Database Users

Anyone else having insane charge times?

I just finally got my phone to die after a lot of use from 10 hours of music, 3 hours of web browsing/facebook, 1 hour of modern combat 4, and a crap load of texting and calls. Well when i plugged it in its charging really fast. I seem to get about 5-8% per minute. is something off or is this just really quick at charging.
EditL ok it took about 30 minutes to a full charge.....

The Samsung charger that comes with the phone has a new chip that charges the phone at 2A so it will be quicker. If you use a different cord it'll go back to being slow.

Yeah I absolutely love this charger. Quickest charge ever.
Sent from my Galaxy S4

Its insane with how it is. on my SIII i used my old Palm Pre charger (old phone i use to have haha i miss the OS of it) but all my other cords got loose and fell out easy but for that cord. I was use to like a 2 hour charge and some wall outlets it would be 3 hours. this is insane for a 30 min charge haha and lasts all day for me.

It's the new Qualcomm Quick Charge technology.

rushco said:
The Samsung charger that comes with the phone has a new chip that charges the phone at 2A so it will be quicker. If you use a different cord it'll go back to being slow.
Click to expand...
Click to collapse
the tricky thing is you also have to use the USB cord they provided as well...the old usb cord in the new 2A adapter won't work
if you notice, it is thicker to handle the extra charge

eyecon82 said:
the tricky thing is you also have to use the USB cord they provided as well...the old usb cord in the new 2A adapter won't work
if you notice, it is thicker to handle the extra charge
Click to expand...
Click to collapse
I'm going to run a few tests using other cords (monoprice, belkin, and a couple others and I will update this thread in a couple days with the amp charge. My hypothesis is that the monoprice cables with a thicker wire gauge will be able to handle the charge but until I run proper tests I won't know.
Oh a question I had for any owners is if anyone's galaxy is getting super hot when charging?

rushco said:
The Samsung charger that comes with the phone has a new chip that charges the phone at 2A so it will be quicker. If you use a different cord it'll go back to being slow.
Click to expand...
Click to collapse
Are you guys sure about this? Qualcomm's site says it's their integrated chipset that facilitates the quick charge, not the cables.
Quick Charge 1.0 makes all this is available to the user with existing USB charging accessories—no new cables and wall chargers to buy.
Quick Charge 1.0 is offered to our customers as an integrated solution (as part of the PMIC, or power management integrated circuit) and
a standalone solution that interfaces to the USB connector. Any phone or tablet’s charging port can be enabled with Quick Charge.
Click to expand...
Click to collapse

sublimeike said:
Are you guys sure about this? Qualcomm's site says it's their integrated chipset that facilitates the quick charge, not the cables.
Click to expand...
Click to collapse
It's the chipset working in combination with a compatible charger. Using a regular charger will work, but charge times will be longer. The "cables" don't have anything to do with it actually. The guy from anandtech did a write up and charge time comparisons in the second section of their review: http://www.anandtech.com/show/6914/samsung-galaxy-s-4-review/2

kyhassen said:
Its insane with how it is. on my SIII i used my old Palm Pre charger (old phone i use to have haha i miss the OS of it) but all my other cords got loose and fell out easy but for that cord. I was use to like a 2 hour charge and some wall outlets it would be 3 hours. this is insane for a 30 min charge haha and lasts all day for me.
Click to expand...
Click to collapse
I finally retired my Pre for the S4.
The usb cable shouldn't matter, as long as it is in the Samsung Charger.

Pheonix28 said:
I finally retired my Pre for the S4.
The usb cable shouldn't matter, as long as it is in the Samsung Charger.
Click to expand...
Click to collapse
I loved that phone. Great OS, sad it didn't go further.
@Powerbird As for charging for me it does not get hot for me, a little warm but that's it. It was only on day one of getting it which weird.
Sent from my SPH-L720 using xda premium

Same as kyhassen here first day phone charger and cord got extremely hot when I first fully charged it. It ran 1day 15hours and am presently charging it and its not hot anymore. The charger was warm at first now it has cooled down that its at 92% I love that it charges really fast and will see how long it last this time.

