Develop Bugs

[Q] E975 charger limit on amps?

i am thinking about if my E975 is limited when it comes to how many amps it can charge with bcs i recently brought a 2A charger also tried it out on my Google Nexus 7 2013 and i don't feel like it charges that much faster then my original LG charger with a 3meter flat OEM kable.
the charger i brought is said to charge with 2A while the original LG is only 1.2A shouldn't i be feeling a difference?

puma99dk| said:
.the charger i brought is said to charge with 2A while the original LG is only 1.2A shouldn't i be feeling a difference?
Click to expand...
Click to collapse
No, you shouldn't. You can plug it into a 10 Amp charger, but the phone will only draw the amount it needs. Remember, it's not the charger pushing the current to the phone, it's the phone pulling it from the charger. The charging current is determined by the phone - each Li-Ion or Li-Po battery has a controller curcuit. The important thing is for a charger to be able to provide what a device wants to draw - otherwise, it would charge slowly, or not at all. So, a charger should be rated for not less than X Amp. More amp rating won't hurt, but it won't increase the actual current...

oh this is very useful. I also had the same question.
mine came with a 750mA (.75A) charger. As I left my charger at home during the holidays, I had to make due with one that I bought from a nearby tech store. I was very happy with the charger that I bought as it charges my phone really fast. I found out that my new charger was also a 2A model.
so I guess, in my experience, I noticed a big improvement in charging speeds comparing the 750mA with the new 2A charger. But I guess coming from a 1.2A charger, it only makes little difference.

Is Qualcomm quick charge 2.0 supported on the OnePlus 3?

Hi guys,
Just a simple question... Is Qualcomm Quick Charge 2.0 supported on the OnePlus 3?
I know there is Dash Charge (which is great), but I have a powerbank which supports Quick Charge 2.0...
I want to know if it wil charge faster than a regular 5V/1A USB port.
Thx!

Same problem here, would like to know this too. Can anyone with a OP3 try and let us know the different charging times with a normal charger, QC QC2.0 and Dash charger?
Sent from my LG-H955 using XDA-Developers mobile app

I don't have a Quick Charge charger, but with another charger the OP3 pulls around 1.5 A @ 5V = 7.5 W from it. This is the USB compliant amount i think.
I don't think that the OP3 supports any version of Quick Charge... But with a capable charger (non-Dash) it's pretty quick, too! In my car it gains fairly quickly, even though i'm navigation with google maps and i don't have a Dash-Charge car charger! With previous phones (LG G3 for example) the phone even LOST battery capacity while being plugged in!

Normal 5V 2.4A Charger: 1.5A @ 5V
5V 3A Quick Car Charger (for Nexus 5X/6p): 1.5A @ 5V
Quick Charge 2.0 Wall Charger: 1.5A @ 5V... you're beginning to get the idea...
Dash Charge Wall Charger: 3.5A @ 5V

And I tried a genuine 5V 1A iphone charger, 0.5A @ 5V

GeneralDisaray2 said:
Normal 5V 2.4A Charger: 1.5A @ 5V
5V 3A Quick Car Charger (for Nexus 5X/6p): 1.5A @ 5V
Quick Charge 2.0 Wall Charger: 1.5A @ 5V... you're beginning to get the idea...
Dash Charge Wall Charger: 3.5A @ 5V
Click to expand...
Click to collapse
This.

Just did the test by myself with the 'Ampere' app.
Battery was at 55%.
Dash Charge: 3330 mA
Qualcomm Quick Charge 2.0 Charger: 1420 mA
PC USB Port: 380 mA
My Nexus 6 charges at 2050 mA when connected to the Qualcomm Quick Charge 2.0 Charger.
Is it in some way possible to 'tweak' the OP3 so it can take 2000 mA when connected to a QC 2.0 charger?
I'm using ElementalX kernel btw.

OP3 is not quickcharge compatible so when connected to a quickcharge charger, the charger is in normal mode at 5V with a maximum of intensity that depend on the charger.
BUT the OP3 have only 3 charging step, one at 5V 0.5A, one at 5V 1.5A and then 5V 3.5A only if it's connected to a dash charger with a dash cable (or a oppo vooc with an adapter).
So for example, you connect to a 5V 1A charger, it will charge at 0.5V, like on a computer. But if it can draw 1.5A, it will do it but not above that unless a dash charger.
I tried many charger and it will not charge at another intensity.

Fast Charge

Hi guys, the Zenfone 3 deluxe supports qualcom quick charge 3.0 however it seems to be locked to the oem charger. Any other licenced qc 3.0 charger does not quick charge the phone. How hard would it be to get around this? Mainly for qc 3.0 powerbanks.

