Develop Bugs

This chager charges my phone from 4% to %100 in exactly 3 hours.

So I just ordered this charger and it charged my phone from 4% to %100 percent in exactly 3 hours!
http://www.amazon.com/gp/product/B0051ZJA64/ref=oh_o00_s00_i00_details
Wow, what a great improvement over stock which takes 6+ hours. This makes me believe, that even though the stock output is rated at 1000ma and this charger's output is only rated 700ma that this charges works correctly!
If you have a 1800mah battery and you charge it at a rate of .7A, it should take it exactly 2.57 hours to charge, (1800/700). With stock it should take less, because 1800/1000 = 1.8 hours, but it takes 6+ hours to fully charge! Something is f'ed up with the stock charger or phone's software...

Yeah. About that. I just got my E4GT yesterday and noticed it does charge extra slow compared to my O.G. Epic.
My wife stayed with hers, maybe I will try charging my phone on hers. I wonder if that would make a difference...

Android Amateur said:
Yeah. About that. I just got my E4GT yesterday and noticed it does charge extra slow compared to my O.G. Epic.
My wife stayed with hers, maybe I will try charging my phone on hers. I wonder if that would make a difference...
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At first my charging was extremely slow but now it'll charge from 2 to 100 in under three hours
Sent from my SPH-D710 using xda premium

I use the Palm charger from my TouchPad. Will go from dead to fully charged in about an hour and a half.

What's you TouchPad charger's output in mah? I think I might have to splice into a spare USB cable and check how much current is actually used by phone when on stock charger...pretty sure it is nowhere close to 1000mah.

2000mah is the output from the TP charger.

According to BatteryMonitorWidget, it estimates avg mA charging at 270mA using the stock charger that came with this particular phone.

I have my original charger from my Evo 4g and have noticed that it charges my phone a lot faster then the stock one that came with the phone. :-( weird
Sent from my SPH-D710 using Tapatalk

sfhub said:
According to BatteryMonitorWidget, it estimates avg mA charging at 270mA using the stock charger that came with this particular phone.
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That sounds about right! I'll see if I can test this with my AMP meter tonight and tell you all for sure on stock vs new samsung charger that I've got.

awesomeindeed said:
2000mah is the output from the TP charger.
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Yeah, at 2000mah it should charge in less than one hour...I would say your actual charge current to be around 1200mah...

i would be careful with these chargers.
i have dealt with a lot of Li-Po's in the past and there was a formula to how fast you should charge them.
i imagine it is the same deal with Li-On.
charging outside such formula could kill the life of your battery or worse.

Seems like i must have gotten lucky as a ton of people are having problems with their phone or chargers.
I just charged my battery from 0 to 100% off the stock charger in 2 and a half hours and i also havent gotten any of the dodgy input problems using the phone while charging.

I went back and took a longer look at the battery history when charging. When starting the charge at 65% it starts off around 828mA, then 540mA, then 360mA, so it looks like (as expected) the phone knows how much current to pull to charge the battery safely and it adjusts based on how full the battery is. Not saying it does this for the charger included with your phone, but that is the behavior for the charger included with this phone.
These are all estimates provided by Battery Monitor Widget because there is no real-time mA current meter in this phone (according to the author)

Ordered one of these. Stock charger takes a lifetime to charge the phone.

My GF got Nexus S 4G and it's stock charger also takes 6+ hours to charge, so there's something wrong with the chargers I guess...

The pins on this charger must me different than the stock charger. Just because the stock charger is rated up to 1Ah doesn't meant the phone or batteries circuitry allows that much output. The resistance and length of the USB pins on the cable are what determines the output of the charger. Simply using a different USB cable with the stock charger will get you faster charge times.
Using a 2Ah charger will get you nowhere, the circuitry doesn't allow that strong of a current. Just a bit of an FYI. Save your money and save your phone, use a different USB cable.
Also, how is the charge time holding up? I doubt you're getting a saturated charge with that charger.

