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Hey everyone, what are your battery temperatures during heavy usage? More specifically, while watching a movie, playing a game, or even surfing the web, where the phone can get unusually warm?
My battery temperature has reached as high as 47 degrees celsius. I am concerned considering if you take a look at your battery, there's a sign on it saying that it shouldn't go above 40 degrees celsius/104 degrees fahrenheit.
andonnguyen said:
Hey everyone, what are your battery temperatures during heavy usage? More specifically, while watching a movie, playing a game, or even surfing the web, where the phone can get unusually warm?
My battery temperature has reached as high as 47 degrees celsius. I am concerned considering if you take a look at your battery, there's a sign on it saying that it shouldn't go above 40 degrees celsius/104 degrees fahrenheit.
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my phone starts feeling hot at around 86 degrees F. i have a setcpu profile to underclock when the phone is about 85 degrees because i dont like the heat and i figure its not good for the battery to be so hot. before setcpu, i was at around 90 during heavy usage..
My battery temp range is usually between 30°-40°c. Rarely do I go above that temp range. If you are seeing higher temps, there maybe something wrong with your battery. It would be helpfull to know what the thermal limits are, in reguard to battery temps. My rule of thumb is anything over 40° may be approaching the danger zone. I woikd stop what im doing and let the phone cool off.
I got to 52c w teathering. Now i keep it near my window when i do dat.
G2x
mine reached 108F 43C with just the screen on doing nothing else when it's charging. whole top half (back and front) of the phone gets really warm. is that normal?
Set up wifi tether, plug the phone into the wall charger, start downloading on your pc, and watch those numbers fly!!!
The first day I had my phone I did this and I heard a weird beep noise. When I looked at the phone, it had a warning message on it regarding battery temp.
I don't know the temperature it was at though.
mine is at 109 degrees right now and im just downloading stuff off of the charger.
My battery temp is usually around 35-40°, and I am pretty sure it has not gone above that. I don't try to kill the phone, though. If I am downloading a bunch of stuff, that is when it is usually the hottest.
Can someone charge up their phone to 100% and than go to the diagnostic menu (Go to the phone dialer, type *#*#4635#*#* and check the Battery voltage? It seems mine goes from 4200 at 100% to 4038 at 98% which is a ridiculous jump. even at the end of the 100% charge it will lose 100mV. I checked my coworkers mytouch 4g and at 100 he is getting close to a CONSISTENT 4200 charge that doesn't jump around like my Sensation's
can anyone please do the following and report back? I need to know whether or not my phone/battery is messed up and will need an exchange before my 30 day is up. The reason why this is a problem to me is the percents from like 99-90 seem to go WITHIN seconds. Hell.. It'll even drop 2 percent at a time sometimes in the 60-90 range..
EDIT: as of posting this my phone went from 100% to 95% in about 6 minutes.
My tylt Qi charger heats my battery to 110F (updated). Ive been told that for some reason all Qi wireless chargers heat the battery this much in this particular device.
Please tell us your charger and max battery temp during charge. There are a lot of apps that will tell you max battery temp and here is the one I use
https://play.google.com/store/apps/details?id=com.fsinib.batterymonitorpro
Please charge from at least 50% down and give us the max temp during charge as opposed to the final temp at the end.
111F, 44C nokia dt 9000
110F, 43C tylt vu
106F, 41C koolpad
102F, 39C choe
102F, 39C google LG stock
102F, 39C DT-910
093F, 34C generic (need longer test)
090F, 32C ravpower (need longer test)
Thanks to everyone reporting so far!
NCguy said:
My tylt Qi charger heats my battery to 108F. Ive been told that for some reason all Qi wireless chargers heat the battery this much in this particular device.
