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Hi there,
I have tried just about everything to get my rapid charging working from the Nexus 6p. I am not quite sure what happened or what caused the device to not have the ability to rapid charge, but when i plug my original Huawei wall charger and cable sitting at 15-20% it reads "charging" only.
It used to indicate for me rapid charging where i was able to get a substantial amount of battery over a short period.
To investigate further, i plugged it into the wall and phone and booted up Ampere with the following results:
Min: 1200 mA and Max: 1250 mA
Status: Charging
Plugged: AC Charger
Level: 26%
Health: Good
Tech: Li-ion
Temp: 33.5
Voltage: 3.954 V
Max USB Current: 1500 ma?!?
The rest of the information such as build is in the title block, the latest and greatest from google with June patch updates.
Now the question i have given the information above is why am i a max current of 1500 ma and for the life of me don't understand why i am not rapid charging anymore. I cannot get over 1250mA when looking through Ampere for the charging of my phone and it always states its going to take 2+ hours to charge from around this time.
Can anyone point me in the right direction as to what is going on? I am pulling my hair out about this and need to send the phone out for repair through the carrier if need be, a two week process and the reason i wanted to exhaust some help here first.
Note: i have already tried a new car charger and still get the same result along with a new USB C cable. I have just picked up a new wall charger from the local carrier store to borrow for the night to troubleshoot which is the original charger from Huawei.
Ive never seen it say "rapid charging " yet , is that what its supposed to say?
Sent from my Nexus 6P using XDA-Developers mobile app
Yes it does. During charging, in the lock screen.
Ahh, i never ever looked ill check it out, what the average time of charge with ralid charging and if it doesnt show where do i look.for answers? Build.prop?
Sent from my Nexus 6P using XDA-Developers mobile app
Again, the lockscreen shows the estimated time it takes to reach 100%.
Hi all,
I am not sure actually what is going on because the new car charger or supplied wall charger is not working to achieve rapid charging.
I on the latest build and am wondering if it has something to do with software. I used a friend's phone recently and he was not fully updated only to see the max USB charge to be 1800 instead of 1500.
Any help? Do you guys actually get rapid charging? What is the result in the ampere? I ordered another charger from Google but the supplied charger and cable is only getting 1300 max.
Should I return the device?
Did you ever solve this issue? I have the exact and problem. I wiped everything and it solved the problem but now after about 10 days I'm having the issue when.
Sent from my Nexus 6P using XDA-Developers mobile app
i heard the battery get totally broken after one year of using the original 25W charger , what is ur experiences ? does ur phone over heat too when charging does it get to 50-60 C degrees?
I've been charging mine with the turbo charger since day one, it's been fine. There is technology built in to monitor the battery temps and ramp down the charge speed as the battery gets full. I've had my phone for 16 months now.
Max temp I get is 42-44c
Sent from my XT1580 Hammer using Tapatalk
same here : 15 months with my MXF the 25w turbo2 charger.
Battery never go over 45° in charge, battery life still as good as the first day
In my car I have the Moto 25w charger. With navigation and other apps running the temperature rises to about 46 degrees. At this point the charge rate drops. Only if my telephone is at the cool air and out of its cover does the charging rate remain at the full turbo charge rate
Sent from my XT1580 Hammer using Tapatalk
Alimataei said:
i heard the battery get totally broken after one year of using the original 25W charger , what is ur experiences ? does ur phone over heat too when charging does it get to 50-60 C degrees?
Click to expand...
Click to collapse
Not so much that the battery fails. The connector (which is kind of crucial for QC 2.0/3.0) or the charge controller craps out. Battery's fine. Was fine when I did my swap out for charge failure. It's not the battery, which people incorrectly presume is the problem- the charge system is a feedback loop process running in the background while the OS is running. When you're dead, down, no charge in the battery, the device only draws USB 2.0 power levels, 500mA, until the OS can come up enough to manage the charging. Part of the reason they do this is because you're using a USB connection to charge with and unless you've got the 1.5 A USB charge slot or an AC charger with the ability to source up to 2.4 A of juice, trying to pull that much current will wipe your USB port on a PC/Laptop/etc OUT. This is just with traditional charging. Turbo/QuickCharge charging is about raising the voltages over the USB 2.0 lines on a cable to up to 12v as opposed to 5, to allow you to jam a bit more current through the lines and to the device, effectively doubling the power being fed to the charge system. Problem with that is that you REALLY need the OS up and running to manage that. It requires info from the Charge Controller chip that is handshook from the charger.
If your charge controller is damaged, or if the cable doesn't have clean data and power lines, it just simply WON'T WORK. It will just USB mode charge until you fix the "problem"- either of which requires Lenovo to re-work the board...if it's even possible to fix. USB charging takes forever with this class of device- because the battery is a huge tank of juice compared to the devices of old. So it "looks" like the battery got "broke".
Having said this, there's about 20-40% of the units out there, depending on the crowd you listen to, that have a defective charge controller system and the phone flat-out won't ever go into any mode other than USB.
Kenzo and it's development is now not new and QC on kenzo is also not new today am creating a new thread to clarify all those doubts regarding QC on kenzo
Well below are a genuine practical test made by me.
Am 24×7 available (I will try to be ??) and will answer all question and doubts regarding this.. (I feel now am the master on QC 2.0 on kenzo ??)
Start reading (I am using Pure Nexus and Franco kernel)
Well I did complete my intensive research as well as my own experiments... So here are my results regarding QC on Snapdragon.650. and Franco kernel...
