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How fast is fast charging ?

I plugged my Samsung fast charger into my S6 when the battery level was at 65% and then plugged my older non fast charger in and the time remaining gave me similar times on both chargers.
I thought fast charger was meant to be a lot faster ?
I've never charged from completely flat yet.

Fast charge is only for the first 40-50 % then it gets the charging rate of a normal charger...
Marketing magic
Although it does help for a quick boost.. if you're in a hurry to get some juice in the phone.
Sent from my SM-G925F using Tapatalk

Samsung's adaptive fast charger varies from 1 - 2A. So the maximum rate is 2A, which is not any faster than other 2A charger.

How long would it take to charge from 0-50% and 0-100% ?

the_chang said:
How long would it take to charge from 0-50% and 0-100% ?
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Would like to know this too
Sent from my SM-G920F using Tapatalk

For me it takes 75 minutes from about 15% to 100%.

0-100 % is 125 minutes. That is the fastest on the market IIRC

First and foremost, our fast chargers "charge" our phones at 9.0V ~1,67A

Fast charging bugs

I have a strange problem about fast charging after marshmallow update
When I plug my phone it's say fast charging but it's not
I noticed that's battery charge like slow and phone is cooler
When I plugged the charger and put it on again my device charge a Real Fast charge battery is real charging device get warm
I tried to charge when phone is off and every thing is OK
But I always have this problem when I use my s6 and I have to notice device temperature so I plug charge on and off if the fast charging is FAKE

Sorry for my bad English

XZ's battery charge time is 2.5 hour from 25%, is it normal?

XZ's battery charge time is 2.5 hour from 25%, is it normal?
I turned on battery care mode.

Battery care is turned on?

Mine also came with a slow charger. When I plug it to my portable battery, it can still be pretty fast (and hot...)

With stock UCH 12 charger it takes my phone about 1,5h to get fully charge. 30min to 60% and 1h for the rest. It seems like Sony disabled any type of QuickCharge above 60% to prevent battery damage and it doesnt matter what type of charger you would use alter that - it will stick to 1000mA all the time.
Two things:
1) are you using QuickCharge charger?
2) do you or any of your apps use phone while charging?
Any of those would prolong charging time.

L3RAT said:
With stock UCH 12 charger it takes my phone about 1,5h to get fully charge. 30min to 60% and 1h for the rest. It seems like Sony disabled any type of QuickCharge above 60% to prevent battery damage and it doesnt matter what type of charger you would use alter that - it will stick to 1000mA all the time.
Two things:
1) are you using QuickCharge charger?
2) do you or any of your apps use phone while charging?
Any of those would prolong charging time.
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Click to collapse
Please see my answer are listed below and thanks
1) are you using QuickCharge charger?
Yep.
The charger is UCH12.
2) do you or any of your apps use phone while charging?
No.
I turned off the phone during charging.

jeffreywen said:
Please see my answer are listed below and thanks
1) are you using QuickCharge charger?
Yep.
The charger is UCH12.
2) do you or any of your apps use phone while charging?
No.
I turned off the phone during charging.
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Click to collapse
Try to keep it turned on then. I guess Sony could set offline charging to minimal settings and control QuickCharge with software. Try "Ampere" app to check how many ampers are you getting while charging (download from play store, no root required). It should oscillate from 700mA to 2500mA. If not (e.g. stuck at 1000mA) it means your charger could be defective and should be exchange for new one.

man. I got 75% in an hour while the phone was off :/ using the same charger as yours so there must be a problem, try to change the cable

Guys does anyone know if the USB type-C cable which comes with the non-fast charger is 3.0 Quick Charge compatible?? I've ordered a Anker 3.0 Quick Charge charger just wanted to make sure the cable is.

My case is even worse, tales 3 hours to charge from 13% to 97%
I am even using the newest Sony 3A usb c to c quick charger!
What the hell..

XZ support QC 3.0 so it should be able to charge from 0%(theoretically) up to 100% 1h40-1h50 using a QC 3.0.
During my few weeks i've had this phone (recived with UCH20 charger) i tried to test phone's ability to charge quickly and failed it took usually 2-2h20 min with original charger. I've ordered chinese charger (sony's UCH12W is 4 times more expensive, even samsungs and htc chargers are much more cheaper).
During tests (using ampre) i tried to start charging when battery dropped to 10%. I used 2 charges original UCH20,Tronsmart WC1T and 3 USB-C cables 1x original, 1x unknown chinese, 1x tronsmart(original included with a charger).
Conclusion:
UCH20 is slower, Ampere won't show more than 1560mA 10-60/70% then something around 1100mA and 780 or less 90-100%
WC1T is faster, 10-60% 2220mA (or less depends on throttling/temperature) then about 1500mA to 90% and less than 1000mA (usually 500-800mA) 90-100%
Tested with onvo adaptive charging on, stamina off, wifi on, brightness auto (0-40%), there was no difference betwen cables only unknown chinese cable was slightly slower but that is only my opinion. Battery temperature oscylated between 26-37/38°C(Ampere)
This phone will only fast charge up to 60/70% then it slows down a bit and last 10% is slow, it should preserve battery health yet still allow you to charge it quickly when in a hurry so u can use it for another few hours until you'll get back home and plug it for a night.

