Charging with Power Delivery - Redmi K20 Pro / Xiaomi Mi 9T Pro Questions & Answe

Do Power Delivery (PD)-only chargers work with the Mi 9T Pro, and if so, at what speeds and which PD version does it support?
Can't really find any tests on this online, I'm surprised it's not standard to be honest -- using one single PD charger for everything is fast becoming the norm.

skleppo said:
Do Power Delivery (PD)-only chargers work with the Mi 9T Pro, and if so, at what speeds and which PD version does it support?
Can't really find any tests on this online, I'm surprised it's not standard to be honest -- using one single PD charger for everything is fast becoming the norm.
Click to expand...
Click to collapse
Yes. Qualcomm QC4+ adheres to PD standards, it's the first time they've done so. Xiaomi haven't used any proprietary charging, they've relied on QC4+ baked on the SD855. You'll get up to 27W charging, depending on the charger and battery level. I find I'm only getting 27W when the battery is very low, normally it's 24W until it's nearing full, but that might be how my charger chooses to deliver the juice.
Not sure what PD version it's using, but I'm sure a Google/Wiki search on Qualcomm QC4+ will provide an answer somewhere.
Edit: a quick look on wiki says that it's PD 3.0

Robbo.5000 said:
Yes. Qualcomm QC4+ adheres to PD standards, it's the first time they've done so. Xiaomi haven't used any proprietary charging, they've relied on QC4+ baked on the SD855. You'll get up to 27W charging, depending on the charger and battery level. I find I'm only getting 27W when the battery is very low, normally it's 24W until it's nearing full, but that might be how my charger chooses to deliver the juice.
Not sure what PD version it's using, but I'm sure a Google/Wiki search on Qualcomm QC4+ will provide an answer somewhere.
Edit: a quick look on wiki says that it's PD 3.0
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Click to collapse
Oh awesome, what charger are you getting those speeds on if I may ask?
You might've just helped me to make my final decision to get the 9T Pro then. The only thing I'm still hesitant about is the lack of HDMI-out and color-notification. If this phone had color notification and HDMI-out... my lord.

skleppo said:
Oh awesome, what charger are you getting those speeds on if I may ask?
You might've just helped me to make my final decision to get the 9T Pro then. The only thing I'm still hesitant about is the lack of HDMI-out and color-notification. If this phone had color notification and HDMI-out... my lord.
Click to expand...
Click to collapse
I went for a bit of a gamble on AliExpress and got this one.
https://s.click.aliexpress.com/e/tGXqRBeY
It was a brand I hadn't heard of but had good reviews and was cheaper than the known brands. So far I'm happy with it, does exactly what it says on the tin.
For the price there's nothing much to complain about, you start adding on all the nice to have extras and suddenly the phone would be half as much again.

Robbo.5000 said:
I went for a bit of a gamble on AliExpress and got this one.
https://s.click.aliexpress.com/e/tGXqRBeY
It was a brand I hadn't heard of but had good reviews and was cheaper than the known brands. So far I'm happy with it, does exactly what it says on the tin.
For the price there's nothing much to complain about, you start adding on all the nice to have extras and suddenly the phone would be half as much again.
Click to expand...
Click to collapse
And you got 24-27w through the USB-C PD port? I guess that must be, since QC3 max is 18 watt right. Grand, thanks for the info!
Not so sure regarding the price, although it's a bit difficult to weight the pros and cons sometimes. Take the Black Shark 2, which is great, aside from the absence of NFC, and no bootloader unlocking, but it's around the same price. Putting a color led in there and HDMI out, that would've made the phone pretty much unbeatable, even if it cost 50 euro or so more. It's definitely making me hesitant to purchase, because what if a 9T Pro equivalent comes out with those two things extra for 50-60 euro more? I would be gutted

skleppo said:
And you got 24-27w through the USB-C PD port? I guess that must be, since QC3 max is 18 watt right.
Click to expand...
Click to collapse
Yes, the QC3 port only delivers 18W max.