First of all the kernel do support QC 2.0 (? I know we all know that but still for noobs)
Now most important RN3 PRO also support QC 2.0 the circuit, the processor and the battery do support QC 2.0
(It's a 100% confirmed fact)
But the charger and the software does not...
So some tweaking enables it ... Definitely Yes!!!
But as every coin has 2 sides.. This too has..
Read on what I did to come to this conclusion..
Well I went out in the market bought couple of quick chargers ...2 quick chargers borrowed ( I know I don't have to mention it but I have to write something ??...Please tolerate me) ...
Well these were
1) One Plus dash charger
2) Pixel XL fast charger
3)Moto G5 plus turbo charger
4)Le Eco Le Pro 3 quick charger
The test conditions were
AC on for an hour at 24℃... The room temperature was 23℃ .. I am on Pure Nexus .. All apps were closed.. Data wifi auto rotation...Sync.. Location Bluetooth etc..All off
The device temperature was 32℃ and I had a sponge soaked lightly in water....
I made sure the temperature was not high as high temperature causes the quick charging go off so that your phone don't become GALAXY S7 (?? I find this line funny)...
Now I did use all the chargers 1 by 1 and the phone was started charging from 3%
1st- The One Plus charger
It took me exactly 2hr 23min to charge that thing with a dash charger (I know it's USB TYPE C I just slashed the end and attached a normal cable...I think that might change the rate..) now I had a check on voltage and the phone started with 3.6V and then rapidly It went up to 5V in just span of 4mins !!!!! But then after 20 mins again back to 4.0V and at this moment the temperature was 45℃......
2nd - Pixel XL charger
It took me exactly 2hr 12min to charge from 3% to 100%
Now this time the phone started from 3.8V and went up to 4.6V in just 4min.. and after 15mins it went to 8V....And after 23min It was on 11V.. Interestingly temperature was at 41℃ ... But then after 28min the rate went down to 3.9V!!! (I thought it would have went to 100 in 1hr 50mins..But ....No)
3rd-Moto G5 plus turbo charger
Well this time I didn't expect good results but I was shocked..
Well the phone went from 3% to 100% in 2hr 18min!!!! Wow...
It started with 3.8V and raced up to 4.4V in 6mins
Then 7V in 26mins and full 12V in 34mins ... but this time the temperature was 47℃ and again the rate slowed down..I had to turn the charger off as I don't like a GALAXY S7 (?????)
4th- Final Le Pro 3
I expected some good results and the results were really pleasing this time I used a converter
It went from 3% to 100% in 1hr 58mins !!!!!!! Well I don't know how the rate started from 3.9V then 4.2V in mins then 5.2V in 17mims then 9.6V in 26min and 12V in 34min and this 12V was constant form around 8mins!!! Well this time I cheated ...I reduced AC to 20℃ soaked the sponge with chilled water and place the phone between Ice bags (I took care guys .I didnt place the phone touching the ice bags ?? I have some sense)
Well the temperature of phone was 45℃ ...But rate never reduced
Disclaimer- I didnt use and voltmeter....It was Pure Nexus stock charging info... And the time results are genuine...I did use a stopwatch and the times mention are completely original.. Apologies if I gave some wrong info with half knowledge.The phone do support QC but It's not good for the health of that beast....I mean 45℃+ is not a comfortable rate and moreover the rate was never steady as temperature matters... So I think it comes in handy at times but I prefer stock charger
One more thing the QC sign in MIUI beta version is true ...It is QC sign as per MIUI moderators...But they say it don't support stock charging though the symbol appears...If you need some more assistance am here.
Cya.. Chao ?
Well if You need a similar experiment with stock charger tell me
I appreciate that you took the time to benchmark different chargers, but that was really painful to read, why are there so many goddamn emojis? You should also have tested the supplied charger, as a control and a run of the mill 1A charger that everyone has lying around the house. I don't know if those times or temps are any good if i don't have a reference.
cat4443 said:
I was thinking that I am not getting quick charge but after seeing your results that I am able to charge my phone from 5% to 100 % on quick chanrge 2.0 adapter in 2 hr and 10- 20 min
Click to expand...
Click to collapse
Osga21 said:
I appreciate that you took the time to benchmark different chargers, but that was really painful to read, why are there so many goddamn emojis? You should also have tested the supplied charger, as a control and a run of the mill 1A charger that everyone has lying around the house. I don't know if those times or temps are any good if i don't have a reference.
Click to expand...
Click to collapse
Well sorry for those emojis...I used them to make sure no one gets bored off. It shows I have a poor sense of humour..?..Leave that I made a poll regarding stock charger ..So if majority needs I will do some more work with supplied charger too
cat4443 said:
Kenzo and it's development is now not new and QC on kenzo is also not new today am creating a new thread to clarify all those doubts regarding QC on kenzo
Well below are a genuine practical test made by me.
Am 24×7 available (I will try to be [emoji23][emoji23]) and will answer all question and doubts regarding this.. (I feel now am the master on QC 2.0 on kenzo [emoji23][emoji23])
Start reading (I am using Pure Nexus and Franco kernel)
Well I did complete my intensive research as well as my own experiments... So here are my results regarding QC on Snapdragon.650. and Franco kernel...
First of all the kernel do support QC 2.0 ([emoji23] I know we all know that but still for noobs)
Now most important RN3 PRO also support QC 2.0 the circuit, the processor and the battery do support QC 2.0
(It's a 100% confirmed fact)
But the charger and the software does not...
So some tweaking enables it ... Definitely Yes!!!
But as every coin has 2 sides.. This too has..
Read on what I did to come to this conclusion..