You guys should have owned the HTC One, One of the reasons I left that phone was because of the 4.5 hour charge time. Ridiculous. Thank God the S4 is way better in that regard.

coojoe1000 said:
You guys should have owned the HTC One, One of the reasons I left that phone was because of the 4.5 hour charge time. Ridiculous. Thank God the S4 is way better in that regard.
Click to expand...
Click to collapse
That's better than how the sgsiii was. Mine took 6-9 hours to charge

eyecon82 said:
That's better than how the sgsiii was. Mine took 6-9 hours to charge
Click to expand...
Click to collapse
It did take a while. But I used a palm pre charger and it was like 3 hours. If i used a aftermarket cord I had it was 12 hours
Sent from my SPH-L720 using xda premium

Im using my note 2 charger and it seem slow charging compared to how fast my note 2 charged. Haven't tried the s4 charger cuz I thought they was the same (2amps). Is there a difference
Sent from my SPH-L720 using Tapatalk 2

I just went to plug my phone into the charger and found this!
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"lightbox_full_screen": "Full screen",
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Holy crap! I have mine charging now and I had check it. It's a little warm but it luckily it still doesn't have any holes in it.
Sent from my SPH-L720 using xda app-developers app

thisguyinoc said:
I just went to plug my phone into the charger and found this!
Click to expand...
Click to collapse
WTF!
I am not getting anywhere near 30 minutes. My first charge from dead to 100% with the phone off was about 2.5 hours. I am charging it right now from dead and it has been going for about an hour about 75% done. Wonder if I have a defective charger or cable? Will try a different cable to test first.

thisguyinoc said:
I just went to plug my phone into the charger and found this!
Click to expand...
Click to collapse
crawrj said:
WTF!
I am not getting anywhere near 30 minutes. My first charge from dead to 100% with the phone off was about 2.5 hours. I am charging it right now from dead and it has been going for about an hour about 75% done. Wonder if I have a defective charger or cable? Will try a different cable to test first.
Click to expand...
Click to collapse
same here man

Not All USB Cables Are Created the Same

I've done some testing on the best ways to charge the Nexus 9. Here's what I've found...
a. You'll want to upgrade your kernel.
The stock kernel for the Nexus 9 does not support charging over 1.5a, I'm using Elemental X which supports up to 2a.
b. Use a charger between 1.5-2a.
I'm using the Insiginia rapid charger from Best Buy.
I've tested 4 different cables to see the amp output from the charger with the new kernel using Ampere. The stock charger from the box, my Moto G LTE charger, an Insignia charger and a generic charger from ebay. The results are as follows...
Insignia Rapid Charger @ 5v/2.4a
I read the readings with the screen on 40% brightness and let them each sit for 60 seconds.
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Min is the minimum amperage the cable hit, max in the very maximum and avg is the average at which the output sat around.
As expected, the stock usb cable performed the best, while the generic charger was very unstable and wild (I probably won't use this charger anymore as a result).

Interesting about the kernel.
Also your title says cables then you talk about chargers. Cables can also make a big difference in how much power your device gets. What cables did you use?
*EDIT*
Ahhh i miss understood. you where switching cables not chargers.
you probably were seeing this http://lifehacker.com/cables-can-significantly-impact-the-charging-speed-of-y-1532784722

Thanks for this. Was wondering how much the cables mattered.
I tested my stock charger and cable. The average amps are 850-1100 mA. It's mostly around 980 mA, and the max I've gotten is 1160 mA. Doesn't seem to go beyond that.
I also tested a nokia cable with the stock charger that is 1.2 meters and got quite different results. It charges with the average amps at about 450-550 mA, with it mostly at about 500 mA. Max I got was 740 mA. Not using that cable again...
Kernel is FireIce which supports 2A charging, and brightness was at about 40%. Voltage was read at about 4.02-4.11V for both.
Gonna have to find a charger with a 2A output.
---------- Post added at 09:17 PM ---------- Previous post was at 09:12 PM ----------
JustusIV said:
Interesting about the kernel.
Also your title says cables then you talk about chargers. Cables can also make a big difference in how much power your device gets. What cables did you use?
*EDIT*
Ahhh i miss understood. you where switching cables not chargers.
you probably were seeing this http://lifehacker.com/cables-can-significantly-impact-the-charging-speed-of-y-1532784722
Click to expand...
Click to collapse
I also misread the post the first time. Thought he was talking about chargers, when in fact he was talking about the cables for the chargers,

Sorry about the confusion, should have said 'Insignia Adapter' lol I'm curious about some of the other chargers I have lying around the house now.

i had learned this with my asus t100 wintab. that thing is picky as hell when it comes to cables. one of the best cables i've used are the ferrous monoprice ones. shorter is better. samsung's stock cables are just as good.

Using an iPad charger with a 12inch sony headphone charger cable and getting around 1480mah on average. Using Elementalx kernel.