bucho144 said:
XZ support QC 3.0 so it should be able to charge from 0%(theoretically) up to 100% 1h40-1h50 using a QC 3.0.
During my few weeks i've had this phone (recived with UCH20 charger) i tried to test phone's ability to charge quickly and failed it took usually 2-2h20 min with original charger. I've ordered chinese charger (sony's UCH12W is 4 times more expensive, even samsungs and htc chargers are much more cheaper).
During tests (using ampre) i tried to start charging when battery dropped to 10%. I used 2 charges original UCH20,Tronsmart WC1T and 3 USB-C cables 1x original, 1x unknown chinese, 1x tronsmart(original included with a charger).
Conclusion:
UCH20 is slower, Ampere won't show more than 1560mA 10-60/70% then something around 1100mA and 780 or less 90-100%
WC1T is faster, 10-60% 2220mA (or less depends on throttling/temperature) then about 1500mA to 90% and less than 1000mA (usually 500-800mA) 90-100%
Tested with onvo adaptive charging on, stamina off, wifi on, brightness auto (0-40%), there was no difference betwen cables only unknown chinese cable was slightly slower but that is only my opinion. Battery temperature oscylated between 26-37/38°C(Ampere)
This phone will only fast charge up to 60/70% then it slows down a bit and last 10% is slow, it should preserve battery health yet still allow you to charge it quickly when in a hurry so u can use it for another few hours until you'll get back home and plug it for a night.
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Good post, thanks for sharing,
I ve recently brought Anker PowerPort+1 charger QC3.0 compatible and used stock Sony cable and max output I got was 2180mA max using Ampere too.. What my question is now what should the XZ be drawing max? near 3000mA?? Battery care Off.
Ive ordered PortaPow 20AWG cable it states its also QC3.0 compatible so lets see how much it get and if it makes any difference to the charge times.
I will post my results in the next 2 days.

Charging speed

To power up, you consume Red Bull. But your phone just needs its adaptive fast charger. Rate this thread to express how quickly the Samsung Galaxy S8 can charge. A higher rating indicates that it charges extremely fast.
Then, drop a comment if you have anything to add!

I got problems with it...
Sometimes it charges really quick, like Quick Charge does. But then sometimes it says it needs about 8 hours to charge fully.
Thats why i voted Average 3* and charging speeds sometimes even differs if i plug it out and in again.
EDIT:
With the original charger which came in the box it works fine and needs about 1h and 40m to fully charge.

1 hour 45 mins normal charge with original cable and adapter S8 rocking stock AQF7 not rooted

ShiRaZ1988 said:
With the original charger about 1h and 40m to fully charge.
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Click to collapse
OK, the original charger, what is the Voltage & Amperage Output?
Also.....
From 25% to full charge using a QI Wireless Charger and the Original Charger that came with it, how long to full charge?
From 25% to full charge using the USB out on a laptop (.5Amp), how long to full charge?

ShiRaZ1988 said:
I got problems with it...
Sometimes it charges really quick, like Quick Charge does. But then sometimes it says it needs about 8 hours to charge fully.
Thats why i voted Average 3* and charging speeds sometimes even differs if i plug it out and in again.
EDIT:
With the original charger which came in the box it works fine and needs about 1h and 40m to fully charge.
Click to expand...
Click to collapse
Hi are you Iranian?
If you doesn't use official Charger of S8 that it's available in Phone Box it's probably correct that your device will not be charged very fast and you have to use the Official and trusted charger of Galaxy s8 that Samsung electronics have confirmed it.

Been using the s8+ for two weeks
Not sure what to say. When i check with Ampere app, it only shows it charges for 1000 maH
I have Xiaomi mi5 which charges for 2000-3000 maH with the same charger
How could samsung lose to Xiaomi?

After the August security patch the fast wireless charging is broken. I have the European version S8 and a choetech wireless fast charger. Does anyone has this problem after the last OTA update?
Just to point out, the fast wireless charging option is activated in the settings but the wireless fast charging is not working, only normal wireless charging.