Well I went out in the market bought couple of quick chargers ...2 quick chargers borrowed ( I know I don't have to mention it but I have to write something [emoji23][emoji23]...Please tolerate me) ...
Well these were
1) One Plus dash charger
2) Pixel XL fast charger
3)Moto G5 plus turbo charger
4)Le Eco Le Pro 3 quick charger
The test conditions were
AC on for an hour at 24℃... The room temperature was 23℃ .. I am on Pure Nexus .. All apps were closed.. Data wifi auto rotation...Sync.. Location Bluetooth etc..All off
The device temperature was 32℃ and I had a sponge soaked lightly in water....
I made sure the temperature was not high as high temperature causes the quick charging go off so that your phone don't become GALAXY S7 ([emoji23][emoji23] I find this line funny)...
Now I did use all the chargers 1 by 1 and the phone was started charging from 3%
1st- The One Plus charger
It took me exactly 2hr 23min to charge that thing with a dash charger (I know it's USB TYPE C I just slashed the end and attached a normal cable...I think that might change the rate..) now I had a check on voltage and the phone started with 3.6V and then rapidly It went up to 5V in just span of 4mins !!!!! But then after 20 mins again back to 4.0V and at this moment the temperature was 45℃......
2nd - Pixel XL charger
It took me exactly 2hr 12min to charge from 3% to 100%
Now this time the phone started from 3.8V and went up to 4.6V in just 4min.. and after 15mins it went to 8V....And after 23min It was on 11V.. Interestingly temperature was at 41℃ ... But then after 28min the rate went down to 3.9V!!! (I thought it would have went to 100 in 1hr 50mins..But ....No)
3rd-Moto G5 plus turbo charger
Well this time I didn't expect good results but I was shocked..
Well the phone went from 3% to 100% in 2hr 18min!!!! Wow...
It started with 3.8V and raced up to 4.4V in 6mins
Then 7V in 26mins and full 12V in 34mins ... but this time the temperature was 47℃ and again the rate slowed down..I had to turn the charger off as I don't like a GALAXY S7 ([emoji23][emoji23][emoji23][emoji23][emoji23])
4th- Final Le Pro 3
I expected some good results and the results were really pleasing this time I used a converter
It went from 3% to 100% in 1hr 58mins !!!!!!! Well I don't know how the rate started from 3.9V then 4.2V in mins then 5.2V in 17mims then 9.6V in 26min and 12V in 34min and this 12V was constant form around 8mins!!! Well this time I cheated ...I reduced AC to 20℃ soaked the sponge with chilled water and place the phone between Ice bags (I took care guys .I didnt place the phone touching the ice bags [emoji23][emoji23] I have some sense)
Well the temperature of phone was 45℃ ...But rate never reduced
Disclaimer- I didnt use and voltmeter....It was Pure Nexus stock charging info... And the time results are genuine...I did use a stopwatch and the times mention are completely original.. Apologies if I gave some wrong info with half knowledge.The phone do support QC but It's not good for the health of that beast....I mean 45℃+ is not a comfortable rate and moreover the rate was never steady as temperature matters... So I think it comes in handy at times but I prefer stock charger
One more thing the QC sign in MIUI beta version is true ...It is QC sign as per MIUI moderators...But they say it don't support stock charging though the symbol appears...If you need some more assistance am here.
Cya.. Chao [emoji41]
Well if You need a similar experiment with stock charger tell me
Click to expand...
Click to collapse
Great info. And loved your humor throughout! Kept me entertained! Keep it up, mate! [emoji41][emoji51]
Sent from my Redmi Note 3 using Tapatalk
did the Zener diodes on the charging plate and the motherboard not burn?
Many call it protection diodes but they are actually zeners to stabilize the output voltage at 5V. many have burned these zerner diodes when connecting chargers QC3.0
I have read from various sources about the Leeco 727 dying a premature death due to burn out of the charger port. Some theories attribute it to bad Leeco supplied charging adapter or cable or faulty motherboard.
I tried a bunch of different wall adapters and cables to see if I could make some sense of it. What I noticed is that only with the Leeco supplied unit and an Anker dual port unit do I get any semblance of fast charging. There is no indicator on screen. I can only go by time observation.
Charging with other fast charge adapters seem to charge at a slower pace at 5 volt. From what I can see using a USB port tester is that when something charges at fast charge, it charges at 9 volt. I used a Samsung adapter and one from an orbic wonder which are definitely fast charge capable. They charge my old Motorola G4 at "turbo power" and a Note 4 at "fast charge".
I bought a unit from Allmaybe that has visual lcd of power consumption and it clocked down to a lower voltage after tripping the overpower indicator.
Maybe we need to throw away the Leeco wall adapter. It's possible that either it or the phone is drawing too much electricity for the port to handle.
tekweezle said:
I have read from various sources about the Leeco 727 dying a premature death due to burn out of the charger port. Some theories attribute it to bad Leeco supplied charging adapter or cable or faulty motherboard.
I tried a bunch of different wall adapters and cables to see if I could make some sense of it. What I noticed is that only with the Leeco supplied unit and an Anker dual port unit do I get any semblance of fast charging. There is no indicator on screen. I can only go by time observation.
Charging with other fast charge adapters seem to charge at a slower pace at 5 volt. From what I can see using a USB port tester is that when something charges at fast charge, it charges at 9 volt. I used a Samsung adapter and one from an orbic wonder which are definitely fast charge capable. They charge my old Motorola G4 at "turbo power" and a Note 4 at "fast charge".
I bought a unit from Allmaybe that has visual lcd of power consumption and it clocked down to a lower voltage after tripping the overpower indicator.
