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Solution to the battery drain issue

Hi all, based on my experience of flashing various different ROMs, most of the ROM shouldn't have the battery drain issue. However, I discovered some times after flashing a new ROM the device gets much warmer and the battery drains very quickly.
When this happens the best solution is to shutdown the device, pull the battery out for 5 minutes or so to let it cool down. Then put it back and turn on the device and the battery drain problem should be resolved.
I haven't been able to find the reason behind that but it does make a big difference. With one of the ROM I flashed, the battery went from 100% to flat in less than a day even when no WiFi, no bluetooth and no infrared are turned on. Then I recharged the device, pulled the battery out to let it cool down and put it back. After that the battery went back to normal with only around 3% consumption overnight.

Sounds interesting.
I also noticed that the device is getting hot in some cases (high CPU usage).
It is clear that the selfdischarge of the battery if much higher when it gets warmer. If it is being recharged in a short time afterwards, then also here the temperature will get higher.
This might be an explanation. You're right.
Flip

Mhh.. i found out, if you have a bad cell connection (like 1 bar of all 4) the phone starts to boost somehow this hardware and drains alot battery.
Any1 experiencing that?

HansiHusten said:
Mhh.. i found out, if you have a bad cell connection (like 1 bar of all 4) the phone starts to boost somehow this hardware and drains alot battery.
Any1 experiencing that?
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Click to collapse
You're absolutely correct... When the GSM carrier signal is weak, your phone compensates for this weakness by boosting the signal off your phone's antenna. This process consumes alot of power. Another reason for such a high consumption is that your GSM service provider is using a low GSM band for its GSM infrastructure and your phone is a triple/quad band phone. In that case, it would continuously boost off the signal.

Transmitter status - Battery life is short and phone is warm.

Greetings:
I am using an HTC Touch Pro (Sprint). I have not loaded anything new on it and have not changed my habits with the phone. Over the last few days, the battery life is very short and the back of the phone is warm. In the past, when I have used the GPS or Wifi for long periods, I have experienced the same issue. Neither of those are in use, the WiFi is off, the BT is off, nothing is running in the taskmanager except for ActiveSynch which is the normal. I have reset the phone and started with a full charge today, and the phone is almost dead. During the usual course of the day, it may consume 1 bar of battery by the end of my day. It is now on the last bar and within an hour it will be dead unless I take action.
Is there any way to determine the state of the transmitters or receivers? I am guessing by the warmth on the battery cover that one of them is on however, none should be (except the normal ActiveSynch data connection) -or- can someone point me in a direction as to what may be causing this?
tia - Brandon - goodluck(at)zoominternet.net

[Q] Losing 30-40% battery overnight

I had this problem once when I first got my captivate, but then it went to normal (lose ~5% overnight). Overnight I keep wifi connected and airplane mode off. I was happy, lasted 10-15 hours daytime depending on how heavy I used it, etc.
I recently ordered a two spare batteries with an extra micro usb cord as well as an external battery charger (charges batteries while not inside the captivate). I use the new microusb cord to charge sometimes too because for some reason it doesn't work with PC to connect micro sd card, and I charge my batteries mostly using the external charger.
I recently started losing 30+% overnight. I don't know when exactly (if it were apps or the new batteries, but it happens with my old battery and the new ones). I installed spareparts and battery history and tried turning off background data but I still lose this much overnight. I don't really know how to read spareparts to try to isolate an app. My daytime battery life is not drastically lower than before (10+ hours), but I think it is a bit lower than before. Does anyone know how to fix this problem?
tl;dr:
- used to lose <5% battery overnight
- got new batteries, now use external charger
- suddenly started losing 30%+ overnight, don't know why
- help please!
thanks!

I personally lose more than that overnight when I have wifi enabled. However when I have it off I lose less than 5%. So I guess I'm in the opposite situation as you.
Since you already have spare parts installed and used to have better life the only thing I can suggest is recalibrating http://forum.xda-developers.com/showthread.php?t=765656. Sorry if you have already done this before. It's just that when you pull the battery and switch it I'm assuming the battery stats file may not adjust accordingly. It's worth a shot.

