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Hi,
I'm currently using JuicePlotter to see how my battery drains over time and this past night I think it drained more than it should (or maybe not).
For the ones who don't know, JuicePlotter runs in the background (of course) analyzing your battery, that too wastes battery juice of course. Thought, the app dev says on his website:
Perhaps the most important feature of JuicePlotter is that - unlike all similar apps and widgets - it's very battery friendly;
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Click to collapse
So I'm not sure if the problem lies on JuicePlotter or not, I'll have to test it one night without it...
This is how JuicePlotter displays it's graph:
The coloured bands along the graph show your screen brightness, radio usage, charging status and battery temperature. Just scroll around to find precise information and make sense of the different colours.
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Click to collapse
I went to bed at 4:10 with the battery at 97%. Around 13:00, it was at 89% and I didn't receive any calls/messages/mails/whatever during the night. The WiFi/3G was off all night along with the screen of course. The battery temperature remained the same too. I don't know if it makes a difference but I normally turn off Auto-Sync if the WiFi is off too.
Is it normal to lose 8% of battery juice in 9h in standby? I think it's a bit too much, but I don't know... Does the same happens to you too? What else cloud it be?
Interesting looking app. I've never noticed much of a lose overnight. Just installed the app, will fully charge and give you an update tomorrow.
Also how's the cell reception in your area? I've heard it can drain the battery a far bit if the reception is low.
Sent from my HTC Hero using XDA App
I'll have to do more testing but I think it's the app's problem... Tonight, I went to bed with 83% and it was exactly the same when I woke up...
I fully charged mine last night and turned on JuicePlotter. Still showing 100% this morning. Both in the app and on the phones battery indicator (in the notification bar). Do you know of any other apps similar to this that could be run in tandem?
Weird, Battery Graph also does the same thing...
This needs more days of testing on my part...
My battery goes from 100% - 0% in about 16hrs... doesn't matter how much I use the phone or not.
I have BatteryGraph but the results don't really mean anything to me as it just shows battery life vs time on a scale.
I'll try JuicePlotter to see if I can pin down exactly what's causing my terrible battery life.
I have a feeling it's running at full speed even when in standby but I'm not sure how to check if this is the case. Any ideas?
EDIT: Looking at BatteryGraph I've lost 15% in around 1hr... nothing unusual going on with my phone that I know about... just standard stuff running in the background. Perhaps the battery itself is simply past it's best.
CitizenLee said:
My battery goes from 100% - 0% in about 16hrs... doesn't matter how much I use the phone or not.
I have BatteryGraph but the results don't really mean anything to me as it just shows battery life vs time on a scale.
I'll try JuicePlotter to see if I can pin down exactly what's causing my terrible battery life.
I have a feeling it's running at full speed even when in standby but I'm not sure how to check if this is the case. Any ideas?
EDIT: Looking at BatteryGraph I've lost 15% in around 1hr... nothing unusual going on with my phone that I know about... just standard stuff running in the background. Perhaps the battery itself is simply past it's best.
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Click to collapse
Wow that is terrible, try apps like Taskpanel and when you add programs to your auto kill list the program kills the programs as long as they are running in the background when the screen is off, however if you are on lets say your browser and you don't go to your homescreen the screen goes off into stand by it will not kill the app. Also try draining your battery to the point it shuts down by itself, plug it in let it charge for a bit, boot into recovery wipe battery stats start up the phone or leave it off (your choice) and let it charge fully. Are you using setcpu or OC Widget or anything? If you are using SetCPU make a profile for when screen is off and make it underclocked like 264 Mhz to 480Mhz, or with OC Widget tick the 'use different screen frequencies' (don't remember what it is called since I don't use it) and do the same; I like SetCPU better because when you turn the screen on it switches profile faster where as OC Widget takes its time however with SetCPU do not use the widget it will cause Sense to FC and I'm not sure about Vanilla.
Hope this makes sense since all my ideas are said at once.
::EDIT::
shelnes said:
The way I've learned to recalibrate the battery is to let it go down to 5%, boot phone into recovery and wipe batterystats, then power off the phone. Let the phone charge until the green led is on without turning it on. Then turn on and use the phone as usual. Learned it over at modaco. Worked as a charm, and batterytime was improved. I have personally experienced strange batterybehaviour after periods with flashing a lot of roms.
