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I did with my 2.1 same as 1.6. removed unwanted apps. using taskkiller and autorun killer same way. holding wifi, gps, and bluetooth off. everything i do is same. I'm not using live wallpapers.
With 1.6 there was no problem keeping phone uncharged for 4 days.
With 2.1 it's like one day or little bit more.
What can i do to make battery not drawn so quickly ???
You shouldent use a taskkiller on 2.1 since it does that by itself. Using taskkiller will make your phone to force start apps again to shut down.
Sent from my U20i using XDA App
4 days uncharged!?!?
My phones battery runs approx. 10 hrs standby + 4 hrs of use (screen on) on a full charge..
I also think that there are some battery issues.. On 1.6 it would last about 14-16 hours. Enough to use it during day and keep it charging overnight. Now I have to charge it twice per day Looking at the built in what uses battery app it says that the major draws are phone not in use (30%), screen (40%) and wireless (15%).
Any suggestions on what app i can use to micro manage what is using battery even further?
Found a program http://ziyang.eecs.umich.edu/projects/powertutor/UMLogger-release-signed.apk that does exactly what i wanted. Shows battery usage per system wise (lcd, wifi, 3g, etc) and can also get down to real details, showing battery usage per process. This way you can determine what is hogging that battery.
I left my mini in standby mode during the night and in 10 hours it only used 5% of the battery indicator. in theory I have 200 hours in standby... dont have any issue with battery myself.
In daytime use the battery goes way faster but still can do a day without charging with moderate use (3g, wi-fi enabled)
I have all the auto-syncs off and i do use the task killer but it is set to kill himself 2 when i hit the kill button.
hope this helps
Be careful, to use a task killer or similar on 2.1 maybe worse than you don't use it... it isn't recomended from 2.0 and above to use a task killer, because of the own task administrator of Android... Remember that this operative system "learns" your most used apps... the less ones... and admins the process, so be patient and wait some more days and some reboots...
Certainly I have to say that I realize that my batt is a little bit longer... but let's wait to make a real feedback...
i'm using taskkiller because of some programs like "Quick System Info" ver 1.4.5. I can't find any other way to close this app. I can remove icons from notification bar. but app is still running. Any ideas for that ?
On standby for 9 hours i'm getting 30% less battery.
Is android 2.1 supposed to use less battery anyway ? seriously considering going back to 1.6
Mine has been running for 20 hours now since fully charged and still has 54% of the battery. This is with 2h 15mins out of standby watching Youtube videos and talking on the phone.
Wifi is always on, Bluetooth is also always on. And yes, 2.1 does better battery conservancy for me: with 1.6 sometimes the phone wouldn't go into standby thus killing e.g. 30% of the battery over night doing nothing. I haven't noticed anything similar since I upgraded to 2.1.
I only use advanced task killer rarely if I want to kill a running process. No auto-kills...
P.S. Also I only use 2G.
Skype also eats a lot of battery. i cant find a way to turn it off other than with a task killer
O skype, if you go to 3rt. tab (I think its "My info".. My system is not in english) menu button will show an opt to disconnect, that completly leave app.
its fine to use task killer, JUST end tasks yourself with the end all button.
CERTAINLY dont put auto-kill processes or ur battery will die, hope it helps.
Hi,
For those of you that have Battery Monitor Widget installed, what kind of average usage are you seeing with the phone idle, screen off?
On my old Desire it'd sit at something around low double digits, 10mA or so idle with the screen off...
On my new shiny SGSII it's at about 180mA odd, which may explain why I struggle to get a days usage out of it. I've tried different ROMs (stock rooted, lite'ning, currently on villain 2.4.2) and different modems (currently KG6) and have used Ti to freeze all of the samsung bloatware without any improvement...
What kinds of values are others seeing?
Thanks
Jon
in idle , i get average of 50-60mA .. but after 3,4 hours of idle , i can get it as low as 9-10mA .. running on sensation rom 1.4 .. in normal use , it will hike from 100+ma to 400mA ..
it's actually a bit higher than my last desire HD. which in idle can get as low as 4-5 mA .. i guess that's all depend on the kernel ..
seeing at your idle usage about 180mA, that's definitely have something wrong somewhere. gotta find what apps draining the battery
Just did a test while I was down the gym - with mobile data off, but streaming music to a bluetooth headset, it was down to 60-80mA. Turn it back on and it's gone back up again...
