Question 100w same as 25w? - Samsung Galaxy Tab S8

hi with my ultra i got a free 25w samsung charger
i bought a 100w ugreen charger :
ingle-PortUSB-C1/C2:5V/3A 9V/3A 12V/3A 15V/3A 20V/5A 100W Max
USB-C3: 5V/3A 9V/2.5A 12V/1.88A 22.5W Max
USB-A: 4.5V/5A 5V/4.5A 5V/3A 9V/2A 12V/1.5A 22.5W Max
with a cable 100 PD
when connecting my tablet says same time to charge 100%
and ampere app shows this photos
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do you know what is happening here?

I don't have any information to illuminate what's going on, but this sounds familiar enough that I think at least one or two other users in this section have reported something similar. Me, I try not to quick/fast charge any more than I have to, and I keep my battery between 25 and 75%, so I don't pay that close attention.

I haven't used Ampere. I assume the top is the charging current? The one on the left shows a higher current, 5.58 amps, vs 4.40 amps. Higher current for a given voltage means more power is being transferred, thus a higher charge rate...but even 5 amps is pretty high. That's why fast charging schemes use higher voltages, because a given conductor can usually handle a higher voltage better than it can handle a higher current.
[email protected]=15W
[email protected]=21W
[email protected]=36W
[email protected]=45W
[email protected]=100W
The Galaxy S8 is advertised to be able to charge at a 45 watt rate, max, so if this is true, a 100w charger wouldn't charge any faster as both devices would negotiate a max of 45 watts. This is assuming both the device and the charger limit the charge current; I imagine many devices will draw more power than they're rated, and many chargers will try to supply it, although the load might pull the voltage down.

V0latyle said:
I haven't used Ampere. I assume the top is the charging current? The one on the left shows a higher current, 5.58 amps, vs 4.40 amps. Higher current for a given voltage means more power is being transferred, thus a higher charge rate...but even 5 amps is pretty high. That's why fast charging schemes use higher voltages, because a given conductor can usually handle a higher voltage better than it can handle a higher current.
[email protected]=15W
[email protected]=21W
[email protected]=36W
[email protected]=45W
[email protected]=100W
The Galaxy S8 is advertised to be able to charge at a 45 watt rate, max, so if this is true, a 100w charger wouldn't charge any faster as both devices would negotiate a max of 45 watts. This is assuming both the device and the charger limit the charge current; I imagine many devices will draw more power than they're rated, and many chargers will try to supply it, although the load might pull the voltage down.
Click to expand...
Click to collapse
one photo is from a 100w charger the higher value one
the other photo is from the 25w samsung charger that came with my ultra
so i dont know why the tablet is showing the same time to full charge

roirraW edor ehT said:
I don't have any information to illuminate what's going on, but this sounds familiar enough that I think at least one or two other users in this section have reported something similar. Me, I try not to quick/fast charge any more than I have to, and I keep my battery between 25 and 75%, so I don't pay that close attention.
Click to expand...
Click to collapse
Do you have the text super fast charging 2.0 when charging your tablet?
I don't

waltdisneypixar said:
one photo is from a 100w charger the higher value one
the other photo is from the 25w samsung charger that came with my ultra
so i dont know why the tablet is showing the same time to full charge
Click to expand...
Click to collapse
Probably because your tablet can't charge at a rate any higher than 45W - 15v @ 3 amps.

V0latyle said:
Probably because your tablet can't charge at a rate any higher than 45W - 15v @ 3 amps.
Click to expand...
Click to collapse
That is correct it can only take 45w so 100w won't work. It will only limit the 100w charger down to 45w

waltdisneypixar said:
hi with my ultra i got a free 25w samsung charger
i bought a 100w ugreen charger :
ingle-PortUSB-C1/C2:5V/3A 9V/3A 12V/3A 15V/3A 20V/5A 100W Max
USB-C3: 5V/3A 9V/2.5A 12V/1.88A 22.5W Max
USB-A: 4.5V/5A 5V/4.5A 5V/3A 9V/2A 12V/1.5A 22.5W Max
with a cable 100 PD
when connecting my tablet says same time to charge 100%
and ampere app shows this photos View attachment 5659897View attachment 5659899
do you know what is happening here?
Click to expand...
Click to collapse
You shouldn't look up what a USB port can take. It also depends on what main board and battery can take. In this case s8 ultra is limited to max 45w. So your 100w charger won't go 100w on this tablet because it does not support it.

