Database Users

[Q] Juice Defender

I have heard good things about juice defender, but i have a basic question. It says it turns of data during times, or when certain apps are running, etc...
Now, is the data only internet connection? Or will it interfere with my ability to get texts as well, because that would be a deal break for me.

Data is only the internet. The only things that you'll be missing out on are e-mails, which will still come through based on your schedule set up and when you have your screen on.
Sent from my SPH-D700 using XDA App

Heard so much about this app, tried it and took me only a few hours to remove it. When screen is off, it kills data, so basically apps like K-9 Mail that push my IMAP-idle email accounts and poll other accounts are basically impotent.
Plus the interface is confusing with a myriad of settings and no real hold on what settings stick or what not to set. I understand the concept of the app but it's not for me. With stock rom and mediahub-DRM-whatever-process killed off manually, i get by a work day with 50% left over on the train/bus-ride home, more than enough to do stuff before i get home.

I dave been using juicedefender for 3 weeks and it has maximized my batt an overall of 1.4x. The interface is confusing for those that don't spend time and learn it....its granular.
Sent from my SPH-D700 using XDA App

U can set it to fcetch data on certain time intervals and u can get emails like that
Sent from my Epic 4G

I'm totally happy with it - I'm getting a rating of around 1.7x to 1.9x I know I can easily go a full day on one charge. The default setting of enabling data every 15 minutes is enough for me - I don't expect to get emails that are time sensitive to the point where a maximum of 15 minute delay would be detrimental. And I play with my phone a lot so I'm usually waking it up to respond to texts and it reenables data then anyway.
edit: I'm not using any battery tweaks or DRM disabling stuff. I'm stock except for rooting.

You guys and this juice defender. you use more battery with this because it is always running in the background. i get 45 hours without juice defender or a task killer. 1 day of battery pleasssseee i could get 2 if it was left in standby or more. no drm removed. root, cwm, galaxy rom and kernel di18 & blue minimalism

Oh well f me... If you're getting 45 hours that must mean I can get 45 hours because, you know, our geographic locations have the exact same coverage and we have the exact same phone usage patterns. Wow I feel like such an idiot. Thank you. Thank you for showing me that juice defender, instead of increasing my battery life by a good 6-8 hours, is actually killing it by 21 hours...
Sent from my SPH-D700 using XDA App

Actually I am second guessing it too. Sure it off for a few days...
Sent from my SPH-D700 using XDA App

guruleenyc said:
Actually I am second guessing it too. Sure it off for a few days...
Sent from my SPH-D700 using XDA App
Click to expand...
Click to collapse
That's fine - always be skeptical especially when an update comes out to improve performance. I'm about to test the new kernel without this to see if it's worth it. But I know that keeping data off on my Hero tripled the battery life and since having this phone it's definitely increased it. But you can't tell me that I'm losing 21 hours of battery life by using it - and definitely don't try to make me feel like an idiot for using it either.

shinma6980 said:
That's fine - always be skeptical especially when an update comes out to improve performance. I'm about to test the new kernel without this to see if it's worth it. But I know that keeping data off on my Hero tripled the battery life and since having this phone it's definitely increased it. But you can't tell me that I'm losing 21 hours of battery life by using it - and definitely don't try to make me feel like an idiot for using it either.
Click to expand...
Click to collapse
Im sure its not killing you by 21 hours. prolly your STOCK sync settings though. i only turn it on for a minute or two 3x a day. but go with out it i bet its prolly like 8 hours. think about it when your screen is off it is running. well that is another process that is draining battery unneccessarily. My entire phone is set up like on demand it does what i want it to when i want it to not when it wants too and all of this is acheived with stock settings and checking every app for update frequency settings. I use my phone a lot so i need it to be there.

jbadboy2007 said:
Im sure its not killing you by 21 hours. prolly your STOCK sync settings though. i only turn it on for a minute or two 3x a day. but go with out it i bet its prolly like 8 hours. think about it when your screen is off it is running. well that is another process that is draining battery unneccessarily. My entire phone is set up like on demand it does what i want it to when i want it to not when it wants too and all of this is acheived with stock settings and checking every app for update frequency settings. I use my phone a lot so i need it to be there.
Click to expand...
Click to collapse
So for argument's sake, and because I wanted an actual test, I installed your setup based on you're post earlier, andromeda rom, no juice, etc. gmail and facebook sync off. I even went in 4 times throughout the day to turn off running services. I got 11 hours and that was with charging while I was in a vehicle. So I would say about 9 to 10 hours really. TWS was only at 16%. Display was the biggest battery drain at 82%.
So now that I've done this, I can say without a doubt, for me personally, juice defender is really extending my battery life. While running juice defender, I take my phone off the charger at 6am typically and when I go to bed at midnight I still have over 20%. And if I don't plug my phone in, I can wake up at 6am the next day and the phone is still on.
You have a setup that works for you, and I have a setup that works for me. In my setup, juice defender gets me through a 24 hour period without charging. Now that I've got the andromeda rom and kernel, I'm going to test battery life with juice.
Sent from my SPH-D700 using XDA App

45 hours is meaningless when you just let the phone sit in standby the entire time. That's like the car commercials that list higher mpg than they get in the real world.
Sent from my SPH-D700 using XDA App

I have juice defender installed only for it's two toggle widgets. With defender disabled it doesn't run in background, I take advantage of the data toggle widget and I've seen it save as high as 5x's life.

