Database Info

TF and dock battery log

Just posted this in another forum, thought it might interest some people here...
Hi all,
With all this talk about the dock loosing its charge and noticing it myself, I started a log on TF usage and battery. Started at 6am yesterday with a full charge in both. The TF stayed docked and turned on the whole time. From 6am to 5pm, the TF was on plane mode (I don't have wifi at work anyways) and the rest of the time wifi was activated. No special program was activated or deactivated. regular programs ran in background (email, splashtop, mynet, maps...) Here is the summary of the log:
6am to 5pm - about 1 hour and a half of use (moving icons and widgets, using catch notes, polaris and took 2 pictures), rest of the time the TF was in sleep mode. All the time in plane mode.
5pm to 10:30pm - Wifi activated, used continuously for 3 hours trying out Springpad, emails, tapatalk, watching a flash movie for 45 min.
10:30pm to 6:30am - Sleep mode with wi-fi activated.
6:30am - light is flashing and TF at 96%.
So, in 24 hours, the TF was:
Sleep + no-wifi = 9.5 hours
Sleep + wifi = 10.5 hours
Use + no-wifi = 1.5 hours
Use + wifi = 3 hours
The dock battery lasted for 24 hours with the TF never being shut down. This is with 4 or 5 hours of use. If we extrapolate, the dock+TF battery could last 48 hours with the TF turned on all the time and 8 to 10 hours of email/navigation use.
This is about 4% discharge per hour. Which I think is a lot since most of it was in sleep mode. Not very impressed with these results. Thoughts?
My feeling is that the dock IS discharging more than it should be. I undocked the TF with 92% of battery charge and will keep logging.
Tell me if you want me to keep posting these kinds of logs.
Joël.

how much battery left

When I put it to sleep it had 99 percent battery. When I woke it up 7 hours later it had 75 battery left. Is this normal. Again I didn't turn it off I just put to sleep, and no the wifi was off

Not normal, most likely a wake lock.
Usually I get about 1% per hour on standby and thats with notifications of certain applications still popping in and wifi on.
There's no one answer when it comes to battery life. Everyone needs to find their own way because everyone has their own set of applications that run in the background based on what they install and how they use the tablet.
Best advice is to monitor battery use in the battery page in settings and see what applications are near the top of the list.
I've noticed that if I leave an open S-Note session running on the tablet and let the screen go to sleep for example then I'm hit with a wakelock that keeps battery drain higher.
This kind of stuff is why many of us want root access so that we can have better monitoring ability and control over processes running on our devices.

Rooted and lots of bloatware turned off.
2 hours 36 min and still 100%

Not rooted yet and went from 84% to 81% overnight (wifi on, nova launcher, as much stuff as possible turned off without root). Can't wait to root Chainfire's root didn't work for me. Hoping he comes out with an updated version soon.

markklok said:
Rooted and lots of bloatware turned off.
2 hours 36 min and still 100%
Click to expand...
Click to collapse
May I ask what you turn off after rooting. I am trying to fix my battery life. Thanks
I mean did you shut off stock apps or 3rd party

[Q] Current drain in sleep measured with CurrentWidget

Hello guys, I had some battery trouble with my Nexus 5, and during my investigations I saw something strange.
I used CurrentWidget app to track my
current drain, during wake and during sleep. Settings: Update Interval = 10 sec, Log Values to file = true, Force Log in sleep mode = true.
When I viewed the log as graph I saw that during sleep the current drain never decreases to something close to 0 mA, it stays around 100 mA,
or goes down to 30-40 mA, but absolutely never less than this, as you can see in the attached screenshots.
I tested and confirmed this behavior with 4.4.4 and 5.0.1, both flashed clean with factory images, without any other apps installed besides Google apps. During the tests I kept the phone with normal usage: WiFi on, 2G network, Bluetooth on, Location Battery saving, Auto-sync on, and just some net browsing. But of course the most important information was collected during sleep with screen off. Surprisingly, by putting the phone in Airplane mode the current drain in sleep remained exactly the same, between 30-100 mA.
I also tested this on a Nexus 4 with 5.0.1 and during sleep it consumes around 2-4 mA, so there is a big difference.
Can any of you also install the CurrentWidget app, configure the logging, wait a few hours than make a screenshot of your current drain graph ?
I want to see if it's something abnormal with my phone of if it's a general thing. It would be very grateful. Thank you.