the charge circuits are limited to a max input wattage and voltage. to protect the device from being burnt out. it is not like the good old days where you could pump as many watts and volts you wanted into a device hoping that you didn't burn it up, blow the fuse or a diode. now everything is limited to a max input. a lot of it has to do with the brand x / universal chargers being sold. that claim they charger faster when really they don't.

The question is not about 100w
it is about 100w doing 45w vs 25w charger and same time charging

waltdisneypixar said:
The question is not about 100w
it is about 100w doing 45w vs 25w charger and same time charging
Click to expand...
Click to collapse
I don't know. They're both charging at about 5 amps which is honestly pretty high. Nothing indicates the actual charging rate in watts because it doesn't display the charger voltage. I will say I'm rather skeptical of strange off brand Chinese tech so it's possible you'd get better results with a different charger.

Question is neither is showing super fast charging 2.0

Fast charging is on in settings. It shows super fast charging but not 2.0

I got the same issue with my s22 ultra...The charger must have the right specs and the cable must be 5a. If not, you won't get super fast charging 2.0. This will only give 25w fast charging. I have a 65w ugreen charger that has all the right specs...It has 65w max on 1 port and when other devices are connected on the other ports it distributes the 65w over the ports. I used the cable that came with the tabs s8 ultra and got the same as you, not charging to it's full potential. Bought a ugreen 5a cable and now it shows super fast charging 2.0 on my tab s8 ultra and s22 ultra. The charger and the usb cable must be 100 % correct, otherwise you won't get max charging speeds.

termdj said:
I got the same issue with my s22 ultra...The charger must have the right specs and the cable must be 5a. If not, you won't get super fast charging 2.0. This will only give 25w fast charging. I have a 65w ugreen charger that has all the right specs...It has 65w max on 1 port and when other devices are connected on the other ports it distributes the 65w over the ports. I used the cable that came with the tabs s8 ultra and got the same as you, not charging to it's full potential. Bought a ugreen 5a cable and now it shows super fast charging 2.0 on my tab s8 ultra and s22 ultra. The charger and the usb cable must be 100 % correct, otherwise you won't get max charging speeds.
Click to expand...
Click to collapse
i have the ugreen 100w charger with the 2m pd100 5A cable ( it says 5A in the end of the cable ) that came as a pack in ali but not seeing super fast charging 2.0.

Mine was exactly the same. Bought a different ugreen cable and the 2nd cable worked. Dont know why it worked. Looks the same as the one that came with the charger, just a longer cable

waltdisneypixar said:
i have the ugreen 100w charger with the 2m pd100 5A cable ( it says 5A in the end of the cable ) that came as a pack in ali but not seeing super fast charging 2.0.
Click to expand...
Click to collapse
The cable makes absolutely no difference in the actual charge rate. Being rated for higher current just means the conductors are larger.
When you connect the device to the charger, the two negotiate a mutual rate.

termdj said:
Mine was exactly the same. Bought a different ugreen cable and the 2nd cable worked. Dont know why it worked. Looks the same as the one that came with the charger, just a longer cable
Click to expand...
Click to collapse
I just bought a baseus 100pd with digital monitor that tells the W. Let you know when i try