My battery solution

I've had a very sudden and dramatic improvement in battery life and I thought that I'd post what seems to have worked for me.
I installed setCPU and set it for
768/254 on demand - main
245/245 performance screen off
368/368 performance - battery<41%
battery<101% 768/245 on demand
I installed Ultimate JuiceDefender and set it for extreme - blocking all connectivity except for a white-list
I decided that I could do a better job than the auto screen, so I installed Brightness level and I keep it generally at about 20% and then flick it up a bit if I need it.
I disabled auto rotation and now toggle the screen with a widget.
I've taken phone calls, recorded phone calls, checked email a few times, tweeted - very often using wifi which I operate using a toggle widget
I had the phone on charge all night switched off.
Disconnected it at 8.00 this morning and at 6.30 this evening, the JD widget tells me that there is still 12hrs and 28 mins of battery time left.
Considering the size of the screen and what this phone does. And considering the very poor battery life - 8hrs max I was getting before, I am far happier and the phone now becomes a practical item to have.

Whats your percentage battery left?

seems to be saying 72%
I also noticed that for the first time screen usage is less than running usage.
Screen consumption has always been the big factor on phone - and I see that is what people say on the forum, so I'm very pleased to have reduced it so well.
The Brightness level app allows a variable control whereas all the other screen controllers have seen allow you only to rotate through three or four preset brightness levels.
Brightness Level lets you do that with a widget but it also has a slide bar, which is what I was looking for

So basically you've downgraded the DHD to a level of a Nokia S40 device imo As this has been covered by many others in many other battery life related threads I'm just saying this short and simple. Just use the device as it is supposed to, enjoy the awesome features it provides at the full potential and don't get fixated on the battery life, it'll get you through the day no problem (doesn't include playing angry birds for three hours straight ) and just plug it in when you have the chance.

About battery, some tips, my battery life is around 2 days with normal usage of phone, only i dont use 3g only wi-fi:
Brightness - between 25% and 50%
When you on the internet and use native explorer for android go to "Menu-more-settings-enable plugins" and set it to "On demand"
Tupe *#*#4636*#*# - "Phone information" and set "Preffered network type" to "GSM Auto Prl"
Android Revolution HD 2.15 rom

lejars1 said:
I've had a very sudden and dramatic improvement in battery life and I thought that I'd post what seems to have worked for me.
I installed setCPU and set it for
768/254 on demand - main
245/245 performance screen off
368/368 performance - battery<41%
battery<101% 768/245 on demand
I installed Ultimate JuiceDefender and set it for extreme - blocking all connectivity except for a white-list
I decided that I could do a better job than the auto screen, so I installed Brightness level and I keep it generally at about 20% and then flick it up a bit if I need it.
I disabled auto rotation and now toggle the screen with a widget.
I've taken phone calls, recorded phone calls, checked email a few times, tweeted - very often using wifi which I operate using a toggle widget
I had the phone on charge all night switched off.
Disconnected it at 8.00 this morning and at 6.30 this evening, the JD widget tells me that there is still 12hrs and 28 mins of battery time left.
Considering the size of the screen and what this phone does. And considering the very poor battery life - 8hrs max I was getting before, I am far happier and the phone now becomes a practical item to have.
Click to expand...
Click to collapse
your on stock rom mate?
i can see that you can charge your phone while its turnd off..
i think on customized ROM like ARHD LD CORE cm7 and etc cannot charge their phone while its off because iT will BOOTup to recovery mode

Doesn't performance mode just keep the CPU clock on it's maximum? It would rather shorten the battery life than prolong it.

Why buy a smartphone and use it like a landline lol i hammer my phone and still get 10-14 hours out of it, thats fine for me, i only get 3hrs out of my laptop lol
Sent from my Desire HD using Tapatalk

Mate there is something eating your battery if u only get 8 hours battery life.
These adjustments you made are unnecessary if you find the culprit that is eating your battery, why get a phone like the dhd and run it on 20% brightness and lower the cpu to such a level.
Have you used spare parts to check your battery usage?
Im currently on 40% and my phone has been unplugged since 27 hours and I don't even have setcpu installed.
Maybe you should post details on your barret usage!
Swyped from my sexy galaxy tab

But I'm not compromising anything now. I'm completely happy with the way that the phone works for me now.
I'm actually operating the screen at 12% for most of the time - when I am not outside and it doesn't present any difficulty for me.
Obviously I would always like better battery life and I'll look for more ways to improve it.
Doesn't performance mode just keep the CPU clock on it's maximum? It would rather shorten the battery life than prolong it.
Click to expand...
Click to collapse
According to setCPU, if you set it to on demand, it will keep on scanning for required power level. Performance automatically goes to the max. Apparently on demand uses slightly more power so they advice to use performance when possible. So I set the same max/min figure and use a performance governor.

i would actually consider rooting the phone as an alternative, or getting a bigger battery. i have alot of issue with the battery life previously, but after switching rom, it actually help alot

Well it is rooted to enable JD and setcpu to work. But I haven't dared go further because I am still trying to understand the entire process - and also the way back!
I probably will eventually.
I've ordered a 1500 Mugen - and if that actually exists and if it is an improvement on the stock battery then that will advance things as well.
I'm very pleased with the improvement I have achieved so far because at least I'm able to take the thing off the tit for a full working day and use it as a real mobile phone!!

lampz said:
your on stock rom mate?
i can see that you can charge your phone while its turnd off..
i think on customized ROM like ARHD LD CORE cm7 and etc cannot charge their phone while its off because iT will BOOTup to recovery mode
Click to expand...
Click to collapse
this is only true if you're using CMW Recovery 3.x.x.x

redlinux said:
this is only true if you're using CMW Recovery 3.x.x.x
Click to expand...
Click to collapse
No, its on all versions of cwm, you can still charge your phone though, even in recovery
Sent from my Desire HD using Tapatalk

AndroHero said:
No, its on all versions of cwm, you can still charge your phone though, even in recovery
Sent from my Desire HD using Tapatalk
Click to expand...
Click to collapse
Yup2x, it's true that we can charge it very well while in recovery mode. I was referring to the situation wherein the printer reboots to recovery as soon as you plug in the charger to your DHD. Some users have reported that and they are all using 3.x.x.x.

lejars1 said:
So I set the same max/min figure and use a performance governor.
Click to expand...
Click to collapse
As far as I've understood, you will always have max frequency when performance is applied. So there is no use setting min value really as it doesn't matter.
Sent from my %s using XDA Premium App, pardon my typos.