Huffy1 said:
Hi guys, the Zenfone 3 deluxe supports qualcom quick charge 3.0 however it seems to be locked to the oem charger. Any other licenced qc 3.0 charger does not quick charge the phone. How hard would it be to get around this? Mainly for qc 3.0 powerbanks.
Click to expand...
Click to collapse
This is not true. I am using this one - https://www.amazon.de/gp/product/B01EH11AS8/ref=oh_aui_detailpage_o04_s00?ie=UTF8&psc=1
and the quick charge 3.0 works fine. I am still using the original type-c cable that came with the phone though.
Note: Make sure that you have plugged in the USB end of the charger correctly, push it all the way in. If it's only pushed in partially, then you may not be getting the full power for Quick Charge. You can verify this by using a tool like AIDA64 from the playstore and checking the "Charge Rate" under battery.

This is where I was told it's not supported.
wap.ithome.com/html/262150.htm
Does it say Fast charging on the lock screen?

Huffy1 said:
This is where I was told it's not supported.
wap.ithome.com/html/262150.htm
Does it say Fast charging on the lock screen?
Click to expand...
Click to collapse
Update: Sorry guys, I realized that the OEM charger is indeed much faster at charging. Read posts below.

postimg.org/image/6wis1rux1/ - using licenced qc3.0 charger
postimg.org/image/ndr13s0pv/ - using oem charger.
Further test screen off
15min charge with licenced qc3.0 gives 13%
15min charge with oem charger gives 27%
Same test with screen on (playing video)
15mins with either charger yields about 15%, no noticible difference. Seems like the oem charger throttles when screen is on.
All tests are run when the battery is below 20%.
Same oem cable used for all tests.
Using the oem charger to fully charge my phone does it nearly twice as fast as the qc3.0 charger.
Don't know how your able to achieve the same speed regardless of charger

Hi guys, I've been experiencing the same problem with original charger, that's very big and it's seems that didn't have quick charge. I've a samsung charger and with samsung charger it wroks fine. I'll try to well plug thw original , but, it's thinner samssung's one.

Huffy1 said:
postimg.org/image/6wis1rux1/ - using licenced qc3.0 charger
postimg.org/image/ndr13s0pv/ - using oem charger.
Further test screen off
15min charge with licenced qc3.0 gives 13%
15min charge with oem charger gives 27%
Same test with screen on (playing video)
15mins with either charger yields about 15%, no noticible difference. Seems like the oem charger throttles when screen is on.
All tests are run when the battery is below 20%.
Same oem cable used for all tests.
Using the oem charger to fully charge my phone does it nearly twice as fast as the qc3.0 charger.
Don't know how your able to achieve the same speed regardless of charger
Click to expand...
Click to collapse
Interesting ... I stand corrected now regarding the "Fast Charging" on the lock screen.
I never used the original charger because I bought mine directly from Taiwan which has an US plug which I cannot use here in Germany directly without an extension.
I tried the OEM charger now with an adapter and yes you are right, the Charge Rate with the OEM charger is 2 times faster than with other chargrers.
OEM charger - 2900ma charge rate
Other charger - 1300ma charge rate
---------- Post added at 11:29 AM ---------- Previous post was at 11:02 AM ----------
Actually now I'm confused. When I plugged in the OEM charger, it said "Fast Charging" for a short while and then it says "Charging". The Charge rate also came down from 3000ma to 1300ma and down to 800ma when the battery is at 90%.
I will do some proper tests with the different chargers and post back.

Confirmed: OEM charger is much faster than other QC 3.0 chargers

When the phone reaches 70-80%, the charging rate will slow down and just trickle charge. This is normal as it can be dangerous to keep charging at Fast speeds when the battery is close to full capacity. So if your phone has 80% and you put it on charge, it will not Fast charge regardless of the charger you use.

