Database Info

Battery Performance Experiment: Two ROMs vs. Stock

So, I recently cancelled AT&T but I wanted to make a couple of last remarks on a battery issue, so as to (hopefully) better inform the devs. Up front, I will say that the reception at my house is terrible (hence my cancellation). As such, I expect somewhat poor battery performance. I have run nearly every version of Cognition, tried the AOSP project, and most recently run Perception. After using these, I was left with the impression that the battery performance in all of these has been disappointing.
Having received my new phone and with my old service not yet deactivated completely, I decided to try a more formal test. I used the following test protocols in order to ensure a fair and accurate comparison was conducted:
1) The phone was positioned for the worst possible reception in my house. It was only moved to change ROMs and was returned to the approximate location it was previously in.
2) Each ROM was flashed at 100% battery, with SIM and SD Cards removed.
3) A battery recalibration was performed after each flash, as detailed in the Cognition thread (Charge to full, turn off, charge to full, turn on, use for 2 minutes, charge to full, delete battery stats). Following this I did one more complete discharge and recharge to ensure the statistics would reconfigure with the calibrated battery.
4) GPS and Bluetooth were turned off; WiFi remained on and connected through all test runs.
I loaded Cognition version 2.3b6 and then Perception build 3, both of which performed approximately the same. Leaving my phone on standby and with only very light use (0 answered calls and no internet surfing or messaging), I could get no more than 15 hours of battery power before it died. Following this, I restored my phone to the stock JH7 update and, as of now, my phone is at 54% after 2d 19h 25m of use.
I know many people have been flamed for daring to suggest that the ROM has something to do with the battery draining abnormally, but I did this test as objectively as I could so that the community of developers can use the information to improve on this issue. In my opinion, this test suggests that something in the custom ROMs is causing an excessive battery drain. While this may not be happening on everyone's phones, it is most definitely happening on two of my Captivates. Hope this helps and good luck! I am off to Droid X Land! Suppose I'll use my working GPS to get there! (Sorry, couldn't resist... too soon?)
Edited for grammar and clarity

Poor signal is the biggest battery drain. Especially in 3g areas. I have had phones on VZW and ATT (different times and locations) where my battery would not last 8 hours.
Another test to show it is not the ROM or OS is to put the phone in airplane mode and observe almost 0% battery drain overnight.
But since these custom ROMs are built off beta releases, I am not surprised by your results.
Sent from my MB520 using XDA App

I noticed the same thing a while ago and am just hoping there is some issues with the fact that these roms are being developed on leaked builds without the source code.
The key thing to notice in the attached screen shot is the near constant 1-3% cpu activity when the phone is not being used. On JH7 I could leave my phone on over night and only lose ~3% battery. Currently on Perception build 4 I lose ~20-25% overnight. On Cognition 2.3b3 I lost about the same.

I get about 16 hours on my captivate with light to moderate use on the froyo leak.
on Perception and Cog (latest builds) I was getting about 9-10 hours with very light use.
I need another battery

skippyg said:
I get about 16 hours on my captivate with light to moderate use on the froyo leak.
on Perception and Cog (latest builds) I was getting about 9-10 hours with very light use.
I need another battery
Click to expand...
Click to collapse
I doubt the battery is your problem. As my test suggests, I am pretty confident that if you were to restore to stock, you would find your battery risen from the dead.

I can vouch for the OP about battery life. Battery life on JH7 is WAAAAYY better than any custom 2.2 ROM. I am running stock JH7 with Atimns v1.10 Voodoo kernel. Beats the pants off of the Cognition 2.3b6 ROM I was using battery-wise. In my experience, all of the Froyo based ROMs have battery issues. :-(

I just searched up a little bit more and found that the sensor is using a lot of juice because of a bug in the picture gallery app included in all froyo roms/leaks. I checked my sensor use and sure enough it was at 6 hours non stop. uninstalled using root explorer installed the Gallery3D.apk found on this site and now the use is at 2 seconds. I hope this was the cause. Also, is the android system supposed to be using so much of the sensor? My phone has been on for 11 minutes (reboot) and the battery history in *#*#4696#*#* says its been on for exactly the same amount of time...
sorry for the thread jack!

skippyg said:
I just searched up a little bit more and found that the sensor is using a lot of juice because of a bug in the picture gallery app included in all froyo roms/leaks. I checked my sensor use and sure enough it was at 6 hours non stop. uninstalled using root explorer installed the Gallery3D.apk found on this site and now the use is at 2 seconds. I hope this was the cause. Also, is the android system supposed to be using so much of the sensor? My phone has been on for 11 minutes (reboot) and the battery history in *#*#4696#*#* says its been on for exactly the same amount of time...
sorry for the thread jack!
Click to expand...
Click to collapse
The issue with the gallery using the sensor has been known for some time. If you our the rom dev did not change out the apk, you should.