It is the cables! Cables! Cables! Cables! -- It's a dirty word!
Please see
Superfast charging + emark cables -- are they needed?
So I have a 45W charger, thinking about purchasing a 65W charger. I know The Tab S8 Plus only goes to 45W. My question: are there any advantages to using an emark enabled cable? I'm getting super fast charge notice with a 60W cable, no emark...
forum.xda-developers.com
If you have a normal 5A cable, all PD charges are throttled to 25W (or less). Your tablet (at best) will show "Super fast Charge" and you will see something like 5A @ 4.12V when running Ampere. This is the power going into the battery -- the PD Charger is probably delivering something like 4A @ 5V. Around 20W going into the battery. I assume the "missing" 5W is powering the tablet - i.e. Ampere only shows what is going into the battery.
To get more than 25W, you need special "e-mark" chipped cables. These allow current higher than 5A to be delivered. They will be generally be rated by power -- 100W -- not current. I use
https://www.amazon.com/dp/B09G5XQG3T
This will allow the PD charger to run higher than 25W and you will see "Super Fast Charging 2.0" for charge status.
When I use the 100W cable, the tablet charges iin "Super Fast Charging 2.0" mode, and Ampere tells me the battery is receiving 7A @ 4.12V, or ~ 30W. Because I'm using the tablet at the same time I again assume some additional power is going to powering the tablet -- but that Ampere is only showing what is going into the battery. So maybe this bumps it up to 35W total. I have 45W and 65W power delivery bricks, so I assume the ~ 35W-ish delivery is being controlled by the tablet.
Note: The cable "in the box" with my Tab S8+ was NOT chipped, and was limited to 25W.
take care,
Joe

drjoe1 said:
It is the cables! Cables! Cables! Cables! -- It's a dirty word!
Please see
Superfast charging + emark cables -- are they needed?
So I have a 45W charger, thinking about purchasing a 65W charger. I know The Tab S8 Plus only goes to 45W. My question: are there any advantages to using an emark enabled cable? I'm getting super fast charge notice with a 60W cable, no emark...
forum.xda-developers.com
If you have a normal 5A cable, all PD charges are throttled to 25W (or less). Your tablet (at best) will show "Super fast Charge" and you will see something like 5A @ 4.12V when running Ampere. This is the power going into the battery -- the PD Charger is probably delivering something like 4A @ 5V. Around 20W going into the battery. I assume the "missing" 5W is powering the tablet - i.e. Ampere only shows what is going into the battery.
To get more than 25W, you need special "e-mark" chipped cables. These allow current higher than 5A to be delivered. They will be generally be rated by power -- 100W -- not current. I use
https://www.amazon.com/dp/B09G5XQG3T
This will allow the PD charger to run higher than 25W and you will see "Super Fast Charging 2.0" for charge status.
When I use the 100W cable, the tablet charges iin "Super Fast Charging 2.0" mode, and Ampere tells me the battery is receiving 7A @ 4.12V, or ~ 30W. Because I'm using the tablet at the same time I again assume some additional power is going to powering the tablet -- but that Ampere is only showing what is going into the battery. So maybe this bumps it up to 35W total. I have 45W and 65W power delivery bricks, so I assume the ~ 35W-ish delivery is being controlled by the tablet.
Note: The cable "in the box" with my Tab S8+ was NOT chipped, and was limited to 25W.
take care,
Joe
Click to expand...
Click to collapse