Maybe we need to throw away the Leeco wall adapter. It's possible that either it or the phone is drawing too much electricity for the port to handle.
Click to expand...
Click to collapse
Their threads on this.
Sent from my LEX727 using xda premium
A device like yhis Xdragon USB voltmeter might be helpful in debugging issues with charging.
Right now I am connected to a Samsung adaptive fast charger that can pull 9 volts but currently just pulling in 4.78 volts and about 700 mAh. At that rate will take about 5 to 6 hours to fully charge the 4200 mAh battery in the Leeco
tekweezle said:
I have read from various sources about the Leeco 727 dying a premature death due to burn out of the charger port. Some theories attribute it to bad Leeco supplied charging adapter or cable or faulty motherboard.
I tried a bunch of different wall adapters and cables to see if I could make some sense of it. What I noticed is that only with the Leeco supplied unit and an Anker dual port unit do I get any semblance of fast charging. There is no indicator on screen. I can only go by time observation.
Charging with other fast charge adapters seem to charge at a slower pace at 5 volt. From what I can see using a USB port tester is that when something charges at fast charge, it charges at 9 volt. I used a Samsung adapter and one from an orbic wonder which are definitely fast charge capable. They charge my old Motorola G4 at "turbo power" and a Note 4 at "fast charge".
I bought a unit from Allmaybe that has visual lcd of power consumption and it clocked down to a lower voltage after tripping the overpower indicator.
Maybe we need to throw away the Leeco wall adapter. It's possible that either it or the phone is drawing too much electricity for the port to handle.
Click to expand...
Click to collapse
The charger is fine, it was built according to qualcomm specs: https://www.qualcomm.com/media/documents/files/quick-charge-device-list.pdf
The Issue is that alot of phones were sent out with bad cables.
I don't think that it's just the cable.
I have been seeing hard shut downs while charging at night. It's not consistent so I am just going slow I suspect that the phone is shutting off to prevent overcharging the battery.
I have 2 x727 with asop extended 8.1 and blackscreen kernel 4.9 installed
I replaced the original LeEco USB C cable with a genuine Samsung USB C cable per the recommendation of other threads. "no change still shut down while charging overnight"
I suspect that it is a kernel battery issue so I backed up in twrp and I installed the regular version 4.9 of the blackscreen kernel. "no change the phone is still shutdown occasionally while charging overnight on a original leeco charger with a Samsung USB C cable"
So now I am trying both a Samsung charger and Samsung cable. I should revert back to the twrp kernel backup but blackscreen kernel is just too awesome!
The Samsung charger only outputs at 5.3V @ 2.0A
The LeEco charger outputs at 3.6v to 8v @ 3.0A or 12v @ 2.0A
I'm pretty sure that the problem is a software issue with the quick charge 3.0 voltage controls in the rom itself but I haven't gotten a log of the shutdown yet to confirm that because I haven't rooted the phone. The phone was getting uncomfortably warm when charging.
I'm betting that with the Samsung Oem quick charge 2.0 charger the phone will work properly without shutting down overnight.
I'll update this post with my results.
dlradlt said:
I have been seeing hard shut downs while charging at night. It's not consistent so I am just going slow I suspect that the phone is shutting off to prevent overcharging the battery.
I have 2 x727 with asop extended 8.1 and blackscreen kernel 4.9 installed
I replaced the original LeEco USB C cable with a genuine Samsung USB C cable per the recommendation of other threads. "no change still shut down while charging overnight"
I suspect that it is a kernel battery issue so I backed up in twrp and I installed the regular version 4.9 of the blackscreen kernel. "no change the phone is still shutdown occasionally while charging overnight on a original leeco charger with a Samsung USB C cable"
So now I am trying both a Samsung charger and Samsung cable. I should revert back to the twrp kernel backup but blackscreen kernel is just too awesome!
The Samsung charger only outputs at 5.3V @ 2.0A
The LeEco charger outputs at 3.6v to 8v @ 3.0A or 12v @ 2.0A
I'm pretty sure that the problem is a software issue with the quick charge 3.0 voltage controls in the rom itself but I haven't gotten a log of the shutdown yet to confirm that because I haven't rooted the phone. The phone was getting uncomfortably warm when charging.
I'm betting that with the Samsung Oem quick charge 2.0 charger the phone will work properly without shutting down overnight.
I'll update this post with my results.
Click to expand...
Click to collapse
Have you tried simply reflashing the correct firmware?
I too have a X727 and had similar issues in the past while using a firmware designed for the X720, and alot of of Rom's come with the X720 firmware.
Try flashing the kernel from my Google Drive link below and see if that helps.
https://drive.google.com/open?id=1qAJrM8bIfI190W9w2gKR97xVhA-2lrZt
Meh 2 phones same software with different results.
I still don't really know why it was shutting off while charging overnight.
But the problem hasn't repeated itself since I stopped using one of the LeEco chargers. So at the moment I am blaming it on a bad charger base or wonky phone charging circuit, not the cable.
I was thinking my problem was software but I had already changed my roms Kernel to the appropriate blackscreen kernel from the roms stock kernel and the problem persisted on her phone until I stopped using the one included LeEco charger on my wife's phone, it's charging fine on the Samsung 2.0 quick charger, and mines charging without issues on the second LeEco 3.0 quick charger.
Unfortunately I can't just wipe her phone without causing her problems because she is always on her phone.
Is the problem hardware related in her phone is my current question? Or am I tracking a bug in the software.