Well I changed it and my battery has been going great! Heavy use with 5% decrease per hour since I replaced it.
Sent from my SAMSUNG-SGH-I897 using XDA App

To be fair...the custom ROMs I have tried each had WiFi set to always on. The stock ROMS from had is set to only be on when the screen was on. Depending on the availability of a WiFi AP, this can make a huge difference. Looking for a WiFi AP to connect to is costly.

jswclw said:
To be fair...the custom ROMs I have tried each had WiFi set to always on. The stock ROMS from had is set to only be on when the screen was on. Depending on the availability of a WiFi AP, this can make a huge difference. Looking for a WiFi AP to connect to is costly.
Click to expand...
Click to collapse
In my case, this was not the difference for me. I always had my WiFi always on, even with the screen off. I turned it off manually if I know I am going to be some where WiFi is not available. The battery drain is definitely somewhere else....but these are leaked Froyo ROMs for a reason.

emuneee said:
In my case, this was not the difference for me. I always had my WiFi always on, even with the screen off. I turned it off manually if I know I am going to be some where WiFi is not available. The battery drain is definitely somewhere else....but these are leaked Froyo ROMs for a reason.
Click to expand...
Click to collapse
do you know how to switch a rom from always on to only being on when the screen is on? i'm running a custom rom and i'm not seeing this setting anywhere aside from completely toggling wifi

domin8 said:
do you know how to switch a rom from always on to only being on when the screen is on? i'm running a custom rom and i'm not seeing this setting anywhere aside from completely toggling wifi
Click to expand...
Click to collapse
Wifi settings> menu > advanced
Sent from my Captivate

curti.nogg said:
Wifi settings> menu > advanced
Sent from my Captivate
Click to expand...
Click to collapse
whoa, cant believe i never saw that menu before. so setting it to 'when screen is off' will give better battery life?

domin8 said:
whoa, cant believe i never saw that menu before. so setting it to 'when screen is off' will give better battery life?
Click to expand...
Click to collapse
It depends. If there is a lot of data transfers going on and WiFi is off with the screen, these transfers will take place over 3G, which in more cases is not as power efficient as WiFi, all else being equal.
I'd say, WiFi always on is better, in my experience anyway. Mileage may vary.

emuneee said:
It depends. If there is a lot of data transfers going on and WiFi is off with the screen, these transfers will take place over 3G, which in more cases is not as power efficient as WiFi, all else being equal.
I'd say, WiFi always on is better, in my experience anyway. Mileage may vary.
Click to expand...
Click to collapse
For me personally I get terrible battery life when wifi is on. Everyone on here seems to say that leaving wifi on saves battery but this has never been the case with any device I've ever owned . And I'm talking about when I'm sitting home in an area with good wifi reception too.

I can't figure my battery out at all. On the weekends if I stay home and keep wifi on my battery will be on for 20 hours and still have 65% left. Once I leave home and I'm using 3G I can only get about 5 hours. I've lost 20% or more per hour without even touching my phone.
Another weird thing is under battery usage and "cell standby", it always shows time without signal at 50%. Never more and never less, always 50% exactly. Any ideas?

tietherope said:
Another weird thing is under battery usage and "cell standby", it always shows time without signal at 50%. Never more and never less, always 50% exactly. Any ideas?
Click to expand...
Click to collapse
Wish I had the answer for this too. Mine says the same exact thing. Always 50% yet I always have signal where I am. I'm hoping it's some sort of miscalculation and not a major bug where network connections are being dropped constantly and not being shown.

I get three+ days with my phone...
Sent using smoke signals.

Man, I thought I was in my own boat. Same exact symptoms across Cognition, Perception, Axura, you name it. Something weird though is that the first day is always great on battery, then after a night's charge it goes back to the 12 hr max per day (moderate usage). On stock it definitely lasts a lot longer. can't wait for an official froyo release... especially now that I have to use Good Messaging, another huge battery hog.

[Q] Battery loss 25% over night (8 hours), normal?

I disconnected my phone from power when it was at 100% before going to sleep. This morning 74% of power was left (after 8 hours).
"Cell standby" ate 40% and "phone idle" 35%. I'm in 5 bar coverage area. Is it normal?

artisticcheese said:
I disconnected my phone from power when it was at 100% before going to sleep. This morning 74% of power was left (after 8 hours).
"Cell standby" ate 40% and "phone idle" 35%. I'm in 5 bar coverage area. Is it normal?
Click to expand...
Click to collapse
i dont think so. i use almost no battery overnight unplugged with not so good coverage. im running stock atm.

I also use about 35% overnight. I started to systematically uninstall recent apps with no change so far. About 5% drain/hour. Weird stuff but also intolerable

fldude99 said:
I also use about 35% overnight. I started to systematically uninstall recent apps with no change so far. About 5% drain/hour. Weird stuff but also intolerable
Click to expand...
Click to collapse
What is top battery consumers for you?

