Database Users

Battery over heating

Battery heats up when charging. Very hot
Sent from my Nexus S using XDA App

What charger are you using?
Go to your dialer and dial *#*#INFO#*#* then select Battery Information.
What temperature is it showing when it's charging?

Its normal for the batt to heat up when its charging..but to an extent

I got the rockfish from best buy. It only heats up some times
Sent from my Nexus S using XDA App

kjy112 said:
I got the rockfish from best buy. It only heats up some times
Sent from my Nexus S using XDA App
Click to expand...
Click to collapse
Yes that's normal, but you said it gets very hot, and again, read my first reply to your post and tell me what you see, then we can tell you if your heating is normal or not.

make sure you turn off WiFi when you are charging the battery on your SNS
else it heats up really really fast and hot
that was the same on the SGS

Dude at bestbuy told me that chargers other than stock were frying the batteries
Sent from my Nexus S

jwr2d2 said:
Dude at bestbuy told me that chargers other than stock were frying the batteries
Sent from my Nexus S
Click to expand...
Click to collapse
i wouldnt even listen to someone at best buy even if it what he told you seemed favorable

It seems common behavior on the Nexus. My NS got up to 105° F last night (to be fair, it was under my pillow). I've simply taken to turning it off when I charge at night, but seeing as my NS is a glorified PMP (and therefore I don't have to worry about texts or other notifications on it), you might feel differently about simply turning it off.
Sent from my Nexus S using XDA App

It's interesting to note that the adapter for the Nexus S actually charges at(and I'm sure I'm getting my terminology wrong, sorry electricity guys!) .7AMP vs the 1AMP that other smart phones charges at such as the Nexus One.
This might account for the seemingly longer charge times we've had reported, and why you might be seeing increased heating from using a third-party more generalized charger. Whether or not there's any truth to the idea that it may cause permanent damage to your device, I don't know. I would greatly appreciate it if someone more knowledgable about this kind of thing would post, as I'm considering buying a second charger/car charger. In any which case, I personally take what Best Buy/T-Mobile/anyone's first level support tell me with a great big grain of salt.

google maps heating phone up
I just had a similar experience with my Nexus S getting really warm while using Google Maps this morning. I usually use Google Maps in Car Mode with traffic overlayed as I drive to and from work (~30-40 min. drive). This morning I noticed the phone got really warm by the end of my commute, which did not happen the previous 3 or 4 times I have used Maps in this same fashion. I will take nxt's advice and check the temperature on the phone next time it heats up again. Does anyone know what is a "safe" upper temperature limit for the phone or battery? I've read that higher temperatures are detrimental to the life of a lithium battery.
Other than this one time, I have not experienced any other high temperature issues with my Nexus S in the ~1 week that I've had it.
Thanks ahead of time for any help/advice. This is my very first smartphone and I am eagerly trying to absorb as much information as I can about it so I can determine what is normal/abnormal behavior. I am loving my Nexus S so far!

I don't think third party chargers are to blame. In fact, I'd go as far as to say the opposite is true. I read that the shorter data pins on the official charger cause the device to enter a faster charging state, as compared to the usb cable or third party chargers.

I've yet to feel my nexus s get warm at all... during charging w/ wifi on. Using samsung wall charger, using LG wall charger, using computers w/usb cable.

My NS gets hotter to the touch than my Vibrant ever did, but when I check the battery temperature it is never as high as my Vibrant used to get.
When charging in the car and running Navigation + streaming music the Vibrant would hit almost 125F whereas my NS tops out at 110F.
Sent from my Nexus S using Tapatalk

AllGamer said:
make sure you turn off WiFi when you are charging the battery on your SNS
else it heats up really really fast and hot
that was the same on the SGS
Click to expand...
Click to collapse
Well that kind of sucks if you're using it to Wifi tether and want to charge you SNS while you're doing it.

