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Battery temperature during charging

What's the normal temp during charging? I notice when on charging mode,I can really feel the heat on the phone. Initially I thought it was cpu until I use an app to verify. Its showing 47celcius. Should I ask for a replacement?
Sent from my GT-N7000 using XDA App

foochuangyeh said:
What's the normal temp during charging? I notice when on charging mode,I can really feel the heat on the phone. Initially I thought it was cpu until I use an app to verify. Its showing 47celcius. Should I ask for a replacement?
Sent from my GT-N7000 using XDA App
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47 is very high i guess , normal is between 36-42 celcius. Check if many apps are running in the background while charging . Download cpu spy in the market to check if the cpu goes in deep sleep or not.

mine the temperature goes up only in one case
when I am surfing the net while the device is charging
while only charging the temperature is OK. Also if I am surfing and not charging it is OK
I also don't think that 47 has any threat on the device

Mine idle's around 22°C, hits 29°-31°C when charging on a 1A (1000mA) charger, and during usage hits 29°-33°C during high usage with occasional, brief peaks as high as 40°C. If your charger puts out more current, I could see the battery getting hotter, but 47°C seems too hot to me. I'd look into getting it exchanged, unless you have something running full blast while charging on a 2A charger. How's your battery life?

my battery life is ok..deep sleep working well at high percentage...i left wifi own downloading some data for games, not sure if that will make the battery warm up?

Phone charging at 500mA

as the title says, my G2 is charging at barely 500mA. while earlier it used to do at 1600mA. Now the charging speed is painfully slow.
Using stock charger and cable, just like before.
D80220b-HKG. Total Stock. Unrooted.
any solution?
Sent from my LG-D802 using Tapatalk

wao
really helpful forum.
anyway i found the cause. Gsam helped a lot.
It's because of hot weather these days.
Normally battery temperature is between 30-35 °C. When i plug in to charge, it starts fine at 1600mA, but battery temperature also begins to rise and as soon as battery hits 36°C, thermal throttle kicks in and charging rate drops to 500mA to keep the temperature down.
In winter didn't have this throttling.
Also if the phone is turned off then it doesn't care about temperature and charge at full speed all the way. But when it is ON, it intelligently negotiates charging rate depending on thermal conditions.
Sent from my LG-D802 using Tapatalk

gull_s_777 said:
as the title says, my G2 is charging at barely 500mA. while earlier it used to do at 1600mA. Now the charging speed is painfully slow.
Using stock charger and cable, just like before.
D80220b-HKG. Total Stock. Unrooted.
any solution?
Sent from my LG-D802 using Tapatalk
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Click to collapse
Hi, what utility do you use to know how mutch MA charge your lg g2? thanks

falconhawk81 said:
Hi, what utility do you use to know how mutch MA charge your lg g2? thanks
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Gsam battery monitor
i think this thermal throttle came in after recent D80220b update.
really annoying though. i have lost quick recharge capability.
any way to bypass it? 500mA is way to slow
Sent from my LG-D802 using Tapatalk

falconhawk81 said:
Hi, what utility do you use to know how mutch MA charge your lg g2? thanks
Click to expand...
Click to collapse
Lg hidden menu show the same info.

atifsh said:
Lg hidden menu show the same info.
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Click to collapse
Hi, where? in battery info?

Hidden menu, charging

So no solution guys?
If i turn it off and then plug in the charger, it charges fast like before (1% in 1 minute).
But when turned ON, it negotiate really slow charging rate and phone feels just cold from back side. When it used to charge fast, then little heat could be felt on back cover.
Right now if i want to Keep it ON and charge at full rate, i have to keep battery temperature under 35°C which can only be done if i keep it in front of AC or in refrigerator.