Display is at like 36% when I get up in the morning, even though the phone has been idle all night. Then android system is like 25%

fldude99 said:
Display is at like 36% when I get up in the morning, even though the phone has been idle all night. Then android system is like 25%
Click to expand...
Click to collapse
Probably different issue then mine. You probably have some reminders or someting lighting up screen or something at night.

artisticcheese said:
I disconnected my phone from power when it was at 100% before going to sleep. This morning 74% of power was left (after 8 hours).
"Cell standby" ate 40% and "phone idle" 35%. I'm in 5 bar coverage area. Is it normal?
Click to expand...
Click to collapse
More info needed...Stock..rooted & custom rom?
Mac

Mac11700 said:
More info needed...Stock..rooted & custom rom?
Mac
Click to expand...
Click to collapse
Stock, rooted.

artisticcheese said:
I disconnected my phone from power when it was at 100% before going to sleep. This morning 74% of power was left (after 8 hours).
"Cell standby" ate 40% and "phone idle" 35%. I'm in 5 bar coverage area. Is it normal?
Click to expand...
Click to collapse
Did you recently perform a flash (to a new ROM, a different one, or flashed back to stock JF6)? If you did, you'll need to condition the battery.
If not, you probably have some background apps that run all night.
EDIT: Ooops, nevermind.

RexEscape said:
Did you recently perform a flash (to a new ROM, a different one, or flashed back to stock JF6)? If you did, you'll need to condition the battery. If not, you probably have some background apps that run all night.
Click to expand...
Click to collapse
I did not recently flash anything. I do have a bunch of background apps but if they were consumers they would show on a list, is not it. It would not be "phone idle" and "cell standby".

I'm in a similar boat. Ill drop around 20% within two hours. Display time is less than 30 minutes. Display down low. email fetching off. Running cognition 2.3 Tom
I've got a new battery on the way from att warranty.
Is it worth trying cpuset and tweaking?
Hope your battery life improves. I hate the mid day charge

Any chance you have wifi on? When I was running stock I would only lose a few percent overnight with it off. With it on though I would lose 20%+ easily.

Wifi uses battery more than 3G? In any event, without hijacking the OP's thread-I turned off wifi and it still uses about 5%/hour sitting idle with the screen off and locked.
However, what I did this morning: When arriving at my office-all I did was turn off something called "animation" in the display settings. I have no idea what you miss with animations turned off, but in about 3 hours of sitting idle, wifi on, I've only lost 2%. Not sure if I'm onto the problem..but will let it go another couple hours to check..then I'll turn the animations on again to see if that does anything.

fldude99 said:
Wifi uses battery more than 3G? In any event, without hijacking the OP's thread-I turned off wifi and it still uses about 5%/hour sitting idle with the screen off and locked.
However, what I did this morning: When arriving at my office-all I did was turn off something called "animation" in the display settings. I have no idea what you miss with animations turned off, but in about 3 hours of sitting idle, wifi on, I've only lost 2%. Not sure if I'm onto the problem..but will let it go another couple hours to check..then I'll turn the animations on again to see if that does anything.
Click to expand...
Click to collapse
I actually enable WiFi during sleep instead of 3G since according to posts here WiFi is using less power then 3G.

Thats what I thought..so turning off wifi is obviously not going to help battery life if you have a 3G signal. I don't know..I'm just killing one app at time but its tedious. May just do a factory reset-ticks me off to see the battery drain on a device that's already hard on the dam battery to begin with

I have started using cpu tuner to underclock my cpu when im not using it. Doing wonders so far. I am at 40% and have been using my phone normally for 10 hours 36 minutes
Sent from my SAMSUNG-SGH-I897 using XDA App

Woo first post--
Turning all data connections off will vastly boost your battery life. Not just WiFi but also 3G. On the stock Captivate you can do it by dialing *#*#4636#*#* > Phone Information > (Hit Menu button) > More > Disable Data Connection. Also check for SYNCing, stuff like Facebook, Twitter and Google syncing takes up a lot of juice since it repeats so often. I turn mine off unless I know I need real-time updates on a given day. On top of that, just keeping background apps from drawing CPU (i.e. having task manager to kill the ones that you KNOW keep running even though they're in the background) will help. I got ~24-36hr out of a charge through these three practices.
The next step for me personally was rooting the phone and taking out all the AT&T bloatware. This stuff loves to run in the background for whatever reason and killing it every hour is not going to help your battery life. So I removed all of it and reached almost 48hr out of a charge (low usage).
Turning off animations just takes away the smooth transitions between screens. I believe the home screen launcher (TouchWiz for stock Captivate) is actually unaffected, you still get smooth scrolling between screens. I'm using Launcher Pro and unticking the animations box in the Android settings only took out the menu animations, my homescreens are still smooth and fluid. Just that hitting the menu button makes the menu display immediately, instead of softly/smoothly, and returning to home is also instantaneous. I don't miss the animations, I like my faster AND more efficient.
If you've got the guts to play with your phone and really void your warranty, flashing to Froyo (2.2) and then optimizing everything you can about its power consumption will up the battery life even more. Today I used the GPS for a road trip, listened to music, spent 2hr browsing the Internet, made several phone calls, used the phone as a flashlight for an hour (pure white on screen) and after 24hr off the plug I'm at 50% battery. This phone + Froyo really is no joke, I've spent a couple days' worth of hours tuning so far, but once it's set up it's really satisfying. I can easily wring out 3 days from this phone if I don't go crazy with it.
Edit: If I let the phone sit still for 8 hours I lose about 1-2%. Not bad at all.
Reading around it seems that wifi signal and cell signal quality also majorly affect battery life. So if you're in a good location, you could potentially get much more out of your phone than if you're in a place with bad signal.