SpaceMonky said:
i would be careful with these chargers.
i have dealt with a lot of Li-Po's in the past and there was a formula to how fast you should charge them.
i imagine it is the same deal with Li-On.
charging outside such formula could kill the life of your battery or worse.
Click to expand...
Click to collapse
Ive dealt with 1,2, and 3 cell lipos ranging from 150mah to 5000mah, and every one of them either say to be (or ive been told its recommended to do so) charged at 1C. so a 500mah battery should be charged at .5A, 1000mah at 1A, 5000mah at 5A, etc...
my lipo charger displays a bunch of info as the battery charges and it definitely drops the current as the battery gets closer to being fully charged. if its the same with li-on then I would imagine that .18A should be the most you would charge this battery, but Id rather it take a long time because unless things have changed recently, doesnt the slower you charge the battery prolong its life cycle as well as extend how long it lasts each charge? I only charge mine at night when I am sleeping so who cares if it takes longer than an hour. if I get into an emergency situation I have the cig lighter charger and in the worst case I even have one of those crank flashlights I can use to charge the phone in the event my car battery shorted out or something...

[Q] Battery charging too slow!?!?!

Charging time for my battery is pretty slow. I takes more than 3 hours from 10% to full! It doesn't matter if it is chraging with the carger or via USB. Is this normal with the Nexus? I had Htc Inspire 4G, and the charging took 2 hours top!
*if i use the phone while charging e.g. play some game, the battery is still draining instead of charging.
Sent from my Galaxy Nexus using xda app-developers app

You should get better results with an A/C charger but I've seen some wall adapters still read as if its plugged in via USB. You can check by going to settings >> battery while it's plugged in and it should read A/C charging.

ordevski said:
Charging time for my battery is pretty slow. I takes more than 3 hours from 10% to full! It doesn't matter if it is chraging with the carger or via USB. Is this normal with the Nexus? I had Htc Inspire 4G, and the charging took 2 hours top!
*if i use the phone while charging e.g. play some game, the battery is still draining instead of charging.
Sent from my Galaxy Nexus using xda app-developers app
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Click to collapse
What is the max current (mA) the charger you use can provide? Divide the capacity of your battery (in mAh) by the charge current. That is your approximate charge time in hours. I believe most AC chargers can charge with 1A, so a stock GSM battery of 1750 mAh should take less than 2 hours from being discharged to fully charged. Mine does.
The behavior that the GNEX will discharge even while being charged with a non AC charger (including car chargers) when gaming/navigating is not uncommon.

3rdstring said:
You should get better results with an A/C charger but I've seen some wall adapters still read as if its plugged in via USB. You can check by going to settings >> battery while it's plugged in and it should read A/C charging.
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Click to collapse
Yes, it's reading A/C charging, but the charger is from alcatel with 400mAh output.

Petrovski80 said:
What is the max current (mA) the charger you use can provide? Divide the capacity of your battery (in mAh) by the charge current. That is your approximate charge time in hours. I believe most AC chargers can charge with 1A, so a stock GSM battery of 1750 mAh should take less than 2 hours from being discharged to fully charged. Mine does.
The behavior that the GNEX will discharge even while being charged with a non AC charger (including car chargers) when gaming/navigating is not uncommon.
Click to expand...
Click to collapse
I've been charging it with Alcatel charger with 400mAh output. I'll try with Samsung charger with 5.0V output which says it's equal to 0.7A because I don't have the original (I think i have used it before, but i dont recall that it was any faster).
Could be kernel related issue, since there is an option to "Fast charge" via USB and it's enabled?

ordevski said:
I've been charging it with Alcatel charger with 400mAh output. I'll try with Samsung charger with 5.0V output which says it's equal to 0.7A because I don't have the original (I think i have used it before, but i dont recall that it was any faster).
Could be kernel related issue, since there is an option to "Fast charge" via USB and it's enabled?
Click to expand...
Click to collapse
its not likely a kernel issue unless you are on some experimental one, but you would be able to easily find out by looking at the forum cause others would have the issue. And if you didn't know the Fast Charge option is to make your phone think its hooked up to a wall port if you are charging from your laptop or if your car charger is only being used a usb port thing.

jv2543 said:
its not likely a kernel issue unless you are on some experimental one, but you would be able to easily find out by looking at the forum cause others would have the issue. And if you didn't know the Fast Charge option is to make your phone think its hooked up to a wall port if you are charging from your laptop or if your car charger is only being used a usb port thing.
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Click to collapse
It's franco kernel, nightly 251, pretty stable from what i've read in the thread. Also, I know what does Fast Charge option do, but I thought that somehow it messed something up. While I was googling for answers, I found some forum, where was mentioned the battery chip that is regulating the power it's using to charge the battery could somehow get messed up. Maybe I have bad batt.

mine battery too takes 3 hours to full charge using stock samsung wall charger. I'm using stock rom and kernel.