Gsam is just guessing the rate based o charge before and charge after.
When it is charging slow go to settings and batter and check what it's detected as charging with will say AC or USB.
Sent from my LG-D802 using XDA Free mobile app

gull_s_777 said:
wao
really helpful forum.
anyway i found the cause. Gsam helped a lot.
It's because of hot weather these days.
Normally battery temperature is between 30-35 °C. When i plug in to charge, it starts fine at 1600mA, but battery temperature also begins to rise and as soon as battery hits 36°C, thermal throttle kicks in and charging rate drops to 500mA to keep the temperature down.
In winter didn't have this throttling.
Also if the phone is turned off then it doesn't care about temperature and charge at full speed all the way. But when it is ON, it intelligently negotiates charging rate depending on thermal conditions.
Sent from my LG-D802 using Tapatalk
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Click to collapse
my gf lg g2 doesen't charge.. 8 hours for a full charge..
i'll check for thermal issue, but why only few phones have that problem? i asked in a forum and many people with lg g2 saw that's not normal..

gull_s_777 said:
So no solution guys?
If i turn it off and then plug in the charger, it charges fast like before (1% in 1 minute).
But when turned ON, it negotiate really slow charging rate and phone feels just cold from back side. When it used to charge fast, then little heat could be felt on back cover.
Right now if i want to Keep it ON and charge at full rate, i have to keep battery temperature under 35°C which can only be done if i keep it in front of AC or in refrigerator.
Click to expand...
Click to collapse
Turn off thermal throttling in the 'hidden menu'.
There is also a throttle for when the phone gets too cold, FYI.

Fast Wireless Charger - Slow...

I've got the Samsung Fast Wireless Charger, a un-rooted G935FD, the original USB cable and the original charger. And it's really slow...
When I put the phone on the wireless charger, it says Fast Charging, gives me a time, say 93% - 17 minutes approx. But the reality is it will take about an hour. This is without turning the screen on, just leaving it untouched on the charger. The Wireless Fast Charge box is ticked, normal fast charging via the USB cable works.....any idea why wireless charging is so slow?
Thanks.

i have the same issue. Anu sugestion?

its about battery heat vs lifetime; best 'fast charging' timefrae/chargeframe is between 20% and 80%; before 20 it will be slow, after about 80 it will be slow. slower as its closet to 100%, and the reciprocal is true from 20 to 0%.

Slade8525 said:
its about battery heat vs lifetime; best 'fast charging' timefrae/chargeframe is between 20% and 80%; before 20 it will be slow, after about 80 it will be slow. slower as its closet to 100%, and the reciprocal is true from 20 to 0%.
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I understand this, but the times should be reflected more accurately in the estimates. They are completely wrong most of the time.

liquidguru said:
I understand this, but the times should be reflected more accurately in the estimates. They are completely wrong most of the time.
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agreed, but i would bet the system simply takes the AVERAGE time to charge per PERCENT of battery life, multiplied by PERCENT REMAINING, and displays that result in minutes. case in point; S7 Active Fast Wireless Charger, from 25 to 35% in about 4 minutes; phone says 9 minutes; first time i use it, AWESOME!
next time 80-100%, phone says 18 minutes. Actual time about 30 minutes.

Mine is the same, but it's slow throughout the whole charge from 4-5% to 100%. It says approx 2 hours but it takes about 4. I am using the official samsung fast charging stand.

Does this wireless charger stop charging when reaches 100%? I heard that it has auto shut off when fully charged. I leave mine to charge over night on normal charge rate not fast. I know it is fully charged hours before I wake, but when I wake up the phone is still very warm. Just thought that if it auto stopped charging hours ago the phone would of cooled down.
Sent from my SM-G935F using Tapatalk

dannybee1 said:
Does this wireless charger stop charging when reaches 100%? I heard that it has auto shut off when fully charged. I leave mine to charge over night on normal charge rate not fast. I know it is fully charged hours before I wake, but when I wake up the phone is still very warm. Just thought that if it auto stopped charging hours ago the phone would of cooled down.
Sent from my SM-G935F using Tapatalk
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yes, but it keeps topping it off/sensing if its fully charged or not.