Bump.
Today was the first time I've felt my Nexus S get super heated when charging. Never happened before. I've been charging the same exact way since owning the phone back in December.
Odd.

onthecouchagain said:
Bump.
Today was the first time I've felt my Nexus S get super heated when charging. Never happened before. I've been charging the same exact way since owning the phone back in December.
Odd.
Click to expand...
Click to collapse
it depends on the usage
when i download TONS of stuff via 3G or WiFi it heats up a lot, only if i have it plugged in to the charger, else it does not heat up
However! if you check carefully, or better yet, if you take out the back cover
you will notice it is not the battery that is hot, but the area beneath the SIM card that is hot, which points to be the CPU

AllGamer said:
it depends on the usage
when i download TONS of stuff via 3G or WiFi it heats up a lot, only if i have it plugged in to the charger, else it does not heat up
However! if you check carefully, or better yet, if you take out the back cover
you will notice it is not the battery that is hot, but the area beneath the SIM card that is hot, which points to be the CPU
Click to expand...
Click to collapse
I see, thanks. Will keep in mind.

FWIW, I have been charging my Nexus S with the Nexus One charger (1 amp) since day 1 - I can't stand how short the stock charging cable and wall adapter were. I haven't had any unusual temperature spikes when charging at all. I don't even really notice it getting warm under heavy load - unlike the Nexus One with the aluminum casing that conducted heat very well. Edit: I also leave WiFi on with a No Sleep policy when I am at home and I've not encountered any warming issues either.

I would be careful if I ware you.. high heat is dangerous for the battery, it might swallow and even a leak if you will keep using your device constantly at high temperatures.
I Have never had any problems with heat and I have been using it a lot.
btw, I use stock rom..

What a cluster this thing is to charge...

The note is a disaster for me when it comes to charging.
If your battery is low and you start charging it but using it at the same time, it doesn't get worse, but it doesn't get better either i.e. actually charge the thing, it just holds its own.
I have got to say I am not impressed with this!

I am not facing such problems. Charging takes pretty long yes but not as bad as you said. A larger battery will of course need a longer time to charge. But I wonder sometimes too if it's the battery problem or the charger output problem and if there's a way to speed up the process.

Jasonchewy91 said:
I am not facing such problems. Charging takes pretty long yes but not as bad as you said. A larger battery will of course need a longer time to charge. But I wonder sometimes too if it's the battery problem or the charger output problem and if there's a way to speed up the process.
Click to expand...
Click to collapse
I think it is more to do with the actual charger, seems like a trickle charge or something.
Yes if charging and using at the same time you would not expect it to charge as quick, but mine doesnt really charge at all, just stays the same.
My acer iconia will charge like lightning even when i am using it, smaller battery or not it still charges!
This was one of the things i was looking forward to with the note, but this slow charge seems to make it more or less the same as what I am used to.
I have the usb plug which comes with the kindle, might it do a better job?

If anyone manages to find a proprietary charger which can produce better charging I will like to know too

That is common the charging is very slow and if you are playing HD games then the charging is almost in negative. May be its because of the voltage of the charger inputs and it is to low. Samsung must have done it for a reason may be its because of the proprietry port or the battery itself we do not know but we need to live it

Agreed, charging this thing takes a long time. Keep in mind that the battery is 7000 mAh and the charger is most likely a 2 amp charger, pegging the charge time at around 4 hours with no other losses. So if you're using it, it should take even longer.

MJ-12 said:
The note is a disaster for me when it comes to charging.
If your battery is low and you start charging it but using it at the same time, it doesn't get worse, but it doesn't get better either i.e. actually charge the thing, it just holds its own.
I have got to say I am not impressed with this!
Click to expand...
Click to collapse
No such issue here. I charge to full capacity while using all the time.

I get what he's saying. Because it draws so much power when you're using it; having it charging at the same time doesn't move the needle much. For example, if you're watching a movie while it's charging you'll probably be at the same point battery wise when the movies over. People complain about this all the time when their using their devices as a GPS. In some cases not only doesn't it charge but it actually continues to drain so you're worse off from where you started. We're using 21st century toys powered by 20th century battery technology.