Is the widget keeping the phone out of deep sleep? A la wakelock... Just a theory.

what are your wakelocks ?
try gsam battery monitor,
i thought currentwidget drains the battery,i only used that program to check charging current and display idle, but never kept it when display was off.
or try betterbatterystats
http://forum.xda-developers.com/showthread.php?t=1179809

republicano said:
what are your wakelocks ?
try gsam battery monitor,
i thought currentwidget drains the battery,i only used that program to check charging current and display idle, but never kept it when display was off.
or try betterbatterystats
http://forum.xda-developers.com/showthread.php?t=1179809
Click to expand...
Click to collapse
I'm not interested in wakelocks, just current drain.
And no, I don't think it's keeping the phone from entering deep sleep, it just wakes up from time to time to log the current.
Anyway, the same app with the same settings on my Nexus 4 records 2 mA in sleep mode, so it's definitely in deep sleep.
So , please can you do this experiment on your phone and share the results ? Thank you so much.

I very rarely got below 27mA. Though I've no idea of it was in deep sleep at that time.

rootSU said:
I very rarely got below 27mA. Though I've no idea of it was in deep sleep at that time.
Click to expand...
Click to collapse
An even better app that can log the current drain of the phone is Battery Monitor Widget. I configured the recording interval to 10 seconds for testing and played with the Graphics window.
The first picture is from a friend's Nexus 5 (stock 5.0.1) and the second one is mine (stock 4.4.4, but same tested on 5.0.1),
As you can see the current drain even in sleep never decreases below 30 mA and the mean is around 100 mA.
This is very bad, because even the Nexus 4 with 5.0.1 has a 3 mA drain in sleep,
so why is the Nexus 5 drain from 10 to 30 times more ?
Can someone shed any light on this ?

At 100mA drain, your phone would hypothetically last 23 hours. 100mA * 23 hours = 2300mAh. I doubt that. It surely must last longer than that, if it is indeed in deep sleep and not kept awake by some application.
My hypothesis is that what you're seeing is a calibration error. The current measurement is more than likely inferred by accounting for other factors. (I doubt the current is measured directly - ie. as an ammeter). Therefore, I would suggest taking it with a grain of salt.
That being said, with all things being equal, if someone were to do the test, they would probably get similar results to you.

JayR_L said:
At 100mA drain, your phone would hypothetically last 23 hours. 100mA * 23 hours = 2300mAh. I doubt that. It surely must last longer than that, if it is indeed in deep sleep and not kept awake by some application.
My hypothesis is that what you're seeing is a calibration error. The current measurement is more than likely inferred by accounting for other factors. (I doubt the current is measured directly - ie. as an ammeter). Therefore, I would suggest taking it with a grain of salt.
That being said, with all things being equal, if someone were to do the test, they would probably get similar results to you.
Click to expand...
Click to collapse
Can you please do the test on yours?

My results are comparable to yours, andreipaval. The current sensor was more than likely designed for limiting charging current and not for measuring sleep current. Plus, more importantly, the phone definitely has to be pulled out of deep sleep to even make a measurement. The sensor being off by less than a hundred milliamps makes little difference when one can charge at much higher rates but it will falsely report the idle drain.
Perhaps it was your Nexus 4 that was off by -100mA and falsely reported 3-4mA. It can safely assumed that the internal leakage of the battery itself is probably more significant than 3-5mA... Thus, as I previously suggested - you might want to consider taking this with a grain of salt. If you want to do a more conclusive test, see how long your phone lasts from 100% to 0% in deep sleep and airplane mode. You can get a pretty good estimate of the drainage that way. (Batt capacity divided by number of hours)