I'm resuming this thread because I'm really confused on how get 27w charge on my Mi 9T Pro.
I'm using a UGreen USB-C cable that supports 60W Power Delivery charge with an Aukey 27W power adapter (ADEQ-ES-PA-Y8-B) with PD 3.0. The maximum current I get (verified using Ampere app) is about 3.150mAh which is the same I get using three different Quick Charge 3.0 power adapters, the only difference is when I use the QC3.0 adapters the phone shows "Quick Charge" text on lock screen + double flash symbols on the battery icon and when I use the PD charger I have no text in lock screen but only the double flash symbols on the battery icon.
Does anyone know if the "Turbo charge" is achievable only using the original Xiaomi 27W Charger?

alexmil said:
I'm resuming this thread because I'm really confused on how get 27w charge on my Mi 9T Pro.
I'm using a UGreen USB-C cable that supports 60W Power Delivery charge with an Aukey 27W power adapter (ADEQ-ES-PA-Y8-B) with PD 3.0. The maximum current I get (verified using Ampere app) is about 3.150mAh which is the same I get using three different Quick Charge 3.0 power adapters, the only difference is when I use the QC3.0 adapters the phone shows "Quick Charge" text on lock screen + double flash symbols on the battery icon and when I use the PD charger I have no text in lock screen but only the double flash symbols on the battery icon.
Does anyone know if the "Turbo charge" is achievable only using the original Xiaomi 27W Charger?
Click to expand...
Click to collapse
It's no good looking at only amps. You need to know what voltage is being delivered too.
Watts = volts x amps
I have 2 PD chargers and both charge the phone at the full 27W, when the battery is empty.
I have a 30W PD wall charger which delivers 27W as 12V at 2.25A, but my 30W PD car charger delivers 27W as 9V at 3A

Robbo.5000 said:
It's no good looking at only amps. You need to know what voltage is being delivered too.
Watts = volts x amps
I have 2 PD chargers and both charge the phone at the full 27W, when the battery is empty.
I have a 30W PD wall charger which delivers 27W as 12V at 2.25A, but my 30W PD car charger delivers 27W as 9V at 3A
Click to expand...
Click to collapse
Thanks for your reply. Do you know if there is any chance to read the charging voltage from the phone? Or the only option is use an USB multimeter?

alexmil said:
Thanks for your reply. Do you know if there is any chance to read the charging voltage from the phone? Or the only option is use an USB multimeter?
Click to expand...
Click to collapse
You can get apps which show volts and amps when charging. Search for Ampere in the play store, written by an xda member, I believe.
I'm using Havoc ROM, which shows these on the lock screen when the phone is charging.
However I've seen people say that these may not be accurate and suggest only USB meters give true figures. I've never tried a USB meter, so couldn't say if the figures I see are accurate or not.

Related

Found replacement fast charger (UPDATE 8/10/16)