Related

charging rapidly with aukey quickcharge 2.0 wall charger and type c adapter

so this combo is working for me:
http://www.amazon.com/gp/product/B010UT6Z3Q?psc=1&redirect=true&ref_=oh_aui_detailpage_o08_s01
http://www.amazon.com/gp/product/B00W98IQ5M?psc=1&redirect=true&ref_=oh_aui_detailpage_o08_s00
the latter also allowed me to fastboot oem unlock.
so battery is at 59%, homescreen says 14 minutes till full.
cheers
can you please check with Ampere or GSAM for the charging speeds that you achieve?
does the device say fast/rapid charging?
Interested to hear the results from Ampere or GSAM as well
i cant get a good handle on how ampere works. it keeps measuring, takes forever, and fluctuates a lot.
with the aukey combo, i got 1830/2050mA @ 4.14v, at 53%, 37.7c
took it off charge for a while and tried again with the stock charger:
with the stock charger, i got 1850/1860mA(min/max) @ 4.159Vat 61%, 30.7c
I will try again at 50% today if I have time but I am pretty pleased with my little aukey combo. It was cheap.. I got it when there was a 7 dollar coupon floating around.
FYI, believe this is the same charger : http://www.amazon.com/gp/product/B00QEX83LA/
Use Promo Code DBVITSZB to drop price to $6.99
Can only purchase 1 at the discounted price.
TCstr8 said:
FYI, believe this is the same charger : http://www.amazon.com/gp/product/B00QEX83LA/
Use Promo Code DBVITSZB to drop price to $6.99
Can only purchase 1 at the discounted price.
Click to expand...
Click to collapse
Yep that would be the one. charging at 1800mA is not the fastest that the phone can charge at though. I'm going to hold off for the ones that enable the full speed of charging
http://www.droid-life.com/2015/10/19/nexus-6p-nexus-5x-quick-charge/
For 7 bux I think it's still a good deal for someone who doesnt have a spare to use
From the product description, you are only going to get 2A out of the charger. 5X doesn't do QC2.0, so you will only get the output at 5V, which for this charger is 2 amps.
Specifications:
Input: AC 100-240V
Output: 5V/2A, 9V/2A, 12V/1.5A
Dimensions2.69*2.05*0.87in)(68.5*52*22mm)
zackhow said:
From the product description, you are only going to get 2A out of the charger. 5X doesn't do QC2.0, so you will only get the output at 5V, which for this charger is 2 amps.
Specifications:
Input: AC 100-240V
Output: 5V/2A, 9V/2A, 12V/1.5A
Dimensions2.69*2.05*0.87in)(68.5*52*22mm)
Click to expand...
Click to collapse
But some Aukey chargers with AIPowertech like this one "charges all non-Quick ChargeTM 2.0 phones and tablets at their normal speed (up to 5 volts / 2.4A Max)with AIPower Tech Technology."
I've got the charger, just not the cables... so haven't been able to test.
I tested Aukey PA-T2 wall charger QC2.0 port ( orange one) on a Sony Xperia Z3 compact tablet
I recorded charging current up to 2.7Amp with the Aukey USB cable and up to 3.0 Amp with the Sony USB cable !!!! far more than the 2.0 Amp level current Aukey specifies......
The voltage - current output test show that the voltage stay in the 9.0V range with current up to 2.4Amp then fall down very quickly. It seems that the voltage stay at a value enough to deliver up to 3.0 Amp charging current to the tablet ....
Detailed test are here (http://78michel.unblog.fr/?p=860 in french....)
Current values where obtained from BMW recordings
Using the
Aukey Quick Charge 2.0 18W USB Turbo Wall Charger
And
http://www.amazon.com/dp/B01706YAXY
Getting Charging Rapidly. The juice isn't nearly as good as the stock charger, but this is the first combo with a USB-A to USB-C cable that I've gotten the Charging Rapidly notification.
7_michel said:
I tested Aukey PA-T2 wall charger QC2.0 port ( orange one) on a Sony Xperia Z3 compact tablet
I recorded charging current up to 2.7Amp with the Aukey USB cable and up to 3.0 Amp with the Sony USB cable !!!! far more than the 2.0 Amp level current Aukey specifies......
The voltage - current output test show that the voltage stay in the 9.0V range with current up to 2.4Amp then fall down very quickly. It seems that the voltage stay at a value enough to deliver up to 3.0 Amp charging current to the tablet ....
Detailed test are here (http://78michel.unblog.fr/?p=860 in french....)
Current values where obtained from BMW recordings
Click to expand...
Click to collapse
LOL, thanks... but that doesn't really help this 5X cause. Given that there is no quick charge on the 5X, it'll remain at 5V. The question is whether it'll pull more than the 2A or 2.4A specified on these chargers at 5V on a 5X.
PatcheZ said:
LOL, thanks... but that doesn't really help this 5X cause. Given that there is no quick charge on the 5X, it'll remain at 5V. The question is whether it'll pull more than the 2A or 2.4A specified on these chargers at 5V on a 5X.
Click to expand...
Click to collapse
Aukey quick charge 2.0 behave like a standard charger when connected to a non QC2.0 compatible device. The output voltage will stay to 5V so the current level will be very sensitive to the quality of the USB cable and limited by the maximum current the device will afford.
In practice it is very difficult to reach 2A charging level ( even if the charger is able to deliver such current) with a voltage output of only 5V , due to losses in cables and connectors
From my experience the higher current charging level I obtained was with a Samsung wall charger refence EP-TA10EWE which deliver an output voltage of up to 5.5V at 1.9A ( nominal voltage is claimed at 5.3V)
I got 1.7Amp charging current on my Nexus 5 while with the Aukey QC2.0 the current was only 1.1 Amp in exactly same conditions ( these recorded data are also reported in my blog .....in French.....)
7_michel said:
Aukey quick charge 2.0 behave like a standard charger when connected to a non QC2.0 compatible device. The output voltage will stay to 5V so the current level will be very sensitive to the quality of the USB cable and limited by the maximum current the device will afford.
In practice it is very difficult to reach 2A charging level ( even if the charger is able to deliver such current) with a voltage output of only 5V , due to losses in cables and connectors
From my experience the higher current charging level I obtained was with a Samsung wall charger refence EP-TA10EWE which deliver an output voltage of up to 5.5V at 1.9A ( nominal voltage is claimed at 5.3V)
I got 1.7Amp charging current on my Nexus 5 while with the Aukey QC2.0 the current was only 1.1 Amp in exactly same conditions ( these recorded data are also reported in my blog .....in French.....)
Click to expand...
Click to collapse
Thanks, didn't think to look at the link.
I wonder how older phones like the NA Galaxy S3 and Nexus 4 that both have QC1.0 ([email protected]) compare to the charging of the Nexus 5.
I'm curious as to how you did your testing, as I'm going to try my own testing once my cables come in. Did you drain all your phone's battery to 0 before performing each test? Phone airplane mode vs off? I also think that all tests must be done in relation to time, especially since the charging profile changes as the phone charges. I'm also curious as to how the non QC port on the Aukey performs, since it's spec'd at 2.4A @ 5V.
PatcheZ said:
Thanks, didn't think to look at the link.
I wonder how older phones like the NA Galaxy S3 and Nexus 4 that both have QC1.0 ([email protected]) compare to the charging of the Nexus 5.
I'm curious as to how you did your testing, as I'm going to try my own testing once my cables come in. Did you drain all your phone's battery to 0 before performing each test? Phone airplane mode vs off? I also think that all tests must be done in relation to time, especially since the charging profile changes as the phone charges. I'm also curious as to how the non QC port on the Aukey performs, since it's spec'd at 2.4A @ 5V.
Click to expand...
Click to collapse
All tests are made with battery drained to zero before starting , and a complete charge is done in each conditions. That way I can check that the full charging time is logically related to the recorded current values. The current is recorded during the complete cycle at a frequency of one value per mn.
The air plane mode was off.
Aukey QC port and non QC port are slighly differents when connected to non QC2.0 devices :
QC port delivers 5.1V in open circuit, the voltage encrease to 5.2V at 2.2Amp, on the contrary the non QC port delivers 5.2V in open circuit and decrease to 5.1V at 2.2Amp. I did not test them at higher current level.
I did not tested Galxy S3 or Nexus4 , but I beleive that a charger like the Samsung EP-TA10EWE will deliver them the maximum charging current they are programmed to accept, as obeserved for the Nexus 5.
I got the same charging current curve I recorded with Nexus 5 and Samsung EP-TA10EWE, with other set of charger and cable. This means that this charging curve is defined by the Nexus 5 inner program , not the charger characteristics. The problem is that we never know which is the max current curve internally programmed for each smartphone...... so it could be a long way to find it.......