JayR_L said:
My results are comparable to yours, andreipaval. The current sensor was more than likely designed for limiting charging current and not for measuring sleep current. Plus, more importantly, the phone definitely has to be pulled out of deep sleep to even make a measurement. The sensor being off by less than a hundred milliamps makes little difference when one can charge at much higher rates but it will falsely report the idle drain.
Perhaps it was your Nexus 4 that was off by -100mA and falsely reported 3-4mA. It can safely assumed that the internal leakage of the battery itself is probably more significant than 3-5mA... Thus, as I previously suggested - you might want to consider taking this with a grain of salt. If you want to do a more conclusive test, see how long your phone lasts from 100% to 0% in deep sleep and airplane mode. You can get a pretty good estimate of the drainage that way. (Batt capacity divided by number of hours)
Click to expand...
Click to collapse
I have looked into this myself recently using software readings from Current Widget and agree with your findings. Basically once the phone enters true deep sleep the measurement intervals increase until it's the only process waking the phone and measuring higher rates than would be found without the software waking the device.
andreipaval said:
Can any of you also install the CurrentWidget app, configure the logging, wait a few hours than make a screenshot of your current drain graph ?
I want to see if it's something abnormal with my phone of if it's a general thing. It would be very grateful. Thank you.
Click to expand...
Click to collapse
I have made a log of power level readings with Current Widget in various forms of usage. The update interval was set to 5 seconds but you can see at the beginning when the phone was mostly idle the update interval becomes delayed and sees above average idle measurements. Compare this to after when I began to listen to music on the phone with the screen mostly off. Here we can see lower numbers while the phone is actively playing music, less so than before when the phone was said to be in deep sleep. There are periods of idle followed by various periods of screen usage following that, more details can be found in the album included below.
There's also the case of background software drains. Things like Google Now and Auto Syncs kicking in, and whatever other apps and services may be installed. These results were with Google Now off, Locations off, Hotword off, Auto syncs on, and Adaptive Brightness on set to 40%.
I took screen shots of my usage having ended the voltage measurements at the 45% mark of this charge.
http://imgur.com/a/5VsRI 45% remaining
http://imgur.com/a/vQpoz 5% remaining

bblzd said:
I have looked into this myself recently using software readings from Current Widget and agree with your findings. Basically once the phone enters true deep sleep the measurement intervals increase until it's the only process waking the phone and measuring higher rates than would be found without the software waking the device.
I have made a log of power level readings with Current Widget in various forms of usage. The update interval was set to 5 seconds but you can see at the beginning when the phone was mostly idle the update interval becomes delayed and sees above average idle measurements. Compare this to after when I began to listen to music on the phone with the screen mostly off. Here we can see lower numbers while the phone is actively playing music, less so than before when the phone was said to be in deep sleep. There are periods of idle followed by various periods of screen usage following that, more details can be found in the album included below.
There's also the case of background software drains. Things like Google Now and Auto Syncs kicking in, and whatever other apps and services may be installed. These results were with Google Now off, Locations off, Hotword off, Auto syncs on, and Adaptive Brightness on set to 40%.
I took screen shots of my usage having ended the voltage measurements at the 45% mark of this charge.
http://imgur.com/a/5VsRI 45% remaining
http://imgur.com/a/vQpoz 5% remaining
Click to expand...
Click to collapse
You got almost 6 hours of SOT from a single charge? How did you do that?
It seems impossible to me...