My battery life improved dramatically going to
settings ====> wireless and network ====> wi-fi settings ====> options ====> advanced
and changing wi-fi sleep policy to never. My default setting (Rogers) was when screen turns off. Made a big difference. Don't know if the default is the same on AT&T.

idlewillkill said:
My battery life improved dramatically going to
settings ====> wireless and network ====> wi-fi settings ====> options ====> advanced
and changing wi-fi sleep policy to never. My default setting (Rogers) was when screen turns off. Made a big difference. Don't know if the default is the same on AT&T.
Click to expand...
Click to collapse
What do you mean? You battery life improved actually after enabling WiFi to be always on?

I think it's pretty funny how half of the forum swears they get better battery life with wifi on and the other half with it off.
I personally have never gotten better battery life with wifi on. I've ran stock, JH7, 3 versions of cognition, and now on Perception build 4 and this has never been the case for me. I've tried it out with access to different routers with varying amounts of signal and it still showed no signs of improvement.

[Q] Horrible battery life on infuse

Can someone please help me with my horrible battery life on my infuse? I cant make it a whole day on my phone. I don't play games on it at all during the day because I work. The only thing I do is make calls and text. I had 100% battery this morning at 6:00am and it is now 1:30pm and I am down to 12%. I am running the latest version of catyrom on my phone and it was supposed to increase the battery life. My phone is less than a year old (probably only 6 months old if that) so the battery on it should not be shot. Any help would be awesome!
THANKS!

bassman198721 said:
Can someone please help me with my horrible battery life on my infuse? I cant make it a whole day on my phone. I don't play games on it at all during the day because I work. The only thing I do is make calls and text. I had 100% battery this morning at 6:00am and it is now 1:30pm and I am down to 12%. I am running the latest version of catyrom on my phone and it was supposed to increase the battery life. My phone is less than a year old (probably only 6 months old if that) so the battery on it should not be shot. Any help would be awesome!
THANKS!
Click to expand...
Click to collapse
Should not be like that. All the uckl2 base ROM have very good battery life.
Try a reflash. I would go into cwm, wipe data, wrote cache, wipe dalvik, fix permission, go to mount, wipe system, data and cache. Re flash ...i would try Another uckl2 base ROM then go back to caty if battery seems better

Buy Juicedefender Ultimate, set it up whichever way works for you. I couldn't tell you about Catyrom and the JD AOSP helper compatibility.
Buy and set up SetCPU to downclock your CPU when your screen is off, and when your phone's charge goes under a certain amount. Change your governor to conservative, ondemand, or smartass. Those will help. You could try undervolting, but be wary of doing it too much.
Look at your battery useage history and work out your app issues from there.
A faster microSD card wouldn't hurt, class 4, 6, or 10 would be better than a class 2, if you're even using a microSD card. Faster read/write means less time reading/writing.
If you need even more power, you could always go to 2G networks if Catyrom allows you to use them. From my experience, it will interfere with speakers on other devices. I have ~8 pairs of speakers in my office, and the interference drives all my co-workers nuts.
And you could always carry a spare battery, which isn't the best of options, but it's a sure fire way to go on
Reduce the number of widgets you use, reduce the number of screens you have, remove redundancy in your apps, and turn off live wallpapers.
Turn off auto brightness, and set it down to lowest valuable that is useable, then bump it up just a bit more. Then set your timeout to something conservative such as 15 or 30seconds or 1 minute.