If the problem is that charger base it should have zero effect if I put her phone on the 3.0 charger that I am using. If it is her phones charging hardware that test could permanently brick the phone Fry the charge port or battery ect...
So I am going to order another x727 if I can find another new one on ebay apparently most of the new US inventory is gone and the price is being gouged on the last of the new ones. :crying:
That way I will have a backup so I can do that test and have a phone to use for development. That's why I bought this phone in the first place.
I'm pretty sure that the one charger base is the whole problem but I can't afford to test that theory yet.
dlradlt said:
I still don't really know why it was shutting off while charging overnight.
But the problem hasn't repeated itself since I stopped using one of the LeEco chargers. So at the moment I am blaming it on a bad charger base or wonky phone charging circuit, not the cable.
I was thinking my problem was software but I had already changed my roms Kernel to the appropriate blackscreen kernel from the roms stock kernel and the problem persisted on her phone until I stopped using the one included LeEco charger on my wife's phone, it's charging fine on the Samsung 2.0 quick charger, and mines charging without issues on the second LeEco 3.0 quick charger.
Unfortunately I can't just wipe her phone without causing her problems because she is always on her phone.
Is the problem hardware related in her phone is my current question? Or am I tracking a bug in the software.
If the problem is that charger base it should have zero effect if I put her phone on the 3.0 charger that I am using. If it is her phones charging hardware that test could permanently brick the phone Fry the charge port or battery ect...
So I am going to order another x727 if I can find another new one on ebay apparently most of the new US inventory is gone and the price is being gouged on the last of the new ones. :crying:
That way I will have a backup so I can do that test and have a phone to use for development. That's why I bought this phone in the first place.
I'm pretty sure that the one charger base is the whole problem but I can't afford to test that theory yet.
Click to expand...
Click to collapse
You can buy usb voltage testers on Amazon.
If you happen to have a bad charging block just toss it, and buy a universally compatible Qualcomm Quick Charger. Such as this one: https://www.amazon.com/Charge-Anker-Charger-Compatible-PowerPort/dp/B016LO811S
Blitzwolf quickcharger and C cables. Bought 3 of each. All my charging issues disappeared when I bought them. Leeco supplied cable/charger are crap, why risk it?
FYI, I have experienced the condition where my charging stops randomly when using 2 different decent Samsung Travel model fast chargers. Stopped around 49% to 85%
Neither pulled in fast charging voltage-drawing a little under 5 volts and maybe 1100mah, as compared to 9 volts when connected to the Leeco charger.
Good point. Charger blocks are cheap phones aren't.
As addendum to this issue, after a year and half my charger port finally burned out. Probably abused the phone a bit and got some moisture in the port, maybe it was just a matter of time.
I was able to resurrect the phone though. The actual replacement board is available on eBay for $5-10 with tools. Hardest part was using a heat gun to remove the screen. There are guide on how to open up this unit.
One thing I will tell you I am that you don't need to remove the battery to get to the USB board.
Just another note, either hitting my phone with the heat gun or mucking around with the battery unnecessarily caused the battery to start to malfunction. Battery would discharge quickly and phone would shut off randomly. I replaced the battery with some cheap replacement from China, cost about $16.
Also replaced the screen because I tore the ribbon cable by accident. The screen cost about $13. Definitely cheaper than an iPhone replacement!
So, I have finally learned what in my charger makes it fast. It uses the 5V and not the 9V, not sure why there's a 9V if phones use a 5V but I learned that the more amps the faster the charging. Like I currently have a ZTE 1.5A charger and a friend has a 4A dash charger for their OP3. Mine takes over an hour and their's takes a hour at most they claim. So if the V20 supports 3.0 charging, what's the most amps I can use in a charger to get the fastest charging possible? Would it be unsafe if I went to some extreme amount, like would it make my phone over charge and blow up or something?
The total power charged (watts) = voltage x amperage. So its a function of both volts and amps. For the fastest charging get a charger that supports qc3. This is standard that includes both how fast to charge and a signature that the phone and charger support qc3 to actually use the faster charging.
If you get a charger that doesn't support quick charge but some other standard the phone and charger will see that they don't support that other charging standard and charge at a safe slow rate.
The V20 does not support QuickCharge 3.0, that needs to be clear from the start because it causes a lot of confusion. The Snapdragon 820 does have support for the QC 3.0 standard, but LG chose for some reason NOT to support it. What the V20 does support is USB-PD aka Power Delivery which is similar to QC 3.0 in how it operates but it is NOT QC 3.0 (but the V20 does support QC 2.0 without issues with the stock charger).
USB-PD works like QC 3.0 in the sense that it does the charging in a different way that keeps the cells cooler during the charging process and doesn't cause the heat buildup that QC 2.0 causes. The factory LG V20 charger supports QC 2.0 and if you go into the hidden menu (*#546368*<3-digit model number>#, might not work on every variant) and then SVC Menu - Battery Test - Battery Info - select the Enable Log button - check the box for Battery Log Save On/Off and it will then show the relevant info. Once you see the information display, plug in whatever charger you wish and then wait and see what it shows for High Voltage parameter.
If it's QuickCharge it will show the version being used - the stock V20 charger shows me QC2 so that's QuickCharge 2.0. I have a Samsung QC 3.0 compatible charger and when that's attached it shows USB-DCP which from what I understand is Samsung's modified variant of USB-PD but that could be wrong. I did some quick research and found this so it could be limiting the charging to 1.5A which is perfectly fine with me):
Dedicated charging port (DCP) BC1.1 describes power sources like wall warts and auto adapters that do not enumerate so that charging can occur with no digital communication at all. DCPs can supply up to 1.5A and are identified by a short between D+ to D-. This allows the creation of DCP "wall warts" that feature a USB mini or micro receptacle instead of a permanently attached wire with a barrel or customized connector. Such adapters allow any USB cable (with the correct plugs) to be used for charging.