I took a chance for the fun of it and bought a 15 dollar (at the time of writing this) charger from newegg here and it works perfectly. This post took me about 5 minutes to write and i plugged my Mate 8 in a 43% and now it is at 54%. When it plugs in, it even gives me the Fast Charging notification and says so on the lock screen. Highly recommend it, for USA owners only or you will need a converter plug.
I think you need the original hauwei quick charger to get 9v2.4a "quick charge".
Im using a QC 2.0 which should do 9v2a, but do not get "quick charge" message, and using software, only see up to 1.7ah; however with the original charger; I get 2.6ah.
What I also noticed was the with the original charger its goes up to 2.6ah in bursts (from 1.4 to 2.6ah) and not constant, while the QC 2.0 have constant 1.7ah.
Not sure which is faster. Also some cables don't go above 500mah, and some cables do give "quick charge" message on original charger. Ordered USB voltage tester to test more.
Im also looking for source for cheap oem hauwei charger.
HUAWEI HW-059200CHQ with EU plug: https://www.aliexpress.com/item/100...L-Charger-adapter-for-Huawei/32668184405.html
Huawei charger with option for EU or US plug.
http://www.ebay.com/itm/Genuine-9V-...hash=item2a6b21d483:m:mKEdY4PKIJdpJ0H_NQVZoCQ
As long it covers the signed agreement between Huawei (FCP) and Qualcomm QC2.0 to support both standards it should work with our mate 8. It must be a 9V2A , be careful some of those sold on AliExpress may have only one voltage of 5v1a and that won't do any fast charging.
ronnie72 said:
Huawei charger with option for EU or US plug.
http://www.ebay.com/itm/Genuine-9V-...hash=item2a6b21d483:m:mKEdY4PKIJdpJ0H_NQVZoCQ
Click to expand...
Click to collapse
Just got the EU version of this one in, can confirm it's identical to the one that came with my Mate 8 and does proper quick charging.
Amazon Good Replacement Quick Charger
this is compatible for the US..very fast charging..even more so than the original charger the Mate 8 came with..I went from 40% until 67% in just under 15 minutes
so i just got mate 8. as usually everyone need more than one charger. is it true that even a charger with QC 2.0 will not charge our phone as fast as the original charger?
i dont have budget to buy $30 charger - will check ebay later.
---------- Post added at 11:15 AM ---------- Previous post was at 11:12 AM ----------
keyid said:
I think you need the original hauwei quick charger to get 9v2.4a "quick charge".
Im using a QC 2.0 which should do 9v2a, but do not get "quick charge" message, and using software, only see up to 1.7ah; however with the original charger; I get 2.6ah.
What I also noticed was the with the original charger its goes up to 2.6ah in bursts (from 1.4 to 2.6ah) and not constant, while the QC 2.0 have constant 1.7ah.
Not sure which is faster. Also some cables don't go above 500mah, and some cables do give "quick charge" message on original charger. Ordered USB voltage tester to test more.
Im also looking for source for cheap oem hauwei charger.
Click to expand...
Click to collapse
this is copy pasted from someone else reply regarding my question of why QC 2 charger is slower than original huawei.
*************
They both have the same power QC 9V x 2A =18W or 12V x 1.5V =18W compared to Huawei 9V 2A =18 Watts
However for the Huawei Mate 8, the only charger that will give you 18W worth of charging power is the Huawei SmartPower charger. Anything else charges it at 10W maximum.
And the Huawei SmartPower charger can only charge other devices at 5V 2A = 10W as well. It only switches up to 9V when it sees a Huawei chip inside the other device.
So it's not 12V 1.5A being 0.5A less than 9V 2.0A - Power is Volts multiplied by Amps.
On that particular phone, if you use a Huawei charger you get 18W. If you use ANY non-Huawei charger, you get 10W.
If the battery capacity is 4000mAh at nominal 3.7V, and the charging circuit is 80% efficient then you need to chuck (4 x 3.7 / 0.8) = 18.5 Watts of power into it to charge it. An 18W charger will do that in just over an hour. A 10W charger will take 1.85 Hours which is almost double the time.
****************
Keep in mind that fast charging wears out the battery more than regular charging. If you have time, use a normal charger with lower current.
Bah, what doesnt wear out a lithium battery? Fast charge on, we can all get replacement batteries for this thing. theyre cheap anyway.

Does the Mix ship with a 3.0 fast charger?