HiSpeed 2A charging cable
Just wanted to share my experience. I have a couple 6ft cables that would only charge at 500mA, even ploperly detected as AC charging. I just picked up the cable below and get a very consistent 1500mA avg (1400-1600). 6ft long 20awg
PortaPow 20AWG TPE 6.5ft Charge Only $8.99
http://www.amazon.com/gp/product/B00RQ5AZL6/ref=as_li_tl?ie=UTF8&camp=1789&creative=390957&creativeASIN=B00RQ5AZL6&linkCode=as2&tag=digihoop-20&linkId=LS5AOWJFUD3ZL6PI

2a Samsung charger the one I got from my note 3
Stock cord is the best!!
Tryed other longer ones
Slower charge

USBhost said:
2a Samsung charger the one I got from my note 3
Stock cord is the best!!
Tryed other longer ones
Slower charge
Click to expand...
Click to collapse
Weird thing is that I also tried using the note 3 charger with a lot of cables including the stock and got slower charging than the stock charger!
I might just invest in the cable mentioned above to see if it helps.

USBhost said:
2a Samsung charger the one I got from my note 3
Stock cord is the best!!
Tryed other longer ones
Slower charge
Click to expand...
Click to collapse
same here. the best cable/charger combo i've tested is the stock samsung charger and 3' cable (not sure which box it's from since i've had so many galaxy devices, but they're all the same). the 5' cable hits about 1400. using a monoprice 6ft cable does just as good as the 5' cable. i have a 3' monoprice in the car but too lazy to get it to test it. the best generic cables i found are these:
http://www.monoprice.com/Product?c_id=103&cp_id=10303&cs_id=1030307&p_id=5457&seq=1&format=2
i'm pretty sure i'd squeeze a little more juice if i got the 1.5' ones.

madsquabbles said:
same here. the best cable/charger combo i've tested is the stock samsung charger and 3' cable (not sure which box it's from since i've had so many galaxy devices, but they're all the same). the 5' cable hits about 1400. using a monoprice 6ft cable does just as good as the 5' cable. i have a 3' monoprice in the car but too lazy to get it to test it. the best generic cables i found are these:
i'm pretty sure i'd squeeze a little more juice if i got the 1.5' ones.
Click to expand...
Click to collapse
Wow, those are pretty inexpensive. Thanks for posting

Not a surprise. Many (most I suppose) of the cheaper cables simply dont have thick enough wire, too much resistance. For decent and cheap cables I like the Amazon basics cables. The newer USB3 versions have thick gauge wire so the 6 footers charge at full speed even with devices that support high amperage charging.

linuxsense said:
Not a surprise. Many (most I suppose) of the cheaper cables simply dont have thick enough wire, too much resistance. For decent and cheap cables I like the Amazon basics cables. The newer USB3 versions have thick gauge wire so the 6 footers charge at full speed even with devices that support high amperage charging.
Click to expand...
Click to collapse
I'll keep that in mind about the amazon basics brand. Im just using a cheap china made brand, (i dont know what brand) and they charge pretty slowly, but it's alright. If the device is dead, I'll plug it in, and it'll be charged by morning. I don't really need anything too much fancier or faster than that.

The "basics" cables are a real bargain. I am very careful about the cables I use these days after my wife used a cheap cable on her N7 and it shorted out on the connector and roasted the pins on the device. Not sure how that happened but I suspect a very sloppy fit didn't help.

I'm using a monoprice cable (6ft i believe) with the oneplus one charger, and it works perfectly. The monoprice USB cables are among the best I've used; they're durable, reliable and the springs seem to keep their tension over time, something I've found that cheaper USB cables can have trouble with.