Click to expand...
Click to collapse
That was taken from this page:
https://www.maximintegrated.com/en/app-notes/index.mvp/id/4803
My V20, using the stock Samsung 2A charger that I always use (because I don't like to quick charge my batteries, I don't trust it in any form and I still think it's damaging the cells but that's my own personal opinion on quick charging overall), can go from 15% to 85% (I use AccuBattery set to 85% and it alerts me when it hits that point so I can unplug, this increases the overall lifespan of the cell I'm using as measured in years not per-charge) in about 55 minutes to 1 hour depending on whether I'm still using the device or letting it charge screen off. That's using a plain old vanilla 2 amp capable charger and when I check the charging current sometimes it'll actually show 2.2 amps (2200+ miliamps) so I'm perfectly happy with that situation.
I've read reports from owners of Pixel USB chargers and when they use them with their V20 smartphones and look at the battery info in the hidden menu it will show USB-PD so I might have to get one of those sometime and see how it goes.
Suffice to say, 55 minutes for a 15% to 85% charge for me is fast enough and the battery still stays pretty cool overall. USB-PD is probably the best tech we'll be able to make use of with the V20. I've read that the V30 does fully support QC 3.0 without issues and the the stock V30 charger is QC 3.0 compliant. The new V40 is QC 4.0 ready but I don't know at this moment whether or not the actual stock charger handles it but again, the QC 4.0 support is handled by the SoC and it remains to be seen if LG allows it or forces it to QC 3.0/USB-PD operation. Guess I need to do some research into that aspect of the V40 too.
br0adband said:
The V20 does not support QuickCharge 3.0, that needs to be clear from the start because it causes a lot of confusion. The Snapdragon 820 does have support for the QC 3.0 standard, but LG chose for some reason NOT to support it. What the V20 does support is USB-PD aka Power Delivery which is similar to QC 3.0 in how it operates but it is NOT QC 3.0 (but the V20 does support QC 2.0 without issues with the stock charger).
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The V20 can support QC 3 with a custom kernel, for example with mk2000 oreo 1.1 beta with a qc3 3 charger it indicates HVDCP_3 (HVDCP is one of the important parts of quick charge)
I've been using exclusively pd or qc3 chargers with my v20 and both properly work, verified with a usb power meter. Qc3 does the little 200mv adjustments as expected. Although to be fair i do run mk2000
br0adband said:
The V20 does not support QuickCharge 3.0, that needs to be clear from the start because it causes a lot of confusion. The Snapdragon 820 does have support for the QC 3.0 standard, but LG chose for some reason NOT to support it.
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Have always doubted whether it was QC 2 or 3 but the log shows QC2.0TA in the service menu. Voltages measured by an inline meter are closer to 9V and around 1.3A (only with screen off) which suggests QC2. Power in shoots up to 15W initially and then drops to 13W and then 11 something W.
QC3 would be closer to 7V something with a higher amp input.. That's what the QC3 power bank used to charge the V20 accepts when charging itself.
This is stock btw, not rooted nor using any roms.
What the V20 does support is USB-PD aka Power Delivery which is similar to QC 3.0 in how it operates but it is NOT QC 3.0 (but the V20 does support QC 2.0 without issues with the stock charger)
USB-PD works like QC 3.0 in the sense that it does the charging in a different way that keeps the cells cooler during the charging process and doesn't cause the heat buildup that QC 2.0 causes.
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I found this interesting and hooked up my 100W laptop usb c charger to the phone and then use a usbc inline meter and found it did quick charge. At the same rate as Qc2. The meter read 8.91V @1.5A . This is surprising as i'd have thought usbc operates at 5V and a higher amperage.
When i looked at battery test screen from the service menu, the item for High voltage TA status reads as OFF. Yet my plugable usb c inline meter records around 13.5W going in with screen off. The voltage was 8.91V 1.5A. That's not USB-PD afaik, which should have said 5 V and a higher current draw. My laptop charger does not do Qualcom quick charge at all, So i'm not sure what is going on here.
I've been wary of using my laptop charger to charge the phone as i'd read an early report that some people had a bootloop problem and it was caused by USB PD chargers.
The factory LG V20 charger supports QC 2.0 and if you go into the hidden menu (*#546368#*<3-digit model number>#, might not work on every variant) and then SVC Menu - Battery Test - Battery Info - select the Enable Log button - check the box for Battery Log Save On/Off and it will then show the relevant info. Once you see the information display, plug in whatever charger you wish and then wait and see what it shows for High Voltage parameter.
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Fixed the code for you, it was missing a # before the * model number
If it's QuickCharge it will show the version being used - the stock V20 charger shows me QC2 so that's QuickCharge 2.0. I have a Samsung QC 3.0 compatible charger and when that's attached it shows USB-DCP which from what I understand is Samsung's modified variant of USB-PD but that could be wrong. I did some quick research and found this so it could be limiting the charging to 1.5A which is perfectly fine with me):
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Interesting, when i hook up a ravpower power bank that is also QC3 comparible i still see QC2. It charges no faster than the stock charger LG includes in the box
I've read reports from owners of Pixel USB chargers and when they use them with their V20 smartphones and look at the battery info in the hidden menu it will show USB-PD so I might have to get one of those sometime and see how it goes.