BRK666 said:
After the August security patch the fast wireless charging is broken. I have the European version S8 and a choetech wireless fast charger. Does anyone has this problem after the last OTA update?
Just to point out, the fast wireless charging option is activated in the settings but the wireless fast charging is not working, only normal wireless charging.
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I was wondering if it was my wireless charger faulty... did you have any source on this bug or it's just your (and mine) experience?

you cant check charging current with ampere app, because Samsung changed charging method a lot after explosive s7.
basically if screen is on charging current drop to ~ 1000mah. and phone use 9v or 12v only if screen is off.
also if you phone charge longer than 2h something is wrong with your charger\wire or phone can't go to sleep properly due to "cancer" apps who prevent full sleep.
But iam here to ask owners of 25watt chargers, is it worth it? how long it takes to charge it with it?
i not sure if link are allowed here but here it is https://www.samsung.com/us/mobile/m...apter-for-galaxy-tabpro-s-25w-ep-ta300cweguj/

XDA_RealLifeReview said:
To power up, you consume Red Bull. But your phone just needs its adaptive fast charger. Rate this thread to express how quickly the Samsung Galaxy S8 can charge. A higher rating indicates that it charges extremely fast.
Then, drop a comment if you have anything to add!
Click to expand...
Click to collapse
1 and half hour and 1 t0 11

Mine charged from 0-100 in around 1:45

Here, Im using Alexis ROM and I hace adaptive fast charge original. Chargimg time: 1-100 in 1.51 hr Its Okay?

[Q] charging speed is pretty slow even when battery care is off

guys even when my battery care is off charging speed is pretty slow takes around 2:30-3 hours for a full charge.
quick charge should be 60% in 30 minutes right? I wouldnt mind it being 2 times slower than that, full charge at 100 minutes which is 1:40 hours but to get to almost 3 hours its even worse than no quick charge phones
how can I fix this?

madshark2009 said:
guys even when my battery care is off charging speed is pretty slow takes around 2:30-3 hours for a full charge.
quick charge should be 60% in 30 minutes right? I wouldnt mind it being 2 times slower than that, full charge at 100 minutes which is 1:40 hours but to get to almost 3 hours its even worse than no quick charge phones
how can I fix this?
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Does your charger support Quickcharge? What is the output of it?

St.Jimmy90 said:
Does your charger support Quickcharge? What is the output of it?
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its the stock sony charger...
5v=~1500ma
that sucks to ship a device that supports quick charge 3.0 and not send a quick charge charger....
which charger should I get and is it safe to use

St.Jimmy90 said:
Does your charger support Quickcharge? What is the output of it?
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its the stock sony charger
5v=~1500ma

madshark2009 said:
its the stock sony charger
5v=~1500ma
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Click to collapse
Ive got the same charger bro and mine just charged 38% in 40 minutes

I bought a vetter charger with qc3 and it's charging from 10% to 100% in ~2h40m, with battery care disabled. This qnovo is really bad.
0-50% 2400mah
50-60% 2000mah and so on.

I've bought a Anker quick charger 3.0.

Beetle84 said:
Ive got the same charger bro and mine just charged 38% in 40 minutes
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well maybe so but the higher the percentage the slower the charge speed, which leads to total of 2:40 hours to full charge up to 3:00 hours sometimes
so maybe the first 60-80% are quite fast but it still takes around 100 minutes to get to 80% and another 60 minutes for the other 20% at least which leads to a total of around 160 minutes which is around 160 minutes in total which in quick charge it should do 80% in 35 minutes and the other 20% in 40 minutes or so which leads to total of 75 minutes which is more than 2 times less.
and to think of the first 80% in quick charge it even does it almost 3 times faster!

Your charger is not quickcharge. Quickcharge must have lightning with 3.0 simbol near USB plug and P+ with 2.0 simbol on the other side of plug. Only Sony UCH12W has Quick Charge™ 3.0 and Pump Express Plus™ 2.0. Your Chrger is Sony UCH20C. Am I wright?

tomo100brt said:
Your charger is not quickcharge. Quickcharge must have lightning with 3.0 simbol near USB plug and P+ with 2.0 simbol on the other side of plug. Only Sony UCH12W has Quick Charge™ 3.0 and Pump Express Plus™ 2.0. Your Chrger is Sony UCH20C. Am I wright?
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yes but thats not the case, I checked youtube, even stock charger is faster to get to 60% than other devices (except the 1+5) but after 60 it just dies! slow as hell
even on quick charge 3.0 it maybe charged to 70/80% faster than stock charger but it still took it 2:40 hours to get to full 100% just like stock charger
so im guessing sony has their reason for shipping the phone with stock charger as it is even faster than other devices to charge to 60% so fast charge wouldnt help it so much because of qnovo