Quick Charger 4.0 wall charger

Hi guys, anyone here are using QC 4.0? If yes, can you tell me where to buy one good?
I'm looking for QC 4.0 in chinese sites, but it's hard find there,
You could try the official Razer phone charger. That has QC 4
twistedh said:
You could try the official Razer phone charger. That has QC 4
Click to expand...
Click to collapse
But you know if the QC 4.0 is working on Mi 8?
I saw the Razer Charger, but found in on site only, like 40 eu.
I can't find any good review with QC 4.0, they are all QC3.0 and i don't know why :/
any clue?
i had a QC4+ adapter some weeks ago bought from amazon
https://www.amazon.de/helpers-lab-L...F8&qid=1538499272&sr=1-2&keywords=helpers+lab
there is absolutely no difference between QC4+ and a normal QC3.0 adapter.
I've send back the QC4+ adapter, by the way, Power Delivery 3.0 is 100% compatible with QuickCharge 4+. I've a power delivery powerbank and they can charge my phone on the same speed as a QC3.0 or QC4+ charger. I have compared all adapters and there is no advantage of Quick Charge 4+
With QC4+ adapter the phone charge on maximum 3300 mah ~17w
this is the same i get with my QC3.0 adapter and my PowerDelivery Powerbank.
Spend your money for other thinks as a expensive QC4+ adapter
Flash-User said:
i had a QC4+ adapter some weeks ago bought from amazon
https://www.amazon.de/helpers-lab-L...F8&qid=1538499272&sr=1-2&keywords=helpers+lab
there is absolutely no difference between QC4+ and a normal QC3.0 adapter.
I've send back the QC4+ adapter, by the way, Power Delivery 3.0 is 100% compatible with QuickCharge 4+. I've a power delivery powerbank and they can charge my phone on the same speed as a QC3.0 or QC4+ charger. I have compared all adapters and there is no advantage of Quick Charge 4+
With QC4+ adapter the phone charge on maximum 3300 mah ~17w
this is the same i get with my QC3.0 adapter and my PowerDelivery Powerbank.
Spend your money for other thinks as a expensive QC4+ adapter
Click to expand...
Click to collapse
Thank you very much for your answer, i was looking like crazy on youtube about QC 4.0, but didn't found anyone using.
\o
I think mi8 hardware support qc4.0 but the software for qc4.0 to work still not activated... Probably kernel related
Flash-User said:
i had a QC4+ adapter some weeks ago bought from amazon
https://www.amazon.de/helpers-lab-L...F8&qid=1538499272&sr=1-2&keywords=helpers+lab
there is absolutely no difference between QC4+ and a normal QC3.0 adapter.
I've send back the QC4+ adapter, by the way, Power Delivery 3.0 is 100% compatible with QuickCharge 4+. I've a power delivery powerbank and they can charge my phone on the same speed as a QC3.0 or QC4+ charger. I have compared all adapters and there is no advantage of Quick Charge 4+
With QC4+ adapter the phone charge on maximum 3300 mah ~17w
this is the same i get with my QC3.0 adapter and my PowerDelivery Powerbank.
Spend your money for other thinks as a expensive QC4+ adapter
Click to expand...
Click to collapse
It's not just speed that improves with each version, it's also efficiency. Less power drawn to charge at the same speed = less heat.
ArmedandDangerous said:
It's not just speed that improves with each version, it's also efficiency. Less power drawn to charge at the same speed = less heat.
Click to expand...
Click to collapse
Good that you say that....
I forgot to mention that the QC4+ charger getting very hot in both situations, in IDLE and when Charging a phone. You can read the same phenomenon in feedbacks of the charger I mentioned from Amazon.
I stay with it, IT IS NOT WORTH the money you've to spend for a QC4.0+ charger, there is absolutely NO Advantage to buy it. I've tested for myself and this is just my opinion.
and as i said, its more useful to buy a PowerDelivery 3.0 charger instead a QC4+ charger because PD is 100% compatible with QC.
Here is some info about it:
Quick Charge or Power Delivery
It seems that PD can deliver a much higher power output, but actually most smartphones do not need more than 18w charging, that’s why Qualcomm’s Quick Charge is widely adopted by most of smartphones, while Power Delivery as a standard that anyone can use is more designed for larger devices like laptops and household appliances.
What’s more, Qualcomm announced Quick Charge 4.0 in 2016 which is compatible with Power Delivery. In other words, Quick Charge 4.0 has simply learned to speak PD language, but still does the same thing as Quick Charge 3.0 with a few upgrades.
Flash-User said:
i had a QC4+ adapter some weeks ago bought from amazon
https://www.amazon.de/helpers-lab-L...F8&qid=1538499272&sr=1-2&keywords=helpers+lab
there is absolutely no difference between QC4+ and a normal QC3.0 adapter.
I've send back the QC4+ adapter, by the way, Power Delivery 3.0 is 100% compatible with QuickCharge 4+. I've a power delivery powerbank and they can charge my phone on the same speed as a QC3.0 or QC4+ charger. I have compared all adapters and there is no advantage of Quick Charge 4+
With QC4+ adapter the phone charge on maximum 3300 mah ~17w
this is the same i get with my QC3.0 adapter and my PowerDelivery Powerbank.
Spend your money for other thinks as a expensive QC4+ adapter
Click to expand...
