compatible with Huawei M5's fast charge.
My 2 cents.
For what its worth, I use this charger:
https://www.amazon.ca/gp/product/B01GFDSO1M
with this cable:
https://www.amazon.ca/gp/product/B01E716UQA
Not the cheapest available, but quality is top notch.
Click to expand...
Click to collapse
I had since discovered that Huawei does not use QC standards but their own FCP for fast charge. Some QC chargers have that ability built in, but not all. Time to invest in more chargers I think.
Further update: My charger with USB PD arrived and no, it does not charge the M5 (FCP) nor my Axon 7 (QC3) fast. However the M5 charges off my Tronsmart portable charger with VoltIQ and QC3. I had done a bit of digging around and found (so far) that only Tronsmart make any chargers that can support both standards at the same time from the same port. This is great as it is when I am out and about I will need quick charging most.
Sadly they do not (at the moment) make a charger with, say 2 x QC + VoltIQ ports. It is either 1 x QC + VoltIQ and 4 x normal or 5 x QC + VoltIQ and that one costs a bit too much.
alvinlwh said:
Further update: My charger with USB PD arrived and no, it does not charge the M5 (FCP) nor my Axon 7 (QC3) fast. However the M5 charges off my Tronsmart portable charger with VoltIQ and QC3. I had done a bit of digging around and found (so far) that only Tronsmart make any chargers that can support both standards at the same time from the same port. This is great as it is when I am out and about I will need quick charging most.
Sadly they do not (at the moment) make a charger with, say 2 x QC + VoltIQ ports. It is either 1 x QC + VoltIQ and 4 x normal or 5 x QC + VoltIQ and that one costs a bit too much.
Click to expand...
Click to collapse
I read this article and it says BlitzWolf BW-S6 knows the FCP charging and it will work the fast charging on Huawei. I will order one to try it...
almaalma74 said:
I read this article and it says BlitzWolf BW-S6 knows the FCP charging and it will work the fast charging on Huawei. I will order one to try it...
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Click to collapse
There are many chargers that can QC and FCP at the same time, BUT very few that have 2 or more ports that can do them all at once (or at least FCP+QC on one and QC on the other), just one port and the other one at normal speed. There is a Tronsmart one with 5 ports but it is quite costly.
What happens if you just plug m5 into Google phone usb-c fast charger? Like for my nexus 6p. Slow charging? How much slower? Really want one USB c charger for all my stuff.
StephenMSmith said:
What happens if you just plug m5 into Google phone usb-c fast charger? Like for my nexus 6p. Slow charging? How much slower? Really want one USB c charger for all my stuff.
Click to expand...
Click to collapse
Not sure what the nexus comes with. However I had tried it with QC3 charger and a USB C PD charger and both just slow charges. Only Huawei original charger or SOME chargers with VoltIQ can fast charge the M5.
plugging in my USB tester proves that actually it takes a 9v 2a charge from original power adapter and cable. Whilst screen is on also.
I'm looking at various chargers and cables to make use of quick charge, or at least fast charge. Correct me if I'm wrong, but I need a FCP capable charger, and a 5A cable?
Do you think these will work?
https://www.amazon.com/gp/product/B01GFE90H8/ref=nav_signin?
https://www.amazon.ca/laddertek-Com...1533821459&sr=1-10&keywords=magnetic+usb-c+5a
Ivanbarker said:
I'm looking at various chargers and cables to make use of quick charge, or at least fast charge. Correct me if I'm wrong, but I need a FCP capable charger, and a 5A cable?
Do you think these will work?
https://www.amazon.com/gp/product/B01GFE90H8/ref=nav_signin?
https://www.amazon.ca/laddertek-Com...1533821459&sr=1-10&keywords=magnetic+usb-c+5a
Click to expand...
Click to collapse
I can confirm that you do not need the original cable for FCP charge. I used a USB 3.0 (blue plug) cable that works with QC3 for FCP and this is confirmed by a USB V/A meter.
I think Huawei has their own standard. Some of my QC 2 chargers work, some don't using the same cable.
Frustrating that I can't use my Google phone usb-c charger for fast charging. How much slower is it using non Huawei fast charger? Any ideas?
StephenMSmith said:
Frustrating that I can't use my Google phone usb-c charger for fast charging. How much slower is it using non Huawei fast charger? Any ideas?
Click to expand...
Click to collapse
Huawei FCP is [email protected]=18W or [email protected]=22.5W. Not sure which one our tablet uses, at work cannot check the actual charger. However when plugged into a QC2/3 charger, it charges at [email protected]=10W. Meaning it will be between 80% to 125% more time with a non FCP charger.
Having just picked up my M5 8.4, confirm my PD charger is (apparently) quick charging the device. It says fast charge on the lock screen and I've got the double lightning bolt in the status bar. Score!