BarryH_GEG said:
I get what he's saying. Because it draws so much power when you're using it; having it charging at the same time doesn't move the needle much. For example, if you're watching a movie while it's charging you'll probably be at the same point battery wise when the movies over. People complain about this all the time when their using their devices as a GPS. In some cases not only doesn't it charge but it actually continues to drain so you're worse off from where you started. We're using 21st century toys powered by 20th century battery technology.
Click to expand...
Click to collapse
This is a better way of saying what I mean, thank you.
I also have to say one thing I do not like doing is turning the screen brightness down. After all we all get these things as they look so good, so I am not going to make it look worse when I am using it, what would be the point in that? Its a bit like saying yeah my battery life is 14 days but actually it is on standby for that time lol...
Anyway, I still believe it should be better and the primary cause is the weak charger for what ever reason sammy decided to make it that way, but its not a good thing.

It seems like I remember someone recommending a charger that was more powerful so the note would charge faster. Can anyone confirm this?

What a fail thread. If you know ANYTHING about charging, you would know why this happens and why this is NORMAL.
But why even search or educate oneself, let's post a thread on XDA and whine a bit.

It could be worse. It takes six hours to charge a N10.

I dont face this problem i charge mine when surfing the wep

On a slightly related side note, doesn't it suck that the brightness just turns down completely when the battery is low?

The zslower charge rate protects the batteries life ,reduces the possibilty of heat and battery damage trickling insures a full charge

if you don't want your screen to dim don't use the power saving setting.
Sent using Tapatalk2 from my Note 10.1; the choice of Royalty

For all those facing the slight unresponsive screen please change the source of power, I had mine connected to UPS power supply as soon as I changed and connected it direclty the problem was gone.
Even if you read the user manual of Samsung Note its says thats one of the reasons

How Manhattan hours per day do you use the note? With a 10hrs battery life I find an overnight charge is sufficient
Sent from my GT-N8010 using Tapatalk HD

Szadzik said:
What a fail thread. If you know ANYTHING about charging, you would know why this happens and why this is NORMAL.
But why even search or educate oneself, let's post a thread on XDA and whine a bit.
Click to expand...
Click to collapse
Wow! many friends?
Anyway moving on.. so i just got my note 10.1 about a week ago, loving it but saw that while plugged in it was not charging at all while i was using the tablet and never quite getting to 100% overnight. By not charging while using, i mean to say that it was actually discharging. Yes of course i am using the stock charger and cable.. and even stock note.
so just tried something silly. Unplugged and plugged the usb from the block repeatedly about 5 times. Now its not only recognizing and charging, but charging relatively quickly even while using. To test, i unplugged for about 20 min and plugged back in. Same great results.
Just thought i would share instead of hoarding my new found knowledge like others..
Quick update: it charged about 10% in 20 min.. Nice

I don't charge mine - I paid cash for it

Turbo Charger

I found this interesting....
The Turbo Charger works officially with the Moto X (2nd gen) and Nexus 6. It will work with the DROID TURBO as well, but that phone isn’t exactly official yet. The DROID TURBO and Nexus 6 should include a Turbo Charger in the box, whereas with the new Moto X, you will have to fork out $34.99 for one.
Click to expand...
Click to collapse
http://www.droid-life.com/2014/10/16/video-testing-the-motorola-turbo-charger-with-a-moto-x

yup, says so in the leaked VZW training/marketing material that the charger is included in the box of the turbo...
it also mentions that charging speed (of the turbo charger) slows as the device reaches full charge...as it is intended to be used when the battery is near depletion..
of course the jury is still out on what effect the turbo charger will have on the performance/life expectancy of the battery if you choose to use the turbo charger as your normal charger...