Gtalk is frozen, Latitude isn't signed in... Nothing obvious shows up in Better Battyer Stats.. Other than removing apps one by one, any bright ideas as to how to work out which is the culprit?
I think i read that HTC phones actuality give true mah battery rates where on the S2 it is only get`s estimated.
I fully charged it last night, and left it alone overnight. Perfect signal (local picocell about 10 ft away), pretty much everything disabled, all user apps, samsung stuff frozen - only google apps unfrozen. Background data disabled, bluetooth, gps, wifi off.
After a few minutes, after a short while at 60mA odd it sat idling at about 9mA pretty much all night - used about 8% overnight. I re-enabled background sync, now sat on my desk at work with a reasonable 3G signal it's sat at about 60mA.
Time to start unfreezing apps and see what's draining it!
=jon= said:
Time to start unfreezing apps and see what's draining it!
Click to expand...
Click to collapse
Install 'Better Battery Stats' for that.
Regards.
ithehappy said:
Install 'Better Battery Stats' for that.
Regards.
Click to expand...
Click to collapse
It's installed - I get a lot of events/0 and suspend listed in process, and not that many wakelocks listed...
I've just frozen the samsung email client (exchange) and the associated processes, and my usage has dropped from 60-100mA at idle to under 20 - looks like this may be the culprit!
Going to try unfreezing it and seeing if it goes back up again...
I gave up trying to freeze / unfreeze stuff - too much hassle.
So - did a factory reset this morning, so back to a totally fresh villain install. I even removed my 32G sd card in case that was causing issues..
Disabled automatic app re-installing, and have been slowly setting things back up while watching the juice usage.
Currently with touchwiz and all of the samsung crap frozen, no widgets running, my 2 gmail accounts and exchange activesync configured, and it's idling at about 50-60mA.
It's going to be a pretty drawn out process working out what's causing the drain
Hi all,
I love the Sony Tablet except its battery life. for something that is so huge compared to the others similar products out there, I am sure that they could have squeezed a bigger battery into the unit.
The power capacity is pretty weak. Let's hope that Sony offers a higher capacity battery size. I would gladly pay to upgrade it.
That's weird, my battery life is fantastic. If I play games on it all day it'll last 8-12 hours, but if I just use it intermittently and moderately it'll easily last me a couple of days. On standby it only uses a couple percent a day if that!
I'm the same as unclespoon. Even during heavy use, I get about 9 hours, which is way better than my old Galaxy Tab could ever muster. Standby usage is crazy low, its fantastic!
Not sure what you mean either about being larger than most other devices. The Tablet's 9.4" screen is smaller than almost any other full-size Tab out there (including the iPad) and since the back curves, theres not actually a lot of usable rear space (look at how thin its getting at the thin end, now imagine trying to fit a battery in there!)
I'm not sure you'll find a Tab out there currently with a better combo of size/battery life. The chunkier Toshiba Thrive will last longer, the thinner Galaxy Tab's will last even less, and my Tablet S always outlasts my iPad, so it might just be your device. Try checking Settings -> About -> Battery Use
I'm of the same opinion as the op. My tablet s has dreadful battery life and especially when it isn't doing anything. (50% usage is system standby) my old galaxy 7 was far far better (charged about once a week)
I believe this may just be because it is new (only have 1 full charge) as my galaxy s2 was initially unimpressive and then lasted 3 days of moderate use without charge. Hoping the same will happen to my s1.
Time will tell
My only guess was that you did a shoddy job of conditioning the battery. My old Galaxy Tab (the first 7" one) was hopeless, but when I replaced it, I conditioned the battery better and it was a bit better.
My Tablet S lasts for days and days and the standby usage is tiny. Check whats using your battery in the Battery Use screen and get back to us, we might be able to help..
I noticed advanced wifi lock was causing massive amounts of wakelocks (8 hours out of 10 according to the stats in settings/about).
betterbatterystats is not available via market but I am trying out the XDA APK now
wintermute000 said:
I noticed advanced wifi lock was causing massive amounts of wakelocks (8 hours out of 10 according to the stats in settings/about).
betterbatterystats is not available via market but I am trying out the XDA APK now
Click to expand...
Click to collapse
I noticed that as well. If you have Advanced WiFi lock activated the tablet won't go into deep sleep mode, there of massive battery usage. I still have Advanced WiFi lock on my tablet, but only activate it when I need to download/update something that takes time. Otherwise I turn it off. It's not worth the battry drain.