Click to collapse
I bought Razer QC 4+ for my Xiaomi mi 8, but when I plug it to my phone, there is no Quick charge icon(round with thunder) and on lock screen no any text with "charging fast". Why? I can't understand
dentistgev said:
I bought Razer QC 4+ for my Xiaomi mi 8, but when I plug it to my phone, there is no Quick charge icon(round with thunder) and on lock screen no any text with "charging fast". Why? I can't understand
Click to expand...
Click to collapse
Have u found any solution or reason?
sisqoboy said:
Have u found any solution or reason?
Click to expand...
Click to collapse
No, but I read a lot and understand, that qc4 + support PD 3.0 and it give maximum 2800mA and charges by 2 channels. And we have fast charging with 12 v and 1.5A = 18 W, thats why we have no hot battery. With qc 3.0 we have 3700mA, thats why we have hot battery. And Miui qc logo appears with 3000mA and higher. Conclusion - QC 4+ works with PD technology
dentistgev said:
No, but I read a lot and understand, that qc4 + support PD 3.0 and it give maximum 2800mA and charges by 2 channels. And we have fast charging with 12 v and 1.5A = 18 W, thats why we have no hot battery. With qc 3.0 we have 3700mA, thats why we have hot battery. And Miui qc logo appears with 3000mA and higher. Conclusion - QC 4+ works with PD technology
Click to expand...
Click to collapse
Can you try after updating to 10.3.1.0? I did and now PD charging is also marked as quick charge (text and lightning icon too). Using a (hopefully) PD3.0 capabke charger (Blitzwolf BW-PL4 45W). I also has a Baseus QC4.0+/PD3.0 car charger, but I can't figure out which protocol is working as the phone is compatible with both and only the Type-C port of the charger provides both.
spejzajto said:
Can you try after updating to 10.3.1.0? I did and now PD charging is also marked as quick charge (text and lightning icon too). Using a (hopefully) PD3.0 capabke charger (Blitzwolf BW-PL4 45W). I also has a Baseus QC4.0+/PD3.0 car charger, but I can't figure out which protocol is working as the phone is compatible with both and only the Type-C port of the charger provides both.
Click to expand...
Click to collapse
I am on Global dev Rom, yesterday I got 9.4.18 and today I will try to charge, I have 1 Razer QC 4+ adapter 27 w, and second is 60W PD 3.0 charger, I will check today and write you
spejzajto said:
Can you try after updating to 10.3.1.0? I did and now PD charging is also marked as quick charge (text and lightning icon too). Using a (hopefully) PD3.0 capabke charger (Blitzwolf BW-PL4 45W). I also has a Baseus QC4.0+/PD3.0 car charger, but I can't figure out which protocol is working as the phone is compatible with both and only the Type-C port of the charger provides both.
Click to expand...
Click to collapse
Yes, now it's work,on 9.4.18. finally.
dentistgev said:
Yes, now it's work,on 9.4.18. finally.
Click to expand...
Click to collapse
Goog to hear. Can you post some details from Ampere or USB power meter, how voltage and amperage takes shape (especially in the lower percentage area)? Just to be able to compare with mine. Thank you.
spejzajto said:
Goog to hear. Can you post some details from Ampere or USB power meter, how voltage and amperage takes shape (especially in the lower percentage area)? Just to be able to compare with mine. Thank you.
Click to expand...
Click to collapse
I measured with Amper meter with Razer QC4+ 24w charger and Helper 45 W PID 3.0 charger. It's start from 2870 mAm and grows to 3300
Sadly I don't have any QC4 charger, but here is the original Mi8 Charger and cable charging graph.
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Is the total charging time of QC 3.0 and QC 4.0 different?
dentistgev said:
I measured with Amper meter with Razer QC4+ 24w charger and Helper 45 W PID 3.0 charger. It's start from 2870 mAm and grows to 3300
Click to expand...
Click to collapse
gdaniel said:
Sadly I don't have any QC4 charger, but here is the original Mi8 Charger and cable charging graph.
Click to expand...
Click to collapse
Thank you guys. This is almost identical to my 18W QC3.0 and 45W PD3.0 charger (tops at 3400mA).
According to this gtrusted article,
The Xiaomi 18W QC 3.0 Charger supports the same power profiles of 15 watts (5 volts @ 3 amps), 18 watts (9 volts @ 2 amps) and 18 watts (12 volts @ 1.5 amps),
[...] with its battery fully discharged, we could see charging initially went up to around 16.7 watts (6.2 volts @ 2.7 amps) which later dropped slightly to about 15.4 watts. The current pulled continued to decrease along a 5 volts rail towards the end of charging to eventually settle close to zero when the battery was almost full
Click to expand...
Click to collapse
However, if using a PowerDerlivery 3.0 charger, we could benefit from Mi 8 support of 27 watts (9 volts @ 3 amps), and 27 watts (12 volts @ 2.25 amps) for charging.
I am after am AUKEY charger that is capable of switching between those voltages, which is called PDO. And according to that it is possible to charge 50% battery in 30 minutes.
Our Mi 8 phone has been tested to support this PDO profiles:
7.5w (5V - 1.5A)
15w (5V - 3A)
27w (9V - 3A)
27w (12V - 2.25A)
As such: QC4+ = PD3.0 + PPS + QC3.0