Well, I get anywhere between 5 to 6 hours of SOT if I use the phone heavily (continually). If I'm working and just using the phone regularly, I get between 3-4 hours of SOT. I assume it's the moving around, changing cell towers, turning WiFi on and off and things like that. Also, web browsers are notorious for ramping up CPU frequencies, and hence power drain. I can get 5-6 hours using Tapatalk but not playing games and browsing the web.
---------- Post added at 06:20 PM ---------- Previous post was at 06:17 PM ----------
bblzd said:
I have looked into this myself recently using software readings from Current Widget and agree with your findings. Basically once the phone enters true deep sleep the measurement intervals increase until it's the only process waking the phone and measuring higher rates than would be found without the software waking the device.
I have made a log of power level readings with Current Widget in various forms of usage. The update interval was set to 5 seconds but you can see at the beginning when the phone was mostly idle the update interval becomes delayed and sees above average idle measurements. Compare this to after when I began to listen to music on the phone with the screen mostly off. Here we can see lower numbers while the phone is actively playing music, less so than before when the phone was said to be in deep sleep. There are periods of idle followed by various periods of screen usage following that, more details can be found in the album included below.
There's also the case of background software drains. Things like Google Now and Auto Syncs kicking in, and whatever other apps and services may be installed. These results were with Google Now off, Locations off, Hotword off, Auto syncs on, and Adaptive Brightness on set to 40%.
I took screen shots of my usage having ended the voltage measurements at the 45% mark of this charge.
http://imgur.com/a/5VsRI 45% remaining
http://imgur.com/a/vQpoz 5% remaining
Click to expand...
Click to collapse
Thank you @bblzd for following up with the research and confirming my hypothesis.

andreipaval said:
You got almost 6 hours of SOT from a single charge? How did you do that?
It seems impossible to me...
Click to expand...
Click to collapse
Battery life is determined mostly by usage, settings and signal. So the apps I used, with the settings mentioned, on a strong WiFi signal.
There are ways I could increase battery life further such as lower brightness, disable auto syncs (or have them set on an automated schedule like I was forced to do on Kit Kat) or even disable Dashclock despite its minimal attributed drain. There are also always random factors such as incoming calls, texts, app updates, etc.
Generally the Nexus 5 is great on battery using WiFi, but only average when using data connection or making voice calls. This can be seen in Anandtech's review back from Dec. 2013.
http://anandtech.com/show/7517/google-nexus-5-review/3

[Tutorial] How to get 14hours of Screen On Time!

I'm in HAVOC 2.0 OFFICIAL (Pie), but it will work with ANY custom rom. If you don't have the 1st option Smart Pixels in "Havoc Settings" ('cause you're using another Custom Rom) you can use the app: "Pixoff: Battery Saver" or similar...
Tutorial>>>>>
1 - Havoc Settings > Screen > Turn on Smart Pixels (62% of pixels disabled), and increase the brightness just a little to compensate.
2 - Use Greenify along with Greenify4Magisk module to freeze all GCM apps.. But you can just disable GCM and other stuff in "MyAndroidTools Pro" by yourself decreasing the need of freezing unnecessary apps... but you have to understand how android works or you will break your system (USE WITH CAUTION). (A 1 million dollar tip here: Disable things like "analytics", "gms", "GCM" (if you're not finding those words tick this icon "<-->" to expand the service names..
P.S.: Only play with Third Party apps... Don't mess with system apps!
3 - Use Naptime to make Doze mode work properly...
4 - Use AfWall+ to block all apps that don't use internet to leak data and hog your battery unnecessarily.
Extra Magisk modules I'm using:
- AdGuardDNS Adblocker (unofficial)
- Sysconfig Patcher (sp) helps to doze Google Play Services and system apps that hogs battery...
- Swap Torpedo -> to SPEED memory.. my old devices 1gb ram runs blazing fast with this and it works so f**cking good in Note 5 aswell..
* You can turn all animations off systemwide and your experience will be better IMHO
You can tell me if it worked or not.. But I'm getting 14hours of SCREEN ON TIME. :victory::laugh:
In the screenshot below I was in 7h39mins of Screen On Time with 50%... I'm just sharing all these stuff 'cause I finally manage to have a GREAT battery life. I used to mess with Amplify app once and didn't have so good experiences (Phone app missing calls and whatsapp doesn't showing notifications), but maybe someone else manage to get a better SOT than mine, using it properly..
https://imgur.com/oT0FXAy

Nice share
But usually the SOT is not the similar that you would get from 100 to 50 % battery and from 50 to 0 % battery. So it's not fair to say the SOT would double by sharing a screenshot of 100 to 50 % of usage.