I seem to be having the same issues as you. I made a thread over at the Q&A section which may be of some help.
http://forum.xda-developers.com/showthread.php?t=829285
As for losing more than 30%-40% overnight with wifi enabled, there has got to be some lingering issue on your phone if it is losing that much. I don't think any phone, no matter how bad the battery life it has, should lose that much overnight, granted that you don't have a TON of data intensive activities running on your phone.

30-40% WOW!
I get 36-48 hours in between charges on my phone.
Wifi is always on, sync is always on, no live wallpaper, weather and email updates every hour. I'm not on it every minute of every day but enough use for sure.
over night I lose about 5% on average.

Calibrate your battery...but you can't change batteries or you need to calibrate all over again.
Sent from my FroYoed Sprint Hero

As I posted in this thread: http://forum.xda-developers.com/showthread.php?t=829285, I did a factory reset and my phone seemed to be working fine as it slept when the screen was off (checked by using *#*#4696#*#*). It was good until approximately 50% when all of a sudden I checked and it wasn't sleeping once again. Checking the partial wakelock "Android System" was taking up an increasing larger amount of this section. I didn't do anything on my phone as I was sleeping and periodically, when I'd wake up, I'd check on my phone status. When I reboot the phone once this happens, it sleeps once again.
Keep in mind, my phone is stock. Didn't install any apps or anything at all since the factory reset. Now I'm not sure if I have a defective phone. Maybe the Android OS is set up to run like this? There's no such thing as a defective OS is there? Can't be anything on my end because I didn't touch the phone nor did I install any bad apps (or any apps at all for that matter). Can it be a battery issue? I can't see how a bad battery can cause the phone not to sleep. Is there something in the Android OS that turns on automatically after a while that may be causing it?
I'll try to recalibrate my battery but I don't know how that would alter if my phone sleeps or not, but I'm willing to try. I'd rather not take this phone back and get another one as that's a hassle.

Mine will loose 40% over an 8 hour window easy with absolutly 0 use if its near the "edge" of either wifi coverage or data coverage.
IE, sit the phone down with a weak att signal and walk away. It'll die on its own unless you airplane mode it within half a day.
I have to religiously turn the phone on airplane and switch to wireless at home, and turn to airplane and turn wireless off at work (can't connect to work VPN with 2.1 !)
If I leave it on full in either location, it's bloody dead next time I touch it.
However, with good home wifi, I can actually get 4 days of email checking, use as alarm clocks, some other sms stuff without plugging in.
This things is helaciously sensitive to wonky radio connections.

hmmm. I guess I'll try it with wifi on tonight. I don't think recalibrating would cause it to have a 10x difference in idle battery usage, but I'll try that if all else fails

I use Setting Profiles app and have it set wireless to Airplane mode from midnight to 6am. Still, I'm finding my battery down by 30-50% at night.
Looking at Battery Usage, my Display, Cell Standby and Phone Idle we all using the majority of the battery power. I'm not sure if these numbers are reset after the phone comes off the charger or how it is calculated.

I just turned off wifi altogether and have seen huge improvements. I don't even use it anymore despite being in my house with a wireless connection. Data usage isn't that much slower so not much of a loss. At least it can sleep.

i only get like 24 hours on my phone :/

fshalor said:
Mine will loose 40% over an 8 hour window easy with absolutly 0 use if its near the "edge" of either wifi coverage or data coverage.
IE, sit the phone down with a weak att signal and walk away. It'll die on its own unless you airplane mode it within half a day.
I have to religiously turn the phone on airplane and switch to wireless at home, and turn to airplane and turn wireless off at work (can't connect to work VPN with 2.1 !)
If I leave it on full in either location, it's bloody dead next time I touch it.
However, with good home wifi, I can actually get 4 days of email checking, use as alarm clocks, some other sms stuff without plugging in.
This things is helaciously sensitive to wonky radio connections.
Click to expand...
Click to collapse
It's not just this phone. My wife's iPhone does the same thing, as did my Q9H. The constant switching from 3G to Edge will kill a battery.