Mines takes 1 hr 30 minutes tops with fast charge
Sent from my Galaxy Nexus using xda app-developers app

You are using a 400mA charger, the gnex comes with a 1A one. Go figure.
Beamed from Maguro
---------- Post added at 07:42 AM ---------- Previous post was at 07:38 AM ----------
Petrovski80 said:
What is the max current (mA) the charger you use can provide? Divide the capacity of your battery (in mAh) by the charge current. That is your approximate charge time in hours. I believe most AC chargers can charge with 1A, so a stock GSM battery of 1750 mAh should take less than 2 hours from being discharged to fully charged. Mine does.
The behavior that the GNEX will discharge even while being charged with a non AC charger (including car chargers) when gaming/navigating is not uncommon.
Click to expand...
Click to collapse
That is because the car charger most likely did not short both the data pins out, therefore you notice the discharging phenomenon because the phone will only take in 500mA without the data pins shorted or with kernel fast charge enabled. How is 500mA going to keep up with navigation, GPS and all other tasks?
Beamed from Maguro

Also realize that your previous phones battery probably had a lower capacity than the gnex therefore coming from 2 hours, 3 hours isn't that bad for charging a bigger battery
Sent from my Galaxy Nexus using xda premium

ordevski said:
Charging time for my battery is pretty slow. I takes more than 3 hours from 10% to full! It doesn't matter if it is chraging with the carger or via USB. Is this normal with the Nexus? I had Htc Inspire 4G, and the charging took 2 hours top!
*if i use the phone while charging e.g. play some game, the battery is still draining instead of charging.
Sent from my Galaxy Nexus using xda app-developers app
Click to expand...
Click to collapse
I don't recommend using another charger I used a galaxy infuse 4g charger and in a week my battery got so hot it didnt even charge anymore
Sent from my Galaxy Nexus using xda premium

As has been stated get a GOOD quality charger. I might be weird but both my car charger and spare outlet charger came from Verizon. At least when i have had something not work they have been more than happy to open another and fully test in store for however long it takes. Sadly, my last car charger broke and I am too lazy to get another, my solution was to use a car inverter since I charge my other devices regularly on long trips. Plugging in a regular wall outlet from, oddly enough Motorola, does the job just fine. Alas, the majority of chargers my coworkers leave out are for lesser phones and will not even register on my beastly Nexus.

However i think i damaged my charger (original 1Ampere samsung wall charger) when i've been in Malta (i'm from Italy) last August. Before the holyday my nexus charged in 2 hours or less. During the holyday the charger heated a lot more than when using at home and now the charging process lasts about 3 hours. Also, when i connect the charger to the wall (even if the phone is unplugged) i hear a low almost-ultrasonic whistle.
I hope the damage isn't the battery.

Il_Tene said:
However i think i damaged my charger (original 1Ampere samsung wall charger) when i've been in Malta (i'm from Italy) last August. Before the holyday my nexus charged in 2 hours or less. During the holyday the charger heated a lot more than when using at home and now the charging process lasts about 3 hours. Also, when i connect the charger to the wall (even if the phone is unplugged) i hear a low almost-ultrasonic whistle.
I hope the damage isn't the battery.
Click to expand...
Click to collapse
I have the same problems too. I tried to use other charger, but the problem still remain. My charging process lasts about 2.30 h to charge from 55% to 100%. I really hate this because I need to charghe my phone faster. Please help us. (I'm italian too).

Ginuzzo50 said:
I have the same problems too. I tried to use other charger, but the problem still remain. My charging process lasts about 2.30 h to charge from 55% to 100%. I really hate this because I need to charghe my phone faster. Please help us. (I'm italian too).
Click to expand...
Click to collapse
Same problem here with another charger, and also via USB with Fast Charge enabled!

ordevski said:
Same problem here with another charger, and also via USB with Fast Charge enabled!
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Click to collapse
Where did you find the settings to set the Fast Charge?