Metfanant said:
yup, says so in the leaked VZW training/marketing material that the charger is included in the box of the turbo...
it also mentions that charging speed (of the turbo charger) slows as the device reaches full charge...as it is intended to be used when the battery is near depletion..
of course the jury is still out on what effect the turbo charger will have on the performance/life expectancy of the battery if you choose to use the turbo charger as your normal charger...
Click to expand...
Click to collapse
Thanks, didn't see that info in the leaks.
Slowing charging as it nears full isn't all that bad. I've seen a lot of people arguing over whether it is bad for the phone and all that, but the reality is no one really knows. I can't imagine that they'd be providing only one charger, that will over time kill the battery on a device with a battery that is not accessible. I know the amount of time that people hold on to devices is getting shorter and shorter these days, but if it was really bad for the battery it would be a pretty terrible idea to encourage people to use it. Sure heat isn't great for batteries, but this is a brand new technology, so one might think that there is also equally new technology to help counteract that heat, or some other voodoo magic to make it work well.
I'm actually more excited for wireless charging. I have a Nexus 7 that supports it, but don't have any charging pads. I didn't really want to buy one just for the N7 because I don't use it nearly as much as my phone. But if I can have one pad for both, I'll get one for my desk at work and one for at home (probably the side table for when I'm watching TV or using my Chromebook in the living room). I know it would take forever to charge it to full, but I'd want it more for quick bumps during the day. If I'm sitting at my desk at work listening to Pandora on my phone, I usually plug in if I'm below 60% or so so that I can be sure I'll have enough juice for the rest of the day/evening. I use hotspot on the bus ride home for my N7, and that usually takes about 20% of my overall battery each way to/from work. If I could just plop it down and add even 4-5% throughout the day here and there, I'd be good. Although, with the monster battery in the Turbo, I don't know that it would really matter at that point.
Either way, I'm pretty much over the N6 based purely on size, and will almost certainly be getting the Turbo once a reliable (and fairly simple) root method has been found.

Quick charger crapped out. Question on quick charging.

I have read about the turbo 2 chargers crapping out mine had been giving me issues. So I called Moto and they sent me a brand new in the box turbo 1 charger thats right folks. So I called them and said this is the turbo charger not the turbo 2. Well they don't have any turbo 2 chargers BS. So guess I'm stuck with this charger. My question is the turbo 2 charges at 24w and this one charges at 18w. Does it charge slower has anyone tested this or should I just not care or it is son negligible I wouldn't notice.

This happened to me as well, I haven't really noticed much of a difference. The charging time for the 18w isn't much slower than the 24w, but it is a little bit slower. Not a big deal though.

johnmansfield said:
This happened to me as well, I haven't really noticed much of a difference. The charging time for the 18w isn't much slower than the 24w, but it is a little bit slower. Not a big deal though.
Click to expand...
Click to collapse
Well go figure verizon stepped up I called them and they said bring in the charger and they will replace with there 24 watt charger.

Verizon was cool in this case
Anyway, I don't like turbo charging. Shorts battery life.
Sent from my XT1580

Zeljko1234 said:
Verizon was cool in this case
Anyway, I don't like turbo charging. Shorts battery life.
Sent from my XT1580
Click to expand...
Click to collapse
I'll take my chances, don't see Motorola packing a charger with the phone that's gonna damage it.

mjones73 said:
What proof do you have that's happening?
Click to expand...
Click to collapse
It's just chemistry/physics (learned in high school) and practice. More information with tests, graphs, explanations... you may find here: http://batteryuniversity.com/learn/article/ultra_fast_chargers.

I don't know, as long as it's not overheating the battery it shouldn't be really doing any damage. The UL did an extensive study on it and didn't find any issues with decreased battery life. I understand overheating them can shorten their life, the qualcomm tech used monitors the temps and adjusts accordingly. I think my phone gets hotter running GPS then it does turbo charging it. Time will tell I suppose..

Heat is main problem but not only one. Heat from GPS is coming from SoC and it's worse if is coming from the battery itself. Unfortunately battery cells are very sensitive. Electronics can help but not really avoid chemistry.

any idea how long does it take for u all to full charge on turbo?
i find it that i get turbo charge only when i switch the device off... is it like that for all of you?

I gave my phone back as I was getting very inconsistent readings...somtimes it does 20 to 80 % in 50 mins... sometimes it does like 30 to 55 in an hour.. which is very weird.. isnt it supposed to be consistent? and yes my phone hits temps of 45 Deg. Celsius..