Wow. Your battery life are fantastic. 9 hours? That's huge. I have not used my Sony Tablet till flat but given the rate of battery loss think maybe the most is about 5 hours which is similar to what many reviewers are saying.
Just can't imagine that those reviewers are so far out of the ball park compared to you guys. I am using juice defender Beta. Not to sure if its helping or not. But at least if I not using WiFi it shuts it off automatically.
My battery used to drain badly during standby. I found that the Friend Stream service was preventing the tab from sleeping. Killed the service a while ago and battery has been fantastic since. Pushed it to 3 days with light use. About 3 hrs of browsing and facebook. My battery level is at 68%, been off power for 20h40 mins, and used for about 4hrs today - facebooking, Internet browsing. Note that no specific conditioning was performed.
What are the settings that you have on your Tablet? Auto brightness, background sync turned off ?
how did you stop friendstream, and what the heck is it, did you just kill the process and it stayed dead? (sometimes as u know u kill process but it will come back).
Good question. What is the Android software revision now. My is Android 3.2.1 (revision 2)
I acutally just uninstalled the crap-app. nothing I use anyway. It is an app for facebook, twitter and other social networks. So just get rid of it. Uninstall and be happy
my bad. I confused the HTC name and Sony name.
Social Feed Reader was misbehaving. Once started it kept running... rather than dropping off to sleep (and into Cached Apps).
Something wasn't right so I force stopped it and it stayed dead.
An additional note - the Setup, Applications, Running Applications feature isn't 100%. Some background apps aren't displaying as running or Cached. Go figure.
So any special method to stop the social feed reader?
I'm getting those kinds of numbers on mostly auto brightness (and sometimes lower, at night), with background sync turned on, WiFi sleep policy set to default, and no battery monitoring or saving apps running. The only thing I did was single initial conditioning cycle and since then its been great.
Also note that software-decoded video files will take a lot more of your battery than the equivalent properly encoded file. I havent had any trouble with Social Feed Reader, but I never even set it up and judging by the many stories around here, I would uninstall it if you're worried about battery..
asayanna said:
My battery used to drain badly during standby. I found that the Friend Stream service was preventing the tab from sleeping. Killed the service a while ago and battery has been fantastic since. Pushed it to 3 days with light use. About 3 hrs of browsing and facebook. My battery level is at 68%, been off power for 20h40 mins, and used for about 4hrs today - facebooking, Internet browsing. Note that no specific conditioning was performed.
Click to expand...
Click to collapse
good to know, thanks for sharing.
agc93 said:
I'm getting those kinds of numbers on mostly auto brightness (and sometimes lower, at night), with background sync turned on, WiFi sleep policy set to default, and no battery monitoring or saving apps running. The only thing I did was single initial conditioning cycle and since then its been great.
Also note that software-decoded video files will take a lot more of your battery than the equivalent properly encoded file. I havent had any trouble with Social Feed Reader, but I never even set it up and judging by the many stories around here, I would uninstall it if you're worried about battery..
Click to expand...
Click to collapse
Hi, that's good to know. Thanks for sharing. Unfortunately think I screwed up the initial conditioning. so I guess I will have to live with the 5 hour battery of my Tablet.
Btw how do you do battery conditioning?
cow138 said:
So any special method to stop the social feed reader?
Click to expand...
Click to collapse
In Setup, Applications, Running Services have a look at the awake time (listed on the right side) of the running processes. You'll note that system processes (the ones with the Android icon) have been awake since last boot.... but you might finds others that are as well. I noted Social Feed Reader showing high awake time and decided to nuke it. Simply click the offending app. You'll be given the option to stop the app... which is what I did. It's an app so doesn't restart once killed. Hope that helps...
Final thought: at the top right of the screen there's a 'Show cached processes' option.
The could be an offending app in there. Kill any installed app you suspect might be a problem and see if that helps.
my battery life is excellent.
Sent from my GT-I9100 using xda premium
Hi All, I have been using the Xda for long time and I am a bit greed and I never register, yep that's right, hate plz come.
But anyway, I have used too many phones that I can't even remember.
Last couples of week, I got rid off my Nexus one and got A Razr, but the disparagement start right with the battery life!
First a few days, I was using only wifi, as one of my number does not has Web pack on it, and I notice a horrible battery performance on the device and I am
Later on, I activied my internet on phone and here comes my theory.
I notice the Wifi is always running for some reason on the background even if I set it as turn of when screen off, when I check the battery usage, it shows almost every second that wifi is on. That should not be right, it should turn it self off when screen off, and it is not doing that.