This is something i haven't seen mentioned or confirmed in all the reviews i have read. I have read reviews of other xiaomi devices that said it was qc 3.0 enabled, but the charger that ships with the phone is not a quick charger and the user would have to buy their own to take advantage of this feature.
so does anyone know if the charger we receive with the mix is in fact a quick charger as the mi mix is on the devices that is qualcomm quick charge 3.0 enabled.
knives of ice said:
This is something i haven't seen mentioned or confirmed in all the reviews i have read. I have read reviews of other xiaomi devices that said it was qc 3.0 enabled, but the charger that ships with the phone is not a quick charger and the user would have to buy their own to take advantage of this feature.
so does anyone know if the charger we receive with the mix is in fact a quick charger as the mi mix is on the devices that is qualcomm quick charge 3.0 enabled.
Click to expand...
Click to collapse
Check features: http://www.gsmarena.com/xiaomi_mi_mix-8400.php
That site quoted 83% in 30mins, I am not getting that, not even close. I bought the anker USB C quick charge charger which suppose to be quick. I don't feel quick at all...
Anyone also bought charger that can comment on this?
audscott said:
Check features: http://www.gsmarena.com/xiaomi_mi_mix-8400.php
Click to expand...
Click to collapse
yes, as i posted i am well aware the phone is quick charge 3.0 capable. my question though is the charger that ships with the phone a quick charge charger. there are other xiaomi phones that are also quick charge but the user has to provide their own quick charger.
if i were to guess i do not think this charger is a quick charger based on my results compared to my nexus 6.
wu5262 said:
That site quoted 83% in 30mins, I am not getting that, not even close. I bought the anker USB C quick charge charger which suppose to be quick. I don't feel quick at all...
Anyone also bought charger that can comment on this?
Click to expand...
Click to collapse
I got an Aukey QC3 5-Port Charger.
I'm trying to get my device empty right now (tough though as it lasts pretty long) and will test it afterwards.
Gesendet von meinem MIX mit Tapatalk
I compared the included charger with my Anker quick charge 3 charger using the Ampere app.
The given stats were marginally better with the included charger.
I'm not really sure what all the figures mean but they were there or there abouts the same, the Anker charger is Qualcom QC3 certified.
Not nearly getting the quoted charge times though with either charger.
At 53% it claimed 44 mins to 100%
Yes, it ships with a fast charger. It delivers:
5V - 2.5A (12,5W)
9V - 2A (18W)
12V - 1.5A (18W)
So yes, it's a QC2.0 fast charger.
I'm currently at 69% and on the normal charger it's 3 hours+, on the QC2.0 charger I have, it's 1.5 hours and it gave me the same for the included charger. Kind of disappointed that it's only 2.0.
after seeing how insane the battery life is on this phone i just went with the qi wireless charging usb C adapter and I have no plans on going back, works awesome.
knives of ice said:
after seeing how insane the battery life is on this phone i just went with the qi wireless charging usb C adapter and I have no plans on going back, works awesome.
Click to expand...
Click to collapse
Which one? Link?
Thugsin313 said:
Which one? Link?
Click to expand...
Click to collapse
https://www.amazon.com/gp/product/B01M11UT3V/ref=oh_aui_detailpage_o00_s02?ie=UTF8&psc=1
with a case you don't even know it is there.
Thx for the Link:good:
Yes BUT!!!... lol
knives of ice said:
after seeing how insane the battery life is on this phone i just went with the qi wireless charging usb C adapter and I have no plans on going back, works awesome.
Click to expand...
Click to collapse
What I dislike, and you can't use is the Wireless Charging with your phone and case, and a metal plate stuck to the back of the phone. You see, I really like the various magnetic holders in the car (I have one that works with the CD Slot of the vehicle to mount the holder, another that is a little ball mount that sticks to any flat service). They use a thin metal plate to mount to the back of the phone case, and the magnetic is part of the phone mount that is in the vehicle. If you place the phone with the holder and the metal plate on the wireless charger base, it will overheat both the charging base and the phone.
I REALLY like the magnetic phone mount, and do like wireless charging but it a moot point if you have a mounting plate on the back of your phone or case.
I am using amperage and I own two qualcom version 2.0 chargers one from my Nexus 6, and one I bought on amazon. The OEM Nexus 6 draws about 1.6amps on charge, and the Anker 2.0 draws under 300 mAH. The computer 3.0 USB port from a desktop draws 370mAH to charge the phone.
I will probably invest in a true oem qualcom 3.0 charger.
Pretty cheap of Shomi to not include a 3.0 charger
LormaD said:
What I dislike, and you can't use is the Wireless Charging with your phone and case, and a metal plate stuck to the back of the phone. You see, I really like the various magnetic holders in the car (I have one that works with the CD Slot of the vehicle to mount the holder, another that is a little ball mount that sticks to any flat service). They use a thin metal plate to mount to the back of the phone case, and the magnetic is part of the phone mount that is in the vehicle. If you place the phone with the holder and the metal plate on the wireless charger base, it will overheat both the charging base and the phone.
I REALLY like the magnetic phone mount, and do like wireless charging but it a moot point if you have a mounting plate on the back of your phone or case.
I am using amperage and I own two qualcom version 2.0 chargers one from my Nexus 6, and one I bought on amazon. The OEM Nexus 6 draws about 1.6amps on charge, and the Anker 2.0 draws under 300 mAH. The computer 3.0 USB port from a desktop draws 370mAH to charge the phone.
I will probably invest in a true oem qualcom 3.0 charger.
Pretty cheap of Shomi to not include a 3.0 charger
Click to expand...
Click to collapse
get a Pioneer Appradio that mirrors your phones screen and problem solved. now that i'm so used to it i can't imagine my phone's screen not being the screen of the head unit in my car everything is right there makes it so much easier
LormaD said:
I am using amperage and I own two qualcom version 2.0 chargers one from my Nexus 6, and one I bought on amazon. The OEM Nexus 6 draws about 1.6amps on charge, and the Anker 2.0 draws under 300 mAH. The computer 3.0 USB port from a desktop draws 370mAH to charge the phone.
I will probably invest in a true oem qualcom 3.0 charger.
Pretty cheap of Shomi to not include a 3.0 charger
Click to expand...
Click to collapse
I'm revising my previous post, it seems that the provided charger may indeed be a QC 3.0.
I've been reading that if you use USB-c to USB-c cable instead of the provided USB-a to USB-c cable, you actually get charge rate.
I've also been reading up on the QC 3.0 vs 2.0. Both will max out at 18watts. But 3.0 has a variable voltage whereas 2.0 is fixed at 5V, 9V and 12V. You can see that in the below link, there's a nice table of Watts for each QC.
http://www.androidauthority.com/quick-charge-3-0-explained-643053/
However with USB-C to USB-C, it can charge at full 29Watts. That's a huge difference.
you can see that in the description provided by Anker here
https://www.amazon.com/Anker-Type-C-Delivery-Charger-PowerPort/dp/B01D8C6ULO
You can also see here in this device
https://www.amazon.com/Lumsing-Charge-Charger-Foldable-Macbook/dp/B01I1OIO4A
it says 48W of power, and allocates 19W for QC 3.0 which means the other Type-C port is allocated for 29Watts.
So I think I'm going to be looking for something with a direct USB-C port as a charger.
Certainly, this may be all for not if the Xiaomi Mi Mix is limited to 18W of input anyways.
I have the Anker USB-C to USB-C charger, my initial testing indicate that the original charger (China Plug) and my Samsung Galaxy S6 Edge charger (UK Plug) are capable of doing 23.8 Watts max, i tried to monitor the difference and what I noticed is the Mi Mix original charger seems to be adjusting the charging power more often (not really sure why and whether it's good). My Anker USB-C to USB-C went up to 28.9 Watts Max. All chargers seems to scale down their charging rate after battery reach 80%+ so I think the best way to test is to empty the better and start from 0%. I doubt I will be doing that test though as it's quite hard to empty battery on Mix and I am pretty happy with my Anker charger so don't think I will be using Stock one or my Samsung one.
Unless I go on holiday with multiple devices that still use old USB port, Anker USB-C to USB-C is my go to charger.
So I think what you confirmed was that the mix can take power at 29 watts.
That's good to know.
Just received this wireless charging receiver today that claims to do fast charge
https://www.amazon.com/gp/product/B01LX0Y5CS/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1
it does charge much faster, almost double of the one i posted originally in this thread. i'm getting a charge on it around 950ma which isn't too bad for wireless i don't think.
Is there an app I can use to see if this phone is quick charging ? I have a Google pixel charger USB c to USB c. Trying that out now .I can't really judge because this phone is at least 1000 mAh bigger than what I'm used to lol.
LaNsLyDe said:
Is there an app I can use to see if this phone is quick charging ? I have a Google pixel charger USB c to USB c. Trying that out now .I can't really judge because this phone is at least 1000 mAh bigger than what I'm used to lol.
Click to expand...
Click to collapse
That's what I'm using too! I was at 24% battery, went to sleep for 4 hours with it charging, and I'm only at 74%. There has to be a way to know when we quick charge lol