Zeljko1234 said:
Verizon was cool in this case
Anyway, I don't like turbo charging. Shorts battery life.
Sent from my XT1580
Click to expand...
Click to collapse
My friends bring that up about Quick Charge and shortening the life of the battery. But it's a moot point since I get a new phone at least once a year. I mean, it's not my problem at that point. Lol, that makes me sound like a total asshole.

You can donate you less than a year old phone to a dev
Sent from my XT1580

Charging Speed

i have had the V20 for about 12 hours in which time it charged from about 50% to about 75% ... my Note would accomplish the same in about 15 minutes ... and yet the V20 is supposed to run the same type of quick charger on the same size battery ... something about this doesn't rub me the right way
yes i did use the phone and unplug it a few times etc but it still should have been much faster ...
it was connected using its own cable and charger BUT through a USB extension cord ... so then i thought maybe that's the problem - maybe i need a longer type C cable and to get rid of extension cord ... but i need to have an answer to that BEFORE buying new cables ...
so i plugged it in directly ( no extension ) and tried to see if it charges in correct mode ...
and here is where i face plant into a wall of excruciating stupidity ... every single app out there measures charging current, whereas what i really want to know is whether the charger is running at 5V standard voltage or using the quick charge 9V voltage ... amazingly there doesn't seem to be an app to show this - or is there ?
my galaxy note would simply say " adaptive quick charger connected " when plugged into quick charger but the V20 doesn't say anything like that.
accubattery app says my screen on charging rate is 760 ma and screen off is 1760 ma ... and the charger of course states 1.8 A so that's consistent ... but is that at 5V or at 9V ? the charger supports both - which one is it ?
this is killing me - so much stupidity. it shouldn't be that hard to figure out whether the phone is charging correctly or not.
anybody have an idea how i could find out whether the charger is actually stepping up to 9V without physically cutting the USB cable and using my multimeter ?
EDIT: i realized i have a kill-a-watt ( actually two of them ) and i can measure power draw from 120V outlet ... so i did that. the draw fluctuated from about 6 to 13 watt. now if we assume 90% efficiency on the charger then full power would have to draw 18 watt from outlet - clearly it never got close. on the other hand at 5V it should have maxed out at around 10 watt power draw, and it went quite a bit over that so it would seem to be using the 9V mode ...
at this point however i'm up to 90% battery and can't expect it to charge at full rate any more as some battery charging algorithms taper off above 80% or so ...
i tried with and without extension cord and noticed no difference ... also if i remember correctly my Note also charged fine over this same extension cord ... but i'm not sure
EDIT: played with turning off 2nd screen as well as shutting down device completely - this phone is crazy. power draw is all the place - at one point it went to ZERO and stayed there until i unplugged it and plugged it back in, then it would fluctuate between zero and 14 watts ...
you know back in the day i had LG Nitro HD and it had worst battery performance of any phone ever ... and this V20 seems to be living up to that legacy. WTF.
anyway, it seems the charger and the cable and extension are not to blame - it seems there is some kind of software weirdness that is resulting in very sporadic power draw ...
slow charging is one of the reasons i switched from iPhone back to Android - i expected this V20 to perform similarly ( blazing fast charging ) to the Note 4 i had before the iPhone 6S Plus ... but it's charging performance so far is almost identical to the iPhone - slow as a snail.
i already spent $80 on case and screen protector and i'm supposed to spend a bunch more on extra cables and memory card as well as sell my iPhone and at the same time i'm thinking - maybe i should just return it ? going to have to observe it for a while longer before making any decisions either way ... terrible.