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Not in my case with a laptop charger, it just reads as OFF.. Do you remember where you read this maybe a link.
However when i use the laptop charger to usb C PD charge my power bank, the meter reads 4.89V 2.77A. That is a usb c PD charge. These are not the figures i get when using the laptop charger with the V20 as indicated above.
USB-PD is probably the best tech we'll be able to make use of with the V20. I've read that the V30 does fully support QC 3.0 without issues and the the stock V30 charger is QC 3.0 compliant. The new V40 is QC 4.0 ready but I don't know at this moment whether or not the actual stock charger handles it but again, the QC 4.0 support is handled by the SoC and it remains to be seen if LG allows it or forces it to QC 3.0/USB-PD operation. Guess I need to do some research into that aspect of the V40 too.
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I have mixed views about USB-PD and its suitability for phones. Laptops have larger cooling areas and so USB PD is fine with them. My laptop has a 100W charger and its charging as i type this and i don't find the laptop gets warm at all. The history with the 6P & First pixel showed people with battery problems and having to replace the battery shortly after a year. Particularly with the 6P. Not heard any problems with the second gen pixel as yet. Maybe its still too early. But even with qualcom quick charge and i use it all the time there should not be any problems with battery after a mere year.
Having said all that in the last post I made, a friend gave me a Samsung EP-TA20JBE charger last night, go figure. It's the first Samsung "fast charger" that I've had and I decided to plug it into my V20 and see what it showed. I know that if you use the Pixel chargers the battery info in the service menu will show USB_PD meaning it's communicating and charging using the Power Delivery standard. My regular Samsung 2A charger - plain old vanilla non-QC compatible straight 2A charger - shows USB_DCP when charging my V20 so that's a known thing; there is no QC support, no PD support, nothing but just pure current provided as requested.
Here's the funny thing:
The Samsung EP-TA20JBE apparently is a QC 3.0 compatible charger, but since it's made by Samsung what I see under the battery info is USB_HVDCP which I've never seen before. So I did research into the USB_HVDCP meaning and of course the HV means High Voltage.
What I discovered is that if you're using a true Qualcomm compliant QuickCharge 3.0 device with a true Qualcomm compliant QuickCharge 3.0 charger, your device should report it's getting QC3.0 under the battery info but that's where the fun begins because non-compliant hardware will just show "USB_HVDCP. Of course, because this is not an LG charger and the sense and communication stuff is not from them, it's falling back to Samsung's version of QC3.0 protocols - but what I discovered is that in such instances it's actually Qualcomm QuickCharge 3.0 in effect, it's just that on non-compliant chargers Qualcomm detects the charging protocol as USB_HVDCP.
So, I ran my V20 down to about 15% using a battery app that forces the device to use nearly 100% of the CPU, that took the better part of 45 minutes or so, and when the phone beeped to alert me it needed charging I stopped the battery rundown app, let the phone sit for about 15 minutes idle so it would cool down, then I plugged in the Samsung USB charger I picked up last night (using my Monoprice 26 gauge USB-C charging cable).
Normally if I charge the device using that Samsung vanilla 2A charger from 15% it will cause my V20 to get warm on the backside because it's pulling the full 2A from the charger and of course it'll get warm. It also takes roughly 55 minutes to about 1 hour solid to go from 15% to 85%, and the phone will stay warm till about 65% when the current pull changes to something lower, maybe 1.5A, and it continues to decline as the actual charge increases and of course the V20 cools down to various degrees (pun intended) as the current pull decreases.
But here's what I noticed using this Samsung USB charger:
I watched the charging indicator (screen off, I use AccuBattery which shows me the current battery percentage on the V20's second screen) and it was literally going up 1% every 35-40 seconds which I had never seen before, all the way to 85%. My V20 remained basically cool to the touch from the moment I plugged in that charger to the time AccuBattery alerted me about the 85% cap - that's what I have it set for to ensure I get a longer lifespan (measured in years) from the OEM LG cell I bought back in August, manufactured in Nov 2017 by the date on the battery.
So, I'm not sure what this all means but based on what I read about Qualcomm and how their chargers ID themselves, if you see USB_HVDCP that is QuickCharge 3.0 under the battery info in the service menu - it's not Power Delivery because the Samsung charger doesn't apparently support that protocol (but I'm not 100% sure on that one).
It's actually honest-to-goodness QuickCharge 3.0, according to the info I read yesterday afternoon, so while I'm still not 100% sure on the protocols or the various naming conventions like USB_PD, USB_DCP, USB_HVDCP, etc (I mean I know what they stand for, sure) and how the V20 identifies the charging protocols and usage, what I can for certain is that for the first time since I've owned my V20, I can charge it with this Samsung USB charger and never feel it get warm at all so for me that's a huge positive. Li-Ion batteries HATE heat buildup, that'll kill their effective lifespan (again measured in years) more than most anything else.
All the vanilla 2A or 1.8A chargers I have cause the phone to heat up during the charging process. I have a Motorola "TURBO" 25 watt QuickCharge 2.0 compatible microUSB charger that I used for testing purposes with a microUSB-to-USB-C adapter and under battery info that identifies as USB_DCP so that's QuickCharge 2.0 (which that particular charger is designed for) and the battery heats up when I use it. This new Samsung charger I just got last night, charges just as fast if not faster and there is NO heat buildup whatsoever that I could detect so, yep, QuickCharge 3.0 even if it's not identifying as QC3.0 under the battery info.
I suppose what I said earlier is now considered moot: the V20 DOES support QuickCharge 3.0, just not with the stock LG charger because it's not a QC 3.0 charger to begin with.