Vispe85 said:
So basically you've downgraded the DHD to a level of a Nokia S40 device imo As this has been covered by many others in many other battery life related threads I'm just saying this short and simple. Just use the device as it is supposed to, enjoy the awesome features it provides at the full potential and don't get fixated on the battery life, it'll get you through the day no problem (doesn't include playing angry birds for three hours straight ) and just plug it in when you have the chance.
Click to expand...
Click to collapse
By far the most excellent advice. I totally agree with you.

horrific battery life...help?!

Hi All
Once again thanks for watching my video and getting me tickets to MWC...but alas i have another issue. My Note has horrific battery life....practically about 8 hours.
I downloaded better battery stats and there are no major wakelocks going on...(just juice defender at 3.4% which i uninstalled anyway) ....any other ideas?
Any help would be appreciated, another Mobiler suggested i put a custom rom on...I'm just terrified of 'bricking' my phone lol

This is perfectly average battery life for stock rom with moderate to heavy usage but if on light usage you might have some issues. Here is my battery like with heavy use.
Don't pay attention to people claiming Days of battery life they are simply not using the phone.
Sent from my GT-N7000 using xda premium

Battery life is certainly better than that on my old HTC Desire HD. Far better.
Sent from my GT-N7000 using XDA App

Staceymobiler said:
Hi All
Once again thanks for watching my video and getting me tickets to MWC...but alas i have another issue. My Note has horrific battery life....practically about 8 hours.
I downloaded better battery stats and there are no major wakelocks going on...(just juice defender at 3.4% which i uninstalled anyway) ....any other ideas?
Any help would be appreciated, another Mobiler suggested i put a custom rom on...I'm just terrified of 'bricking' my phone lol
Click to expand...
Click to collapse
Maybe you could post up your betterybatterystats results?

I was having the same problem. I have a lot of apps on my phone, and it was just draining while sleeping as far as I could see. My main issue was all the unwanted apps like the social and media hub popping up whenever they felt like chomping on my battery.
I finally gave in and rooted, and installed droidwall to prevent anything getting network access I do not allow, android assistant for its start up manager, and autorun to delete all 'event listeners' that cause apps to pop up when they like (and there are hundreds of these in the stock apps, I assure you).
I now have 50% more battery life, and it seems to lose a lot less while sleeping.
I installed the CPU speed set thingy (sorry, I forget the name) but I had the problem a few others seem to have because it drained the battery faster than ever while sleeping. I will try again after a few days. I screenshot the battery graph in full screen, showing the WiFi, wake & screen, every day so that I can get a good feel for historical usage and battery life.
I have an el cheapo battery (had two but lost one) for emergencies. I am buying a Samsung one instead (for a 'real' 2500 mAh), and expect to keep it on me at all times. That should take me through a day of pretty heavy usage. I also have some dangly 'add-on' chargers, but frankly a spare battery is neater, smaller and easier.
I have also bout a tablet (10.2" with 16GB) for $200. I fully expect to buy another - one for work and one for home. These will reduce my usage of the G-Note and leave it for actual use as a phone. The main problem is that I use it so damned much! I have my phone, contacts, all my To Do lists, email, audible books, textual books, surfing, games, etc all on one device. I also use it to type notes at meetings or the like using my folding BT keyboard. It does it all really well, but does not have the battery to cope!
I know there are fat batteries out there, but I do not want to spoil the beauty of my svelte Note by giving it a hunch-back!
---------- Post added at 10:42 PM ---------- Previous post was at 10:33 PM ----------
I also use Llama to control things like BT, WiFi and network data access when away from home or office. It does help, and means I don't have to remember to toggle. I tried Juice Defender as well, but its idea of turning on the WiFi at intervals saved my battery but seemed to make my email (IMAP) never download. I need to know when emails come in so that did not work for me. I may try it again at some point and try to make it work better for me.

Uninstall Juice Defender. I found my phone battery lasted twice longer after I removed it.
Sent from my GT-N7000 using Tapatalk

Hi staceymobiler
Root n install the charks rom... woth v3.3 kernel
I vet past one day on single charge n its freakin awsome......
Sent from my GT-N7000 using xda premium

I use my phone for note taking all day and into the evening! Screen and internet used for over 12 hours, constant use! (Screen on lowest setting)
After battery "settled" I get around 10 hours then pop in a second battery!
Took about 15 charging cycles though to get the 10 hours!
Anyway just saying it may take time! And a second battery is always safest
Sent from my GT-N7000 using XDA App

that's... actually pretty normal battery usage if you're using your phone a lot.
my note is operating pretty much 18hours a day. A full charge is all i need, and by the end of the day, i get the critical battery notification.
if your note lasted more than a day, that's great. But with the amount of workload i am expending using my note, i wouldn't be surprised if continued usage of the phone would only last 7 to 8 hours tops. or much less.
and besides, the note can last for more than 2 days, if you didn't use it at all.