Baseus 30W charger at Mi 9

does anyone tried to charge Mi 9 with this Baseus charger?
https://www.aliexpress.com/item/32988045731.html?spm=a2g0o.cart.0.0.71f43c00TyHdOp
is this charger compatible with 27W xiaomi charging?
I think it's just Quick Charge 3.0. You should buy the 27W charger imo. But i could be wrong
I have it, it does quick charge but not charge turbo
Good I stopped by XDA before purchasing it.
It does say if you scroll down on its specs it's a QC4 charger, but I assumed the described output would be a sum of both USB ports working simultaneously.
Already posted about it some weeks ago.
https://forum.xda-developers.com/showpost.php?p=79530777&postcount=73
It's indeed just a QC 4.0 charger. Will only do 18W.
Hi, I have one. For it to work properly you have to have the cable of more than 30w.
Load much faster than the original that comes in the box. I did a quick test from 75% to 100% with the phone turned off and charged in 25min; so you can assume if it's fast or not.
WTF ; does this phone even do QC4 ... the Xiaomi offical charger is 3.0 and I bought a $68 dollars Belkin QC : 4.0+ offical as per reviews and it caps out at. 3470 : it NEVER has said fast or TURBO and it ofen Ampere reports 1800 mah ? Can anyone explain this in any way
Do you really have to post the same thing in every single charger related topic ?
Ataemonus said:
Do you really have to post the same thing in every single charger related topic ?
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Click to collapse
I couldn't find this :/
hardtheory said:
I have it, it does quick charge but not charge turbo
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Click to collapse
Thanks for info dude
I suspect that Turbo Charge only happens with the 27W factory charger.
Because my Hama QC4+ charger, certified by Qualcomm, charges definitely faster than the 18W charger found in the package, but does not say Charge Fast or even Charge Turbo.
twojastara-5 said:
does anyone tried to charge Mi 9 with this Baseus charger?
https://www.aliexpress.com/item/32988045731.html?spm=a2g0o.cart.0.0.71f43c00TyHdOp
is this charger compatible with 27W xiaomi charging?
Click to expand...
Click to collapse
Call me crazy but I think it will charge the device at 27W speed.
A lot of people don't seem to realize but the "Xiaomi Turbo Charger 27W" is actually QC3, not QC4+, and it does charge the device at 27W. If you find a QC4+ charger that supports 27W and up, you will still get 27W charging but you won't see "Charge Turbo" because it will use the better, newer charging standard.
This can make charge turbo QC 3.0 and it's cheaper and with more ports:
https://www.banggood.com/AiNaU-3-US...amsung-S8-Letv-Xiaomi6-mi5-mi6-p-1168215.html
lusp00ky said:
This can make charge turbo QC 3.0 and it's cheaper and with more ports:
https://www.banggood.com/AiNaU-3-US...amsung-S8-Letv-Xiaomi6-mi5-mi6-p-1168215.html
Click to expand...
Click to collapse
Yeah but it can only charge at standard QC3 speeds, aka 18W at max. 9V/2A like the original one does. But the original one can also do 12V/1.5A. So it does not "Turbo Charge".
Careful many poster here are confused. My BELKIN true QC4.0+ never ever charged over 3200mA and averaged out at under 2200mA. Posters who speak about things without testing their theories are really frustrating. Do yourself a favor don't believe this phone accepts QC4 or QC 4.0+ (at least not @July 2019) only QC 3.0 NON FAKE xiaomi 27w can do the 4600mA + it would seem. Turbo charging is required for extremely rapid charge times. Make sure you get OFFICIAL 20V 1.35A from Xiaomi for Turbo Charge sustained charge and under one hour 0--100%
I also purchased a QC 4.0+ Hama DC charger cause Xiaomi doesn't make a DC charger to my knowledge. Guess what ; 18w ish charging speeds .. no Fast or Turbo classification ...
XIAOMI Hoe do you call this phone a QC 4.0/4.0+ unit !!! Cause look close at the charger Turbo pictures they are all using the "Original QC 3.0 Xiaomi charger that we ALL should have got in the box. Instead many of us have wasted tonnes of money and time buying useless to us QC 4.0+ tech that doesn't work or WORSE fake chargers that don't do more than 18w !! By the time we we have ordered 3-4 different chargers trying to get it to work we have to order it on Ali or gearbest or Gearvita. Cause the company does make them after all!! Enjoy the brutal shipping fees and heavy wait times. Well we order this and that trying to get the darn thing to work. So annoyed right now
Hi, I got the original charger and this if it gives the turbocharged 27w charge, however the baseus charger charges the same as the one that comes in the box or with the wireless charge.
I made this short video: https://youtu.be/nFBoPxORzEg
https://forum.xda-developers.com/k20-pro/how-to/mi-9t-pro-30w-charger-experiment-t4003595
read this. Also tested with a mi9 that my fried had. same result.( Turbo charging up to 30W using the baseus charger)
Posted for those who end up here like me and read mixed info
I also have the Baseus charger mentioned above (BS-EU906), the variant with 2 usb A ports.
When I charge with the cable from my samsung galaxy tab S5e it charges with a bit over 4200mA 20w-21w.
But when I charge with my Baseus 2m 5a capable cable (CATSS-B0G), it never goes above 3400mA ~14w.
It still chargers fast, but it is not what was advertised. Both the cable and charger are rated for QC3.
Baseus GaN charger 65W + Baseus 5A cable reaches 5000mA in Ampere, which is assuming 5V (that's what Ampere is assuming), equals to 25W. The fact is voltage in QC is never stable, it's the factor that allows it to dynamically supply power based on various parameters: battery temp, device temp, battery capacity and so on. If you have a USB-C USB doctor (and it should be more accurate than any software based monitoring) you can watch yourself that both the voltage and current are alternating constantly.