Please tell us your charger and max battery temp during charge. There are a lot of apps that will tell you max battery temp and here is the one I use
https://play.google.com/store/apps/details?id=com.fsinib.batterymonitorpro
tylt vu max 108F
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ive heard complaints about overheating nexuses but mine only get up to around 34degree C which is something like 90deg F. that's with a case on the phone as well. i read a little about the Qi standard and the phone is supposed to command charging current so external interference or losses in the reciever coil don't cause the charge current to be lower than the the transmitter is regulating. so maybe some batteries are subject to inductive heating, maybe some phones have a short in the reciever coil. but mine charges to 100% and never gets hot....
I was charging with a Nokia DT 9000. Threw it on at 30 percent. A few hours later I felt it with my hand and it was rather warm so I checked the temp and it was 44C so I pulled it off.
Edit: in a Ringke slim case
Sent from my Nexus 5 using Tapatalk
Dani897 said:
ive heard complaints about overheating nexuses but mine only get up to around 34degree C which is something like 90deg F. that's with a case on the phone as well. i read a little about the Qi standard and the phone is supposed to command charging current so external interference or losses in the reciever coil don't cause the charge current to be lower than the the transmitter is regulating. so maybe some batteries are subject to inductive heating, maybe some phones have a short in the reciever coil. but mine charges to 100% and never gets hot....
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34C is actually a bit over 93F, but much cooler than I have seen reported so far. Which charger and what temp reporting app?
ravPower charger. Went from 80% to 100% in 40 minutes. So half as fast as the stock USB wall charger but still better than I thought it would do. Temp never exceeded 90 degrees.
ok, seems the battery actually cooled while i was installing the app. i installed smart battery monitor. since i posted that, it went up to just under 96 degrees F.still no 108 degrees. but it has been on the charger for over 30 min strait and wasn't off the charger for long before that.
either way i have no problems with heat on my phone, it never feels much warmer than other phones ive had on usb chargers. the charger i'm using is a generic chinese charger. the box has no name brand. i also have a samsung charger but haven't checked the temperature with it. it doens't seem any different.
http://www.amazon.com/Lerway-Wirele...TF8&qid=1385521087&sr=8-2&keywords=qi+charger
Dani897 said:
ok, seems the battery actually cooled while i was installing the app. i installed smart battery monitor. since i posted that, it went up to just under 96 degrees F.still no 108 degrees. but it has been on the charger for over 30 min strait and wasn't off the charger for long before that.
either way i have no problems with heat on my phone, it never feels much warmer than other phones ive had on usb chargers. the charger i'm using is a generic chinese charger. the box has no name brand. i also have a samsung charger but haven't checked the temperature with it. it doens't seem any different.
http://www.amazon.com/Lerway-Wirele...TF8&qid=1385521087&sr=8-2&keywords=qi+charger
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30 mins is not long enough to test it. You need to let it go from about 50% or less to full. The battery temp will vary a lot depending on the full capacity. My software captures the highest temp achieved during the charge because as it reaches full it will already start cooling down. You need to look at a temp graph of the entire charge cycle.
I just received my Nexus wireless charger and installed the free version of the app the OP linked, will charge overnight and see what the app says.
NCguy said:
30 mins is not long enough to test it. You need to let it go from about 50% or less to full. The battery temp will vary a lot depending on the full capacity.
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Sure it's enough. If you plan on charging from 50% or less to full then your battery will get hotter. Wireless or wired. It's just how charging works. More time=more heat. Your still well within the safe zone at 110 though.
http://www.mpoweruk.com/lithium_failures.htm
theesotericone said:
Sure it's enough. If you plan on charging from 50% or less to full then your battery will get hotter. Wireless or wired. It's just how charging works. More time=more heat. Your still well within the safe zone at 110 though.
http://www.mpoweruk.com/lithium_failures.htm
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Then why not charge it for 10 seconds? I'm just trying to get in a full charge cycle to see the max temp. And actually at the end of the cycle your temp should go down due to the way lithium chargers scale down at the end of the cycle. So charging a 95% full battery wouldn't tell us much.
Your linked article says damage starts to occur at 120F. Well, that depends entirely on the particular battery formulation. It's not something you can generalize. Lithium batteries are definitely not all the same. What you can generalize is that more heat means more wear even when below the damage threshold for the specific battery.