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Here.
That's interesting...
Cause I've been playing with ROMs latetly, creating my own, testing hacks and stuff... And most of the time the phone is plugged and the battery is charged, during the flashing process it's using the battery and then it charges again. I also have to leave from time to time and when I get back I continue my stuff, meaning I'm charging the battery at high levels.
I'll have to try that calibrate method...
For now, for the past 2 nights, with JuicePlotter off, I've noticed the battery level did not change at all during the night. Tonight I'm going to try one more time with JuicePlotter on...
MentalDeath said:
Wow that is terrible
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Click to collapse
Wiped battery stats at 5% last night, let the phone die and then charged whislt off until green light came on. Been keeping an eye on it all day and there has been a noticable improvement.
The phone came off charge at around 2am (so around 12hrs ago) and it has only lost 20%, which is a lot better than I was getting before.
It was probably just due to me messing about with some many ROMs and update zips lately as I tend not to have too much crap running in the background (I use OSMonitor).
I will look into setCPU but I remember trying it before with VR12 and it ended up causing some weird problems meaning I needed to do a full wipe to get everything working again.
Thanks for the help
This night, with JuicePlotter on, I only lost 1%, seems reasonable now... I don't know why that one time I lost 8% during the night. Maybe an isolated case? Something was probably running when it shouldn't, I just don't know what.
Does the next update (2.1) somehow include a way to improve battery? I'm guessing no, wouldn't you need to replace the battery itself?
There may be battery performance improvements in the next update. My battery life is actually stellar. I set Timescape to update every 3 hrs and have brightness at about 75%. Off the charger at about 7am and at midnight that night I'm usually at around 40%. That's plenty good enough for me.
xperianewbie said:
Does the next update (2.1) somehow include a way to improve battery? I'm guessing no, wouldn't you need to replace the battery itself?
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Click to collapse
I dunno about the update and battery life but, Its 100% to 20% in 25-27 hours for me which i think is awesome as my usage is high.
Try setting the updates of your apps lower, check the Batt usage history from the settings menu to see what sucks the juice more.
If you want more battery life then you'll have to sacrifice some updates, which according to me ruins the entire purpose of having such a high-end smart Android device. Just use the phone the way you like it, have the charger with you always
Whatever phone you choose i think you are going to have this issue since batt usage depends solely upon the way you use your phone. In 2.1 live wallpapers suck more juice so you'll be advised to turn it off its either functionality or performance, the decision is yours
According to me any phone u buy will have same battery life or there is 70% Probability to have worst battery life. X10 has one the best battery life amongst all smartphones
Sent from my X10a using XDA App
sam_a200 said:
I dunno about the update and battery life but, Its 100% to 20% in 25-27 hours for me which i think is awesome as my usage is high.
Try setting the updates of your apps lower, check the Batt usage history from the settings menu to see what sucks the juice more.
If you want more battery life then you'll have to sacrifice some updates, which according to me ruins the entire purpose of having such a high-end smart Android device. Just use the phone the way you like it, have the charger with you always
Whatever phone you choose i think you are going to have this issue since batt usage depends solely upon the way you use your phone. In 2.1 live wallpapers suck more juice so you'll be advised to turn it off its either functionality or performance, the decision is yours
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Hmm... could it be just me? My battery went from 100% to 53% from just staying locked over night (around 9 hours). I checked what's been eating it and it said "Cell Standby" and "Display". My brightness is on the lowest possible and Wi-Fi and Bluetooth is constantly off. I'll check that Timescape stuff and try to get the App Killer from the Market... (if my device even had a market!).
nah this device is ****ed up ...
sony homepage says that standby time is around 450 hours .... (more then 17 days!)
i dont have timescape on autoupdate - the only thing i do is gmail push and i get 1 and maybe 1/2 day(s) of standy time (depends if i make 1 call or not )
the update should increase it a lot i think
btw if some1 has a 2nd phone please try this:
charge it fully and then turn it off completely ... after 17 days turn it on ... my bet is it wont turn on coz the akku is totally empty...