garbagedump481 said:
Buy Juicedefender Ultimate, set it up whichever way works for you. I couldn't tell you about Catyrom and the JD AOSP helper compatibility.
Buy and set up SetCPU to downclock your CPU when your screen is off, and when your phone's charge goes under a certain amount. Change your governor to conservative, ondemand, or smartass. Those will help. You could try undervolting, but be wary of doing it too much.
Look at your battery useage history and work out your app issues from there.
A faster microSD card wouldn't hurt, class 4, 6, or 10 would be better than a class 2, if you're even using a microSD card. Faster read/write means less time reading/writing.
If you need even more power, you could always go to 2G networks if Catyrom allows you to use them. From my experience, it will interfere with speakers on other devices. I have ~8 pairs of speakers in my office, and the interference drives all my co-workers nuts.
And you could always carry a spare battery, which isn't the best of options, but it's a sure fire way to go on
Reduce the number of widgets you use, reduce the number of screens you have, remove redundancy in your apps, and turn off live wallpapers.
Turn off auto brightness, and set it down to lowest valuable that is useable, then bump it up just a bit more. Then set your timeout to something conservative such as 15 or 30seconds or 1 minute.
Click to expand...
Click to collapse
Thanks! I downloaded juicedefender and setcpu both. I had seen juicedefender in the market but was a little questionable about what it does. but I will see what and how good it does tomorrow. I have my phone charging right now so I will upload a pic of my battery life tomorrow around 3 so we can see how my phone is doing. When I looked at the battery usage when I plugged in my phone it was on for 7h 34m 24s on battery and when I plugged it in I had 6% battery. I really hope that this works. like I said all I do is text and call during the day.
Thanks again!

bassman198721 said:
Thanks! I downloaded juicedefender and setcpu both. I had seen juicedefender in the market but was a little questionable about what it does. but I will see what and how good it does tomorrow. I have my phone charging right now so I will upload a pic of my battery life tomorrow around 3 so we can see how my phone is doing. When I looked at the battery usage when I plugged in my phone it was on for 7h 34m 24s on battery and when I plugged it in I had 6% battery. I really hope that this works. like I said all I do is text and call during the day.
Thanks again!
Click to expand...
Click to collapse
JuiceDefender, to put it shortly, will kill your data connection/wifi/gps automatically and will enable them again on a schedule.
Those won't interfere with your texting or calling, but it will interfere slightly with your MMS. You'll have to wait for data to be re-enabled to download pictures/videos.
You can set up a schedule for work to be on a more frequent basis than the one when you're not at work, and once you set the battery threshold and the "ignore on low battery" function, it will stop all schedules once the battery reaches that point.
It will re-enable data/wifi when you turn your screen on so you can use it.
That's about most of what it does and it does work very well.
If you'd like, you can get cheap spare batteries from ebay. They mostly ship from China so they take up to a month to get to you, but they're very inexpensive. I just got my 2200 mAh battery (it fits just like the stock one) and it's not even broken in yet. It's 2 PM where I am and I unplugged my phone at ~8. I'm still above 65%. I don't tend to have very restricted battery use like some folks, but I do look for ways to reduce the battery waste. Most of my stuff works when the phone is in idle/deep sleep. I haven't done much of anything today with the exception of a very few calls and a few texts, a little surfing, and I downloaded a CM7 update from the CM7 port's thread.
When it's been broken in it should do better. CM7 isn't as battery friendly as some other ROMs but I like it very much so far. I have been furiously debating whether or not to move to Zeus ROM, as it seems like the big boy's Infuse ROM right now but I can't tuck away CM7 just yet
EDIT: Another, probably very minor, battery saver would be to download and install Adfree. It reroutes all outbound requests for advertisements to the device itself, so those don't download data and you don't see ads. Instead of them possibly keeping your scheduled data connection on for longer while they download (or pumping up your data useage), they never go outbound because they don't require internet access once checked against the HOSTS file.
Also don't forget to do what qkster advised. Bad flashes do happen, and you could have just had a bad flash.

Bassman--What does about phone say is eating the battery?
Sent from my SAMSUNG-SGH-I997 using XDA App

I have never gotten what I thought was decent battery life out of this phone... I work as a field tech so this phone is my office... Serendipity gave me the best battery life of any rom I've tried and I've tried several.
When I first got it I used Infused rom I would average 3 to 4 batteries a day. When I went GB roms that dropped drastically to 1-2... Serendipity would get me through the work day (8-10hrs) and home w/ a little to spare. Lately I have been bouncing back and forth between caty and zeus averaging 2+ batteries a day.
Might add I received my phone as a hand me down from someone at work. He only used it for a few weeks but kept it stock.