Huffy1 said:
When the phone reaches 70-80%, the charging rate will slow down and just trickle charge. This is normal as it can be dangerous to keep charging at Fast speeds when the battery is close to full capacity. So if your phone has 80% and you put it on charge, it will not Fast charge regardless of the charger you use.
Click to expand...
Click to collapse
Thanks for the information

I can also confirm fast charging doesn't work with my QC 2.0 charger. Interesting thing to note is it outputs 5V - 2A and 9V -2A. My guess is this charger from Asus that fast charges the Zenfone 2 would work on our phones because it has the same outputs if you read the description. It's worth a shot and you could always return it to Amazon if it doesn't work.
http://store.asus.com/us/item/20150...nFone+2+&+T100CHI+18W+Power+Adapter+and+Cable
Also sold at Amazon
https://www.amazon.com/ASUS-Charger-Zenfone2-T100CHI-Retail-packaging/dp/B00XR0FBYK
It would be nice to remove the red light when the phone is charging. Maybe it's something that can only be removed after rooting?

pacattack81 said:
I can also confirm fast charging doesn't work with my QC 2.0 charger. Interesting thing to note is it outputs 5V - 2A and 9V -2A. My guess is this charger from Asus that fast charges the Zenfone 2 would work on our phones because it has the same outputs if you read the description. It's worth a shot and you could always return it to Amazon if it doesn't work.
http://store.asus.com/us/item/20150...nFone+2+&+T100CHI+18W+Power+Adapter+and+Cable
Also sold at Amazon
https://www.amazon.com/ASUS-Charger-Zenfone2-T100CHI-Retail-packaging/dp/B00XR0FBYK
It would be nice to remove the red light when the phone is charging. Maybe it's something that can only be removed after rooting?
Click to expand...
Click to collapse
Unfortunately, even though the charger referenced above has the same outputs it doesn't fast charge. Seems you can only fast charge with the included charger. At least we can use our own charging cable. If anyone gets another charger to fast charge the device let us know. It doesn't appear Asus sells the included charger on it's webpage yet.

Not allowing the standard quickcharge charger to work forces people to once again purchase / replace current QC chargers.
One tick to the CONs side of the evaluation.

ewingr said:
Not allowing the standard quickcharge charger to work forces people to once again purchase / replace current QC chargers.
One tick to the CONs side of the evaluation.
Click to expand...
Click to collapse
At this moment, I don't really think it's a CON side...
The quality of all those QC2.x/3.x charger are not even today (may get better in future, however I really doubt those cheap, knock-off charger from China). Some are good, some are outright bad. QC is quite sensitive with the voltage/current delivered by the charger (it's by design of QC, I believe) and not optimum voltage/current will shorten the battery life at best, create danger at worst scenario.
LiPo battery is really not designed to be charged in high speed. The associated temperature issues needs to be check very carefully and charge current needs to be controlled strictly to avoid dangerous thermal runaway. It cannot only be done by phone itself and need co-work from adaptor (switching voltage, for instance.) Thus an adaptor which have good communication with phone is a safety requirement as far as QC is concerned.

Same with me. I bought a wall charger aukey PA-16 and a car charger Aukey CC-T8. Using the ampere APP, The original zenfone charger gets 2800 mAh. And the aukey chargers up to 1300 mAh.

K6 charger also does not enable Quick Charge function on 570KL
Input type: 100-240V 50-60Hz 0.5A - Quick charge 3.0 output: 3.6V-6.5V-3A/6.5V-9V-2A/9V-12V-1.5A - Power: 18W

I am wondering if someone achieved any solution to remove OEM charger lock to use fast charge with third party Qualcomm Certified Chargers/Power Banks?

Sorry to resume this thread but i lost my oem charger and id like to get one that works with the zenfone 3 deluxe and quickcharge. Can anyone post a link where i can buy it or maybe the model number of the charger? The EU version would be nice.
Thanks

Any solution to the original question?
pacattack81 said:
I can also confirm fast charging doesn't work with my QC 2.0 charger. Interesting thing to note is it outputs 5V - 2A and 9V -2A. My guess is this charger from Asus that fast charges the Zenfone 2 would work on our phones because it has the same outputs if you read the description. It's worth a shot and you could always return it to Amazon if it doesn't work.
http://store.asus.com/us/item/20150...nFone+2+&+T100CHI+18W+Power+Adapter+and+Cable
Also sold at Amazon
https://www.amazon.com/ASUS-Charger-Zenfone2-T100CHI-Retail-packaging/dp/B00XR0FBYK
It would be nice to remove the red light when the phone is charging. Maybe it's something that can only be removed after rooting?
Click to expand...
Click to collapse
ASUS locked the fast charge function to the OEM QC 2.0 charger that comes with the phone (it will NOT work even with other ASUS QC 2.0 - or 3.0 - chargers, only with the specific type/"model" that came with the phone). Therefore we don't get QC3.0 - as advertised - at all. The QC3.0 compatibility with 3rd party chargers, powerbanks and car chargers was disabled with one of the updates, I think it was the Android 7.0 Update (that replaced Android 6.0) that removed QC3 compatibility. So... any ideas how to re-enable the QC 3.0 functionality?