I have no Wi-Fi at my hotel and I don't have a data plan. How on earth does it drain this much battery. I'm gonna go turn off every app and try another night just on standby.
Have a read of these...
X10 Power Usage
Battery life improvment thread
Battery Life Guide - Worth a read if you are having issues.
Jesus, what a difference a tweak makes. (Battery)
xperianewbie said:
Hmm... could it be just me? My battery went from 100% to 53% from just staying locked over night (around 9 hours).
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Click to collapse
Good question for you actually, how long have you had the phone? my first 4-5 charges were appauling but it quickly got better and now i could not be happier. more often than not getting 7am - 11pm the next day (whats that, 40 hours or so?) out of one charge, with plenty of go left.
Mine is running RB##26 firmware, rooted and a chunk of apps deleted though.
When i first got mine it was a bit poo, remember for the first 5 or so charges to let the battery go down pretty low and it will improve battery life.
Get runcpu and you're golden.
Sent from my X10a using XDA App
Sounds like you're running 014 firmware - I had the exact same problem until I updated to 020. The whole battery usage profile changed and one hour of standby only uses up 1-2%.
yeah, the 020 u/g makes a difference. I've rooted and overclocked mine, heavy usage on 3g can drain the battery in c12 hours but more than adequate for general usage
I'm a big user. Even with my G1, I was happy with a day's use. Anyone who thinks they're gonna get days of use without a charge is kidding themselves. A smart phone with a big screen us gonna suck juice regardless of what you do. As many an XDA user will tell you, keep your charger or at least the cable with you wherever you are. With FW026 it did help a little, but if you need life from your battery you really do need to sacrifice some of your widgets or updates.
MrZ
Today my battery have gone to 10% in about 10/11 hours, i'm using sip and wireless are active all day, even when it are on standby, installed some apps and played some games, some calls, its good enough, sometimes i get 2 days, depends on what you do, you can do some tricks...
I decided to do a "best case scenario" test, and see if some of my battery issues were from apps gone awry, or some other drain. I pulled my phone off the charger right after it went green, and let it sit on the table. Wifi is off, BT is on, and I'm using my airave, so the signal is a full 6 bars all the time. I have 3 email accounts configured. Two of them are direct push, and one is an IMAP poll once every 15 minutes. Few, if any, emails were received during this test. The breakdown is like this:
4hrs, 32mins on battery. Battery currently at 92%
Cell Standby: 33%
Phone Idle: 32%
Display: 23% (the display was only on for about 30 seconds of the entire test)
Bluetooth: 4%
Maps: 4%
Android OS: 4%
So at least i know there isn't a process running that is making my battery next to useless. My battery seems to be getting slightly better with each day of use, but I still can't wait for the extended battery/cover to be released. I really got used to that on my Evo.
Dave
that sounds a lot better than my setup.
I went from a full charge to 50% with very light usage in 8hrs . I've been asleep for over 7 hours.
Display: 29%
Cell Standby: 27%
Phone Idle: 26%
Android OS: 7%
Voice calls: 5%
Maps: 5%
However, I have horrible reception in my house, even next to the windows. All's fine as soon as i step out the door.
I've found that a weak signal has a dramatic affect on battery life with these phones. They do so much syncing in the background, and it takes so much longer with a weak signal (not to mention it has to transmit at a higher power). The signal makes all the difference.
Call sprint and get yourself an airave! They gave me mine for free.
Dave
do you guys have the display setting on auto or low brightness. My display usage is always through the roog. I am getting decent battery life. I turn 4g off usually and just use 3g unless I am gonna watch youtube videos or sometihng.
I unplugged the phone at 7:15 this morning and I have email, facebook all syncing. wifi off and I am at 92%. So far this phone is being very good at battery life, specially after the first few cycles.
nkd said:
do you guys have the display setting on auto or low brightness. My display usage is always through the roog. I am getting decent battery life. I turn 4g off usually and just use 3g unless I am gonna watch youtube videos or sometihng.
I unplugged the phone at 7:15 this morning and I have email, facebook all syncing. wifi off and I am at 92%. So far this phone is being very good at battery life, specially after the first few cycles.