thanks for all the suggestions...i'm going to give rooting it a go this evening. Will let you know how that goes.

awesome-member said:
This is perfectly average battery life for stock rom with moderate to heavy usage but if on light usage you might have some issues. Here is my battery like with heavy use.
Don't pay attention to people claiming Days of battery life they are simply not using the phone.
Sent from my GT-N7000 using xda premium
Click to expand...
Click to collapse
Yeap, that seems like average battery life. If you notice (others) that his screen on time was pretty solid most of the time. That means of the nearly 6 hours on, I'd say about 4.x hours the screen was on. So that's good

I have managed to improve my Galaxy note battery life a LOT by doing the following:
- Disable Wi-Fi when not using it.
- Settings > Accounts and Sync > UN-TICK "Auto-sync".
With auto-sync disabled you have to manually open the relevent app to get the data, but for me, thats what I prefer, and it saves loads of battery life.
Used to be 8 hours or less with the above 2 enabled.
now 16 hours+ with the above 2 disabled !

Installed free version of Juice Defender 3 days ago, didn't do anything just keeping it on balanced mod and from now on I have extended normal battery life (phone, e-mails, sms, occasional internet through 3G) from 1 day to 2 days. What can I say ...
It works. When you switch into wifi, gaming or intensive document editing then nothing is going to save you, but just for having the phone in your pocket and using it as a "phone" Juice Defender delivers.
I noticed on the market that roughly half people say it is excellent and the other half is whining that it just sucks. Give it a try a decide for yourself.

Just turn auto sync off and untick "Use wireless networks" and you will be blown away by the battery life.

The last two days my battery was losing power too quickly compared to my previous weeks with my note.
So I thought it must be an app which I installed which is causing this. The only app I installed recently was Google + so it took it off and hey presto - battery life back to normal again.
You might say well it doesn't drain my battery with google+ installed but it works with mine as I tried re-installing again and it sapped the battery again.
Maybe different apps effect different roms, kernals etc...just a thought and something you could try with a recently installed app.

Staceymobiler said:
thanks for all the suggestions...i'm going to give rooting it a go this evening. Will let you know how that goes.
Click to expand...
Click to collapse
Hur, hur!
(sorry, that has different connotations downunder....)
---------- Post added at 02:54 AM ---------- Previous post was at 02:43 AM ----------
nickpimenta said:
I have managed to improve my Galaxy note battery life a LOT by doing the following:
- Disable Wi-Fi when not using it.
- Settings > Accounts and Sync > UN-TICK "Auto-sync".
With auto-sync disabled you have to manually open the relevent app to get the data, but for me, thats what I prefer, and it saves loads of battery life.
Used to be 8 hours or less with the above 2 enabled.
now 16 hours+ with the above 2 disabled !
Click to expand...
Click to collapse
uncommonaman said:
Just turn auto sync off and untick "Use wireless networks" and you will be blown away by the battery life.
Click to expand...
Click to collapse
I can see that as an option, and I believe that all of those who report great battery life are doing much the same. My problem is that I want to be kept alerted to emails. I have tried Juice Defender, as it starts up wireless at defined intervals, but since my email is checking at other defined intervals, at appears that the email never gets through. I have to assume they never coincide.
I also like certain apps to sync, although I guess I could do that manually. Currently I turn on autosync while at home or work with Llama. Luckily the wireless and autosync toggles are in the notification dropdown as well - that is a wonderful idea.
I use the Note far too much, so (as I have probably said) I am getting a tablet. I hope that it will serve as my email notification when I am at home or work. When Llama knows I am at neither place, it can disable autosync and enable mobile data for me (which I keep off at home & work).
It is a delicate balance trying to get full desired operation and decent battery life. I am not sure it is really worth all the agro. I may just settle for a spare battery in my wallet and a dock/battery charger by my bedside. That is probably the easiest of all options! Then I can game away whenever I like without constantly checking the battery

Im using a custom rom rocket rom v21 with abyss kernel... which gives me a battery for 40 hours approx. With fair amount of usage. Sync off facebook app as it sucks a lot of battery too.
Sent from my GT-N7000 using xda premium

In wifi settings enable the option to turn wifi of if the screen is off. That adds a lot of battery time. I get far more than 8 hours and i use it all the time with wifi etc.
Sent from my superior GT-N7000 using Tapatalk

Zamboney said:
In wifi settings enable the option to turn wifi of if the screen is off. That adds a lot of battery time. I get far more than 8 hours and i use it all the time with wifi etc.
Sent from my superior GT-N7000 using Tapatalk
Click to expand...
Click to collapse
Awesome! Been looking for this feature for awhile now. Only downfall is just remembering to switch it back when i'm using Pandora

A bit off topic but I experienced a fluke on my battery life, was just watching simpsons while I had my wifi connected and only had my yahoo messenger connected probably a total of 10-15 messages in 4hrs range, for 4 hours of screen time it normally drains 50-51% only.
I almost always have the same scenario when I watch simpsons on my phone, yahoo messenger running but it the first time to drain it like this.