37-39°C from ~10% to 100% :good:
NCguy said:
30 mins is not long enough to test it. You need to let it go from about 50% or less to full. The battery temp will vary a lot depending on the full capacity. My software captures the highest temp achieved during the charge because as it reaches full it will already start cooling down. You need to look at a temp graph of the entire charge cycle.
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the phone was charging for an hour before that and it wasn't off the charger for "that" long. i'm not paying for an app i plan to use once and delete. sorry. i found a free app that will log it. i'll post results in the afternoon but the phone has never ever been warm enough for concern or even a second thought.
roli006 said:
37-39°C from ~10% to 100% :good:
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Which charger are you using?
Dani897 said:
the phone was charging for an hour before that and it wasn't off the charger for "that" long. i'm not paying for an app i plan to use once and delete. sorry. i found a free app that will log it. i'll post results in the afternoon but the phone has never ever been warm enough for concern or even a second thought.
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Thanks for your help. There's a free version of the app I linked and I also mentioned that there were many apps available that measure battery temp. I certainly wasn't try to get anyone to purchase that app. I simply made the link available because that was what I personally was using. If someone comes up with one that has better graphics please link it as I didn't have time to evaluate all the apps in this group.
NCguy said:
Which charger are you using?
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I bought this for 30€ (~40$)!
http://www.amazon.de/induktive-Lade...TF8&qid=1385559057&sr=8-4&keywords=B00E5D70ME
It is small and has a rubberized ring and the phone stays in position! I can also lay a small bag between the charger and the phone (http://www.amazon.de/fitBAG-Handyta...qid=1385559718&sr=8-2&keywords=nexus+5+fitbag). The only disadvantage is that you need your own power supply unit for this!
I think the product is identical with this on amazon.comhttp://www.amazon.com/s/ref=nb_sb_noss_2?url=search-alias=aps&field-keywords=qi t-200
Official Google/LG wireless charger, phone was on it all night last night and highest temp reported was 101.5F and today while on subway and or roaming my battery temp hit 102.6F. This is with the bumper case on and phone in my shirt pocket under a jacket. I am inclined to think that if the phone gets that warm when roaming or searching then the charge temp is just fine.
Raistlin1 said:
Official Google/LG wireless charger, phone was on it all night last night and highest temp reported was 101.5F and today while on subway and or roaming my battery temp hit 102.6F. This is with the bumper case on and phone in my shirt pocket under a jacket. I am inclined to think that if the phone gets that warm when roaming or searching then the charge temp is just fine.
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That charging temp doesn't seem too bad to me as compared to the data from the other chargers reported so far. Keep in mind that high battery temp as a result of charging is much worse than rise due to ambient or discharge.
I think the jury is out as to how much affect high charge temp will have on the Nexus 5 battery. No one seems to have any specs and I think experience is going to be the only way to really know. I think we can safely say the temp rises significantly more than with the usb charger.
from what i've read about Qi i dont thnk the problems are with chargers unless they are just ignoring the charge controllers requests to lower current. the 5w charge power is supposed to be regulated by requests from the receiver (phone). so if the phone is heating it may be a phone defect like a short in the coil causing eddies and heating the coil. but i guess there can be factors with the charger...
ok second (this time proper) test with my generic chinese $18 charger.
30-37deg C, graphed out with Battery Info app. 27%-100% screen on the whole time with the phone in a case. thats almost a worst case scenario.
I get around 40 °C (104 °F) with either the TYLT VU or the Koolpad. I usually start at around 50% SOC and it peaks at around 90% SOC. After that the temperature drops a few degrees. I attached a typical profile with the Koolpad.
stbxxl said:
I get around 40 °C (104 °F) with either the TYLT VU or the Koolpad. I usually start at around 50% SOC and it peaks at around 90% SOC. After that the temperature drops a few degrees. I attached a typical profile with the Koolpad.
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Looks like 41C on the chart. Do you have a chart you can post for the tylt?