Xiaomi Redmi Note 2 Charging Analysis

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Xiaomi has recently released their new smartphone, the Redmi Note 2. This new model comes with a 5.5-inch 1080p resolution display, and is powered by a Mediatek 2.2GHz 64bit Helio X10 Octa Core cpu with 2GB of RAM,3060mAh battery; It also comes with MIUI V7 (base on Android 5.0).
The power adapter for redmi note 2 is 5V/2A, and it also comes with 3.9ft (1.2m) micro usb cable.
We have got this device for few days, and busy testing the charging performance. We test with the original chargers, the tronsmart charges (wall charger and car charger) , and also the charger which support Mediatek Pump Express Plus.
Here are some simple results base on our test:
1)Total Chagring time from battery 0% to 100% is 2 hours 10 mins with stock power adapter and stock usb cable. detail table is here:
Time Battery
11:00PM-11:10PM 0%-10%
11:10PM-11:30PM 10%-25%
11:30PM-12:00PM 25%-52%
12:00PM－0:30AM 52%-78%
0:30AM-1:00AM 78%-96%
1:00AM-1:10AM 96%－100%
It can get 10% power in 10 mins charging, and 52% power in 1 hour. In 1.5 hours, it can get 78% power.and in reset times, it can get battery from 78% – 100%.
2) Redmi Note 2 don’t support Qualcomm quick charge or Mediatek Pump Express fast charge, and even Xiaomi offer 5V/2A power adapter, but the max charging current is just 1.38amp, and total charging watt is lower than 10W. see the photos here:
(for reference, the Oneplus Two also have 5V/2A charger, the charging current can reach 1.9amp and total charging watt is 10W., We also use the oneplus two charger to charge on redmi note 2, same result, max charging current is just 1.38amp) .so the problem is not the charger, maybe xiaomi lock the charging current in the software? for heat? for safe? or other reason?
Here is the photo for the stock charger:
and then we test with our wall charger and car charger, here is the information:
(1) test with one port qc2.0 wall charger
(2) Test with 3-port USB wall charger:
(3) Test with dual port usb car charger:
(4) Test with 4 port usb car charger
From the above test, you can see, all of our chargers can offer same current as the original xiaomi charger.
But the redmi note 2 can’t accept more current than 1.4amp. All of our chargers’ usb port can offer 2.4Amp charging current, however, redmi note 2 just can accept 1.4amp.
So if you are looking for some back up wall charger, and new car charger for your Redmi Note 2 smartphone. Our Tronsmart Charger series should be your first choice.
Some tips about charging speed:
The charging speed is decided by three part:
(1) How much current/volt the smartphone can accept?
(2) How much current/volt the charger can offer?
(3) Which usb cables are you using?
Please make sure to use the high quality usb cables, our tronsmart usb cables are all 20awg, can delivery high current.
Any questions about Redmi Note 2 charging, feel free to contact us.
Tronsmart
Source: http://www.tronsmart.com/?p=3644

Thanks for the good review.
I assume it's not a problem at all: to prolongate capacity life it's recommended to charge at 0.5C.
Unless there's something new with li-ions, that I don't know.)
BTW, is this xiaomi using li-pol? Just curious.
Sent from my HTC One mini 2 using Tapatalk

Thanks for the info.
Sent from my iPhone using Tapatalk

Is the rest of the phone any good?

Redmi Note 2 Prime
If you have a chance to test the prime version, it would be great. In any case, I will test the Redmi Prime Note 2 with your 3 port quick charger, when my phone arrives.
PS Was your test phone upgraded to the latest software release?

city2026 said:
Thanks for the good review.
I assume it's not a problem at all: to prolongate capacity life it's recommended to charge at 0.5C.
Unless there's something new with li-ions, that I don't know.)
BTW, is this xiaomi using li-pol? Just curious.
Sent from my HTC One mini 2 using Tapatalk
Click to expand...
Click to collapse
Don't understand your meaning very well, but i take a photo for the redmi note 2 battery, in case you guys are interested:
devilsking said:
Thanks for the info.
Gald for help
Sent from my iPhone using Tapatalk
Click to expand...
Click to collapse
LoneWolfSK said:
Is the rest of the phone any good?
Click to expand...
Click to collapse
In my opinion it's good, but we are mainly focus on the charging analysis, you can check other reviews in this forum.
Explore3 said:
If you have a chance to test the prime version, it would be great. In any case, I will test the Redmi Prime Note 2 with your 3 port quick charger, when my phone arrives.
PS Was your test phone upgraded to the latest software release?
Click to expand...
Click to collapse
Yes, we plan to review the prime version, we will put more and more newest smartphone charging analysis in our channel. and yes, i have updated to the last software when i do the charing review.

Well, We just get the redmi note 2 prime version.
The accessories are the same as redmi note 2 standard version.
and we run some quick test, the charging current is also 1.38A, which is lower than 2A.

GeekEric said:
Well, We just get the redmi note 2 prime version.
The accessories are the same as redmi note 2 standard version.
and we run some quick test, the charging current is also 1.38A, which is lower than 2A.
Click to expand...
Click to collapse
Any noticeable difference with the normal version?
Inviato dal mio One S utilizzando Tapatalk

ZioRò said:
Any noticeable difference with the normal version?
Inviato dal mio One S utilizzando Tapatalk
Click to expand...
Click to collapse
seems faster than the normal version. but need more test.