Ginuzzo50 said:
Where did you find the settings to set the Fast Charge?
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Click to collapse
With a custom kernel.

Ginuzzo50 said:
Where did you find the settings to set the Fast Charge?
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Click to collapse
I'm using CodenameAndroid ROM, which has kernel that allows you to enable Fast Charge. It's located in Settings --> Performance --> Kernel controls --> USB fast charge

you tslees
ordevski said:
I'm using CodenameAndroid ROM, which has kernel that allows you to enable Fast Charge. It's located in Settings --> Performance --> Kernel controls --> USB fast charge
Click to expand...
Click to collapse
Thank you very much. And the effective result is really a faster charging? Does it works good or not?

Charging speed

To power up, you consume Red Bull. But your phone just needs its adaptive fast charger. Rate this thread to express how quickly the ZTE Axon 7 can charge. A higher rating indicates that it charges extremely fast.
Then, drop a comment if you have anything to add!

On Quick Charge, it's fast. On a older computer, it's painfully slow. In my car, on a standard charger, it's not too bad. I just bought a QC 3.0 charger for my car and it'll charge about 30% in my 35 minute drive home (have to test that some more).

tele_jas said:
On Quick Charge, it's fast. On a older computer, it's painfully slow. In my car, on a standard charger, it's not too bad. I just bought a QC 3.0 charger for my car and it'll charge about 30% in my 35 minute drive home (have to test that some more).
Click to expand...
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I would double check the charger port and make sure your plugging into the QC 3.0 port, and not the 2.0A port (not sure if yours has one as well or not) my Axon 7 charges about 45-50% in my 25 minutes ride home so It doesnt sound like its charging quite as fast, unless its QC2.0

musicdjm said:
I would double check the charger port and make sure your plugging into the QC 3.0 port, and not the 2.0A port (not sure if yours has one as well or not) my Axon 7 charges about 45-50% in my 25 minutes ride home so It doesnt sound like its charging quite as fast, unless its QC2.0
Click to expand...
Click to collapse
Which car charger you have?
Στάλθηκε από το HUAWEI M2-A01W μου χρησιμοποιώντας Tapatalk

Have tried to push the battery as hard as I can while charging at the same time. The phone won't stall or drop charge thankfully. Gets a little hot but nothing like other phones I've owned (Nexus 6P would boil, OnePlus one would slowly drop battery until it died, iPhone 5s would get too hot to touch, HTC M7 would also become too hot to touch and unresponsive). If you're wondering if you can use this phone with GPS, Bluetooth, Wifi Hotspot, Data, Spotify while charging at the same time you can.

B27 A2017U, From 37% to 95% in 45 minutes. 5 minutes of screen and one 5 min call during charging. I won't use fast charge often because I don't need it, battery health is more important to me.

Charging speed is very fast. Battery life is great. I usually have ~20% left after running it from about 6AM to 11PM. I did misconnect the charger dongle one night, and so was at 11% starting the day. I switched to ultra power saving mode and was at 10% at the end of the day!?!

Charging speeds tbh are fairly decent. On QC 3.0 i get about 95% in about 1 hour. Nothing compared to Dash charge on the OP3, that method is insanely fast. To compare OP3's 3000 mah takes about 40~45 minutes to top off. Considering the additional 250maH on the Axon, i think the 1 hour approx charging time is good. I suppose once you get the taste of Dash charging, QC becomes less palatable
P.S. Axon's power saving mechanisms are actually quite good. No need for any 3rd party apps. I don't miss Greenify considering the background apps get killed when the screen goes off. So battery life being decent is a good trade off.

I've been impressed by the charging speed. It's close to the Moto X Pure that I loved.

I've personally never had a phone that had any type of quick charge until this phone, so I'm certainly impressed.

Hello
Question: is QC3 a killer of battery? Is charging at low amp better, or...? Cuz I read here and there that it's still better to use a slow speed charging device so that the battery doesn't heat up and doesn't wear off too fast.
What are your thoughts about that?