I think it is the battery, and not the rom, etc. but I have the 7000mah battery and my phone seems to struggle to get to 100% charging sometimes, and I will notice when I finally uncharge it, it can work its way down to 90% within an hour or so, but when it hits like 86%, it won't move for a while despite some heavy load. It's like there are particular % ranges it holds a charge in, and other %'s it struggles. Like charging from 50% to 70% isn't much of an issue, but its moving very slow in the low 80's.
Has anyone else seen this?
Hi all! My Pixel 2 charges fast(~2700mA) up to first ~20%, then the current changes to 1370mA till almost to 90%, then slows a bit till the 100%. I have used Ampere to check the charging speed. I expected the phone to charge to at least 50% at a fast rate, then slow down a bit.
I recently acquired the device and it had May patch, but then after setting the device up, it prompted me for June patch and I installed it. Don't know if the new update could be the problem.
The phone will take battery temperature into account as well. Do you have a way to monitor that and correlate it with where the current switch points are?
Sent from my Pixel 2 using Tapatalk
DurhamHusker said:
The phone will take battery temperature into account as well. Do you have a way to monitor that and correlate it with where the current switch points are?
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I charge my phone early in the morning where it was not used all night. No battery drain apps at all. It just charges from almost 0 to 20 percent really fast, but then slows to a steady 1370 mA.
What I mean is ... Try charging from a different start point.
By the time it's charged at 2.7 amps to go from 0 to 20 it might be getting warm. You might try charging when it's at 20 and cool and see what happens. Or stop at 20 and let it cool down before going any further and see what happens.
Sent from my Pixel 2 using Tapatalk
DurhamHusker said:
What I mean is ... Try charging from a different start point.
By the time it's charged at 2.7 amps to go from 0 to 20 it might be getting warm. You might try charging when it's at 20 and cool and see what happens. Or stop at 20 and let it cool down before going any further and see what happens.
Sent from my Pixel 2 using Tapatalk
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Oh, I see now. Good point. Will try it!
Charkatak said:
Oh, I see now. Good point. Will try it!
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DurhamHusker said:
What I mean is ... Try charging from a different start point.
By the time it's charged at 2.7 amps to go from 0 to 20 it might be getting warm. You might try charging when it's at 20 and cool and see what happens. Or stop at 20 and let it cool down before going any further and see what happens.
Sent from my Pixel 2 using Tapatalk
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So I did some testing and here is what I see:
Phone starts to charge at a good 2700mA rate for ~ a minute, then slows down to 1370mA. It doesn't really matter if phone has 5% of battery before I start charging or 20% or 40%, the charging pattern is the same. At start the battery temperature is ~32 C and when it charges at 2700 for that first minute or so, the temp rises to ~36 C, then phone drops the charging rate to 1370. Phone is pretty much room temperature and not hot or anything like that. I have 2 Google chargers; One is from original Pixel and the other is from Pixel 2 box. Both do the same thing and charge at the same rate.
There are no abnormal app activity or any battery drain. I am using Ampere app to check mA. Did anyone come across this?
It appears you've discovered the magic battery temperature cutoff that HTC has selected for the Pixel 2 ... and that seems to be around 35 or 36 degrees.
For every 10 C rise in temperature, battery degradation doubles by almost every measurable metric. It doesn't surprise me that at around 35 C your phone appears to limit the charge current ... seemingly to avoid making the battery any hotter. Taking the temperature higher for the charge cycle (or for any other reason) will degrade the battery over time. Deep discharges toward zero also reduce the life of a battery. (Keeping it at 50% or higher is recommended for lithium-ion rechargeable batteries.)
If you can cool the phone down to 25 C before starting to charge, I'd be willing to bet that it will charge at the higher rate for longer. Maybe put a small fan on the phone or set it in front of an A/C vent while it charges and see what happens then.
DurhamHusker said:
It appears you've discovered the magic battery temperature cutoff that HTC has selected for the Pixel 2 ... and that seems to be around 35 or 36 degrees.