2 hours for a 3000mah battery, not bad.

Awesome review! You have time to do some more testing?
And do I read it correctly that is doesn't really matter with what you charge the Redmi Note 2 with, it's all pretty much same same mAh that goes in, right?

Danacy said:
Awesome review! You have time to do some more testing?
And do I read it correctly that is doesn't really matter with what you charge the Redmi Note 2 with, it's all pretty much same same mAh that goes in, right?
Click to expand...
Click to collapse
yes, we just test the tronsmart charger and compare with the original charger, because redmi note 2 don't support qc2.0, so the tronsmart qc2.0 charger just give it the regular charging speed, (still the same as original charger). i think xiaomi limit the current in the phone side. I am hoping it can reach real 2A current like they state in the charger, not just 1.38a.

GeekEric said:
yes, we just test the tronsmart charger and compare with the original charger, because redmi note 2 don't support qc2.0, so the tronsmart qc2.0 charger just give it the regular charging speed, (still the same as original charger). i think xiaomi limit the current in the phone side. I am hoping it can reach real 2A current like they state in the charger, not just 1.38a.
Click to expand...
Click to collapse
Thank you for your reply. On the MIUI forums the official announcement of the Redmi Note 2 states that is has quick charge though. You think these things are solvable by software updates?

Danacy said:
Thank you for your reply. On the MIUI forums the official announcement of the Redmi Note 2 states that is has quick charge though. You think these things are solvable by software updates?
Click to expand...
Click to collapse
Good Question...

GeekEric said:
yes, we just test the tronsmart charger and compare with the original charger, because redmi note 2 don't support qc2.0, so the tronsmart qc2.0 charger just give it the regular charging speed, (still the same as original charger). i think xiaomi limit the current in the phone side. I am hoping it can reach real 2A current like they state in the charger, not just 1.38a.
Click to expand...
Click to collapse
Danacy said:
Thank you for your reply. On the MIUI forums the official announcement of the Redmi Note 2 states that is has quick charge though. You think these things are solvable by software updates?
Click to expand...
Click to collapse
I have been hoping for a software fix. However, I am less optimistic after rereading the listing at geekbuying. It indicates that the phone has 5v/1.4 Amp "fast" charging.

Explore3 said:
I have been hoping for a software fix. However, I am less optimistic after rereading the listing at geekbuying. It indicates that the phone has 5v/1.4 Amp fast charging.
Click to expand...
Click to collapse
1.5 would be pretty much fast charging; the Ulefone Be Touch 2 has a fast charger at 1.5 and it loads very quickly. Too bad the tests clearly show a 1.38amp charging for the Redmi Note 2..:silly:

Danacy said:
1.5 would be pretty much fast charging; the Ulefone Be Touch 2 has a fast charger at 1.5 and it loads very quickly. Too bad the tests clearly show a 1.38amp charging for the Redmi Note 2..:silly:
Click to expand...
Click to collapse
The real quick charge will improve the volt to 9V and total watt is 18w, the 5V/2A or 5V/1.5 can't be called quick charge. and it can't be added via software update.
and xiaomi charger clearly said it is 5V/2A charger, however, the redmi note 2 just can accept 1.5A current.
Eric

I got some different result.
First of all, my redmi note 2 behave a lot differently under different charger.
With an iPAD 12W charger, it can go as low as 500mA to 700mA (stock cable)
With original charger, it goes around 1.5A.
Most other give as low as 500mA.
The noticeable difference is the voltage. The original charger give 5.4V where the others give 2.1 will charge slowly.
But it really doesn't consistent.
There is an app called Battery Monitor from 3c71 can read the input current. It may not be as accurate as the meter but it gives meaningful reading.
It shows that my devvice's input current were cap at 1458mA
---------- Post added at 01:42 AM ---------- Previous post was at 01:40 AM ----------
my wrong....... just did another test..
the widget shows +1925mA
And my Electric Meter showing 0.057A under 220V lol... with ipad adaptor and ... docomo cable.

i think we can modify this modifying some file, because exists some kernels with "ampers charge" modified at 2A
But... where is the file.... ?

I have noticed that even when GSam (app) and Ampere are telling me that it is charging at around 1.5A, it doesn't actually charge that fast. For example, GSam also told me it would take over 4 hours to charge to capacity. Now if it is really charge at 1.5A, and the battery is 3A, it should take two hours, no?
I use the original charger and it charges much faster, however this is not convenient for me.
I even have this special hub and charging cables: http://www.amazon.com/EasyAcc®-Char...8&qid=1442288174&sr=1-15&keywords=easyacc+hub

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 Google Pixel 3 can charge. A higher rating indicates that it charges extremely fast.
Then, drop a comment if you have anything to add!