Galaxy S7 Edge Fast charging too slow

Hi everyone,
I have a galaxy s7 edge and i think that i have a problem with the fast charging feature, but i am not sure so i wanted to ask here.
As i know the phone supports fast charge 2.0 which should charge from 0-60% in 30 minutes. The phone charges fast, and it says that it uses fast charge, but it is just half the speed, normaly it charges 1% per minute, so that means it takes 60 minutes for 60%. Is that normal or should it charge faster, and if it should charge faster, what could be the issue, i am ussing the original charger which came with the phone.

I wondered that also. It takes close to 1 1/2 hours for be to charge. 0-60 never gets done in 30 minutes for me.

Do you keep turning on the screen to check progress? Quick Charge doesn't work while the screen is on.

meyerweb said:
Do you keep turning on the screen to check progress? Quick Charge doesn't work while the screen is on.
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Hello,
No, it does not matter, even if i do not touch the phone while it is charging it never gets the speed as it is advertised, only half of the speed. Does the always on matter in this point, because i have it enabled?

I think the 3600 mAh battery has something to do with it. It's a big battery. Those stats are likely for a smaller capacity battery.
Sent from my SM-G935T using Tapatalk

Those stats are for when the phone is turned off and you put it on charge...

How long does it take you to charge from 0-100 without touching the phone? It should take around 1.5 hours.

arnes_king said:
Hello,
Does the always on matter in this point, because i have it enabled?
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That's a good question. I don't know. Turn it off next time you charge and see if it makes a difference.

My note 5 used to charge from 2-100 in 70 minutes. The s7 edge takes 30 minutes more for me. Guessing it's the battery. Also, if you're using the phone and fast charging is on, it'll charge slower than if you were to turn off fast charging. Meaning, if you're using your phone and charging it, better off turning off fast charging since the regular charging will charge it faster while using the phone
Sent from my SM-G935F using Tapatalk

Hi.
I one (only once) noticed that my S7E didn't charge well even though plugged in to original charger and cable. Somehow the cable wasn't connected tight on the charger side. This was causing the problem of showing fast charging on the display but slow charging actually.
Atm I'm charging and monitored the progress:
start charging at 1 %
10 min 15 %
20 min 27 %
30 min 37 %
41 Min 50 %
1h 8 min 80 %
1h 40 min 100 %

Fast charger works fine with charger you get phone. Fast wireless charger doesn't work as fast for me. If you leave the phone alone, honestly it does charge fast

maroc84 said:
Hi.
I one (only once) noticed that my S7E didn't charge well even though plugged in to original charger and cable. Somehow the cable wasn't connected tight on the charger side. This was causing the problem of showing fast charging on the display but slow charging actually.
Atm I'm charging and monitored the progress:
start charging at 1 %
10 min 15 %
20 min 27 %
30 min 37 %
41 Min 50 %
1h 8 min 80 %
1h 40 min 100 %
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Click to collapse
My phone charges in about the same time, even i have fast charge disabled.
Sent from my SM-G935F using XDA-Developers mobile app

[email protected] said:
My phone charges in about the same time, even i have fast charge disabled.
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Even if you disable fast charging?
This shouldn't be the case. When I disable fast charging it shows a couple of hours remaining till fully charged, don't know exactly how much.
Sent from my Samsung Galaxy S7 Edge using XDA Labs

maroc84 said:
Even if you disable fast charging?
This shouldn't be the case. When I disable fast charging it shows a couple of hours remaining till fully charged, don't know exactly how much.
Sent from my Samsung Galaxy S7 Edge using XDA Labs
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With disabled fast chargeing starting from 22% estimate 1 hour 35 minutes
With fast charging enabled 1hour 21 minutes.
Sent from my SM-G935F using XDA-Developers mobile app

[email protected] said:
With disabled fast chargeing starting from 22% estimate 1 hour 35 minutes
With fast charging enabled 1hour 21 minutes.
Sent from my SM-G935F using XDA-Developers mobile app
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That was about the same as mine last night when I started charging around 22%. Strange how there isn't much difference in the timings.

maroc84 said:
Hi.
I one (only once) noticed that my S7E didn't charge well even though plugged in to original charger and cable. Somehow the cable wasn't connected tight on the charger side. This was causing the problem of showing fast charging on the display but slow charging actually.
Atm I'm charging and monitored the progress:
start charging at 1 %
10 min 15 %
20 min 27 %
30 min 37 %
41 Min 50 %
1h 8 min 80 %
1h 40 min 100 %
Click to expand...
Click to collapse
Also same in my case.