LeKeiser said:
Hello
Question: is QC3 a killer of battery? Is charging at low amp better, or...? Cuz I read here and there that it's still better to use a slow speed charging device so that the battery doesn't heat up and doesn't wear off too fast.
What are your thoughts about that?
Click to expand...
Click to collapse
If you charge it before you sleep, I would use a charger with a lower am so it can prolong the battery's life. Using quick charge 3.0 is convenient, but it will certainly decrease the battery's life over a period of time.
Before bed: Not recommended to use another adapter to charge any phone that didn't come with it, but I would use a different adapter with a slower charging rate and voltage.
When you're about to go out or etc: Quick charge 3.0
Sent from my ZTE A2017U using XDA-Developers mobile app

I use the Aukey charger. I have 2 portable QC3 and one "traditional" QC3 also. And I forgot which brand but a good one as a slow speed charger.
I thought that QC3 was different than the "old" high speed charger because it had something to do directly with the SnapDragon. The "old" high speed chargers are just sending more amps like 2A or more, while QC3 is more "controlled" so it didn't affect the battery. Am I totally wrong?

Has anyone noticed their charging time increase by 10-20 minutes or so? Could be my imagination as I also have an op3 now..

MrWilsonxD said:
Has anyone noticed their charging time increase by 10-20 minutes or so? Could be my imagination as I also have an op3 now..
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Click to collapse
Probably your imagination. Dash charge is much faster that QC. If your phone's charging up in an hour it's fine.

bonk3rzzz said:
Probably your imagination. Dash charge is much faster that QC. If your phone's charging up in an hour it's fine.
Click to expand...
Click to collapse
even faster than QC3.0?

LeKeiser said:
even faster than QC3.0?
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Click to collapse
Oh yes absolutely. I came from an OP3 to Axon. It's the only thing I miss about the OnePlus 3. And the ROM. And the front finger print scanner. And updates.
On a more serious note, Dash charge is really fantastic. As advertised. 3000 mAh takes 40 to 45 mins, but the most important feature is that it doesn't heat the phone up and using the OP3 while charging is a better experience.

Nice
I think QC3 is already pretty fast, so... Charging low speed when I'm not in a rush, following some (your?) advices here.
I had ordered a 1+3 and canceled when I saw the Axon7, but I had also a Dash Charger on the way and couldn't cancel that one. Too bad they're two different technologies
The 1+3T is... nice

LeKeiser said:
Nice
I think QC3 is already pretty fast, so... Charging low speed when I'm not in a rush, following some (your?) advices here.
I had ordered a 1+3 and canceled when I saw the Axon7, but I had also a Dash Charger on the way and couldn't cancel that one. Too bad they're two different technologies
The 1+3T is... nice
Click to expand...
Click to collapse
Yeah i absolutely hate the existence of the op3t cause it has everything that op3 didn't. And yeah don't use the dash charger with anything else unless you like watching things getting smoked up.

LeKeiser said:
Hello
Question: is QC3 a killer of battery? Is charging at low amp better, or...? Cuz I read here and there that it's still better to use a slow speed charging device so that the battery doesn't heat up and doesn't wear off too fast.
What are your thoughts about that?
Click to expand...
Click to collapse
I don't trust it to keep the battery in good condition over a long time. So I use a normal charger instead.

Is there a way to turn off the fast charging in the OS?

I plan to use this phone for many years, so I'm worried that the fast charging might do damage to the battery in the long term or shorten its lifespan, so I'd rather charge it "slower". Is there a way to turn off the fast charging in the OS? Or is my worry unsubstantiated?

513263337 said:
I plan to use this phone for many years, so I'm worried that the fast charging might do damage to the battery in the long term or shorten its lifespan, so I'd rather charge it "slower". Is there a way to turn off the fast charging in the OS? Or is my worry unsubstantiated?
Click to expand...
Click to collapse
You made my night... Slower charger kills battery not fast charging.. fast charge save battery to be honest. And you dont have to be worry since the batteries now are LI-lon . Go get info in google about the batteries . All i can say you got infos wrong.
Sent from my ONEPLUS A3003 using XDA-Developers mobile app

Agree with previous post. But if it makes you feel better, just don't use a dash charger...
Very simple.

lummujaj said:
You made my night... Slower charger kills battery not fast charging.. fast charge save battery to be honest. And you dont have to be worry since the batteries now are LI-lon . Go get info in google about the batteries . All i can say you got infos wrong.
Sent from my ONEPLUS A3003 using XDA-Developers mobile app
Click to expand...
Click to collapse
OK. I didn't know.
I was speaking from my past experience with Samsung Galaxy Note 4. I bought couple of original Samsung batteries and rotate them throughout daily usage. I noticed a significant difference in battery life comparing the ones that I used fast charge on vs the ones I didn't. After that I stick to NOT using fast charge.
Of course, that's nothing scientific. And Samsung uses a different fast charge mechanism (higher voltage) than OnePlus (higher current), so there could be difference there too.