The Pixel and Pixel 2 used to charge "fine" through a PC port. The pixel 3 charges extremely slowly. For example my Pixel 2 would be at 50% battery and using the USB port on my car it would be close to 90% when I got home. Under the same situation, the Pixel 3 would only be at 55%. Same problem using the PC port. I know I know it's NOT supposed to be fast charge but I am only stating the facts and differences. Stock charger charges fine.

Pixel 3 charges very slowly on my existing 2.4A (per port) multi usb charger. Clearly it's not a PD charger, but it always provided enough juice for my nexus 5x to charge quickly. Clearly the pixel 3 doesn't like it.

Can confirm this also. Ampere indicates that it pulls less than 200mA on any non-USB type C charger. This is different from my previous Pixel 2.

With Samsung fast wireless charger, s9 goes from 20%to 100 in less than 2 h, pixel 3 charged only 25% in 2 h....... Charging speed is awfull if you don't use Google chargers

nondoB said:
Can confirm this also. Ampere indicates that it pulls less than 200mA on any non-USB type C charger. This is different from my previous Pixel 2.
Click to expand...
Click to collapse
Something is not right there. I see around 1000 mA with an old 1.0A charger and around 1300 mA with various 2.4A ones. Even with 'slow' wireless I see 500-600 mA
Sent from my Pixel 3 using XDA Labs

With Nov security update. No improvements. It charges fine with pd charger but insanely slow with any other.

My Pixel 3 charges plenty fast for me. Although, I typically use my Dell Latitude 20v (45W) PD charger.

piccit said:
Something is not right there. I see around 1000 mA with an old 1.0A charger and around 1300 mA with various 2.4A ones. Even with 'slow' wireless I see 500-600 mA
Sent from my Pixel 3 using XDA Labs
Click to expand...
Click to collapse
I'm not an expert at this stuff and certainly might be missing something but charging at 1000mA from a 1A charger should be physically impossible. Wouldn't that be 100% efficiency?

Yup.. Charging is too slow.. Infact, the charging time estimated (which is shown on the lock screen when the phone is being charged) is also wrong.. May be it gets adjusted over time...

tranquill1800 said:
Yup.. Charging is too slow.. Infact, the charging time estimated (which is shown on the lock screen when the phone is being charged) is also wrong.. May be it gets adjusted over time...
Click to expand...
Click to collapse
The estimate is adjusted over time. To my knowledge, all fast charge technologies are able to charge much quicker when the battery is low, but then slow the charge down as the battery approaches a fully charged state/heats up. The estimate would simply be a guess, since they likely are, app status, ambient temperature and battery condition dependent.
This can be seen in the graph on xda's quick charging comparison. Note that all the technologies start out quite fast but eventually taper off. Also note that USB-PD is the slowest (most conservative) of the technologies after the battery gets to about %40 charge.
https://www.xda-developers.com/charging-comparison-oneplus-huawei/
I would add that my new pixel 3 does appear to charge a little slower than some of my previous devices, however I've got several devices that use USB-PD so the versatility of USB-PD and ability to use one charger across my devices more than makes up for the extra 30 minutes or so of cellphone charge time. Guess everyone's expectations are different.

"Fast charging" on the Pixel is via Power Delivery. This is only possible over USB-C; PD can negotiate higher charging rates by increasing the voltage. This is not possible with PC type A ports; type A is rated for 5v, 3a max.
Qualcomm Quick Charge does adjust voltage and uses type A ports, but it uses the data pins for rate negotiation, while PD uses pins unique to USB-C.

jimv1983 said:
I'm not an expert at this stuff and certainly might be missing something but charging at 1000mA from a 1A charger should be physically impossible. Wouldn't that be 100% efficiency?
Click to expand...
Click to collapse
No. The charger is able to deliver 1000mA, but the total power delivered to the device will be less than it draws from the mains supply (the difference wasted as heat).