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Click to collapse
My display is set to auto brightness.
nkd said:
do you guys have the display setting on auto or low brightness. My display usage is always through the roog. I am getting decent battery life. I turn 4g off usually and just use 3g unless I am gonna watch youtube videos or sometihng.
I unplugged the phone at 7:15 this morning and I have email, facebook all syncing. wifi off and I am at 92%. So far this phone is being very good at battery life, specially after the first few cycles.
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Click to collapse
I have mine set at a number. I use a program to change my brightness at night.
7.5hrs & 70% battery left!!
Is it better to have the brightness automatic or a number like 30 percent?
Sent from my PG86100 using XDA App
I just use auto brightness, I had about 11 hours use and 80% remaining taking a bunch of pictures, a little navigation and texting. This is with wifi on about half the time.
My battery was crap for the first three days with the phone, after calibrating the battery and giving it a few cycles its been really good for me. I do top off the battery usually before I pull it off the charger for the day.
I have mine set to auto and I see it changes even as I'm typing this message. Truth be told, the battery does drain when we don't have good signal...
Sent from my PG86100 using XDA Premium App
nhutpham said:
I just use auto brightness, I had about 11 hours use and 80% remaining taking a bunch of pictures, a little navigation and texting. This is with wifi on about half the time.
My battery was crap for the first three days with the phone, after calibrating the battery and giving it a few cycles its been really good for me. I do top off the battery usually before I pull it off the charger for the day.
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Click to collapse
What do you mean by calibrate?
LostRib said:
Is it better to have the brightness automatic or a number like 30 percent?
Sent from my PG86100 using XDA App
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Click to collapse
Auto brightness us worse for your battery. This is because it has to use sensors every set time interval to check the lighting. It's not a TERRIBLE drain, but over the course of 4-5 hours it would probably save you 5-6% if you set it something lower .
And to the other person who asked, your battery life is SIGNIFICANTLY lowered when you have poor signal. What happens is your phone's radio draws extra power when it has poor reception in order to boost its range/signal. For those of you who work in places with poor signal, I bet you can attest to this
Also, I have a few battery tips in my signature if you're interested in more. It's slightly outdated (as in there are more methods now), but everything in the article is still true
LostRib said:
What do you mean by calibrate?
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Fully charge your phone, then use it until the battery complete drops...Then charge it again
How many cycles have people run on their batteries? IE full to dead?
I have auto brightness, GPS on Bluetooth on, email sync every 3 hours, weather sync evey 3 live wallpapers, and I forget the rest. Battery lasts me 12-24 hours, which is about what I got with my Hero modded out with setcpu and etc. I like the battery life of this phone.
guitardoc64 said:
I have auto brightness, GPS on Bluetooth on, email sync every 3 hours, weather sync evey 3 live wallpapers, and I forget the rest. Battery lasts me 12-24 hours, which is about what I got with my Hero modded out with setcpu and etc. I like the battery life of this phone.
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Click to collapse
How much screen time?
LostRib said:
What do you mean by calibrate?
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My phone died in about 6-7 hours of steady drain, then I calibrated by doing the same thing they told us to do with the OG evo.
Charge over 8 hours, turn off the phone charge another hour, turn the phone on charge another hour.
I top off by using the phone for a couple minutes, then putting it back on the charger until full. The phone clearly goes down to 95% from full while charging and back up, I like how on this phone you can see that it does it on the battery graph so you know.
I've had my phone off the charger for like 34 hours and I'm at around 48 percent battery remaining. Not heavy usage but not super light either.
LostRib said:
How much screen time?
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69% as of now. I had to reboot today so I can't say this is average. I know there are issues that can't be fixed until root, but as a stock ROM, it seems the power management isn't half bad.
guitardoc64 said:
69% as of now. I had to reboot today so I can't say this is average. I know there are issues that can't be fixed until root, but as a stock ROM, it seems the power management isn't half bad.
Click to expand...
Click to collapse
Sense has always been pretty good about power management (especially when you consider the puny batteries they put in their phones), and an asymmetric dual core processor definitely doesn't hurt haha
So across all roms I have tried the display literally destroys the battery life of my phone. While the screen is off I get fine battery life. But when the screen is on I can watch my percentage decrease about 2-3% every minute so after a half hour of browsing my battery is gone.