Because Dash Charge seems to be re-labeled Vooc charging from OPPO, I can tell you, that the last two years with charging minimum one times every day, there is no bad effect on the battery (still the first one).
Sent from my Find7 using XDA-Developers mobile app

513263337 said:
OK. I didn't know.
I was speaking from my past experience with Samsung Galaxy Note 4. I bought couple of original Samsung batteries and rotate them throughout daily usage. I noticed a significant difference in battery life comparing the ones that I used fast charge on vs the ones I didn't. After that I stick to NOT using fast charge.
Of course, that's nothing scientific. And Samsung uses a different fast charge mechanism (higher voltage) than OnePlus (higher current), so there could be difference there too.
Click to expand...
Click to collapse
Samsung devices are notorious for killing batteries and its more likely hardware than it is the battery itself, u will be fine

I have a similar question: does it make any problem if I leave the phone in (dash) charge for the whole night? I mean, if I sleep for 7hrs I'll have 1h of fast charging and 6hrs of nothing-but-charger-heating. Will this habit hurt the phone's battery or the charger itself?

513263337 said:
I plan to use this phone for many years, so I'm worried that the fast charging might do damage to the battery in the long term or shorten its lifespan, so I'd rather charge it "slower". Is there a way to turn off the fast charging in the OS? Or is my worry unsubstantiated?
Click to expand...
Click to collapse
I use Samsung 1.5 Amp charger and keep my battery between 40% to 80%
I think these are best for long term usage.

repsol89 said:
I have a similar question: does it make any problem if I leave the phone in (dash) charge for the whole night? I mean, if I sleep for 7hrs I'll have 1h of fast charging and 6hrs of nothing-but-charger-heating. Will this habit hurt the phone's battery or the charger itself?
Click to expand...
Click to collapse
I used a samsung S3 before and overnight charging killed my battery! Bless samsung for making battery removable on S3!
If i were you, I wouldn't leave my precious OP3 on an all-night charge.

iam_adarsh said:
I used a samsung S3 before and overnight charging killed my battery! Bless samsung for making battery removable on S3!
If i were you, I wouldn't leave my precious OP3 on an all-night charge.
Click to expand...
Click to collapse
Well, it was my first thought, but everyone in this topic is telling me that OP works different than Samsung!

iam_adarsh said:
I used a samsung S3 before and overnight charging killed my battery! Bless samsung for making battery removable on S3!
If i were you, I wouldn't leave my precious OP3 on an all-night charge.
Click to expand...
Click to collapse
that's the problem of the charger or the phone itself. thecharger is designed not to charge when the battery is full. What I want to say is you experienced an accident and sorry for you.
The most serious threat to the battery is high temperature. OnePlus 3 reduce the charging heat by its dash charge. The dash charge pushes low voltage directly to the phone, which mitigates the heating problem by pushing high electric current and making the voltage transition process in dash charger. Most of other phones still use high voltage because they fail to create high current. recalling the physics in high school, the power is current multiplied by voltage and energy equals to power multiplied by time. than you would understand the powerful feature of dash charge

dlhxr said:
that's the problem of the charger or the phone itself. thecharger is designed not to charge when the battery is full. What I want to say is you experienced an accident and sorry for you.
The most serious threat to the battery is high temperature. OnePlus 3 reduce the charging heat by its dash charge. The dash charge pushes low voltage directly to the phone, which mitigates the heating problem by pushing high electric current and making the voltage transition process in dash charger. Most of other phones still use high voltage because they fail to create high current. recalling the physics in high school, the power is current multiplied by voltage and energy equals to power multiplied by time. than you would understand the powerful feature of dash charge
Click to expand...
Click to collapse
The power is current multiplied by voltage so what's the difference between high current mutiplied by low voltage versus low current multiplied by high voltage ?
2V x A = V x 2A