21w charging

This phone supports 21w charging, but it is only shipped with an 18W charger. (This charger seem to be able to give out 5V, 9 V (2A) and 12V (1.5A).)
Anyone have information on what version of USB-PD the phone supports? And what voltage is used to obtain 21w?
Has anyone got 21W charging working? As not all higher wattage usb-pd charges may support the 21W mode that this phone needs.
Well I can tell you do not use anything above Sony's recommended charging °W because anything above that - even with PD -- the device will intensely heat up.
JB2unique said:
Well I can tell you do not use anything above Sony's recommended charging °W because anything above that - even with PD -- the device will intensely heat up.
Click to expand...
Click to collapse
Sony report 21W charging. So I'm not asking to go above Whats recommended.
I am asking more about the actual charging methodology, as the usb-pd system can be a bit complicated. And even a 45W charger may not correctly 'handshake' at 21w unless it's got the right voltage to offer.
Anyone?
No one has tried using a higher wattage PD charger?
shock-UK said:
Anyone?
No one has tried using a higher wattage PD charger?
Click to expand...
Click to collapse
My Xiaomi 30W 1A1C charger (which supports USB PD 2.0 over the C port I believe) negotiates 7V/3A to hit the 21W.
JB2unique said:
Well I can tell you do not use anything above Sony's recommended charging °W because anything above that - even with PD -- the device will intensely heat up.
Click to expand...
Click to collapse
Winrahr said:
My Xiaomi 30W 1A1C charger (which supports USB PD 2.0 over the C port I believe) negotiates 7V/3A to hit the 21W.
Click to expand...
Click to collapse
Nice. That is an interesting combination. I thought it might do it at higher voltage.
How are you measuring it? I'm thinking of getting a usb measuring display.
shock-UK said:
Nice. That is an interesting combination. I thought it might do it at higher voltage.
How are you measuring it? I'm thinking of getting a usb measuring display.
Click to expand...
Click to collapse
Me too, I thought it'd be doing 12V/1.8A or something but 7V/3A makes sense. Definitely should make sure the cable is quality enough to support 3A. As an aside, the phone charges at 5V/1.5A for all non USB-PD compliant chargers.
I measured with a super cheap USB C meter that I've been sticking into random chargers for curiosity sake. Highly recommended :laugh:
Ok, ordered an Usb pd 3.0 charger today, the Arcanite one. As it also has a PPS option.
Also ordered as usb c power meter.
Let's see if it does the same voltage combination with this charger.
I just looked more into the USB-PD spec and I believe you'd need a PD3.0 compatible charger to hit the 21W since the charger needs to support PPS to hit 7V/3A. Otherwise I'm assuming it would negotiate to 5V/3A or 9V/2A if the charger doesn't have a 7V step.
So got a charger with PPS support (a USB-PD 3.0) an up to 30w charging. An Anker USB c to c cable with 60W support.
And using a satechi voltage / current measuring device.
But something isn't correct. It could be the usb-c voltage measure.
Using the supplied 18W charger, it's displaying 5.27V, 2.78A. that's roughly 15W. ( Picture attached).
Using the new 30W charger, it's displaying 6.44V, 2.77A. that's roughly 18W. ( Picture attached).
Still need to do more testing, not sure why I'm getting these readings. A bit below what I was expecting.
shock-UK said:
So got a charger with PPS support (a USB-PD 3.0) an up to 30w charging. An Anker USB c to c cable with 60W support.
And using a satechi voltage / current measuring device.
But something isn't correct. It could be the usb-c voltage measure.
Using the supplied 18W charger, it's displaying 5.27V, 2.78A. that's roughly 15W. ( Picture attached).
Using the new 30W charger, it's displaying 6.44V, 2.77A. that's roughly 18W. ( Picture attached).
Still need to do more testing, not sure why I'm getting these readings. A bit below what I was expecting.
Click to expand...
Click to collapse
What battery % is your phone at? You also have to remember that the closer the phone is to 100%, the charging speed will slow down.