I have an extended battery as well but that just prolongs it slightly. The brightness is about half right now. Is this normal?
Does not sound Normal but display is the largest user of battery( unless one can use the phone with display off
I had as video streaming yesterday for 30+ min from 80% it went to 14%
haven't tried keeping just display on should try that ...test for tomorrow
NickTheMajin said:
So across all roms I have tried the display literally destroys the battery life of my phone. While the screen is off I get fine battery life. But when the screen is on I can watch my percentage decrease about 2-3% every minute so after a half hour of browsing my battery is gone.
I have an extended battery as well but that just prolongs it slightly. The brightness is about half right now. Is this normal?
Click to expand...
Click to collapse
I have my brightness set to 15% and it still sucks about half of my battery use. The display is unfortunately nearly unstoppable when it comes to battery drain. HTC and others are like "BIG PHONE DISPLAY!!!1!111!" we're all like "I can haz batteries?"
That description is the best description of our issue.
But an answer to your question, drop you brightness to as low as you can stand it and if possible try to limit the amount of times you wake the display in a day the juice it requires to turn it on is greater than it needs to sustain the screen on.
I would say yes for the most part. We have a fantastic and power hungry display...the price for greatness?
That being said, its not so bad dropped down to 25% or so, and easily viewable, except if you're outside.
Sent from my ADR6425LVW using Tapatalk 2
Alright thanks. I just wanted to make sure my phone wasn't experiencing something that is atypical. Other than that I do love this phone and the developers
It's hard to say. With screen on I loose about 1% a minute even with auto-brightness turned off and the screen at around 25%.
There are others on the forum that have made rather amazing battery life claims so it may come down the the individual device.
I have debated about returning mine for a different one to see if I get any better performance.
Diesel_71 said:
It's hard to say. With screen on I loose about 1% a minute even with auto-brightness turned off and the screen at around 25%.
There are others on the forum that have made rather amazing battery life claims so it may come down the the individual device.
I have debated about returning mine for a different one to see if I get any better performance.
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Click to collapse
I'm not sure I would bother chasing longer battery life with new devices. A lot of those are very optimized use cases -- either all on wifi, all in areas with great signal, or lots of screen on time but they don't mention what brightness. The fact of the matter is the phone has a tiny battery and uses up a lot of power for the display and radios. I get somewhere between 12-16 hours on a stock battery, depending on where I am and how much I use the phone (generally I'm a pretty light user, but I do leave 4G and Bluetooth on all day).
Hey guys, I am having a problem with my Amaze, more specifically, the battery is dying absolutely WAY to quickly. For example, yesterday morning, after unplugging my fully charged phone, I dropped it straight into my pocket, and maybe looked at it twice the entire day. When I pull it it at the end of the day, the battery is red, with 8% left. If I were to be using it, the battery would last about 30 minutes on a full charge, most likely. I've also noticed that the phone is really hot, even in my pocket. If it helps, I am on ICS and have been using it since it was leaked in April, however, this problem is new (about 2 days ago is when it first started), as I usually get about 8-10 hours with moderate usage. Can you guys please help me? Thanks!
Well if it just started happening recently, and you haven't made any changes, then the battery may just be going bad... If that's the case, you can call HTC and they will send you one free replacement.
sent from my NRGized Amaze,
powered by faux kernel v.10
could be just the battery.. but if you don't mind me asking - how long have you owned the device? I suggest you dl JuiceDefender from the playstore and see if that helps - Definitely helps my device get through the day with moderate use and one time charge every 1 1/4 a day but this could vary on owners usage. Also, check your settings to conserve battery life such as turning off wifi, gps, auto syncs on your fb, gmail etc. and adjust your brightness to the lowest if possible and OH... less widgets and windows > less power that the battery consumes. Hope that helps!
b33j7030 said:
could be just the battery.. but if you don't mind me asking - how long have you owned the device? I suggest you dl JuiceDefender from the playstore and see if that helps - Definitely helps my device get through the day with moderate use and one time charge every 1 1/4 a day but this could vary on owners usage. Also, check your settings to conserve battery life such as turning off wifi, gps, auto syncs on your fb, gmail etc. and adjust your brightness to the lowest if possible and OH... less widgets and windows > less power that the battery consumes. Hope that helps!