Samsung Galaxy S20+ and 45W charger

Hey, is it safe to use original 45W Samsung charger daily? Got it for nice price ($25) from friend's shop.
I read somewhere it's not recommend to use 45W. Also I read S20+ supports 25W only.
Thank you for answers.
It is safe to use the charger but I am not sure if it will be able to charge it at 25W also.
So if I will use 45W, charging will be the same as with original charger?
Tried it, remaining time to fully charged is showing the same with both chargers.
RenikSK said:
So if I will use 45W, charging will be the same as with original charger?
Tried it, remaining time to fully charged is showing the same with both chargers.
Click to expand...
Click to collapse
I have the 45w charger. Charging speed depends on the phone temperature. The phone slows down the charging when phone temperature gets high. It's marginally faster than the one that came with the phone. But it's super fast charging for the first 30 minutes or so compared to our of the box.
So i use the 45w charger at office when I need to charge the phone fast and seldom fully charge it as I would unplug it and go somewhere else.
At home I just plug in the charger that came with the phone for overnight charging. Perhaps not the best to leave it charging overnight but I need a full battery next day.
Even if the charger provides 45w, the phone will only pull what is needed from the charger itself. So if the phone limits itself to 25w, then thats all it will use from the charge available.
Equally, if the charge provided is lower than the maximum the phone can use (i.e. 25w phone but 15w charger), then it will use the maximum from the charge available.
Chargers these days offer a multitude of different voltages and amp ratings, but they are smart and will only send what is requested by the device that is plugged in so there's no chance of accidental over-voltage.
I too have the 45W samsung travel charger and did a comparison on power draw compared to the 25W charger that is included with the phone. I used both the USB C cable that came with the phone (Black) and the thicker cable that came with the 45W charger (White), while measuring the power draw using a power consumption meter that was plugged into the wall between the charger and the outlet. My phone was at 40% charge when I tested. The results are shocking.
Included 25W charger
Phone's Black cable - 27.9 W
Charger's White cable - 27.2 W
Samsung 45W travel charger
Phone's Black cable - 29.7 W
Charger's White cable - 31.3 W
The similar power draw explains the charging speed difference of 10 minutes which many reviewers on youtube have observed. Taking another step, I have read that the S20 Ultra requires the charger to support PPS to achieve (10V, 4.5A) in order to charge at 45W. So why does the 45W travel charger only support (15V, 3A), (20V, 2.25A), (3.3-11V, 4.05A), (3.3-16V, 2.8A) and (3.3-21V, 2.1A)? Even the best case scenario would be to use the (3.3-11V, 4.05A) PPS profile and set it to (10V, 4.05A) to give only 40.5W. I smell a rat.
Interesting. I have also measured power draw but my results are bit diferent.
45W charger was getting up to 41W for 4 mins.
On overall charging speed 0-100% the diference is 10mins, but after charging 20mins I'm getting 54% on 45W and 37% on stock.
17% in 20mins it's a lot of difference.
45W is slowing down up to 1A after that to cool down the phone. 25w have similar behaviour.
Baseus 65W PPS chargers triggers SFC 2.0 but it takes more than 2h to charge fully. Amperage is oscilating as hell.
my Huawei 65w laptop Charger charges my S20U much quicker than the 25w charger i find...
krogoth said:
Interesting. I have also measured power draw but my results are bit diferent.
45W charger was getting up to 41W for 4 mins.
On overall charging speed 0-100% the diference is 10mins, but after charging 20mins I'm getting 54% on 45W and 37% on stock.
17% in 20mins it's a lot of difference.
45W is slowing down up to 1A after that to cool down the phone. 25w have similar behaviour.
Baseus 65W PPS chargers triggers SFC 2.0 but it takes more than 2h to charge fully. Amperage is oscilating as hell.
Click to expand...
Click to collapse
I have been continuously testing and found that if your phone has less than 30% battery and the battery temperature is under 33 ºC, it will charge at 40W. After that, it drops to 30W for the remainder of the charge and then drop again to 20W when the battery is above 80%.
Next step is to find a good battery data logging app which logs battery percentage, battery temperature, charging current and time. Surprising to find that not many apps can do this. Even the Battery Charging Monitor app doesn't log all that data.

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