Kirankj1724 said:
Nice share
But usually the SOT is not the similar that you would get from 100 to 50 % battery and from 50 to 0 % battery. So it's not fair to say the SOT would double by sharing a screenshot of 100 to 50 % of usage.
Click to expand...
Click to collapse
If my usage will keep the same (4G always on: Whatsapp + Opera (facebook site mainly) + Instagram + editing photos on Snapseed + gallery), my estimated SOT is 12-14 hours.. I will post a new 100% test screenshot to prove you.
I mean, if the mAh consumption will keep the same over the same kind of usage, it's easy to trace a statistic number over it. Ok ok.. You want proof, just test it and tell me.. I had to plug the phone in PC to install some last apks.. But tonight was my final installs and tomorrow I will test it from 100% to almost 0%

Getting 11 hours of SOT on Revolution OS & Insigniux kernel and no tweaks at all. My usage consists of a lot of YouTube, reading books on the Kindle app, playing some games, and the usual social media (whatsapp, twitter, instagram). I also listen to a lot of music via bluetooth headset (about 5 hours per day). The phone lasts almost 2 days with such a usage. So yeah, I think this is more than enough for the average user such as myself, no need for all the hassle you posted above. It's really unnecessary.At this point, this is just turning to a "who has the best SOT" battle. Even 7/8 hours of SOT is something great for this device, while 800/1000$ flagships are struggling to push over 5 hours of SOT.

Thanks a lot for the time spent writing this. Would you have more information about the firmware and kernel you're using ?

First, to everyone that read OP, realize there are some inaccuracies. Sorry man.
Smart pixel settings and apps like PixOff only save battery for OLED displays. HAVOK OS is available for multiple devices and this feature is beneficial for devices with OLED displays, but does not make a difference to LCDs.
Our phone has an LCD display which cannot actually "turn off" a pixel . It consumes the same amount of battery no matter what color it displays. Display brightness makes the biggest difference in display battery consumption.
So by turning on "smart pixel" and increasing the brightness you are actually HURTING your battery life overall.
Secondly, you only tested from 100-50%. You will ALWAYS get vastly more battery life from the top 50% than the bottom, because batteries voltage does not drop linearly, it is chemical reaction that is actually quite hard to measure accurately.
There have been many times where I was "getting 14-15 hours SOT" in the top half, but then watch as your battery drops from 40-20 from only 1 hour of light use. I can almost promise you this guy won't actually get more than 11 hours by the time he hits 0.
Use it from 100-0 at least 10 times , showing 13-14 hours of SOT and I will actually believe you are on to something.