I have an Anker 30W charger and can charge at speeds of at least 3500 mAh (based on Ampere reading).
The battery was around 35%. Yes you are right once it got over 50% the charging rate does show down a bit.
Also the Ampere app was displaying 3600 or 3500 as the current. But even if we calculate that, that's only about 18W. But that app isn't very good at measuring charging voltage or current.
The charger's specifications are attached below,
Actually, did anybody find a 21W charger compliant with our device??? (I mean really delivering 21W...)
Edit:
I've ordered the Samsung Ultra Fast Charge 25W (ref: EP-TA800XBEGWW)
It is PD 3.0 PPS and delivers 3.3-5.9V at 3A or 3.3-11.0V at 2.25A.
I hope that will work...
nreuge said:
Actually, did anybody find a 21W charger compliant with our device??? (I mean really delivering 21W...)
Edit:
I've ordered the Samsung Ultra Fast Charge 25W (ref: EP-TA800XBEGWW)
It is PD 3.0 PPS and delivers 3.3-5.9V at 3A or 3.3-11.0V at 2.25A.
I hope that will work...
Click to expand...
Click to collapse
I have the Samsung EP-TA800 25W charger from a Samsung Galaxy A71 5G. On low battery with my USB tester, I measured 22W (9V/2.5A) when charging my A71 but only 15W (5.5V/2.7A) when charging my Xperia 1 ii. Were you able to do better with this Samsung charger?
In fact, I have been testing all my PD chargers (about a dozen in total -- I might have a problem!), and none has been able to charge my Xperia 1 ii at more than 18W. That's certainly decent, but it would be nice to get the 21W that the hardware is capable of.
mikew99 said:
I have the Samsung EP-TA800 25W charger from a Samsung Galaxy A71 5G. On low battery with my USB tester, I measured 22W (9V/2.5A) when charging my A71 but only 15W (5.5V/2.7A) when charging my Xperia 1 ii. Were you able to do better with this Samsung charger?
In fact, I have been testing all my PD chargers (about a dozen in total -- I might have a problem!), and none has been able to charge my Xperia 1 ii at more than 18W. That's certainly decent, but it would be nice to get the 21W that the hardware is capable of.
Click to expand...
Click to collapse
I've not finished my tests, answers soon...
mikew99 said:
I have the Samsung EP-TA800 25W charger from a Samsung Galaxy A71 5G. On low battery with my USB tester, I measured 22W (9V/2.5A) when charging my A71 but only 15W (5.5V/2.7A) when charging my Xperia 1 ii. Were you able to do better with this Samsung charger?
In fact, I have been testing all my PD chargers (about a dozen in total -- I might have a problem!), and none has been able to charge my Xperia 1 ii at more than 18W. That's certainly decent, but it would be nice to get the 21W that the hardware is capable of.
Click to expand...
Click to collapse
nreuge said:
I've not finished my tests, answers soon...
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I've finished my tests.
Both Sony charger 18W and Samsung EP-TA800 25W charger take 37 mn to charge from 20% to 70%. So, the extra power of the EP-TA800 cannot be used by our device, it does not provide the correct electrical intensity...
Finally, I've ordered the ARCANITE Premium PD 3.0 QC4 PPS 30W charger as mentionned above.
I've received the ARCANITE Premium PD 3.0 QC4 PPS 30W charger and I've done the tests.
To charge from 20% to 70%, the Sony charge takes 37 mn and the ARCANITE charger takes 36 mn (tests done in aiplane mode).
The small difference occurs below 50%.
nreuge said:
I've received the ARCANITE Premium PD 3.0 QC4 PPS 30W charger and I've done the tests.
To charge from 20% to 70%, the Sony charge takes 37 mn and the ARCANITE charger takes 36 mn (tests done in aiplane mode).
The small difference occurs below 50%.
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Thanks for the update. It seems like the ARCANITE might not be delivering the 21W as hoped.
I also ordered yet another charger, the Baseus BS-C915, which allegedly supports PPS. The PPS designation appears in some pictures, but the specifications describe only a range of voltages (3.3-11V @ 3A).
With the Baseus, I get just under 18W (6.6V @ 2.7A) when charging my Xperia 1 ii. It's kind of strange that Sony claims 21W charging but doesn't include a 21W charger and doesn't even provide the specs for one!