[CM9 beta] Battery Optimization Discussion

Battery Optimization Discussion Thread
CM9 beta: Android 4.0.3 for Samsung Epic 4G​
This thread is ONLY to discuss issues related to power management and battery life on CM9 on the Epic 4G. Battery tips are regularly summarized in the official Battery Optimization Guide. Please read the guide before posting to this thread.
CM9 Discussion Threads
User Support, Questions & Answers Thread
Battery Optimization Discussion Thread
Tips & Customization Discussion Thread
Development Discussion Thread

its good practice to save battery to turn refresh interval for apps that access the web for updates such as social media, new readers, etc to manual to help save battery life as most of these apps refresh on a pretty regular interval and defiantly eat up alot of battery

If you notice especially high battery drain and recently used your GPS or Camera they can occasionally stay on with no visible signs. Also please remember the battery stats is HIGHLY inaccurate. A Phone reboot usually fixes this.
Never keep apps like Skype, IRC, etc that stay running and keep your CPU on they drain battery especially fast!
One big battery saver is to not wake your phone to just check the time. Let the CPU stay in deep-sleep as long as possible to preserve power until you actually need your phone for something.
One MAJOR thing to save power is DO NOT MESS WITH CPU SETTINGS!
Do not use 3rd party apps like Voltage Control or SetCPU or even the built in Performance settings as modifying the settings will increase the minimum clock to 200MHz which will greatly reduce battery life than NOT messing with them. This is a known issue and will be addressed in a future release!

dyehya said:
One MAJOR thing to save power is DO NOT MESS WITH CPU SETTINGS!
Do not use 3rd party apps like Voltage Control or SetCPU or even the built in Performance settings as modifying the settings will increase the minimum clock to 200MHz which will greatly reduce battery life than NOT messing with them. This is a known issue and will be addressed in a future release!
Click to expand...
Click to collapse
If you DO decide to run a custom kernel, (NOT, I repeat NOT recommended or supported by CM9 devs) I'd suggest Control Freak. I ended up with a 200mhz min, and with that app managed to get deep sleep and 100mhz back. WITH uv and some minor oc. My battery life is great.
Head on over to the app thread here: http://forum.xda-developers.com/showthread.php?t=1072403
Another thing that can save battery, Screen Filter from the Market (Play Store now I guess) can dim our screens lower than the lowest stock increment. Useful for dark environments. (Movies, night outside etc.)
This should be obvious, and has been stated already, but it bears repeating: TURN OFF DATA AND ALL OTHER MODEMS if you're not using them.
Thanks to all the devs and everyone who contributes.

YES!!! It seems a little bit more snappy or is it just me?
And thanks for the advice not to run custom kernels...

Without a doubt, the biggest battery saver for me, is to turn off data until I want to use it.
I simply cannot believe the difference. Makes me think I'm gonna have to go out and get Juice Defender, and let it turn off data when I put the phone to sleep, it is just that dramatic.
I can call text, and play hours of games, and still have the battery have more juice remaining than it did over the same timeframe with just a call or two for usage with the data on.

tabormeister said:
Another thing that can save battery, Screen Filter from the Market (Play Store now I guess) can dim our screens lower than the lowest stock increment. Useful for dark environments. (Movies, night outside etc.)
Click to expand...
Click to collapse
Rather than installing an additional app to control brightness, why not just tweak the settings yourself?
System Settings / Display / Automatic Backlight
Check "Use custom" and set a lower Screen dim level. Use "Edit other levels..." to adjust the steps for auto brightness if you use that feature.
This is a fantastic feature if you use the phone in low light conditions.

DCRocks said:
Without a doubt, the biggest battery saver for me, is to turn off data until I want to use it.
I simply cannot believe the difference. Makes me think I'm gonna have to go out and get Juice Defender, and let it turn off data when I put the phone to sleep, it is just that dramatic.
I can call text, and play hours of games, and still have the battery have more juice remaining than it did over the same timeframe with just a call or two for usage with the data on.
Click to expand...
Click to collapse
This first and foremost for me.
I took my phone to a basketball game the other night and turned data off. From when I left work to when I got home was about 7 hours, and I didn't plug in for another few hours later and still had some juice. Compare this to last night when I went to class and had my phone in my pocket with 4g on for a few hours, I arrived home and my phone died 15 minutes later. Total time elapsed, 3 hours 46 minutes.
Particularly 4G data is offensive in it's battery consumption.
I have also found that putting the display on Auto Brightness saps my battery. I just adjust it whenever I need to, keeping it on the lowest setting most of the day since I'm inside a lot.

The mmc_delayed_work and deleted_wake_locks are driving me crazy. I know they've been reported as "false blames," but something, whether MMC or otherwise, definitely causes seemingly unnecessary wake locks, and there is a very clear pattern between high report percentage and battery drain.
I don't mean to take away from the optimizations suggested; they're definitely useful if you're looking to stretch the battery life out longer than typical stock capability. But for many of us, something wakes the phone a little too often, and it's very difficult to debug without disabling every single application and testing one at a time.
I guess the point is, has anyone else found a better way to figure out these wake locks?

Why is awake time in Android OS always more than double the display on time? That sounds like serious wake locks. What can I do to reduce that?
Sent from my SPH-D700 using xda premium

Don't overlook the AudioOut_1 wakelock. Its my number one offender at the moment.
Minimize it by turning off screen selection sounds... System Settings / Sound / Touch sounds.
We need to figure out what the problem is with that.
On the good side, my mmc and deleted wake locks are negligible so far on beta.