On MiUI 9.5.17.0 I already can achieve close to 14 hours SOT, but that is within 1 day 10 hours usage. Usually I get 11-13 hours only within 1+ day usage. On AOSP, specificly RR 6.2.0, I easily reach 4-5 hours SOT by 70% (which I usually charge it already), 15 hours if interpolated to 2 days usage. 10 hours SOT is almost guaranteed. Last test is 13 hours SOT within 2 days 2 hours. If you want to see what is the configuration and usage, just check the link. I prefer to state my configuration and usage during the test, to show any possible different variable.
1. SmartPixel AFAIK is useless in IPS LCD. I would prefer the full maximum resolution as not to downgrade my user experience
2. I don't use any greenify, simply use the battery optimization from android. I whitelist several apps : Automagic, GMD gesture, Whatsapp, MiXplorer. I never clean my recent/RAM. I remove the "nuke button" from the configuration.
4. I don't know starting from which version, but since Nougat 7.0+, we have the setting to restrict data usage for each app in the app info. I simply create a flow to automagically open the app info everytime I install new app and decide whether to restrict the internet usage or not.
For ads, I just use hosts based - adaway. I don't limit play services, just let it run normally. I don't tweak much on the RAM side, but I adjust the minfree on every reboot (using automagic) to the lower value than default by RR. This is to let more apps stay on RAM as long as possible.
I don't want to limit the phone's perfomance to ridiculous level. Smartphone are meant to be used. The battery used is the proof we enjoy technology. Of course if the drain is unusual and wasted, we have to troubleshoot and find the culprit, as I have done in the wifi deep sleep drain bug. But other than those exception, I want the full user experience I can get from my phone.
SOT Variation
SOT is kinda non standard way to measure the usage. It varies depends on the user habit and usage behaviour. I am using dual SIM with good signal in most of the time, no microsd. Common usage :
- idle with no internet : 0,3-0,4%/hour
- idle with wifi : 0,5%/hour
- idle with LTE : 0,6-0,7%/hour
- Screen on dim (brightness < 10%) : 5%/hour (outside of idle drain)
- screen on bright (brighntess > 80%) : 10%/hour (outside of idle drain)
- Play game : Depends on game, it can consume 8-20%/hour
Using basic math, If 25% are used for the idle with wifi, I can get 25% / 0,5%/hour = 50 hours usage. 75% for screen dimmed, I can get 75% / 5%/hour = 15 hours. So 15 hours SOT is possible within 2 days usage. This interpolate nicely with my 70% 4-5 hours SOT.
But If I use the phone outdoor and the brightness increase, I can only get half of that, 7,5 hours SOT only within the same 2 days. Or maybe 9 hours SOT within 20 hours usage. If I have bad signal, it will reduce even further, 5-6 hours SOT only. Playing heavy game (PUBG) usually reduce the SOT by half too. So playing PUBG in dimmed brightness will consume 10%/hour and in brighter, 20%/hour. Increasing/decreasing the graphic also modify the drain per hour. Usually playing heavy game result in max 5-7 hours SOT only. But sometimes I can still get projected SOT around 10 hours, depends on what game I play and how many hours I played it.
Taking it to the extreme, we can spare 10% for the wifi idle, giving 20 hours usage and 90% for screen, giving 18 hours SOT. Which mean we can achieve 18 hours SOT within 20 hours usage. I am quite addicted to the phone. I use it for browsing, learning language, reading ebook, watching video, designing flow in automagic, usually without any gaming. But even then, it is very difficult to use the phone straight for 18 hours within those 20 hours (without gaming).
It is very difficult for me in usual daily activity to test the battery life till 1%. I usually have to plugged the phone for screen mirroring or transfer data. It will skew the battery usage then. I also usually just charge the phone at around 60-70, sometimes higher, sometimes lower.
At this kind of battery life and perfomance (SD636), I am very happy with current usage without the need to tweak so much again. Just use your phone as usual and only troubleshoot the battery life if something drain too much without doing anything useful. Enjoy your smartphone.

Clock using considerable battery

So i just got my phone and set up my timer to wake me up for work. I don't like using an alarm because due to not having a set bed time(I work nights).
Before I went to bed I finished charging the phone to 100% and set the time for 8hr and 30 minutes and to not disturb. When the timer went off I looked at the phone was at 57%. I looked at the battery usage and it showed the clock had used over 25% of the battery.
I've never noticed this being a problem with other phones till this one. Is this normal?

I'm guessing the timer is preventing the phone from going into dose / sleep mode, or keeps waking it up regularly while it counts down
You can hold the home button to activate Google assistant and just say something like "Set an alarm for 7 hours", assistant will say "Done" and your alarm will go off in 7 hours

Try clearing it's data. Start over.
Also possible battery usage is being misreported as another app may be responsible. I've seen this happen occasionally.

Lsantana954 said:
So i just got my phone and set up my timer to wake me up for work. I don't like using an alarm because due to not having a set bed time(I work nights).
Before I went to bed I finished charging the phone to 100% and set the time for 8hr and 30 minutes and to not disturb. When the timer went off I looked at the phone was at 57%. I looked at the battery usage and it showed the clock had used over 25% of the battery.
I've never noticed this being a problem with other phones till this one. Is this normal?
Click to expand...
Click to collapse
Wait....you set a Timer or an Alarm? I don't think a timer would allow the phone to sleep but I wouldn't expect it to use that much batter power. Was it background or foreground usage?

I set a timer. If I read it correctly it was active usage