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Click to collapse
Like I said, this just started happening. I didn't just decide to leave all my wifi and GPS and Bluetooth on all day. Also, to answer your question, I've had it since the beginning of the year. I think it's just the battery. I'll call HTC and report back.
cool.. i'm hoping its just the battery.
b33j7030 said:
cool.. i'm hoping its just the battery.
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Click to collapse
Thanks. The overheating does concern me a bit, however.
HarryHyper said:
Thanks. The overheating does concern me a bit, however.
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you're not alone in that dept but its highly tolerable... look on the bright side.. least you'll have a pocket warmer during WINTER lol
b33j7030 said:
you're not alone in that dept but its highly tolerable... look on the bright side.. least you'll have a pocket warmer during WINTER lol
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Click to collapse
LOL.
Alright guys, looks like it solved itself. Interesting...
I usually only get 6-8 hours on my battery, and its been like that from the beginning. is there something wrong with my phone then?
erkk_69 said:
I usually only get 6-8 hours on my battery, and its been like that from the beginning. is there something wrong with my phone then?
Click to expand...
Click to collapse
Nope, battery life isn't that great with this phone, depending on how much you use your phone and what all you use it for you will get any where from 6-14 hrs + or - some. Also your Rom and kernel will make a difference..
sent from my NRGized Amaze,
powered by faux kernel v.10
I find usually its the user when it comes to battery I get roughly 20 hours with regular use
Sent from my HTC_Amaze_4G using xda premium
HarryHyper said:
Alright guys, looks like it solved itself. Interesting...
Click to expand...
Click to collapse
Nice!... Glad to hear
This happens to me from time to time, and the phone is ALWAYS hot when this happens.
What I've come to discover that it's usually something that' activating the phone while asleep.
The phone is hot, because the processor is being used. That's why the battery is completely dead so quickly, something is pulling it out of deep sleep and causing it to run full bore. The key sign is the phone is hot.
I recommend you get an app that lets you see wakelocks, and what's keeping the phone awake etc (I use GSAM battery monitor) Whenever I notice my phone becoming hot for no apparent reason, I know for a FACT that my battery will be dead in a matter of hours. Lately it has been "Android System" that's the culprit, and I can't quite nail down what is doing it, but it's very random and not much of a problem because I do a reboot and things are back to normal.
First, try to reboot your phone. Get system tuner and see what processes are using the processor when the phone is hot (make sure you show ALL processes, even the default excluded ones). Check the wakelocks. Get battery monitor and check the mA usage (it keeps a running history). When my phone is running optimally, I have a mA drain of around 70-90mA when screen off/deep sleep, and it should maintain this type of drain... when my phone is becoming hot for no reason, I see numbers anywhere from 300-600mA drain for no apparent reason. A lot of the time there was an APP that was offending, so I would first check that. Like I said though lately it has been "Android System" and it's kind of hard to nail that down, but it's so random.
When my phone is cool to the touch most of the time, I know it's running optimally because it's achieving deep sleep. I've found a lot of it has to do with what you had running before you turn the screen off. A reboot ALWAYS fixes it for me. If you can't seem to nail down the offending app, do a full reset back to stock and you should notice that your phone runs very very cool when the screen is off and it's sleeping. I usually get anywhere from 24hrs-2 days of moderate use with the screen off governor set to conservative, and maximum clock for screen off ~600mHZ. I use interactive governor for screen on, but that's for responsiveness and you'll probably have better luck with ondemand for battery life. YOu can set these in System Tuner.
Just remember, if the phone is HOT, it's using energy. If it's hot, something, somewhere, is causing the processor to run at a high clock frequency. If the phone is HOT after being in your pocket/screen off for a good amount of time, something is definitely wrong/rogue app. The phone should never be hot returning from deep sleep. I bet if you check your default battery monitor (The android one) you'll notice that the bar for AWAKE is probably almost solid blue, something is preventing it from going into deep sleep. If I notice my phone is hot when I take it out of my pocket, I immediately know that something isn't right. This should NOT happen.
sportsstar89 said:
I find usually its the user when it comes to battery I get roughly 20 hours with regular use
Sent from my HTC_Amaze_4G using xda premium
Click to expand...