Second of all, later on, I noticed something like *WIFI* shows under battery usage, and I was thinking what the heck is that, cause there is another "WIFI" still showing, and also something called" .com.motorola.contact. something like that is waking the phone and using the wifi as well.
And there also something like"motorola.home" running and using wifi for ages. Very strange.
OK, then I went out today, yes, I most of the time stay @ home, na I am joking..
I am mostly in a place with WIFI, home, work place, and Uni. All wifi here and there. Today, I took train 3 hrs total out and back from Birmingham to London for those who like stories. it was 1:30 afternoon battery @ 80% then I listen to music for 1 hr and use whatsapp quite a bit(battery hunger app even on iOS)
On the way back I played GTA 3 for one good hour. and it is now 9PM, and 15% left, as later on I tweet a bit, web a bit. which is good, also I took underground so signal is not always there.
After all these my question is for those who had the battery drain, are U in a wifi enviornment quite a bit time and use wifi?
If so, set the wifi sleep policy to Never(this actually will help) and while not using wifi to use heavy data stuff, turn it OFF and see what happen.
Also turn off GPS espically if you have facebook on phone and also the using wirelsess connection for location, turn that off as well.
BTW the GPS on Razr is reallllllly fast on location, it took 5 second to find me from cold boot. Awesome.
And I don't use task killer or smart action, I think using sensor and active these sensor to save battery while they are using a lot juice is not so smart.
BTW: due to I am on and off subway, my iPhone4s dropped a good 15% without any use, it just sitting in my pocket. (as for now, Android is the fun bit, iOS is the backup, as it does hold battery better a bit...lol)
I am on 2.3.6 (651.167.19.XT910.retail.en.EU)
I flash the rom couple of times, it all shows me WIFI is doing some strange thing.
Today still draining and I use a data usage checker and find that moto blur is using a hug a mount of data, WTF!?
I find battery performance vastly better on wifi than 3G. Mine has had atrociously bad battery life recently, so I'm backtracking through stock ROMs to see if I can replicate the setup I got 5+ hours of screen-on time with.
Gotta love those updates. The sooner data works properly in custom ICS ROMs for the XT912, the better.
Sent from my Transformer TF101 using XDA Premium HD app
before a week i got v3c with version want to extend battery does any one know if it comes with door ??
give us a link have a look? I am looking for the Maxx to replace on my normal razr
Sent from my XT910 using XDA App
I've been using SetCPU to create profiles on the ondemand governor and extrapolating from my general usage during commute, news/texts/im, fair amount of screen on time, I'm getting around 10% drain per hour which is fairly nice. With screen off and 3g running leaving the phone to idle, it drops to around 3-4% per hour which is significantly better from what I was getting right out of the box.
Battery test for Motorola RAZR XT910
Yesterday I decided to do a simple test with my new smartphone, a Motorola RAZR, I shall not charge until he get just 15% of battery remaining. So here I will put the results and thoughts about it.
8:00 AM: I woke up and took XT910 off the charger. Wi-fi was turned on;
8:00 - 9:00 AM: I passed one hour using Pulse to read some news, once or twice I shared some news in the Twitter and Facebook, with the Wi-fi on, of course. The Battery got 85%;
9:00 - 10:00 AM: I started to use Whatsapp to chat with a buddy, took at least 45 minutes of intensive use, battery got 70%;
10:00 - 11:00 AM: Cellphone in stand-by, BUT with the wi-fi on, waiting for someone, battery got 60% yet!;
11:00 - 12:00 AM: That one appeared, so I used Whatsapp again for 30 minutes, and battery got 50%;
12:00 AM - 2:00 PM: Two hours with the cells blocked, but still with wireless connection, 40%;
2:00 PM – 4:00 PM: Motorola in stand-by, now with the wi-fi turned off, so, in the first hour, he keep 40% and in the second, he got 30%;
4:00 PM – 5:15 PM: The final test, I passed just one hour playing Ceramic Destroyer without stopping, the battery got 15% and then the phone asked for charging!;
Well, the battery last for 8 hours with wi-fi turned on almost all time, so I think it's was fair, BUT, the battery status is a bit fake, I don't think that the information was correct, but, it works when is a simple test, you know, right?
We all know about the 1,2 Ghz processor, this drains a lot of battery, but the real villain is the connection, wi-fi or 3G, they both spend so much energy of the cel.
My last thought is... always charge your phone when it's possible, even if you don't use in an intensive form, I hope that you'll not have problems because a low-batterys cell phone.
