Quick Charger 4.0 wall charger

[thiagoserrao]

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,

 

[twistedh]

You could try the official Razer phone charger. That has QC 4

 

[thiagoserrao]

You could try the official Razer phone charger. That has QC 4

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?

 

[Flash-User]

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

 

[thiagoserrao]

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

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

 

[ShafiX94]

I think mi8 hardware support qc4.0 but the software for qc4.0 to work still not activated... Probably kernel related

 

[ArmedandDangerous]

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

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.

 

[Flash-User]

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.

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.

 

[dentistgev]

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

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

 

[sisqoboy]

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

Have u found any solution or reason?

 

[dentistgev]

Have u found any solution or reason?

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

 

[spejzajto]

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

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.

 

[dentistgev]

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.

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

 

[dentistgev]

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.

Yes, now it's work,on 9.4.18. finally.

 

[spejzajto]

Yes, now it's work,on 9.4.18. finally.

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.

 

[dentistgev]

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.

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

 

[gdaniel]

Sadly I don't have any QC4 charger, but here is the original Mi8 Charger and cable charging graph.

 

[danhtho]

Is the total charging time of QC 3.0 and QC 4.0 different?

 

[spejzajto]

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.

Thank you guys. This is almost identical to my 18W QC3.0 and 45W PD3.0 charger (tops at 3400mA).

 

[najabi]

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

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