On any rooted ROM, i usually use tibu and delete buddy now, facebook, att, tether manager, devive update manager, etc..every possible background crap.
Every user is different, but with just calls and text, is not unusual for me to have 2-3 days before a charge.
Data sync and wifi off when not using data

Rxnelson the about phone says display. But that is the case on almost all phones. I have my auto off set to 1min
Sent from my SAMSUNG-SGH-I997 using XDA App

You can also try following basic methods:-
1. Turn Off: GPS, WiFi, Screen Rotation, Bluetooth, APN, Vibration, Animation etc.
2. Minimum Screen Brightness Settings
3. Minimum Screen Timeout setting.
4. Dont install Widgets based apps on home-screen
5. Kill the un-necessary background apps from Task Manager.
6. Use black theme in apps.
Thanks
Nits

Something I've found helps a lot is rebooting every morning. I'm running Zeus and noticed that the first day after a reboot I get great battery life (light- to medium-use would leave the battery at 50% after 12 hours). By the second or third day, I'd barely make it through the day. Since I've started rebooting every morning my battery life has been great. I also used BetterBatteryStats to help figure out which apps were keeping my phone awake. I learned that the Stocks app runs in the background waking the phone regardless of settings. Juice Defender is really a waste of time - you'll get better battery life by figuring out what's killing your battery and getting rid of it than having Juice Defender disable all of your phone's features when the screen is off(while using battery itself).

Man your battery life shouldn't be that bad. If it isn't a bad ROM flash then you could have a bad battery. Sometimes batteries die after a few months.
I did a lot of testing for apps and whatnot to try and see if I could maximize battery life. I tried all the juice defender and similar apps and didn't really like how they were killing off my services when the screen was off.
I found out that the main killers of my battery life were specific apps. When I used email apps with IMAP push services I noticed that they would kill my battery because they kept preventing my device from sleeping. I sometimes need about 18 hours in a day before I can charge so I really wanted to maxmize the battery as much as I could. I monitor new apps when I install them. Some seem sneaky so the battery stats might say that the app is only using something like 4% but it is also making the Android OS keep alive and use a higher percentage. I have about 70 apps installed but deleted most of the apps that seemed to kill my battery. In an 18 hour day now it is common for me to have at least 50% or more battery left over. It did take me a while to get this kind of battery life though. I was getting pretty frustrated for a while.
I'm running stock GB 2.3.3 (Rogers) and I am on the Bell network in the Great White North.

battery consumption when off

My tablet uses waaay to much power when its in standby or off. I use my note 10.1 intermittently, so this is frustrating. I cant help but notice that my daughters ipad can last a week on standby with virtually no consumption, but my note will die after a day a nd a half of doing nothing.
Ive already shut off wifi when in standby, anything else?

get rid of bloatware by rooting your device if you are up for it, bloatware is the main problem for battery drain, also use the power saver option in the settings and make sure the brightness is not on to high, my note last around 3 days on standby so there is something definitely draining your battery.

I'm not rooted and can still get about 3 full days if I'm not using it that much. You can just disable some of the bloatware, but rooting will allow you to remove all of it. If you go to -settings-application manager-all- it'll list all the apps on your phone. If you click on an app you can sometimes disable it. I, for instance disabled, "Google Music, as well as some of the samsung media apps" because I don't use them, but they were still using some of my mobile data.
I also use Juice defender ultimate to regulate wifi when the tab is sleeping. You can adjust how often the tablet will turn on the wifi to sync, then keep it off for the remainder of the time the screen it off. I also have it set to turn on wifi as soon as the screen turns on.
If you go to -settings-battery- you can see the percent that each app is consuming over any time period.
Also if you have a lot of widgets that need to constantly update that may also be part of the problem. While individual widgets are fine, when you have a lot it starts to add up.
You can also get "Wakelock" which tells you what apps are waking your tablet, and "watchdog task manager" to tell you if a particular app is out of control. These two apps will only tell you if a particular app(s) are contributing to the problem not fix it.
If the note is off, which I don't normally do, it'll last about 5-6days. There are a lot of other battery saving tips, but most of those are for when the screen is on.
It's funny, I always hear different things when comparing iWhatever to Androidwhatever, as far as battery life. I hear it both ways from people who have used both. I think with Android it's really dependent on what you have installed, where as with the iPad/iPhone it's more consistent.
One of the things I noticed with people switching for Apple to Android is that with Android you really need to install apps to get it work the way you want it to. With Apple it's ready to go out the the box, but you are forced to do it the way they feel is the correct way to do things. With Android you can get a more customized experience but you have to find the app that will do it through research, and trial and error.

Battery drain when off = hardware fault .
jje

hanexs said:
My tablet uses waaay to much power when its in standby or off. I use my note 10.1 intermittently, so this is frustrating. I cant help but notice that my daughters ipad can last a week on standby with virtually no consumption, but my note will die after a day a nd a half of doing nothing.
Ive already shut off wifi when in standby, anything else?
Click to expand...
Click to collapse
Not normal. Are uou running stock . Any strange stuff running in background. check in settings what is using your battery.

That's not normal at all. My tab has been on connected to wifi for over 3 days and is at 72% remaining. Root, install collective v6, then use better battery stats from the play store and monitor your applications. You probably have a few things like news apps auto refreshkng every 15 min or half hour. Make sure that all apps that have a sync option are set to like 6 hour intervals.
Not much Use over the past Couple days, just my game for a bit And some e-mail but this is what you should be at with light use and mainly stand by. I don't use juice Defender, Or any thing that turns off my wifi / GPs / Bluetooth. Power save is off because it disables the IR Remote app. Auto- Bright, and s-Pen is Always On because I have 3 of them SO I Dont always remove my pen.