Quick charge was disabled for other chargers from day one. I'm still on marshmallow (Android 6.0) and only the charger that came with the phone works with quick charge.

2.4A Charger??

Hello xda,
I've recently bought a 2.4A 5V charger for my tablet. I don't know the current ratings for this tablet. So is it safe to use the 2.4A output of the charger? It has the original battery on it.

I use one regularly.
aymat said:
Hello xda,
I've recently bought a 2.4A 5V charger for my tablet. I don't know the current ratings for this tablet. So is it safe to use the 2.4A output of the charger? It has the original battery on it.
Click to expand...
Click to collapse
I use one all the time as otherwise it takes 'forever' to charge my P605. It still takes quite awhile but probably two times faster than a 1A charger. I think the Note limits the input voltage to some extent.
Linuxmon

Linuxmon said:
I use one all the time as otherwise it takes 'forever' to charge my P605. It still takes quite awhile but probably two times faster than a 1A charger. I think the Note limits the input voltage to some extent.
Linuxmon
Click to expand...
Click to collapse
Thank you for your reply. I've measured the currents while charging my tablet. When I use 2.4A output it is drawing around 300mA current which is nonsense. I think there is a compatibility problem with the adapter and the tablet. However when I use the 1A output it directly draws a stable 1A current. Now I am using this output to charge my phone and my phone's adapter to charge my tablet, which gives 1.3A. My phone is note 2.
So my problem is solved. Again thank you for replying

aymat said:
Thank you for your reply. I've measured the currents while charging my tablet. When I use 2.4A output it is drawing around 300mA current which is nonsense. I think there is a compatibility problem with the adapter and the tablet. However when I use the 1A output it directly draws a stable 1A current. Now I am using this output to charge my phone and my phone's adapter to charge my tablet, which gives 1.3A. My phone is note 2.
So my problem is solved. Again thank you for replying
Click to expand...
Click to collapse
I'm using a RaVpower iSmart which has a 5V/2.4A and a 5V/3.0A port. the 3A port is very slow to charge but the iSmart 2.4A charges faster. I guess it may be the charger type, sensing/negotiating the maximum battery charge rate correctly could be the difference. Wish I had a way to test that theory.
Linuxmon

how to get more speed charging?

hi guys,
i have two chargers,
1. output 9.0V 1.67A or 5.0V 2.0A
2. output 5.2V 2.4A
and a usb-c cable, in the cable box i find that this cable is supporting for fast charging and support to 2.4A but when i tried it with the two chargers, and test it using 'ampere' app i got max to 1010mA with both chargers adapter ! even with this value i feel it charging my mobile quickly, and in the bottom of the lock screen i see 'charging rapidly' but i want more and why the phone is not charged depending on the values in the chargers (1.67A - 2.0A - 2.4A) and cable (2.4A)

The P2XL charger is 9V, 2A or 5V, 3A. Your amperage values are too low, which may explain why you're not charging as quickly as you should be. The solution: get a charger that equals or exceeds the stock charger ratings.

You realize slow charging is better for the long-term life of the battery, right?

sublimaze said:
You realize slow charging is better for the long-term life of the battery, right?
Click to expand...
Click to collapse
Considering we often get new phones every 2-3 years, you won't see much of a degradation from rapid/fast charging.
Rather, you'll see a degradation from charging from <15% to 100% (which people do often). That will be a more significant reason someones battery will lose much off its lifespan.
I wish Android would have a built in limiter. I'm sure in the next few years, both iOS and Android will.

Strephon Alkhalikoi said:
The P2XL charger is 9V, 2A or 5V, 3A. Your amperage values are too low, which may explain why you're not charging as quickly as you should be. The solution: get a charger that equals or exceeds the stock charger ratings.
Click to expand...
Click to collapse
hi friend,
i bought an original charger for my pixel 2 xl from ebay https://www.ebay.com/itm/113109823570 and after testing it with ampere app i got the same value as my old charger, i got max 1010 mA, and i don't feel that there is a fast charging, it needs to the same time to charge my mobile as my old charger !
please help

Strephon Alkhalikoi said:
The P2XL charger is 9V, 2A or 5V, 3A. Your amperage values are too low, which may explain why you're not charging as quickly as you should be. The solution: get a charger that equals or exceeds the stock charger ratings.
Click to expand...
Click to collapse
After seeing this I checked accubattery and it also says mine normally charges between 700 - 1010 mah also. I didn't even think about fast charging, I don't have the original charger but I have other "fast chargers" that don't seem to be doing their job either.