33W Charger

Are there any other devices with the same power output? I have various Oneplus chargers, and a couple of Quick charge 3.0, but would like a spare fast charger.
MarkRobert said:
Are there any other devices with the same power output? I have various Oneplus chargers, and a couple of Quick charge 3.0, but would like a spare fast charger.
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You can buy the xiaomi 27W QC4 charger it does 27-35W
realme x2 pro has 50W, so something there shud fit
I've tried various chargers but the SOC was >85% so it wasn't a proper test. With most charger (QC or PD) I've gotten 15W, including with my 65W PD laptop charger. With the original charger I got 20-22W. If it's important to check the power, I can wait until it's discharged and redo the tests, which I plan to do anyway.
For travelling, I find it a lot more useful to have the 36W (18W QC + 18W PD?) cheap Amazon charger with 2xUSB-A and 1xUSB-C, which has the same size as the original charger: https://smile.amazon.de/gp/product/B07WFDTJFR/
Let us know how you get on. I tried my Samsung 25w charger, Pixel 3 charger and the Motorola 18w charger. All of them charge at 12-18w only. Stock charger goes to around 27w
I've now tried all the chargers and powerbanks that I have, QC3 or PD. All of them cap out at 16W, even though they can deliver more. I got the original one to charge with 30W (at 60% SOC).
The original charger is marked QC3 but they are probably not following the standard.
From my understanding the Snapdragon 732g has Quick Charge 4+ support doesn't it ?
manu1991 said:
Let us know how you get on. I tried my Samsung 25w charger, Pixel 3 charger and the Motorola 18w charger. All of them charge at 12-18w only. Stock charger goes to around 27w
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Yes, i've noticed the same. Around 27w max. Today i was charging my phone and observing the batt temperature. Kinda obvious, but the hotter the battery gets, the lower charging power it will deliver. Here in Brazil the temp this week is being around 36-42°C, so i put the phone over a bar of artificial ice. As the batt temp went under 35°C, the resultant "charging current" went to around 5500-6000mA. Doing the math, it was possible to arrive at the 27w result. (~4,5V x 6 = 27w).
When the batt temp was near 38~39°C, charging was down to 2000-2800mA (resulting to around 10-12w).
I also found something strange, it wasn't able to show the charging percentage with 2 decimals, as shown in this video:
https://www.youtube.com/watch?v=2Y8ja08uGEQ
Can someone give me a link for a u.s. charger for poco x3 device??
danieliswhattheycallme said:
Can someone give me a link for a u.s. charger for poco x3 device??
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maybe this?
https://it.aliexpress.com/item/1005001516773316.html?spm=a2g0o.productlist.0.0.221f1870n5uSWW&algo_pvid=e82d72d7-5dac-413a-8e05-1657b2124e88&algo_expid=e82d72d7-5dac-413a-8e05-1657b2124e88-15&btsid=0b0a187916118446027031496e9a4e&ws_ab_test=searchweb0_0,searchweb201602_,searchweb201603_
For me GAN 65W chargers (Baseus) are good and universal quick chargers.
I have made a quick test in the thread Chargers and Charging speed

Question Can we charge S21U with 40W chargers?

Hi to all,
Can we charge S21U with 40W chargers? They are a lot chargers like Huawei, Xiaomi and etc... with 40W and more.
I believe the answer is yes - or at least probably. Most of those newer chargers are "Smart" in that they only provide the volts and amps that are needed by the device being charged. I may be wrong about that, but I don't think so - I don't think you have anything to worry about.
isko01 said:
Hi to all,
Can we charge S21U with 40W chargers? They are a lot chargers like Huawei, Xiaomi and etc... with 40W and more.
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Pretty sure you can, I use a 45 watt "smart" charger on my NOTE 20 Ultra without any issue.
You can use any charger that supports PD (power delivery), AFC or QC2.0
Any 45 watt USBC charger out there is going to be PD standard so you'll be fine.
The downside is, it'll still only charge at 25 watts.
I am charging my s21U with an 40w charger, works without problem. not using 40 watts of course, but its working.
The phone, all phones in fact, will ONLY charge at it's highest speed the phone allows itself to receive, the charger doesn't matter, it can be lower or higher than what the device is recommended for. A lower power charger will just take longer to charge the phone, a higher power charger will just not charge at it's full power if the phone won't accept the full power from the charger.
I've been using the 90w charger from my HP Spectre X360 my S20 Ultra since I got it without a single issue, I still get about 2 days of use per charge on that thing, and now I've been using the same laptop charger on the S21 Ultra and it works just fine.
The phone fast charges normally, doesn't get super hot, works just fine, and I only need to keep laptop chargers around the house, it's great haha
I have a 45W USB-C PD port as part of an Anker PowerPort and also the 18W charger that came with my Pixel 5. Would I notice much of an improvement in charging speed or integrity/longevity of the battery by purchasing Samsung's 25W charger?
Tmel14 said:
Would I notice much of an improvement in charging speed or integrity/longevity of the battery by purchasing Samsung's 25W charger?
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Click to collapse
That's the charger I've been using w/ S21Ultra (25W from N10+) and I figured out I won't be needing anything bigger then that. Thanks to Samsung 'super fast charging' the 5Ah battery on s21U charges faster then 3.8mA Pixel 4a5G battery(with the same charger). +/- 1 hour and done!

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