Click to collapse
I'm just past my 9th day of using my Amaze 4G.... so far, if I turn off data and turn off autosync, my drain per hour goes below 1%/hour... so i could get >50 hour idle battery life + 4 hours screen usage
with data on and autosync off, maybe 2%/hour -> this translates to ~ 20hour idle battery life + 4 hour screen usage
with data on and autosync on, maybe 4%/hour -> 10 hour idle battery + 4 hour screen usage
I have only calendar widget on my home page, only Google Accounts on auto-sync (2 mail account, 1 contact, 1 calendar)....
EnergyROM 6.21.2012 ICS 4.0.3, faux kernel 0.07, ankor battery
ericdjobs said:
This happens to me from time to time, and the phone is ALWAYS hot when this happens.
What I've come to discover that it's usually something that' activating the phone while asleep.
The phone is hot, because the processor is being used. That's why the battery is completely dead so quickly, something is pulling it out of deep sleep and causing it to run full bore. The key sign is the phone is hot.
I recommend you get an app that lets you see wakelocks, and what's keeping the phone awake etc (I use GSAM battery monitor) Whenever I notice my phone becoming hot for no apparent reason, I know for a FACT that my battery will be dead in a matter of hours. Lately it has been "Android System" that's the culprit, and I can't quite nail down what is doing it, but it's very random and not much of a problem because I do a reboot and things are back to normal.
First, try to reboot your phone. Get system tuner and see what processes are using the processor when the phone is hot (make sure you show ALL processes, even the default excluded ones). Check the wakelocks. Get battery monitor and check the mA usage (it keeps a running history). When my phone is running optimally, I have a mA drain of around 70-90mA when screen off/deep sleep, and it should maintain this type of drain... when my phone is becoming hot for no reason, I see numbers anywhere from 300-600mA drain for no apparent reason. A lot of the time there was an APP that was offending, so I would first check that. Like I said though lately it has been "Android System" and it's kind of hard to nail that down, but it's so random.
When my phone is cool to the touch most of the time, I know it's running optimally because it's achieving deep sleep. I've found a lot of it has to do with what you had running before you turn the screen off. A reboot ALWAYS fixes it for me. If you can't seem to nail down the offending app, do a full reset back to stock and you should notice that your phone runs very very cool when the screen is off and it's sleeping. I usually get anywhere from 24hrs-2 days of moderate use with the screen off governor set to conservative, and maximum clock for screen off ~600mHZ. I use interactive governor for screen on, but that's for responsiveness and you'll probably have better luck with ondemand for battery life. YOu can set these in System Tuner.
Just remember, if the phone is HOT, it's using energy. If it's hot, something, somewhere, is causing the processor to run at a high clock frequency. If the phone is HOT after being in your pocket/screen off for a good amount of time, something is definitely wrong/rogue app. The phone should never be hot returning from deep sleep. I bet if you check your default battery monitor (The android one) you'll notice that the bar for AWAKE is probably almost solid blue, something is preventing it from going into deep sleep. If I notice my phone is hot when I take it out of my pocket, I immediately know that something isn't right. This should NOT happen.
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what program do you use to measure battery drain? I use Battery Monitor Widget, but it's not giving me an accurate answer (lets say I had the phone on idle w/o data/sync... the available % is stable over 5 hours (~1% loss per hour), but the current usage says at least -100mAh)
for me, the idle battery drain (apps autosyncing/using data) is the problem
I see my device properly going to sleep (deep sleep is the majority of the usage, not too many wakelocks/processes.....)
with data off and sync off, idle battery usage goes to a minimum
paperWastage said:
I'm just past my 9th day of using my Amaze 4G.... so far, if I turn off data and turn off autosync, my drain per hour goes below 1%/hour... so i could get >50 hour idle battery life + 4 hours screen usage
with data on and autosync off, maybe 2%/hour -> this translates to ~ 20hour idle battery life + 4 hour screen usage
with data on and autosync on, maybe 4%/hour -> 10 hour idle battery + 4 hour screen usage
I have only calendar widget on my home page, only Google Accounts on auto-sync (2 mail account, 1 contact, 1 calendar)....