For every 10 C rise in temperature, battery degradation doubles by almost every measurable metric. It doesn't surprise me that at around 35 C your phone appears to limit the charge current ... seemingly to avoid making the battery any hotter. Taking the temperature higher for the charge cycle (or for any other reason) will degrade the battery over time. Deep discharges toward zero also reduce the life of a battery. (Keeping it at 50% or higher is recommended for lithium-ion rechargeable batteries.)
If you can cool the phone down to 25 C before starting to charge, I'd be willing to bet that it will charge at the higher rate for longer. Maybe put a small fan on the phone or set it in front of an A/C vent while it charges and see what happens then.
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That is interesting as I have had different phones which got even warmer than Pixel 2, but still charged at a good rate. I do know that after 80% of charge of so, the charge rate does go down, which isn't a surprise to me. I just picked up my phone, after it was sitting idle for few hours and see that battery/phone temp is 25 C. I will make sure to start charging phone at a low temperature and see if it will keep the fast charge rate longer.
What you mentioned about the "keeping battery at 50% or so). Did you mean that when battery goes down to 50 or so %, charge it? I usually run battery until about 30 or so % before charging it.
Charkatak said:
That is interesting as I have had different phones which got even warmer than Pixel 2, but still charged at a good rate. I do know that after 80% of charge of so, the charge rate does go down, which isn't a surprise to me. I just picked up my phone, after it was sitting idle for few hours and see that battery/phone temp is 25 C. I will make sure to start charging phone at a low temperature and see if it will keep the fast charge rate longer.
What you mentioned about the "keeping battery at 50% or so). Did you mean that when battery goes down to 50 or so %, charge it? I usually run battery until about 30 or so % before charging it.
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Yes, charging it when it gets to around 50%, based on a number of studies, seems to be the way to go.
Deep discharges and hot temperatures are enemies of battery life for today's lithium-ion cells.
DurhamHusker said:
Yes, charging it when it gets to around 50%, based on a number of studies, seems to be the way to go.
Deep discharges and hot temperatures are enemies of battery life for today's lithium-ion cells.
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I have tried just now to start charging the phone when it is 23 C, but still get the same result. Could it be the June security patch?
Update: So the phone charged by rate of 1370mA from 22% to 100% in 1h 25m. So going from 0 to 100% should take ~1h 45m? Can anyone confirm how long it takes to charge Pixel 2 using original charger?
DurhamHusker said:
Yes, charging it when it gets to around 50%, based on a number of studies, seems to be the way to go.
Deep discharges and hot temperatures are enemies of battery life for today's lithium-ion cells.
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Go a reference to these studies?
This app vendor has seen a lot and isn't convinced discharging to low values has much material effect on battery service life. Charging to high levels does, however. Interesting read I think... with commentry on the often quoted Battery University pages. I agree that heat isn't good whatever.
https://accubattery.zendesk.com/hc/en-us/articles/210224725-Charging-research-and-methodology
https://accubattery.zendesk.com/hc/en-us/articles/212988989-About-the-Battery-University-article
WibblyW said:
Go a reference to these studies?
This app vendor has seen a lot and isn't convinced discharging to low values has much material effect on battery service life. Charging to high levels does, however. Interesting read I think... with commentry on the often quoted Battery University pages. I agree that heat isn't good whatever.
https://accubattery.zendesk.com/hc/en-us/articles/210224725-Charging-research-and-methodology
https://accubattery.zendesk.com/hc/en-us/articles/212988989-About-the-Battery-University-article
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I can't point to anything peer reviewed or funded by the NSF ... so maybe 'studies' is the wrong word.
I've seen the Battery University articles and they've seemed believable to me. It's possible they're flawed. I've also seen articles from these guys - https://www.mpoweruk.com/life.htm ... and other tech writers who corroborate such claims. I've also seen the claims about the high level charging you're pointing to and some who suggest you should keep your battery between 50% and 85% all the time to get the most out of it.