SiL3nTKiLL said:
i only get like 24 hours on my phone :/
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Click to collapse
24 hours is normal.
Sent from my FroYoed Sprint Hero

I turned off wifi and have seen an improvement. It's still not where it was before, though - I used to lose 5-10% with wifi on. I wish I knew what happened.

[Q] battery discharge even when turned off

My phone is discharging even when is turned off!
Besides it have high battery drain compared to my BravoC, which in stand by last for days.
This Inspire 4G last max 15 hours, changed the radio, and flashed it to reach that, before it lasted ~9 hours max. I'm talking in stand by, not even using it nor data/wifi/gps turned on. I have checked the processor use and it was in deepsleep most of the time.
Yesterday I fully charged it and inmediately turned it off. Today I tried to turn it on but is dead, completely drained. The battery is new and it does have the sufficient capacity, i mean is not a battery failure (checked it with a hobby charger).
I bought the phone on ebay, it has the volume up button dead, so I dissasembly it to if it can be fixed easily and found out that the phone was previously open. Also the screen seems to be a replacemente (a crappy one) since the light bleed in the dark state is high, alsio the light bleed at high angles. This would explain the high drain using it, but not the drain when is turned off.
Anyone have any idea of what it may be? maybe something not connected properly when it was repaired before or a short circuit anywhere?? or is a deeper failure and there's nothing that can be done?
I'm saving for a One X in the meanwhile but i'd like to fox this in the meanwhile since i won't be buying it anytime soon

Xperia Z5 shutdown with battery well over 50%

Hi all, I am experiencing some problems with the battery of my phone after doing a factory reset due to general slowdown. Here are the specs of the device:
E6653 - Android 7.1.1 - Build no. 32.4.A.1.54 (branded by Wind which is an Italian telephone company)
The problem is, after the reset the phone started to shutdown due to "low" battery at 70%. My first thought was "OK, the battery is gone" because I have the phone since 2015. But after the restart, the level is still 70% instead of 0%.
Moreover, when it shuts down, I can't reboot unless the phone is on charge. When it restarts, as I said before, the charge is the same level as before the reboot, and if I leave the phone untouched it lasts for the whole day as before. But if I use it for more than some minute, it reboots again signaling low battery, but the charge is the same as before. The phone can't reboot by itself, it needs to be plugged. After it has restarted, I can remove the cable and the phone keeps working as usual.
Here is what I tried to do until now:
- Calibrate the phone (phone is not rooted): the phone keeps working until the battery goes to 60%, then shuts down and is unable to reboot if not plugged to the charger. the same happens if I try to reboot it manually.
- Remove power saving options (stamina, data saving etc.) the phone keeps working until 40% of power, then shuts down as before, but if I try to reboot it manually it is able to reboot normally.
Here is what I am thinking to do:
- Root the phone to perform a root calibration: in this case I would like to know if there is a way to root the stock ROM only, without custom kernels, custom ROM etc. because the stock ROM has always worked flawlessly and I don't want to change it;
- Think about a battery replacement. One thing I noticed is that before the reboot, the battery seems to heat a bit, but not more than usual. I don't know if it can be linked to the problem I described.
Do you have any suggestions? Thanks in advance

I think it's purely a matter of battery because I never experienced it in the xperia Z3,about the problems of the root and of the calibration battery that no results really mean,I'd say replace the battery and if the problem still occurs there is the possibility of more severe that the IC power or IC charger or something I don't quite understand because I'm not a technician

I have same issue. Even battery level show more than 80%, but suddenly the Z5 shutdown. It is really annoying. I did factory reset but not help. Check battery status show healthy as well. I am not sure battery issue or some hardware issue such a corrupt NAND.
Also phone got hot even just take a picture.
Totally I am tired with this phone. I used use many kinds of Android since 1.6. But this Z5 stock is unstabler than own customized kernel phone.
I regret bought this phone.

I found this old thread still open so the conclusion is: I had the phone tested by ad authorized assistance centre and the battery was gone, so I had it replaced and re-calibrated the phone as soon as the new battery was in. It has been working for two years and the capacity is still at about 95% so the thread can be marked as solved