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...
Click to expand...
Click to collapse
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%.
Click to expand...
Click to collapse
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!

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.
Click to expand...
Click to collapse
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?
Click to expand...
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!

Question Superfast charging + emark cables -- are they needed?

So I have a 45W charger, thinking about purchasing a 65W charger. I know The Tab S8 Plus only goes to 45W.
My question: are there any advantages to using an emark enabled cable?
I'm getting super fast charge notice with a 60W cable, no emark.
In my google searches, someone mentioned you can get "super fact charging 2.0" if you use an emark cable. Other pages said you only need emark above 60W. I found this comment on one site "... the Samsung Note 10+ or S20 Ultra which supports 45W fast charging. With these devices, the maximum electrical current is 4A, therefore it also requires a 5A cable with E-Mark. "
Does anyone know the ins and outs of this?
Thanks,
Joe
Get the recommended Samsung OEM brick and use the cable that comes with it. For the N10+ the 25w brick/cable fast charges fine and lasts for years if you don't roll up the cable.
Charging issues are hard to troubleshoot and non OEM bricks/cables only add to that burden.
At $20 a pop the 25w brick/cable is a no brainer.
So I have managed to answer my own question:
With a normal 3.1A US0b-C to USB-C cable, my 45W power supply is throttled back to 25W. It is reported as "Superfast Charge" mode by the tablet. Using Ampere, it reports that the battery is being charged at 5A at 4.2V --~ 21W
I bought a 100W E-Mark cable, and it now reports "Superfast Charge 2.0" -- and now Ampere reports it has bumped up to 7.5A at 4.36 V. So it is bumped up to 32W. Still not seeing 45W, though.
So it would seem to be charging 50% faster with the new cable.
Joe
I ues this combo for my s8+:
Anker PowerPort III 65W
Anker PowerLine III-Flow
It gives me 28W which is plenty fast for me. I can also use same charger for all of my devices, my laptop included

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