EnergyROM 6.21.2012 ICS 4.0.3, faux kernel 0.07, ankor battery
what program do you use to measure battery drain? I use Battery Monitor Widget, but it's not giving me an accurate answer (lets say I had the phone on idle w/o data/sync... the available % is stable over 5 hours (~1% loss per hour), but the current usage says at least -100mAh)
for me, the idle battery drain (apps autosyncing/using data) is the problem
I see my device properly going to sleep (deep sleep is the majority of the usage, not too many wakelocks/processes.....)
with data off and sync off, idle battery usage goes to a minimum
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Click to collapse
I use battery monitor widget to measure drain.. as far as accuracy, I'm not sure? I don't know if it's EXACT but it seems to be a pretty good indicator of drain. When in deep sleep the phone usually measures anywhere from 70~mA-120mA. Usually it stays below 100. Before I changed the screen off governor / max freq (screen off) it was almost always 100+. Screen off governor is conservative with a max freq of ~600MHz.
I have no idea how exact it is, but when it's reporting ~300mA, my battery is definitely draining much faster.. and when it's reporting 500-900mA~ my battery is draining incredibly fast, so it at least seems to be a solid indicator of current usage.
ericdjobs said:
I use battery monitor widget to measure drain.. as far as accuracy, I'm not sure? I don't know if it's EXACT but it seems to be a pretty good indicator of drain. When in deep sleep the phone usually measures anywhere from 70~mA-120mA. Usually it stays below 100. Before I changed the screen off governor / max freq (screen off) it was almost always 100+. Screen off governor is conservative with a max freq of ~600MHz.
I have no idea how exact it is, but when it's reporting ~300mA, my battery is definitely draining much faster.. and when it's reporting 500-900mA~ my battery is draining incredibly fast, so it at least seems to be a solid indicator of current usage.
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On my previous phone (LG Optimus T / Optimus One/ P509, CM9 ICS ROM), Battery Monitor Widget reports more accurate readings (idle with data off= -2mA or -20mA<dont remember>, accurately representing that 1% of battery would last at least 2 hours)
Phone with the new kernel (KozmiK Ruby -0.5a) still goes battery drain crazy (even with Juice Defender installed now).... I hit 10%, then got fed up, turned off data... then the phone slowly sipped battery for the next 3 hours going down only 1%.... sigh
I think Facebook Messenger is the data hogger in my case, since I do use it often... will try a new ROM build without logging onto facebook messenger, see how it goes
paperWastage said:
I'm just past my 9th day of using my Amaze 4G.... so far, if I turn off data and turn off autosync, my drain per hour goes below 1%/hour... so i could get >50 hour idle battery life + 4 hours screen usage
with data on and autosync off, maybe 2%/hour -> this translates to ~ 20hour idle battery life + 4 hour screen usage
with data on and autosync on, maybe 4%/hour -> 10 hour idle battery + 4 hour screen usage
I have only calendar widget on my home page, only Google Accounts on auto-sync (2 mail account, 1 contact, 1 calendar)....
EnergyROM 6.21.2012 ICS 4.0.3, faux kernel 0.07, ankor battery
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Click to collapse
What you said is true, at least for data on - autosync on. My battery last around 10 hours idle + 3.5 - 4 hours on screen usage. It seems that autosync eats a lot of battery. Will try to turn that monster off and see how much it will improve. I have bad habit to push refresh button on gmail/facebook widget, even with autosync on,
I used to get 14-16 hours. Now my battery won't last more than 6 hours. I gotta replace my Anker
Sent From My HTC Amaze 4G via Someone's Room
Most recently I got 1 day and five hours with a fair amount of use by using faux 011 kernel and using CPU editor script to set it to battery saving profile. I'm at 45% right now with fairly heavy use after over 18 hours.
Battery life is totally under your control, it takes some work to get it where you want it.. but you also have the option of buying a bigger anker battery with external charger for $20 and carrying that spare battery, and simply not giving a damn.
Just saying, battery doesn't have to matter for a very small price and a little space to carry the spare battery in your pocket.
Sent from my HTC_Amaze_4G using xda app-developers app