lapocompris said:
The power is current multiplied by voltage so what's the difference between high current mutiplied by low voltage versus low current multiplied by high voltage ?
2V x A = V x 2A
Click to expand...
Click to collapse
qc3.0 uses low current and high voltage. Dash uses high current and low voltage. As a result, they have similar power and both charge quickly. However, the heating problem is more serious for qc 3.0. The difference of the battery voltage and charger voltage is the leading factor that determines the transition efficiency. The bigger the difference is, the more heat charging process generates.
So~ you could look up for qc3.0. for mi 5, it has three adaptive mode: 5V2.5A、9V2A、12V1.5A. for dash, we have 5V4A

repsol89 said:
I have a similar question: does it make any problem if I leave the phone in (dash) charge for the whole night? I mean, if I sleep for 7hrs I'll have 1h of fast charging and 6hrs of nothing-but-charger-heating. Will this habit hurt the phone's battery or the charger itself?
Click to expand...
Click to collapse
There is no problem with leaving your phone on the charger. I do this with every phone since years.
If people experience something bad with it, their phone or battery are broken. The current tech just keeps the battery at full capacity once it's full. Never had any problem.

So many "opinions" but mostly incorrect. The answer to the OPs question is that you don't have to worry about quick charge destroying your battery. It will not have significant impact on your battery capacity. I would have been more worried about breaking the usb type-c port(see point 2 below). All things considered, after 2-3 years you will probably buy a new phone anyway and also you can always buy a replacement battery cheap. But you can simply use a normal charger which delivers <3A with 5V so you don't have to worry about anything.
1- Slow charge does not damage lithium-ion chemistry batteries. You can read about lithium-ion charging here. But neither fast charge will damage lithium-ion as long as the battery temperature is not extremely high. Also temperature at different charge stages effect the capacity decrease (source) But you will be fine as long as the battery temperature is less than 45C. The charging IC should stop the charging process if it exceeds it anyway.
2- Qualcomm's quick charge is much better than voop/dash charge from an engineering standpoint. This is why also USB organization's power delivery (PD) standard uses similar scheme. The problem is the cable and the connector. The maximum allowed current at 5V is 3A with usb type-c connector (source). If you provide more current, you need to use a thicker cable(dash/vooc cables). But you can't change the connector, and it may damage your connector in the long run to use 3+A currents to charge. Because there is a contact resistance (R) and the power lost in the connector is square of current (I) times R. Meaning R*I^2, it will wear off the connector faster. This is why some companies with some engineering skills opt in to use higher voltages instead of higher currents.
3- You can't push more current to lithium-ion battery than it accepts. The maximum current is voltage delta (between charging voltage and battery voltage) divided by internal resistance. This is why you can charge empty battery much faster. If you use an app like Ampere from play store, you can see the voltage of your battery before and after you plug in your charger. If you plug in a normal charger, you will see that it goes up a little bit. If you plug a quick charger it goes up to ~4.35V
4- Yes, there is conversion inefficiencies for quick charge inside the phone, and it will warm up the "phone" and battery only indirectly. The conversion IC are normally >90% efficient (source). This does not mean that your battery will be destroyed. It is perfectly fine to charge lithium-batteries with up to 45C temperatures (source).
4- If overnight charging killed your battery, your battery was faulty (or you had 3rd party battery?). The battery should be capable of holding 4.35v charge. You would need to store battery at 4.35V full charge for over 3 months to loose 20% capacity (http://batteryuniversity.com/learn/article/how_to_store_batteries). Having full charge few hours overnight won't destroy it unless your battery or device is faulty.
With all this information, I would rather opt in for USB-PD/Qualcomm Quick Charge solutions than VOOC/DASH solutions. I think eventually only USB-PD will remain and everybody will use it as a standard only.

Wall Charger 1Amp or 1.5

Hello guys,
To offert at my battery the best treatment I'm looking for a lower amperage wall charger for my Pixel 2XL.
Between 1 and 1.5 Amp it will be excellent. I read some interesting suties about battery life and how manage it and fast charge is part of that.
Thank you all anf have good evening.

I am sure it will charge on either one, but how fast who knows? If you are rooted and have Magisk, download the ACC module and you can control your charging that way instead.