One thing I've found is that when my battery is draining like a tub it's has nothing to do with any data connection. In running apps there's a media process that keeps my phone running at full bore. If I just kill that I get dramatically better battery life. Normally when I don't have to deal with that I can last all day with a quick touch up charge during the middle of the day. This on my xt912.
Sent from my DROID RAZR using XDA App
keeb119 said:
One thing I've found is that when my battery is draining like a tub it's has nothing to do with any data connection. In running apps there's a media process that keeps my phone running at full bore. If I just kill that I get dramatically better battery life. Normally when I don't have to deal with that I can last all day with a quick touch up charge during the middle of the day. This on my xt912.
Sent from my DROID RAZR using XDA App
Click to expand...
Click to collapse
your right, certain apps can affect battery life so it is ok to kill running task. however just want to make sure other users know that using task killer to constantly kill many apps is not a good idea! most of the apps will prob restart and this cycle will only drain your battery more. whatsapp is a good example, even they state on their homepage you should remove from task killing as battery would drain not just from the constant restart of the app but also the fact that it would continue to regain connection to their server whenever it restarts.
try use a dark colour like black as you know white colour drains much more battery. if your a constant user of google (maybe even if its your homepage too) try use the black google version. save some battery.
i think personally for me 3g uses more battery than wifi. another factor is the network bars that drains battery if low as constantly hanging onto that low connection.
you should try flight mode and see how the battery fairs there so you can get a rough idea.
also come across an app called FreshNetwork which is a signal booster & finder. Android Market - 4.7 out of 5 Star overall rating! (9,152) as i speak, and it does work.. theres been times where ive had 1 bar connections but after using it i get like 3/4bars. so it helps ease the battery drain there as connection is much better.
hope its of some help guys!!
I know theres is some apps that drains battery, one tip is just deactive the auto-sync with your accounts, other thing, I want a batterystatus app, to know better that stuff.
And I will try this connection app, thanks
Sent from my XT910 using XDA
Man I even turned off my smart actions, so far I only turn on things when I am really using them. Auto-sync only with wifi!
Mobzter said:
your right, certain apps can affect battery life so it is ok to kill running task. however just want to make sure other users know that using task killer to constantly kill many apps is not a good idea! most of the apps will prob restart and this cycle will only drain your battery more. whatsapp is a good example, even they state on their homepage you should remove from task killing as battery would drain not just from the constant restart of the app but also the fact that it would continue to regain connection to their server whenever it restarts.
try use a dark colour like black as you know white colour drains much more battery. if your a constant user of google (maybe even if its your homepage too) try use the black google version. save some battery.
i think personally for me 3g uses more battery than wifi. another factor is the network bars that drains battery if low as constantly hanging onto that low connection.
you should try flight mode and see how the battery fairs there so you can get a rough idea.
also come across an app called FreshNetwork which is a signal booster & finder. Android Market - 4.7 out of 5 Star overall rating! (9,152) as i speak, and it does work.. theres been times where ive had 1 bar connections but after using it i get like 3/4bars. so it helps ease the battery drain there as connection is much better.
hope its of some help guys!!
Click to expand...
Click to collapse
Its something stock with the phone. I just got a second and it still does it. I haven't figured out what starts it. But once I kill it, like I said my battery life is fantastic.
Sent from my DROID RAZR using XDA
keeb119 said:
Its something stock with the phone. I just got a second and it still does it. I haven't figured out what starts it. But once I kill it, like I said my battery life is fantastic.
Sent from my DROID RAZR using XDA
Click to expand...
Click to collapse
what did you kill?
there are some very important factors of battery draining follow
Display Timeout,Display Brightness,Bluetooth Inactivity
I've complied a list of battery saving tips and put them on my blog! Please do have a look!
The link to my blog is in my signature!
Aashrey99 said:
I've complied a list of battery saving tips and put them on my blog! Please do have a look!
The link to my blog is in my signature!
Click to expand...
Click to collapse
hey first of all nice site secondly your tips are pretty much on the dot.. just thought of these apps people might find useful
autostarts - helps with disabling apps from auto starting when phone boots up (may be slightly speed up boot?) & also prevent certain app event triggers (maybe an app permission u aint happy with?)
FreshNetwork - helps locate better signals in which in return would improve battery life
royalbloodvi said:
what did you kill?
Click to expand...
Click to collapse
In running processes, the vague media process. Auto starts and kills battery quickly.