Chouiyekh said:
hi friend,
i bought an original charger for my pixel 2 xl from ebay https://www.ebay.com/itm/113109823570 and after testing it with ampere app i got the same value as my old charger, i got max 1010 mA, and i don't feel that there is a fast charging, it needs to the same time to charge my mobile as my old charger !
please help
Click to expand...
Click to collapse
tbkrazeey said:
After seeing this I checked accubattery and it also says mine normally charges between 700 - 1010 mah also. I didn't even think about fast charging, I don't have the original charger but I have other "fast chargers" that don't seem to be doing their job either.
Click to expand...
Click to collapse
There's nothing I can help you guys with. All I can tell you is what ratings your charger should have, based upon the information printed on the pair of chargers I received with my device when I purchased it directly from Google. If you have a genuine Google charger and the P2XL is still not charging fast, contact Google.

stuff said:
Considering we often get new phones every 2-3 years, you won't see much of a degradation from rapid/fast charging.
Rather, you'll see a degradation from charging from <15% to 100% (which people do often). That will be a more significant reason someones battery will lose much off its lifespan.
I wish Android would have a built in limiter. I'm sure in the next few years, both iOS and Android will.
Click to expand...
Click to collapse
Unfortunately, i hope someone could help

Chouiyekh said:
hi friend,
i bought an original charger for my pixel 2 xl from ebay https://www.ebay.com/itm/113109823570 and after testing it with ampere app i got the same value as my old charger, i got max 1010 mA, and i don't feel that there is a fast charging, it needs to the same time to charge my mobile as my old charger !
please help
Click to expand...
Click to collapse
I thought that charging capped out at roughly 1000 mA when the screen is on to protect the battery from overheating/putting too much strain on it. Which could lead to degradation of the battery. That would explain why you only see 1010 mA on Ampere - because the screen is on. I don't think Ampere measures while the screen is off, so it is difficult to say what value it would be giving you.
That is my experience even using the stock charger that came with the phone.

pemz82 said:
I thought that charging capped out at roughly 1000 mA when the screen is on to protect the battery from overheating/putting too much strain on it. Which could lead to degradation of the battery. That would explain why you only see 1010 mA on Ampere - because the screen is on. I don't think Ampere measures while the screen is off, so it is difficult to say what value it would be giving you.
That is my experience even using the stock charger that came with the phone.
Click to expand...
Click to collapse
maybe your opinion is right. my next experiment is from 0% to 100% with the old charger and with the stock charger, then i will see if there is a difference

tbkrazeey said:
After seeing this I checked accubattery and it also says mine normally charges between 700 - 1010 mah also. I didn't even think about fast charging, I don't have the original charger but I have other "fast chargers" that don't seem to be doing their job either.
Click to expand...
Click to collapse
There is one other thing that you must also have. The Pixel does NOT support Qualcomm Fast Charging. It uses Power Delivery, not Quickcharge Technology. So if you have a charger that is labeled QuickCharge or a Moto Turbo Charger you will NOT get fast charging from these units. It has to be a Power Delivery charger with a USB C port and the cable must be USB-IF certified. If you don't have all of that then you don't get a fast charge.

nlinecomputers said:
There is one other thing that you must also have. The Pixel does NOT support Qualcomm Fast Charging. It uses Power Delivery, not Quickcharge Technology. So if you have a charger that is labeled QuickCharge or a Moto Turbo Charger you will NOT get fast charging from these units. It has to be a Power Delivery charger with a USB C port and the cable must be USB-IF certified. If you don't have all of that then you don't get a fast charge.
Click to expand...
Click to collapse
That makes sense then, it seems like everything gets more complicated every year.

I just purchased one of these from Amazon. Note that it supports Power Delivery 3.0. This unit quick charges my phone. The Moto Charger I have for my old Moto G5+ which is a Qualcomm charger will charge the phone but only at slow speeds.
https://www.amazon.com/gp/product/B07H6BQNGF/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1

nlinecomputers said:
There is one other thing that you must also have. The Pixel does NOT support Qualcomm Fast Charging. It uses Power Delivery, not Quickcharge Technology. So if you have a charger that is labeled QuickCharge or a Moto Turbo Charger you will NOT get fast charging from these units. It has to be a Power Delivery charger with a USB C port and the cable must be USB-IF certified. If you don't have all of that then you don't get a fast charge.
Click to expand...
Click to collapse
i bought this : http://www.ebay.com/itm/113109823570
what do you think ?

If it is really the OEM parts that will work. The pictures look like mine, but ya know eBay....