Tried mine yesterday and took about 1 hour, 35 mins from 0 to 100%

My s7 edge (though using s6 active fast charger), showed 42% at start of fast charge.. after 30 minutes it had only gone to 51% or about 9% gain.. not normal.. i tried the same test with an s6 active and it gained about 15% or more in 15 minutes (not 30).
Still trying to rule out the charger, but i noticed this same slowness last nite on the native s7 edge charger.. so i dont think its the charger..
edit: after wiping system partition cache.. 16 minute test i jumped 8% .. i guess this is more normalish though still a tad low.

I would like to verify the same as some users explained.
Fast charge does charge quick in my phone, maybe not as quick as expected.
But i normally leave fast charge disabled, heavy user and dislike picking the device in when its warm.
I was about to pop out, device had like 5-10% battery.
Plugged it in and it said 2 hours to charge.
Unplugged, Enabled fast charge, time went to 1 hour 25 minutes.
So it chopped around 30 minutes off the charging time.

hi, I don't know if this's the place, but I am on stock firmware for s7 (g930f) and it charges really slow (like 4 hours to full charge), does anybody know why? (original charger)

0-100% charging time more than 1hr 30mins

I got USA version..
Is just 3 days I have this mobile.
It took sweet 1hr 30 mins + to charge from 0 - 100%
First 50% was in just over 30 mins..
In between 50%-100% screen was on for 10 mins with 8 mins whatsapp chatting and 2 mins whatsapp call..
95-100% took just over 20 mins..
Is this normal charging speeds for QC 3.0
Or I got a defective piece..
Please let me know..

ganesh.htc said:
I got USA version..
Is just 3 days I have this mobile.
It took sweet 1hr 30 mins + to charge from 0 - 100%
First 50% was in just over 30 mins..
In between 50%-100% screen was on for 10 mins with 8 mins whatsapp chatting and 2 mins whatsapp call..
95-100% took just over 20 mins..
Is this normal charging speeds for QC 3.0
Or I got a defective piece..
Please let me know..
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Click to collapse
You're using the device while it is charging? That's going to cause some overheating and many other issues. Try charging it without using it and see if the results change.
Sent from my ZTE A2017U using XDA-Developers mobile app

That's how every li-ion battery charges. That's normal. This is precisely why manufacturers advertise 0-60% (or close) charge time instead of how long it takes a phone to fully charge

OP, give this a read - http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries .
tl;dr charge rate isn't linear.

mmamedov said:
That's how every li-ion battery charges. That's normal. This is precisely why manufacturers advertise 0-60% (or close) charge time instead of how long it takes a phone to fully charge
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Thank you

troy5890 said:
You're using the device while it is charging? That's going to cause some overheating and many other issues. Try charging it without using it and see if the results change.
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Click to collapse
I will try to not use phone and check the stats again
Thank you

All recent phones have a logic chip which decideds the rate of charage in order to minimize the effects of quick charging on battery life and to avoid overheating. Slowing down the rate of charging the closer to %100 is done in order to protect the longevity of battery life, the chemical process involved in charging is not %100 efficient and the higher the rate of charging close to capacity the less efficient it is, this translates to permanent loss of charging capacity next time you run the charging process. Temperature also affects the rate of charging the logic chip dictates. If its too cold it slows down the rate until it heats up to optimal range. If the battery didn't have a temp sensor you could make it loose %90 of its capacity simply putting it in the freezer then QC charging it. If its too hot there is a risk of overheating and fire, so if you are running resource intensive apps your rate of charge will drop to avoid excess overheating. There is NO danger in using the phone while it is charging, even resource intensive games