The V20 is QC 3.0
The Note 5 is QC 2.0
The V20 will negotiate with a 3.0 charger to tell the charger what power it requires at that moment so power will fluctuate during charging.
this will show you which devices are 3.0 and 2.0
https://www.qualcomm.com/documents/quick-charge-device-list
Quick charging explained
http://www.androidauthority.com/quick-charge-3-0-explained-643053/

nest75068 said:
The V20 is QC 3.0
The Note 5 is QC 2.0
The V20 will negotiate with a 3.0 charger to tell the charger what power it requires at that moment so power will fluctuate during charging.
this will show you which devices are 3.0 and 2.0
https://www.qualcomm.com/documents/quick-charge-device-list
Quick charging explained
http://www.androidauthority.com/quick-charge-3-0-explained-643053/
Click to expand...
Click to collapse
yeah it fluctuates a lot. i gave up on apps and just using Kill-a-watt now which is a physical power meter you insert into 120V outlet. it shows power draw from charger, not output, but we can assume about 90% efficiency from input to output of charger.
i let the V20 drain to 40% overnight and restarted the test today. with the extension cord it went up to 16 watt draw from outlet and stayed there - charge quickly went up to 55% then i tried without the extension cord and now its only at 11 watts. this is with both screens off. so far my conclusion is that using an extension cord makes no difference but the level of charge on the phone does impact the charging speed. you need to drain the phone to measure full charging speed.
i will continue with my testing but i am somewhat relieved. 16 watts is close to spec, in fact the spec is 16 watt but on the OUTPUT side of charger, not input, so i'm withing about 10% of spec.
i'm also a lot less nervous buying charging cables now that i verified 16 watt charging over many years old USB 2.0 extension cord ...
EDIT: wow it went from 55% to 68% while i was typing this message ! this is very different from what i saw yesterday ... it was running at 11 watts while i was typing. looks like the phone charges fast as long as it is: 1) drained and 2) left alone. if the phone is almost full and you keep playing with it the level of charge barely changes.
EDIT: at 89% charge it's now down to just 4 watts power draw from outlet ... 25% of what it was pulling at 40% charge. so far it looks like it tapers charging speed off gradually with charge level - starts early and tapers it off to almost nothing as it nears full charge ... and all the while it fluctuates with processor and screen use and probably other factors such as temperature. maybe the reason it went to 16 watts when i plugged it in the morning is that the phone was cold from not being used all night and perhaps it now warmed up so the power got tapered.
maybe i'll stop testing it - it seems to be working correctly, just not the way i originally expected it to.
overall i'm disappointed with this phone but the only phone i would trade it for is Pixel XL 128 GB Very Black which is unavailable ... so i guess i will keep it.
the phone i'm most impressed with right now is ZTE Axon 7 i got for my mother - it is shockingly good - if it wasn't for FM radio, IR Blaster, Removable Battery, Laser Autofocus, Dual Camera, Dual Screen and Nougat i would even say the ZTE Axon 7 is BETTER than V20. the main problem with ZTE is it's just not expensive enough for my ego - otherwise it is great. the screen is is super sharp, vivid and punchy, the front facing speakers are loud and crisp and then there's the 2 year warranty. i'm jealous ...
but i will stick with V20 to protect my dignity. because let's face it - if i'm out on a date i want to have the latest, most technologically advanced and most expensive phone - not the cheapest phone, even if it is just as good or better. really happy with my decision to get Axon 7 for my mom though. she loves it as well.

The way QC works is that it will charge fastest from low power until around 70-80% and then slow down A LOT to help preserve the battery. That is why you saw a high wattage and then when you got into the 80's you saw a very low wattage.
QC is mainly for you to get 40-50% of battery power in a relative short amount of time when your battery is low.

I bought a little device that measures the voltage and current of the charge. And I'm using my own Quick Charge 3.0 wall charger.
When the screen is off or powered down, it charges at 9V/1.8A max. Resulting in about 16W of power. Which is pretty much what the supplied LG charger delivers.
When the screen is on, it charges at 5V/0.5A
My QC3.0 charger is capable of up to 9V/2A and 12V/1.5A, 18W of power. The V20 doesn't seem to draw that much power. And now I'm starting to doubt the V20 is truly a QC3.0 device.