HUYI said:
get rid of bloatware ... bloatware is the main problem for battery drain
Click to expand...
Click to collapse
Bollocks. So-called "Bloatware" almost certainly has NOTHING to do with this. Other than my kernel, I only run Stock ROMs and no apps I don't actively use ever show up on the battery stats.
Rooting, however, will allow you to run "Better Battery Stats", which will allow you to figure out what app is either preventing wakelocks from letting your device go into "Deep Sleep" mode, or waking it up enough that the drain is kiling your battery.
Also, depending on the AP you're running at home, the "beacons" it sends may be waking up the WiFi stack on your Note all the time- I had this problem with a D-Link AP once. (My custom kernels (search for 'em, once you decide to root) have minimized this problem, BTW.)
One other thing to consider if you have a 3G/LTE version is the radio- not only is it always drawing, but in low-signal areas it will positively murder your battery as it spends a lot of power telling the cell stations where it is.

hanexs said:
My tablet uses waaay to much power when its in standby or off. I use my note 10.1 intermittently, so this is frustrating. I cant help but notice that my daughters ipad can last a week on standby with virtually no consumption, but my note will die after a day a nd a half of doing nothing.
Ive already shut off wifi when in standby, anything else?
Click to expand...
Click to collapse
Reset, if still does it then take back or send for repair.
Mine is stock no root and full of,"bloatware". It will standby over a week or more, and runs on net probably 10 hours. No differnt rom is going to fix your problem.

Lolol my note sits there for weeks at a time on standby and when i pick it up weeks later, it still has 30-50% left...
Bloatware.. Or aliens.. Are causing your battery drain
Sent from my Nexus 4 using xda app-developers app

Marshmellow Upgrade | Awful Battery Life

Anyone else experiencing this? Atrocious battery life post upgrade. Nothing odd running in background, program or processes. Rebooted phone. Started the day at 100% with moderate usage at best, I'm already down to 19%.

Battery life is relatively unchanged in mine after the mm update. Easily make it through the entire day with 50-60% battery life remaining. I disabled a whole bunch of the bloatware (and will be removing it entirely when I decide to root my phone) and battery life is wonderful.

shaels said:
Anyone else experiencing this? Atrocious battery life post upgrade. Nothing odd running in background, program or processes. Rebooted phone. Started the day at 100% with moderate usage at best, I'm already down to 19%.
Click to expand...
Click to collapse
Mine has been fine, slightly better with doze/disabling packages. Do a back up through Smart Switch and try a factory reset. I do that every time I update.

I'm envious of your successes. I'll give it a bit to see if it stabilizes, if not I'll use SS and reset/restore.

shaels said:
I'm envious of your successes. I'll give it a bit to see if it stabilizes, if not I'll use SS and reset/restore.
Click to expand...
Click to collapse
I will recommend "Package Disabler Pro" to disable bloatware. Costs but is worth the cash.

Mine went through on Thursday and so far battery appears ok.
I have noticed however the lighting is messed up all over. Play books night light feature is broken and dims it to unrecognizable levels. I have to go into the settings again when in the book and disable auto lighting and manually raise it. When back at the list of books screen, the brightness drops to nearly off again.
Also it seems the notifications when listening to music are much louder. I could listen to mp3s via poweramp while reading a book and get an SMS text and itd be a light little sound. this is playing louder than my music and very annoying.

My batter life was horrible after the upgrade. Here's what I did to fix it.
1) Wifi sleep policy - Changed that to "While Charging" (big difference noticed after that)
2) Fully charged phone then let it run down to 0 (must let it power itself off)
3) Wifi Scanning has been moved under Location setting. Go to Location -> Improve accuracy, make sure Wi-Fi scanning is off.
Batter life is awesome now.

jasong127 said:
My batter life was horrible after the upgrade. Here's what I did to fix it.
1) Wifi sleep policy - Changed that to "While Charging" (big difference noticed after that)
2) Fully charged phone then let it run down to 0 (must let it power itself off)
3) Wifi Scanning has been moved under Location setting. Go to Location -> Improve accuracy, make sure Wi-Fi scanning is off.
Batter life is awesome now.
Click to expand...
Click to collapse
1: Apps/sync will use mobile data as priority if this is done while waiting to connect to wifi. In turn, using even more battery if an app/sync wakes the phone switching between networks.
2: This is damaging to Li batteries. To extend the life of your battery, it is better to keep it topped above 80% and cool(not very common in real world applications). These aren't Ni batteries, long gone are the days of "memory discharging".
If you don't need notifications at night, use airplane mode. I miss Xposed, Autotasker, and Amplify(formerly Bounce)... Greenify is a good alt atm
Note: Sometimes even Play service updates will introduce bugs and or "retarded" policies that will destroy the battery, especially the "Now" systems. It can happen at the most random times as well and not at all most. Every now and then the fat man will get stuck in the tube.

