My Phone was very often shutting down by itself and I had to wait before it would reboot like if there was some overheating.
I installed Battery temperature monitor/CPU apps and they are reporting 67°C for the battery (CPU is ok at 37°C).
the battery is cold at touch and measurement were done after a very long shutdown time.
Can anyone confirm if changing the battery will fix the problem ? is the temp sensor integrated into the battery ?
Thanks !
Related
i have noticed that the battery metter is completely unreliable
for example it shows 28% left (btw, i installed FInixNOverBattery for percentage indication) and after a soft reset it shows 41%
or it shows 50% and after soft reset it shows 31%
in this way i can never estimate how long the battery will last
does anybody faced this issue? any solution fot it? (i also tryed to calibrate by completely drain the battery followed by complete charge withe the device turned off)
thank you in advance!
noris08,
it is completey normal to experience big jumps in % after a reboot. The battery % is just a representation of the actual voltage of the LiPoly battery, which usually recovers (rises) quite a bit when there is no load on the battery (even for a short time).
maybe what you say it is true, but i never experienced this behaviour with any of my previous phones. and i had a few, including wm for a few years
and variations of 10-15% - i find them too big
I noticed the same thing. Any explanation for this? Or it is just that FInixNOverBattery is not reliable/compatible/accurate ?
Voltage may vary/jump around due to environmental changes and power consumption or voltage sensor may be insufficiently accurate to provide reliable voltage readings for 1% steps. This is one of the reasons why many battery drivers in WM only provide remaining charge percentage in 10% steps.
In this light, voltage on its own is not a sufficient indicator of remaining charge percentage. Other parameters, such as voltage deviation and other factors, such as power consumption and temperature may need to be taken into account to obtain a more accurate evaluation.
was wondering if anyone notices a significant battery drain with 4.4 on dalvik.rebooting with ART to see if there is a difference.
looks like ART is holding up the battery nicely so far.
I had massive drain with Google Play service keeping the phone awake 98% of the time. This is no longer happening after reboot.
one thing i've noticed with ART besides the hopeful battery improvement, is i cant play games when using ART.that sucks. bsplayer also will not open,just lock up my device.
No problems here. 5 hours screen on time... Loving it. :thumbup:
Sent from my Nexus 4 using xda app-developers app
I flashed factory image of kitkat and I noticed that my phone is getting very hot while charging even when I was not using it.
So I started investigating and I noticed that the processor,which should idle at 384 mhz,is actually staying at 1 GHz(only 2 cores).
I know it can be because of mp decision but then I changed screen off time to 1 mins and still it hovers between 1 Ghz to 1.1 Ghz(only 2 cores) which in turns increases the battery temperature (around 42 degrees centigrade) and may lead to slow charging.I cleared the stats and let system monitor record fresh stats for 30 mins and result was same. I think it could be a bug or some kind of background task which gets triggered only on charging(maybe processes like trimming etc) . I was not able to identify the process as most of the wake lock detector and process monitor apps are not compatible with kitkat.
I used system monitor app to monitor all this. Anybody else facing this issue???
Thank you
NOTE: I restarted after all this and battery level was at 70% and temperature was around 43 degrees after restart everything seemed normal and temperature gradually went to 35 degrees (checked when battery was around 95%).
lovesingh25 said:
I flashed factory image of kitkat and I noticed that my phone is getting very hot while charging even when I was not using it.
So I started investigating and I noticed that the processor,which should idle at 384 mhz,is actually staying at 1 GHz(only 2 cores).
I know it can be because of mp decision but then I changed screen off time to 1 mins and still it hovers between 1 Ghz to 1.1 Ghz(only 2 cores) which in turns increases the battery temperature (around 42 degrees centigrade) and may lead to slow charging.I cleared the stats and let system monitor record fresh stats for 30 mins and result was same. I think it could be a bug or some kind of background task which gets triggered only on charging(maybe processes like trimming etc) . I was not able to identify the process as most of the wake lock detector and process monitor apps are not compatible with kitkat.
I used system monitor app to monitor all this. Anybody else facing this issue???
Thank you
NOTE: I restarted after all this and battery level was at 70% and temperature was around 43 degrees after restart everything seemed normal and temperature gradually went to 35 degrees (checked when battery was around 95%).
Click to expand...
Click to collapse
I experienced a hot phone with my first 4.4 flash but don't have that after reflashing. I get really quick charges. And a nice batt. Life. Still with the same problem though.... I can't play zombie tsunami in ART mode. I'll try uninstalling then reinstalling to see if it works
Historical phone performance:
Battery usage (slide 1) – phone uses up 21% in 9 hrs incl 1hr screen-on time and 23 minutes talk-time.
Charging (slide 2) - phone reaches peak battery temperature 105F as voltage increases past 70%, then battery temperature lowers. Max charging current 1500 – 2000 millamps, decreases back to zero causing the temperature to falls. Max voltage 3,450 millivolts.
Phone is rooted and generally operates great with very few problems.