Sent from my DROID RAZR using XDA
Mobzter said:
hey first of all nice site secondly your tips are pretty much on the dot.. just thought of these apps people might find useful
autostarts - helps with disabling apps from auto starting when phone boots up (may be slightly speed up boot?) & also prevent certain app event triggers (maybe an app permission u aint happy with?)
FreshNetwork - helps locate better signals in which in return would improve battery life
Click to expand...
Click to collapse
Thanks for the suggestions! I have added them to the list of battery tweaks!
Sent from my XT910!
Can anyone with an HTC one tell me about how the battery life is on yours and what helps make it go longer? Because I would call the battery on mine awful.
I would recommend that you install an application from the Play Store called "BetterBatteryStats". This will enable you to closely check what application uses the most battery, how long your phone is in deep sleep for and much more.
Charge the phone fully and after about a day, or until it almost dies, export a text file using the share button and upload it onto here and we can have a look at what is using your battery.
Just out of curiosity, how long does your battery usually last? Mine lasts 2 days on light usage and 1 day on heavy usage.
It's awesome. I'm running arhd with greenify hibernating all my apps. I get like a day and a half of battery time.
Sent from my HTC One using xda premium
I'm seeing a significant burn on mine as well. My device gets to where you could cook on it. Bugguh gets hot!
Does this look typical?
Thank you gents
Getting great battery life on CM 10.1 and now GE ROM
Sent from my HTC One using Tapatalk 4 Beta
Vuitres said:
I'm seeing a significant burn on mine as well. My device gets to where you could cook on it. Bugguh gets hot!
Does this look typical?
Thank you gents
Click to expand...
Click to collapse
thats bad...it should not get hot like that...any device lol...even on standby, for a device to get unbearably hot is bad ... do you have a lot of chat apps and background apps running? like apps that require push data services and etc?
Nothing. I run a lean system. I close all apps and I'm using the stock messaging app with the stock keyboard. I've concluded it's just that this phone is a piece of ship board.
With respect...
Sent from my cat box
My guys are getting upwards of 30+ hrs and 3hrs screentime with 4.2.2....usage may vary....
You could put your phone in power saver mode. I haven't bothered with it much, but those who have say that it doesn't impact performance in any noticeable way. I tend to have 1-3 hours of screen on time, depending on the day. I've never had any issue getting that with this phone, at least not yet.
As someone else mentioned, it does get quite warm to the touch, however. Never to the point where it's uncomfortable to hold, but enough so that it bothers me. I think it's just because in the back of my mind I know that, in general, electronics getting hot = bad. Yesterday my One got warm in the car while I was using GPS to navigate with it and the sun was just pounding the interior of my car. So I held my One up to the vent and blasted it with the air conditioner from time to time (i.e. not while driving, so spare me the lecture). Seemed to cool it off pretty well
Perfect rom
I have been using the RayGlobe Rom 6.0 and the battery is more than adequate for me and runs cold. Lots of mods and themes also. Might give it a try.
ATT HTC One
unlocked
S-OFF
1.54 boot
My battery usage just before I connected to charger , I'm a heavy user browsing and texting , social networks
Sent from my HTC One
With stock sense, my battery was pretty bad, to the point where I was pretty worried about having to get a different phone as it wouldn't last a day. But I put CM 10.1 on here last night, and it has been pretty amazing today.
I actually just picked my One up this last week and have been running battery tests with moderate use throughout the day and it can easily last 20+ hours (I didn't have time to let it go for a full 24). Maybe i'll do some heavy use tests and see how it goes.
I too am having battery issues... One day the battery last forever, the next day it drains quickly. I recently installed cpuz to see the max speed of the cpu when power saver mode was on. The max speed I observed was 1134 ghz, however I again checked the cpu speed after I rebooted my phone (with power saver still enabled) and cpuz now was indicating the cpu was running at full speed 1728 ghz. I turned off power saver and then re enable power saver mode and then cpuz showed the cpu to be throttled again at 1134 ghz. It appears (at least on my phone) that power saver mode does not automatically start after a reboot even though the powersaving mode was left on prior to reboot and the the phone shows the power saving symbol as active after reboot. Would someone test this scenario on there phone to verify the problem exist on other phones?
I converted the AT&T HTC One to full Google Edition and my battery life is solid. After 10 hours of usuage (BT on & connected, Wifi on & connected, Exchange email on push, 2h of screen on time, 2h talk time ...) I get to about 20-30% left of battery.
Good enough for what I need compared to my retired GS2