Le_Combattant said:
Hello guys,
To offert at my battery the best treatment I'm looking for a lower amperage wall charger for my Pixel 2XL.
Between 1 and 1.5 Amp it will be excellent. I read some interesting suties about battery life and how manage it and fast charge is part of that.
Thank you all anf have good evening.
Click to expand...
Click to collapse
Older USB chargers are mostly slow 1A chargers, like the cube Apple chargers

Droid_Nut said:
I am sure it will charge on either one, but how fast who knows? If you are rooted and have Magisk, download the ACC module and you can control your charging that way instead.
Click to expand...
Click to collapse
I'm not rooted and I don't think I gonna it

Le_Combattant said:
Hello guys,
To offert at my battery the best treatment I'm looking for a lower amperage wall charger for my Pixel 2XL.
Between 1 and 1.5 Amp it will be excellent. I read some interesting suties about battery life and how manage it and fast charge is part of that.
Thank you all anf have good evening.
Click to expand...
Click to collapse
I am an electrical engineer, and have some knowledge about how Li batteries function.
I have always wondered this, I always see people mentioning that slower charging is better for the longevity of Li-ion batteries. There is always a trade-off here. Slower charging also means the battery takes much longer to charge, and the battery stays hotter for longer period of time, which should affect it's lifetime. Fast charging also does the same thing, but the temperature is much hotter but is exposed for shorter period of time.
Now these is merely a speculation on my part, I don't have any theoretical or experimental evidence to back this up - I think regular 5V 2A charging is a balance between those two scenarios.
Also, I recall that the peak charging current is limited in P2XL, so using the stock charger shouldn't harm that much either.

Pixel 2XL is my first smartphone who do not Come hot when it charge so...
But I know that high temperature are not the best things for battery in general.
And about the level of charge ? Some people said they stop at 80% to manage battery

suhridkhan said:
I am an electrical engineer, and have some knowledge about how Li batteries function.
I have always wondered this, I always see people mentioning that slower charging is better for the longevity of Li-ion batteries. There is always a trade-off here. Slower charging also means the battery takes much longer to charge, and the battery stays hotter for longer period of time, which should affect it's lifetime. Fast charging also does the same thing, but the temperature is much hotter but is exposed for shorter period of time.
Now these is merely a speculation on my part, I don't have any theoretical or experimental evidence to back this up - I think regular 5V 2A charging is a balance between those two scenarios.
Also, I recall that the peak charging current is limited in P2XL, so using the stock charger shouldn't harm that much either.
Click to expand...
Click to collapse
I use a 5 watts charger and the phone stay completely cold during the charge process.
Also there was a recent 2017 scientific paper that tested what degraded the battery. It's a really interesting read with many tested model.
https://www.researchgate.net/profil...e-model-under-different-charging-stresses.pdf
Number 1 cause is high battery voltage at the end, second one is battery charging speed. Any speed faster than 1c will degrade the battery much faster.
This is why i charge at 5w plus stop charging at 80% (unless i know I'll need 100% that day, where i fully charge, but for my usage 80% is more than enough for the usual day).

von_block said:
I use a 5 watts charger and the phone stay completely cold during the charge process.
Also there was a recent 2017 scientific paper that tested what degraded the battery. It's a really interesting read with many tested model.
https://www.researchgate.net/profil...e-model-under-different-charging-stresses.pdf
Number 1 cause is high battery voltage at the end, second one is battery charging speed. Any speed faster than 1c will degrade the battery much faster.
This is why i charge at 5w plus stop charging at 80% (unless i know I'll need 100% that day, where i fully charge, but for my usage 80% is more than enough for the usual day).
Click to expand...
Click to collapse
I charge my phone every 48h and when it is full I unplug it from wall charger. And I charge it from 20-25% (some time I go lower because of my usage)
It's your famous amazon wall charger?

Le_Combattant said:
I charge my phone every 48h and when it is full I unplug it from wall charger. And I charge it from 20-25% (some time I go lower because of my usage)
It's your famous amazon wall charger?
Click to expand...
Click to collapse
I download AccuBattery and charge my phone from 25% to 80% max. The app detect directly the stock capacity of my battery (3520mAh) but after my charge, the new capacity estimated is 2982%. Is the first value is reliable or I have to do some other charges?

You have to wait for about 10 cycles. It says in the application something like that.