The overheating event (slide 3)
9:50pm – placed phone on charger, using phone screen
10:30pm – stopped using phone, left phone on charger (normal routine)
11:20pm – batter reaches peak temperature of 110F as voltage increases past 70% and then battery temperature starts decreasing. Everythign seems normal at this point.
1:45am – battery temperature starts increasing again and increases to peak of 145F battery temp at 2AM. Bounces around in the 140-145F range.for the next three hours
NOTE – Even though at first glance it seems like a battery/charging problem, the current and voltage behave very similar to the previous normal charge. This seems to rule out battery/charging problem (?)
4:40AM – alarm goes off and I awake and find hot phone and unplug it from charger immediately. Took screenshot (slide 7) showing battery temp 135F and cpu temp 174F. (by the way in other screenshots, cpu temp is on the far right of my notification bar, battery level is on far left of notification bar, and battery temp is 2nd from left on notification bar... the battery temp showing on the notification bar in this particular screenshot is not updated yet because I just turned the phone screen on).
From this point on battery temperature drops significantly (in response to unplugging presumably). Note that GSAM battery monitor battery stats are wiped by unplugging charger, can’t retrieve what they were before.
04:52 – took GSAM battery stats approx. 12 minutes after unplugged. (slide 4) - Battery is down to 95% already and 56% used by apps (even though I have had screen on continuously). The two apps sucking up all the juice are Lookout and Mapquest. Lookout has been on for 13 minutes which is the entire time since the stats were reset when the phone was unplugged. Mapquest only shows as being on 10 minutes at this point. I checked GPS at this point and it was definitely enabled (I normally leave it enabled without any problem). I am not positive whether I disabled GPS at this point or not. I didn’t stop the apps… curious to see how they would behave. Turned off phone screen and left it alone approx. 05:05 until..
05:40 – took GSAM battery stats approx. 1 hour after unplugged. (slide 5) Battery is down to 79% (huge drain… I normally get 9hours plus before I get to 79%). Biggest users are again Lookout and Mapquest. Battery temp is 95F (in an ambient temperature around 70F) which is high considering the phone was not being used and not being charged.
05:45 - Uninstall lookout. I may have turned GPS off at this time (if I hadn't already done it at 04:52... not sure). Reboot. After reboot I did note GPS was disabled and Mapquest was not running. Phone has operated normally since (normal battery drain, normal temperatures).
Hypothesis – Rogue apps Lookout and Mapquest? But they didn't overheat much after battery was removed from charger (even though they continued to use abnormal battery). Maybe it only overheats with the combination of both the rogue apps plus the charging?
Also, would seem too coincidentl to have two different rogue apps show up at the exact same time. Maybe at least one of the rogue apps went rogue as a result of the high temperature.?
What do you think?
Update: charged overnight the following night and everything was normal, just like slide 2.
Hey guys ,
I have a Note 4 N910F. I can't say I'm impressed with its battery life (coming from LG G3) but it lasts from the morning till I go to sleep on med-high use which is fine.
The problem that I experience though, is that if I "heavily" use my device when the battery reaches 10% - i.e. the GPS and the Data Connection turned on and Google maps are being used, the phone suddenly shuts down. I need to put it on a charger to turn it on and the battery is 0%.
I will post a screenshot as soon as I can.
Do you think this might be related to a hardware issue ? Or is it just the battery ?
I've tried to calibrate the battery but didn't help.
thank you!
Snake_A said:
Hey guys ,
I have a Note 4 N910F. I can't say I'm impressed with its battery life (coming from LG G3) but it lasts from the morning till I go to sleep on med-high use which is fine.
The problem that I experience though, is that if I "heavily" use my device when the battery reaches 10% - i.e. the GPS and the Data Connection turned on and Google maps are being used, the phone suddenly shuts down. I need to put it on a charger to turn it on and the battery is 0%.
I will post a screenshot as soon as I can.
Do you think this might be related to a hardware issue ? Or is it just the battery ?
I've tried to calibrate the battery but didn't help.
thank you!
Click to expand...
Click to collapse
Next time you should search first as there is another thread discussing about this.
But I will still answer your question.
It's your battery deteriorating.
It seems that your battery can only hold 90% of the original capacity.
Li-Ion/poly battery WILL deteriorate over time & it can deteriorate faster without proper care.
How to prevent faster battery deterioration:
Avoid heat.
High temperature is the worst enemy of any lithium based battery.
Never let your battery reach 0%
Reaching 0% means longer charging time = more heat exposure while charging
Avoid putting your device/battery on the dashboard during sunny day.
Do short charge multiple times a day.
There is a sudden quick battery percentage drop and then it normalizes in the 20% Mark again. Need solution.
Same happened to me the problem was battery just getting old after I bought a new one it was never a problem again if it's not that then it might be a problem with a rom or battery calibration
You can do battery calibration. (require root)
You can do battery calibration. (require root)
Same happens to me, it remains 20% then suddenly drains abruptly !