Powergreb said:
The Pixel and Pixel 2 used to charge "fine" through a PC port. The pixel 3 charges extremely slowly. For example my Pixel 2 would be at 50% battery and using the USB port on my car it would be close to 90% when I got home. Under the same situation, the Pixel 3 would only be at 55%. Same problem using the PC port. I know I know it's NOT supposed to be fast charge but I am only stating the facts and differences. Stock charger charges fine.
Click to expand...
Click to collapse
Exactly. Google has really messed up the charging speed. Pixel2 used to be fine with usb ports. Pixel3 charges faster only with stock charger with which it came.
Sent from my Pixel 3 using Tapatalk

David Horn said:
No. The charger is able to deliver 1000mA, but the total power delivered to the device will be less than it draws from the mains supply (the difference wasted as heat).
Click to expand...
Click to collapse
Yeah, that's what I thought but the comment I replied to said it was charging at 1A from a 1A charger. I would expect maybe 800mA from a 1A charger.

jimv1983 said:
Yeah, that's what I thought but the comment I replied to said it was charging at 1A from a 1A charger. I would expect maybe 800mA from a 1A charger.
Click to expand...
Click to collapse
Yeah idk if I just mixed up my numbers (I had been testing multiple charges) or what. Tried again and it averaged more around 600
Sent from my Google Pixel 3 using XDA Labs

The phone doesn't like to charge fast if the battery tempeturature is "high" (higher than 35 ºC). It's just a very agressive charge trhottle. Try charging again but in a colder weather or room.
It was my experience.

The charger that comes with the phone is not fast charger?
Got my phone yesterday and when I charged it, it said it's slow charging....
Edit
Second charge was fast charge according to info on screen.

After Dec update, the PC port charging is normal, not rad, not slow but normal. Problem fixed.

Wireless charging speed
Powergreb said:
After Dec update, the PC port charging is normal, not rad, not slow but normal. Problem fixed.
Click to expand...
Click to collapse
I felt similar way until today. But today at around 20% battery I put my Pixel 3 at Pixel Stand and have got that:
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"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
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I already posted regarding strange behavior of wireless charging: https://forum.xda-developers.com/showpost.php?p=78315849&postcount=73:
Before I've got original Pixel Stand, I used generic wireless charger. No surprises, it chargers P3 slowly. But there is more. Sometimes it doesn't charge P3 at all. Way more strange, that almost the same behavior I have with Pixel Stand. After some days I began to suspect there is a regularity - the charge at full speed works with at least 85% of charge at phone. If the charge is lower, the possibility the charge would be at rapid speed is pretty low. It can claim it charges rapidly, but in fact it doesn't charge at all, since the charge is going down at the same rate as phone out of any charging. I definitely have relatively small statistics and can not say for sure that 85% is a "red line" for triggering wireless charge start (regardless of speed in my case). Today even at 91% phone battery wireless charging at Pixel Stand didn't start at all (with "charging rapidly" announcement at screen and slowly discharging phone). Other functions of Stand work pretty good regardless of what's going on with charging. I didn't contact Google Customer Service since the results are unstable.
Click to expand...
Click to collapse
In case of regular charging through the USB-C cable from native Pixel charger I've never had any problems. But wireless charging even with original Pixel Stand doesn't look good. At the generic charger even after Dec update charging goes south - not charging at all or with original Google wireless charger just like at screenshot - rapid charging in day and a half. It's better, than no charge, but for $79.99 for original Pixel Stand it has to be faster.

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 Realme 3 Pro can charge. A higher rating indicates that it charges extremely fast.
Then, drop a comment if you have anything to add!

Very good
One of the very few things that are good out of the box about this phone. Charges from 10 to 100% in 75 minutes even with screen usage while doing so.

Paranoid_Android_1 said:
One of the very few things that are good out of the box about this phone. Charges from 10 to 100% in 75 minutes even with screen usage while doing so.
Click to expand...
Click to collapse
What 's about battery life for 1 day?

Cyl3el2Cleal2 said:
What 's about battery life for 1 day?
Click to expand...
Click to collapse
I never bring charger since use this phone?, mine is about 14-18 hours.

eugenebl27 said:
I never bring charger since use this phone, mine is about 14-18 hours.
Click to expand...
Click to collapse
Same here. If I want to go out and the battery is around 40%, I just plug the charger for a while. By the time I'm ready to go 15-20 minutes later, it's already around 70%. Thats more than enough juice for 9to5 office hours.