BozQ said:
I bought a little device that measures the voltage and current of the charge. And I'm using my own Quick Charge 3.0 wall charger.
When the screen is off or powered down, it charges at 9V/1.8A max. Resulting in about 16W of power. Which is pretty much what the supplied LG charger delivers.
When the screen is on, it charges at 5V/0.5A
My QC3.0 charger is capable of up to 9V/2A and 12V/1.5A, 18W of power. The V20 doesn't seem to draw that much power. And now I'm starting to doubt the V20 is truly a QC3.0 device.
Click to expand...
Click to collapse
I'll grab voltage/amp reader that I have at home and test my 3 QC 3.0 chargers I have (I'll drain phone to around 20% and then test them and see how it goes) - I'm going to test with the phone off so it pulls the max and see what it ends up with
I have this at work
https://www.amazon.com/gp/product/B018RR30TK
I have this at home
https://www.amazon.com/gp/product/B01FCZACFA
And this in the car
https://www.amazon.com/gp/product/B01CCBGR1U

g1981c said:
yeah it fluctuates a lot. i gave up on apps and just using Kill-a-watt now which is a physical power meter you insert into 120V outlet. it shows power draw from charger, not output, but we can assume about 90% efficiency from input to output of charger.
i let the V20 drain to 40% overnight and restarted the test today. with the extension cord it went up to 16 watt draw from outlet and stayed there - charge quickly went up to 55% then i tried without the extension cord and now its only at 11 watts. this is with both screens off. so far my conclusion is that using an extension cord makes no difference but the level of charge on the phone does impact the charging speed. you need to drain the phone to measure full charging speed.
i will continue with my testing but i am somewhat relieved. 16 watts is close to spec, in fact the spec is 16 watt but on the OUTPUT side of charger, not input, so i'm withing about 10% of spec.
i'm also a lot less nervous buying charging cables now that i verified 16 watt charging over many years old USB 2.0 extension cord ...
EDIT: wow it went from 55% to 68% while i was typing this message ! this is very different from what i saw yesterday ... it was running at 11 watts while i was typing. looks like the phone charges fast as long as it is: 1) drained and 2) left alone. if the phone is almost full and you keep playing with it the level of charge barely changes.
EDIT: at 89% charge it's now down to just 4 watts power draw from outlet ... 25% of what it was pulling at 40% charge. so far it looks like it tapers charging speed off gradually with charge level - starts early and tapers it off to almost nothing as it nears full charge ... and all the while it fluctuates with processor and screen use and probably other factors such as temperature. maybe the reason it went to 16 watts when i plugged it in the morning is that the phone was cold from not being used all night and perhaps it now warmed up so the power got tapered.
maybe i'll stop testing it - it seems to be working correctly, just not the way i originally expected it to.
overall i'm disappointed with this phone but the only phone i would trade it for is Pixel XL 128 GB Very Black which is unavailable ... so i guess i will keep it.
the phone i'm most impressed with right now is ZTE Axon 7 i got for my mother - it is shockingly good - if it wasn't for FM radio, IR Blaster, Removable Battery, Laser Autofocus, Dual Camera, Dual Screen and Nougat i would even say the ZTE Axon 7 is BETTER than V20. the main problem with ZTE is it's just not expensive enough for my ego - otherwise it is great. the screen is is super sharp, vivid and punchy, the front facing speakers are loud and crisp and then there's the 2 year warranty. i'm jealous ...
but i will stick with V20 to protect my dignity. because let's face it - if i'm out on a date i want to have the latest, most technologically advanced and most expensive phone - not the cheapest phone, even if it is just as good or better. really happy with my decision to get Axon 7 for my mom though. she loves it as well.
Click to expand...
Click to collapse
Just smh at this whole post. I want my 5 minutes back.

Thats weird, Im using my Note 7 charger on the V20 and it charge the phone completely in less that 2 hours. In my case I always drain my phone to 3% and leave it charging up to 100%. I will check again tonight to be sure.

TempezT said:
Thats weird, Im using my Note 7 charger on the V20 and it charge the phone completely in less that 2 hours. In my case I always drain my phone to 3% and leave it charging up to 100%. I will check again tonight to be sure.
Click to expand...
Click to collapse
I wouldn't drain it that low all the time unless you plan on stocking up on batteries or don't mind depleting longevity of battery quicker than usual.