Liner81 said:
Don't overlook the AudioOut_1 wakelock. Its my number one offender at the moment.
Minimize it by turning off screen selection sounds... System Settings / Sound / Touch sounds.
We need to figure out what the problem is with that.
On the good side, my mmc and deleted wake locks are negligible so far on beta.
Click to expand...
Click to collapse
Same for me. Think due to notification sounds mostly.

muyoso said:
Same for me. Think due to notification sounds mostly.
Click to expand...
Click to collapse
That's probably right. The only time I ever see that is playing music without headphones. I almost always have my phone on vibrate
Sent from my SPH-D700 using xda premium

I get 39 minutes for vbus_present in the 6 hours since unplugged.
Sent from my SPH-D700 using xda premium

Just want to say THANK YOU for this thread, and THANK YOU for such am awesome rom.
If I might be so bold to suggest, put a section on your page for "If you get worse battery life on this rom than your last rom, it may not be because of a problem with this rom, it may just be that way and there may be nothing that can be done about it because that's just the way it is."
I have had no problems with battery life, fwiw.
Sent from my SPH-D700 using XDA

"Without a doubt, the biggest battery saver for me, is to turn off data until I want to use it."
Agreed... Right now 25%, 8 days 8 hours, 3 h 37 m awake, screen on 1 h 43 m

XXCoder said:
"Without a doubt, the biggest battery saver for me, is to turn off data until I want to use it."
Agreed... Right now 25%, 8 days 8 hours, 3 h 37 m awake, screen on 1 h 43 m
Click to expand...
Click to collapse
8 days? Airplane mode? Or is your battery over 9000....mah?
Sent from my SPH-D700 using xda premium

XXCoder said:
"Without a doubt, the biggest battery saver for me, is to turn off data until I want to use it."
Agreed... Right now 25%, 8 days 8 hours, 3 h 37 m awake, screen on 1 h 43 m
Click to expand...
Click to collapse
Pics or it didn't happen! And here's a battery tip. Don't install facebook or messenger. Ever.
Sent from my SPH-D700 using Tapatalk

Just spend a day with CM9 Beta 0. It's a great rom with lots of promise. Great feel and look, very fast, ICS is fantastic.
That said, the battery life is not there yet. I basically set it up the same way I set up the stock rom. Email on Exchange push notification, EVERYTHING ELSE on manual sync. On a stock rom I usually am at about 40% after 12 hours of moderate use. About 5% drop an hour. On this rom I was at 75% after 2 hours. About 12% an hour. This is with the "stock" 1800 mAh battery.
If the devs can match the battery life of stock GB I'll be back. It really is a great rom, I just can't recharge twice a day, and I'm not carrying around a 3500mAh battery in my pocket either.
Seriously, great work to all the devs who have taken it this far. Looking forward to the next couple releases.

DCRocks said:
Without a doubt, the biggest battery saver for me, is to turn off data until I want to use it.
I simply cannot believe the difference. Makes me think I'm gonna have to go out and get Juice Defender, and let it turn off data when I put the phone to sleep, it is just that dramatic.
I can call text, and play hours of games, and still have the battery have more juice remaining than it did over the same timeframe with just a call or two for usage with the data on.
Click to expand...
Click to collapse
I use JD for this and run it in extreme mode, which disables data until you physically enable it yourself (and after you enable it, it will disable again when the screen is off). Using it, I get a huge improvement in battery life, especially on CM9. It's kind of annoying having to enable it everytime you turn the screen back on, especially since it takes 4-5 seconds before data works again, but if it can give me the type of battery life it does, I am all for it. Other than the slightly noticeable lag I get compared to CM7 and other ROMs such as CleanGB (I know I can install supercharger, but I am talking pure stock CM9 here), I have no problems at all. Major props to all the developers involved for breathing new life into our OG Epics.

Nexus 4 battery the first week

Hey guys. I'm wondering how much better the battery has gotten since the first week y'all got it, to now.
For me I'm satisfied with the battery and I've had it for 4 days. I get about 2-2.5 hours screen on time with fairly heavy internet usage, texting, etc.

Beerad875 said:
Hey guys. I'm wondering how much better the battery has gotten since the first week y'all got it, to now.
For me I'm satisfied with the battery and I've had it for 4 days. I get about 2-2.5 hours screen on time with fairly heavy internet usage, texting, etc.
Click to expand...
Click to collapse
Are you taking any measures to save battery life, like certain screen brightness, disabling of certain features or radios, undervolting or CPU/Governor changes, etc?
First thing I installed on mine ( haven't had mine a week yet ) was Battery Monitor Widger Pro, since I've used that on my past devices when I was testing out generic batteries (speaking of which the 8$ ebay 3800mAh on my Desire-Z is still kicking strong after a year).
Problem with estimates, is that they are basically just that, and the difference between browsing on mobile vs browsing on wifi or mix, and your reception quality can also have an impact on your battery. (in the end, your screen is the biggest impact).
Mine lately, say if I had it charged at 100% , it'll take about 2 hours on mobile to get to 91%, with the screen being on about 25%-35% of that time (auto-brightness), receive/send text, take out of pocket to check email or facebook notifications, and so forth. Which would normally show as screen 30%, Google services 13%, Wifi 9% (when I had it on between house and destination). Phone idle 8%, Android OS 7% etc.
The widget I mentioned earlier can basically monitor your draw from time to time and if the screen was off or on and such during those times (default interval on it if using a widget is around 10 minutes on the logging, shorter may actually impact the battery it's monitoring oddly enough)
PS: The other day when I actually drained it down to 0% it took about 5-6 hours