Cyl3el2Cleal2 said:
What 's about battery life for 1 day?
Click to expand...
Click to collapse
you can play any avg game for full day with out break

Realme 3 pro uses it's own VOOC 3.0 fast charger right? And it use snapdragon 710 that support Qualcomm quick charge 4.0
But Can realme 3 pro use qc 4.0 or even 3.0 atleast, like qc 3.0 powerbank or car charger maybe? They don't really have vooc accessories don't they? Just usual vooc charger?
Edit: I've found 6000mah vooc powerbank made by oppo itself, but the price is like 3 or 5 times more expensive than usual 10.000mah qc 3.0 powerbank price in here, insane ? i don't wanna pay that much for powerbank, so please still looking forward to see the compatibility between realme 3 pro and quick charge 4.0 or 3.0
Thanks

Charging time for me :
30 min - 0 to 44%
1 hr 25 min - 0 to 100%

I lost the original cable. I can't find a authentic vooc 3 cable anywhere. Please help. Without that particular 7 pin cable, it's 5 v 1 amp instead of 5 v 5 amp.

Chayan0071 said:
I lost the original cable. I can't find a authentic vooc 3 cable anywhere. Please help. Without that particular 7 pin cable, it's 5 v 1 amp instead of 5 v 5 amp.
Click to expand...
Click to collapse
Wrong... it'll be 5V 2A instead of 5V 4A

wow suspect said:
Wrong... it'll be 5V 2A instead of 5V 4A
Click to expand...
Click to collapse
No way, on the adapter it's clearly written 5v 4 amp

Use AccuBattery
I have taken measurements using the AccuBattery application, and this is the result
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"lightbox_toggle_sidebar": "Toggle sidebar"
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aditiya097 said:
I have taken measurements using the AccuBattery application, and this is the result
Click to expand...
Click to collapse
that's pretty interesting results. mine is consistent with 90 min for full charge

Chayan0071 said:
I lost the original cable. I can't find a authentic vooc 3 cable anywhere. Please help. Without that particular 7 pin cable, it's 5 v 1 amp instead of 5 v 5 amp.
Click to expand...
Click to collapse
The original cable is available at oppo online website.

Chayan0071 said:
I lost the original cable. I can't find a authentic vooc 3 cable anywhere. Please help. Without that particular 7 pin cable, it's 5 v 1 amp instead of 5 v 5 amp.
Click to expand...
Click to collapse
Search on gearbest for vooc!

Battery life is Amazing
Cyl3el2Cleal2 said:
What 's about battery life for 1 day?
Click to expand...
Click to collapse
For me, it's 36 hours. I use it all day, then it stays at standby at night while I'm asleep. Then I use it another day before charging. Works perfectly.

The compatibility
Ramdan2478 said:
Realme 3 pro uses it's own VOOC 3.0 fast charger right? And it use snapdragon 710 that support Qualcomm quick charge 4.0
But Can realme 3 pro use qc 4.0 or even 3.0 atleast, like qc 3.0 powerbank or car charger maybe? They don't really have vooc accessories don't they? Just usual vooc charger?
Edit: I've found 6000mah vooc powerbank made by oppo itself, but the price is like 3 or 5 times more expensive than usual 10.000mah qc 3.0 powerbank price in here, insane i don't wanna pay that much for powerbank, so please still looking forward to see the compatibility between realme 3 pro and quick charge 4.0 or 3.0
Thanks
Click to expand...
Click to collapse
I also looking for the same thing. It's quiet difficult to find one. I also looking forward the compatibility. Peace
Edit: i've try to search any info/video about the compatibility, and it's looks like realme 3 pro does not compatible with quick charge 3.0 (it will only be a normal charging if using qc 3.0). Still looking for qc 4.0 compatibility, but still not found one. About vooc powerbank, i came across with 2 other powerbank (both 10.000mah btw), not made by oppo, that support vooc charge for realme 3 pro. Unfortunately, it appears that it only available in my country. I've try to search it in banggood or amazon, but it didn't available. In theory, if the chip support qc 4.0 it should be compatible. But then again, what do i know. Peace

RM.Sigit said:
I also looking for the same thing. It's quiet difficult to find one. I also looking forward the compatibility. Peace
Edit: i've try to search any info/video about the compatibility, and it's looks like realme 3 pro does not compatible with quick charge 3.0 (it will only be a normal charging if using qc 3.0). Still looking for qc 4.0 compatibility, but still not found one. About vooc powerbank, i came across with 2 other powerbank (both 10.000mah btw), not made by oppo, that support vooc charge for realme 3 pro. Unfortunately, it appears that it only available in my country. I've try to search it in banggood or amazon, but it didn't available. In theory, if the chip support qc 4.0 it should be compatible. But then again, what do i know. Peace
Click to expand...
Click to collapse
VOOC is a Proprietary technology of Oppo, Other brands won't have it even if they advertise as one. Beware.