So, yeah, I guess I'll be using this Samsung charger from now on.
br0adband said:
Having said all that in the last post I made, a friend gave me a Samsung EP-TA20JBE charger last night, go figure. It's the first Samsung "fast charger" that I've had and I decided to plug it into my V20 and see what it showed. I know that if you use the Pixel chargers the battery info in the service menu will show USB_PD meaning it's communicating and charging using the Power Delivery standard. My regular Samsung 2A charger - plain old vanilla non-QC compatible straight 2A charger - shows USB_DCP when charging my V20 so that's a known thing; there is no QC support, no PD support, nothing but just pure current provided as requested.
Here's the funny thing:
The Samsung EP-TA20JBE apparently is a QC 3.0 compatible charger, but since it's made by Samsung what I see under the battery info is USB_HVDCP which I've never seen before. So I did research into the USB_HVDCP meaning and of course the HV means High Voltage.
What I discovered is that if you're using a true Qualcomm compliant QuickCharge 3.0 device with a true Qualcomm compliant QuickCharge 3.0 charger, your device should report it's getting QC3.0 under the battery info but that's where the fun begins because non-compliant hardware will just show "USB_HVDCP. Of course, because this is not an LG charger and the sense and communication stuff is not from them, it's falling back to Samsung's version of QC3.0 protocols - but what I discovered is that in such instances it's actually Qualcomm QuickCharge 3.0 in effect, it's just that on non-compliant chargers Qualcomm detects the charging protocol as USB_HVDCP.
So, I ran my V20 down to about 15% using a battery app that forces the device to use nearly 100% of the CPU, that took the better part of 45 minutes or so, and when the phone beeped to alert me it needed charging I stopped the battery rundown app, let the phone sit for about 15 minutes idle so it would cool down, then I plugged in the Samsung USB charger I picked up last night (using my Monoprice 26 gauge USB-C charging cable).
Normally if I charge the device using that Samsung vanilla 2A charger from 15% it will cause my V20 to get warm on the backside because it's pulling the full 2A from the charger and of course it'll get warm. It also takes roughly 55 minutes to about 1 hour solid to go from 15% to 85%, and the phone will stay warm till about 65% when the current pull changes to something lower, maybe 1.5A, and it continues to decline as the actual charge increases and of course the V20 cools down to various degrees (pun intended) as the current pull decreases.
But here's what I noticed using this Samsung USB charger:
I watched the charging indicator (screen off, I use AccuBattery which shows me the current battery percentage on the V20's second screen) and it was literally going up 1% every 35-40 seconds which I had never seen before, all the way to 85%. My V20 remained basically cool to the touch from the moment I plugged in that charger to the time AccuBattery alerted me about the 85% cap - that's what I have it set for to ensure I get a longer lifespan (measured in years) from the OEM LG cell I bought back in August, manufactured in Nov 2017 by the date on the battery.
So, I'm not sure what this all means but based on what I read about Qualcomm and how their chargers ID themselves, if you see USB_HVDCP that is QuickCharge 3.0 under the battery info in the service menu - it's not Power Delivery because the Samsung charger doesn't apparently support that protocol (but I'm not 100% sure on that one).
It's actually honest-to-goodness QuickCharge 3.0, according to the info I read yesterday afternoon, so while I'm still not 100% sure on the protocols or the various naming conventions like USB_PD, USB_DCP, USB_HVDCP, etc (I mean I know what they stand for, sure) and how the V20 identifies the charging protocols and usage, what I can for certain is that for the first time since I've owned my V20, I can charge it with this Samsung USB charger and never feel it get warm at all so for me that's a huge positive. Li-Ion batteries HATE heat buildup, that'll kill their effective lifespan (again measured in years) more than most anything else.
All the vanilla 2A or 1.8A chargers I have cause the phone to heat up during the charging process. I have a Motorola "TURBO" 25 watt QuickCharge 2.0 compatible microUSB charger that I used for testing purposes with a microUSB-to-USB-C adapter and under battery info that identifies as USB_DCP so that's QuickCharge 2.0 (which that particular charger is designed for) and the battery heats up when I use it. This new Samsung charger I just got last night, charges just as fast if not faster and there is NO heat buildup whatsoever that I could detect so, yep, QuickCharge 3.0 even if it's not identifying as QC3.0 under the battery info.
I suppose what I said earlier is now considered moot: the V20 DOES support QuickCharge 3.0, just not with the stock LG charger because it's not a QC 3.0 charger to begin with.
So, yeah, I guess I'll be using this Samsung charger from now on.
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Plain USB_HVDCP is quickcharge 2.0, when its 3 it shows as USB_HVDCP_3 (if you use a custom kernel like mk2000 and a qc3 charger its possible)
What made me think the V20 uses QC3 is the inline meter i used with it said so. This btw is from the stock charger too. But the voltages do not convince me
The voltage between qc2 and 3 are pretty much the same, but 3 has more levels in between the max and min voltage so less energy is wasted.
They're not the same. I remember a post from the HTC 10 forum and that phone comes with a QC3 certified charger and the volts were in the 7 range with higher amps. Which btw is the same as when my ravpower power bank charges with a QC3 compliant but not certified charger
So we still don't have anything absolutely concrete, great.
But as I said, with a QC 2.0 charger (the Motorola TURBO one) my V20 gets quite warm from 15% to 85%.
With this Samsung QC 3.0 charger, it doesn't get noticeably warm to any significant amount from 15% to 85% AND it gets charged faster.
So I have no idea and really just figured "OK, whatever, it charges faster and cooler, I'll use it..." and that's that.