Beerad875 said:
Hey guys. I'm wondering how much better the battery has gotten since the first week y'all got it, to now.
For me I'm satisfied with the battery and I've had it for 4 days. I get about 2-2.5 hours screen on time with fairly heavy internet usage, texting, etc.
Click to expand...
Click to collapse
I had about 3-4.5 hours of screen time other moderate to heavy usage on my first week as I was testing it's battery life. As that I just used my phone under light to moderate usage. My brightness level is always at it's lowest but when I'm outside I turn it up to about 50%. I rarely play games on my device. I read a lot on my phone. I use my phone to record lectures in class and do a bit of homework on it. 7 months later and I'm pretty much doing the same. I have a custom kernel installed and I'm really confidence about it. I carry a external battery pack with me all the time but I hardly use. After having a custom kernel for the past 7 months I can say battery life has been relativity the same screen time wise. I learned how to manage my apps so they won't prevent my phone from sleeping to save power. Your mileage will vary depending on what you're doing on your phone and how you manage your device. Cell service is crucial to the phone. If you're in area with little to no service your device will use up more power to stay connected. This is when "Airplane mode" comes in handy.

kbeezie said:
Are you taking any measures to save battery life, like certain screen brightness, disabling of certain features or radios, undervolting or CPU/Governor changes, etc?
First thing I installed on mine ( haven't had mine a week yet ) was Battery Monitor Widger Pro, since I've used that on my past devices when I was testing out generic batteries (speaking of which the 8$ ebay 3800mAh on my Desire-Z is still kicking strong after a year).
Problem with estimates, is that they are basically just that, and the difference between browsing on mobile vs browsing on wifi or mix, and your reception quality can also have an impact on your battery. (in the end, your screen is the biggest impact).
Mine lately, say if I had it charged at 100% , it'll take about 2 hours on mobile to get to 91%, with the screen being on about 25%-35% of that time (auto-brightness), receive/send text, take out of pocket to check email or facebook notifications, and so forth. Which would normally show as screen 30%, Google services 13%, Wifi 9% (when I had it on between house and destination). Phone idle 8%, Android OS 7% etc.
The widget I mentioned earlier can basically monitor your draw from time to time and if the screen was off or on and such during those times (default interval on it if using a widget is around 10 minutes on the logging, shorter may actually impact the battery it's monitoring oddly enough)
PS: The other day when I actually drained it down to 0% it took about 5-6 hours
Click to expand...
Click to collapse
Nah. All stock, not rooted yet, auto-brightness, No auto sync. I don't get very good service at my work and I was about 28% without service during the time I was there. I would get on facebook and message people on facebook and text, surf the internet etc because it was slow. I had maybe 2 hours screen time and 8% battery life when I left work. It was probably 9 hours off the charger. Here. I'll post a screen shot after this post (On my computer right now)

Sent from my Nexus 4 using xda premium

Beerad875 said:
Nah. All stock, not rooted yet, auto-brightness, No auto sync. I don't get very good service at my work and I was about 28% without service during the time I was there. I would get on facebook and message people on facebook and text, surf the internet etc because it was slow. I had maybe 2 hours screen time and 8% battery life when I left work. It was probably 9 hours off the charger. Here. I'll post a screen shot after this post (On my computer right now)
Click to expand...
Click to collapse
One of the benefits to custom roms (though 'stock' on a nexus is well AOSP so...) is the ability to tweak that stuff to finer details, top it off with a custom kernel and can optimize even further. Just a matter of how far you want to take it.
I have a history of immediately rooting anything I get my hands on, so I tend to have very little experience with stock. But the Nexus devices are probably the only ones I could survive having stock (but rooted) as opposed to say touchWhiz on samsung.

I can say that this phone charges FAAAAAAST.

kbeezie said:
One of the benefits to custom roms (though 'stock' on a nexus is well AOSP so...) is the ability to tweak that stuff to finer details, top it off with a custom kernel and can optimize even further. Just a matter of how far you want to take it.
I have a history of immediately rooting anything I get my hands on, so I tend to have very little experience with stock. But the Nexus devices are probably the only ones I could survive having stock (but rooted) as opposed to say touchWhiz on samsung.
Click to expand...
Click to collapse
Coming from the the backflip's motoblur to the Captivate's touchwiz then onto One X's sense to AOSP.. I'm going to stay android purist from now on. I'm in love with AOSP

Beerad875 said:
Coming from the the backflip's motoblur to the Captivate's touchwiz then onto One X's sense to AOSP.. I'm going to stay android purist from now on. I'm in love with AOSP
Click to expand...
Click to collapse
At least all the available kernels work just fine with AOSP. (Francos seems to be pretty popular for battery, I prefer bricked though on both my N4 and N7).

kbeezie said:
At least all the available kernels work just fine with AOSP. (Francos seems to be pretty popular for battery, I prefer bricked though on both my N4 and N7).
Click to expand...
Click to collapse
Why do you prefer them?
So with battery monitor widget pro do I just let it run and collect data?

kbeezie said:
At least all the available kernels work just fine with AOSP. (Francos seems to be pretty popular for battery, I prefer bricked though on both my N4 and N7).
Click to expand...
Click to collapse
Guess tonight I'm going to work on getting it drained down to 0% just remembered it was my N7 that I did a full cycle on with monitoring, I haven't done so yet to the N4.
PS: I usually do a dual-graph (mV and mA), but in this screenshot you can see generally speaking with my current configuration, I tend to drain around 200-300 mA screen on, and around -20-50 with it off.
PS#2 : It only went up to the -400 or so mA on the top right because I had changed my screen brightness to about half instead of autobrightness.