@rbiter said:
I wouldn't drain it that low all the time unless you plan on stocking up on batteries or don't mind depleting longevity of battery quicker than usual.
Click to expand...
Click to collapse
Tmobile Jump on Demand ftw - I only have devices for 5-6 months tops and then get a new phone

Tested this one one when I got home.
https://www.amazon.com/gp/product/B01FCZACFA
I was getting 9.2v @ 1.67A = 15w of power. This is the max that my USB multimeter can do so it would seem that this charger is good for QC 3.0 as it did fluctuate voltage as needed.

nest75068 said:
Tmobile Jump on Demand ftw - I only have devices for 5-6 months tops and then get a new phone
Click to expand...
Click to collapse
That is still wasteful use on a battery and giving the next guy a raw deal. But to each his own. I try and make everything last and more efficient so the next person feels like they are truly getting an almost lightly used phone. If I sell my note4, they're going to get a lightly used battery on top of the 3 extras, with fixed GPS and better reception and cleaned out USB port with no oxidization. Same with my HTC m8 though that was only used as daily driver for two weeks and then a DAP for trips and occasional home use. Definitely selling the m8. They are basically getting a lightly used phone and the battery should still have some good life coming out of it. And personally I think jump is overpriced leasing but I guess you can drive it like you stole it. I prefer handing down the best experience I can to the next person.

@rbiter said:
That is still wasteful use on a battery and giving the next guy a raw deal. But to each his own. I try and make everything last and more efficient so the next person feels like they are truly getting an almost lightly used phone. If I sell my note4, they're going to get a lightly used battery on top of the 3 extras, with fixed GPS and better reception and cleaned out USB port with no oxidization. Same with my HTC m8 though that was only used as daily driver for two weeks and then a DAP for trips and occasional home use. Definitely selling the m8. They are basically getting a lightly used phone and the battery should still have some good life coming out of it. And personally I think jump is overpriced leasing but I guess you can drive it like you stole it. I prefer handing down the best experience I can to the next person.
Click to expand...
Click to collapse
My devices go back to tmobile which then go back for refurbishment. With the V20 it's easy for them to just replace the battery.

And you really think they do?

@rbiter said:
And you really think they do?
Click to expand...
Click to collapse
Who knows but tbh it's not my issue at that point.

nest75068 said:
I have this at work
https://www.amazon.com/gp/product/B018RR30TK
Click to expand...
Click to collapse
Just tested this one at work. Phone was at 28% and I had been streaming Youtube for a good 2 hours before doing the test.
Ended up pulling 9.17v @ 1.68A = 15.40 watts (again maximum that my tester can do).
I'll be ordering a new tester that can handle up to 25A and testing again to see if I can pull the max 18watts of power that the QC 3.0 chargers says it can deliver

nest75068 said:
Just tested this one at work. Phone was at 28% and I had been streaming Youtube for a good 2 hours before doing the test.
Ended up pulling 9.17v @ 1.68A = 15.40 watts (again maximum that my tester can do).
I'll be ordering a new tester that can handle up to 25A and testing again to see if I can pull the max 18watts of power that the QC 3.0 chargers says it can deliver
Click to expand...
Click to collapse
You mean 25W charger?
Which charger is that? Do share, please.

BozQ said:
You mean 25W charger?
Which charger is that? Do share, please.
Click to expand...
Click to collapse
No it's a USB Mutlimeter
https://www.amazon.com/dp/B01J7236K2
It will support up to 30V testing and 5A (but there is no charger that I know of that can do that much lol)

nest75068 said:
No it's a USB Mutlimeter
https://www.amazon.com/dp/B01J7236K2
It will support up to 30V testing and 5A (but there is no charger that I know of that can do that much lol)
Click to expand...
Click to collapse
I see.
This looks like a good device.

There are time on my v10 where I'll plug it in and it will charge at a reduced rate so I have to unplug it and plug it back it and it changes to fast charge, that's just been my experience. This is using factory plug and adapter too.
So you might want to make sure the phone says "fast charging" and not "charging".
Sent from my LG-H901 using XDA-Developers mobile app