All thoughtful replies. I don't have Location on ever, unless I'm using Waze, so that's a non-issue for me. Allowing WiFi to sleep when the phone is off, while I'm only connecting via WiFi, effectively makes my smartphone a dumb phone, until I wake it up, right? The fact that I need to start changing around "normal" settings on my phone, to lesser benefiting ones, to get back to the battery life I had before I installed MM is pretty silly. I've been hoping things would settle down, but they don't. I can try using SmartSwitch later to see if that helps.
Steamer86 said:
1: Apps/sync will use mobile data as priority if this is done while waiting to connect to wifi. In turn, using even more battery if an app/sync wakes the phone switching between networks.
2: This is damaging to Li batteries. To extend the life of your battery, it is better to keep it topped above 80% and cool(not very common in real world applications). These aren't Ni batteries, long gone are the days of "memory discharging".
If you don't need notifications at night, use airplane mode. I miss Xposed, Autotasker, and Amplify(formerly Bounce)... Greenify is a good alt atm
Note: Sometimes even Play service updates will introduce bugs and or "retarded" policies that will destroy the battery, especially the "Now" systems. It can happen at the most random times as well and not at all most. Every now and then the fat man will get stuck in the tube.
Click to expand...
Click to collapse

No, it will connect LTE and then switch to wifi. LTE use more battery life, the network switch uses a bit, then finally you are into wifi. If your phone wakelocks or alarms(location ping, play service ping, etc) it will use more battery than wifi always on. Personally, I've tested both to make sure a wifi wakelock bug hasn't been introduced as I do with every update and play service update(it does happen and it's horrible drain). I see more savings always on.
If you meant you disable mobile network, yes, dumb phone, text and call. Also, I disable mobile usually always as I piggyback off work cell at work, and always wifi at home. I only toggle mobile data when necessary.

jasong127 said:
My batter life was horrible after the upgrade. Here's what I did to fix it.
1) Wifi sleep policy - Changed that to "While Charging" (big difference noticed after that)
2) Fully charged phone then let it run down to 0 (must let it power itself off)
3) Wifi Scanning has been moved under Location setting. Go to Location -> Improve accuracy, make sure Wi-Fi scanning is off.
Batter life is awesome now.
Click to expand...
Click to collapse
I believe this is what most people encounter. Most dont have unlimited data and use WIFI always. I think by default, WIFI is set to always on, even when phone screen is off. WIFI will rape your battery. I did my own tests with wifi vs 4g and just by using my 4g all the time, battery quadrupled. Many argued that WIFI uses less battery, and i have the best of the best wifi router/modem/isp with 5ghz ac excellent coverage. Not the case for me. I have unlimited and just stick with that now. Battery life on MM has been great for me.

My battery life is 4x better. I couldn't be happier.

shaels said:
Anyone else experiencing this? Atrocious battery life post upgrade. Nothing odd running in background, program or processes. Rebooted phone. Started the day at 100% with moderate usage at best, I'm already down to 19%.
Click to expand...
Click to collapse
Been on MM for about five days now and my battery blows, so much worse than what it was!

musicfreak190 said:
My battery life is 4x better. I couldn't be happier.
Click to expand...
Click to collapse
Mine is exactly 4 times worse

Battery the same.
But I have to tap the screen harder to chose app.
Going to factory reset and start clean, been a while.
Sent from my Nexus 7 using XDA-Developers mobile app

Has Verizon released any new updates to patch the issues with Marsh Mellow update

utsc said:
Has Verizon released any new updates to patch the issues with Marsh Mellow update
Click to expand...
Click to collapse
Not that I know of.
Though they JUST released Marshmallow. Verizon is probably still patting themselves on the back even though they released several months late. What I'm waiting for is a miraculous root.

I never use my phone the same amount every day, so it's hard to say exactly what kind of battery life I get, but I have noticed that it has improved. I would usually be near 15% by 10pm after coming off charger at 6am. Now I float around 25% at 10pm. So it seems to be better, even if only slightly so.

I see a minimal improvement, but I was doing what I could without root prior to sleep unnecessary crap.

Weird, when thye MM updated happened, up until the last two days, I was getting much better battery life under MM. But the past few days my battery life has declined dramatically to the point that I am not getting through a day of minimal use. Screen only 2%, Android OS consuming 76%.
I just fiddled with settings (Changed Wifi sleep to While Charging; Turned off wifi scanning). I am going to also try a reboot to see if that helps. I swear it started just about the time I started looking at Nexus 6p replacements).
Update, rebooting, and removing a few more useless apps and battery life has returned.