Beerad875 said:
Why do you prefer them?
Click to expand...
Click to collapse
Additional options. Take for example the Bricked kernel for the N4 in my signature. This is it's feature list, it's not aimed for hardcore overclockers or such but gives you some options (The one for the Nexus 7 is a bit more configurable during the installation).
* Based upon Googles msm 3.4 source
* Various other fixes (look @ github)
* Compiled with gcc4.7.2 toolchain (linaro 09.12)
* -O3 optimized
* Snapdragon S4 & CortexA15 optimizations
* Sweep2wake
* 192Mhz min clock
* replaced qcoms hotplug binary with msm_mpdecision (IN-KERNEL, better battery life + performance)
* Extensive sysfs interface for mpdecision with all the tuneables you want (/sys/kernel/msm_mpdecision/)
* replaced the thermald binary with my IN-KERNEL solution. (/sys/kernel/msm_thermal/)
* export krait version to: /sys/kernel/debug/krait_variant
* modified ondemand governor
* Allow OC up to 1,83Ghz, faux123 (from a thermal point of view that is now SAFE)
* Fixed min cpufreq resets
* Undervolting (faux123)
* Default clocks: 384min & 1512max
Click to expand...
Click to collapse
Sweep2Wake is kind of nice too, you just slide accross the screen to turn it on without having to touch the power button (And yes your phone is still asleep doing this, it just works off interupts.)
other kernels can be a bit more involved, such as being aimed towards overclocking the CPU or GPU, or adding in extra features not normally found in stock, and so forth. I've had the best luck with Bricked and Francos'
Beerad875 said:
So with battery monitor widget pro do I just let it run and collect data?
Click to expand...
Click to collapse
Yep, if you have a widget on the home screen (I usually do 2x1 size) it'll collect every 10 mins by default. If you don't use a widget you'd have to check a box in preference to monitor without widget or it won't log times (note for example the missing 'blocks' from my history log).
---------- Post added at 11:29 PM ---------- Previous post was at 11:22 PM ----------
Speaking of battery, anyone ever gotten more than say 800mA charge on their N4? Cuz even on my old Desire-Z if I plugged it into a 2.1A charger it would actually charge up around 1300-1500mA, but with the Nexus 4 seems that even on a 2.1A port it rarely charges more than 500-600mA.
It'll probably become more accurate once I actually drain it down to 0% and have the widget record it's history from 0% to 100% since it bases a lot of it's mA estimates off that (ie: off the rate of decrease of the battery's mv since batteries typically have a certain voltage once they hit near 0% and when they're at 100%, comebine that with what it knows the battery's mA to be it can determine the charge/discharge based off that).

kbeezie said:
[/COLOR]Speaking of battery, anyone ever gotten more than say 800mA charge on their N4? Cuz even on my old Desire-Z if I plugged it into a 2.1A charger it would actually charge up around 1300-1500mA, but with the Nexus 4 seems that even on a 2.1A port it rarely charges more than 500-600mA.
It'll probably become more accurate once I actually drain it down to 0% and have the widget record it's history from 0% to 100% since it bases a lot of it's mA estimates off that (ie: off the rate of decrease of the battery's mv since batteries typically have a certain voltage once they hit near 0% and when they're at 100%, comebine that with what it knows the battery's mA to be it can determine the charge/discharge based off that).
Click to expand...
Click to collapse
I can get back to you when I figure this app out more and start using it.
What'd you say your screen on time usually was?

Beerad875 said:
I can get back to you when I figure this app out more and start using it.
What'd you say your screen on time usually was?
Click to expand...
Click to collapse
Just in the last 2 hours or so, probably 30-45 minutes. I was in the car so it wasn't coming on all that often. Since I actually have the widget on my home screen now, I'll just post an update again probably in the morning as I play with the phone some more, maybe play a game or two (I'll set a Market in the battery history before I start and after I end it).
Far as figuring it out, it's pretty easy since most of it is already set up by default once you open it. You can basically just pop a 2x1 widget on the home screen and just leave it.

My battery life has improved drastically by just sticking with one setup and letting the phone get used to it. That means keep the same rom and kernel so the phone settles in and gets used to it. After a few cycles your usage should increase.
I recommend straight CM 10.1 with Franco kernel.
Also use 2g instead of HSPA+ when you're not using data to save power.
If you're using touch control, don't, it drains more power for sure.
Undervolting helps too.
Sent from my Nexus 4 using xda app-developers app

nyyankees1237 said:
If you're using touch control, don't, it drains more power for sure.
Click to expand...
Click to collapse
Can you clarify on this, other than the power/volume there's not much else to actually control the phone with.

kbeezie said:
Can you clarify on this, other than the power/volume there's not much else to actually control the phone with.
Click to expand...
Click to collapse
The app 'touch control' , many nexus 4 owners use it to wake and lock the phone using touch gestures in place of the traditional power button. In my usage it definitely drains the battery quicker.
Sent from my GT-N5110 using xda app-developers app

nyyankees1237 said:
The app 'touch control' , many nexus 4 owners use it to wake and lock the phone using touch gestures in place of the traditional power button. In my usage it definitely drains the battery quicker.
Sent from my GT-N5110 using xda app-developers app
Click to expand...
Click to collapse
Oh you mean like Sweep2Wake in the Bricked Kernel I'm using, except that doesn't use any battery cuz that's in the kernel using interrupts rather than an app that would keep the phone awake. (course that's all it does too, wake, nothing more sophisticated than that).
But yea I didn't know about that app.

kbeezie said:
Just in the last 2 hours or so, probably 30-45 minutes. I was in the car so it wasn't coming on all that often. Since I actually have the widget on my home screen now, I'll just post an update again probably in the morning as I play with the phone some more, maybe play a game or two (I'll set a Market in the battery history before I start and after I end it).
Far as figuring it out, it's pretty easy since most of it is already set up by default once you open it. You can basically just pop a 2x1 widget on the home screen and just leave it.
Click to expand...
Click to collapse
So yeah. You should drain it then report with some screenshots.

It's at 44% right now
Sent from my Nexus 4 using XDA Premium HD app