Database Info

Advanced Tricks for Saving Battery (it Works)

EDIT: Last Update: 10th Sep 2011 with New INfo (trick no.7)
Advanced Tricks for Saving Battery
The following tweaks can greatly save battery if you done it right. But bear in mind that risk are relatively higher since its involve those deep system components.
If you know what you're doing, there is not much to worry about.
Note: I will not responsible for the any damage of your device
My Result:
Before: After moderate usage of 20 hours, Battery Left 30% - 35%
After : After moderate usage of 20 hours, Battery left 70% - 75%
Note: Battery Usage is very subjective matter. The numbers here is not trying to give you an exact calculation, it just trying to give you a feel of how the battery saving. But i have try my best to be consistent on the usage pattern, cpu loads and temperature to do this comparison. Of cause, you might discover different result on your device. With different ROM, kernel, radio, usage, screen brightness, all the other factors come into play, the result would varied.
Kindly please post a feedback on how it works on your device>
1. Use Undervolted Kernel / ROM
- Undervolted means that your device will use relatively less battery to give the same CPU frequency
- (e.g. normally CPU run at 1.61ghz @1350mv, after undervolted it may require only 1275mv at the same frequency)
- Tested on my device, it is the most effective tweak to increase battery life (I reduced -100mv at most of the CPU frequency (except 1), give me about 30-35% more battery)
- Because the undervolting value is varied depend on the ROM and kernel, so no point i post all the numbers here. (PM me if you need the list)
- Ask at your respective ROM thread for the availability of undervolted tweak
- If you wanted to try to change the undervolting value, i recommended to use OC/UV beater2 http://forum.xda-developers.com/showthread.php?t=1207546
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- Because the tool have ease-to-use interface (no need use terminal emulator), just few taps will do.
- Most importantly, we can test new UV value with "Temp Activate", if the device freeze, just restart and it will go back to the last good state (last best config for you, instead of kernel's default value), and no need to flash the vddreset.zip / other reset.zip
2. Use "GSM auto (PRL) to save more juice while still connecting through 3G
- in the phone setting>wireless and network>MobileNetwork>NetworkMode
we are only allow to choose GSM only/ WCDMA / Auto between two
- but if you use type "*#*#4636#*#*" to phone Information, you can choose more type of networkmode. It is claimed that choose "GSM auto (PRL)" allow you to save more battery (cell standby) while allow you to connect to 3G network.
- This might somehow depend on your carrier / provider
- Please provide feedback on this. THanks
3. Try out different CPU Governor
- nowadays a lot of ROM have advanced CPU governor like Smoothass, Smartass, Interactive, etc.
- Try different combination during wake up and screen off to look for the best setting that let u save more juice
- This are my settings:
Governor during awake = On Demand
Max Wake = 998mhz​ Min Wake = 122mhz​ Governor during Screenoff = PowerSave
Max Sleep = 307mhz​ Min Sleep = 122mhz​ - NOTE: if you put min sleep too low, there is a chance that you device might freeze and won't wake up!
- I personally recommended "DaemonController" from Sybregunne for controlling the CPU governors and frequencies. It is a ease-to-use, yet sophisticated enough for the purpose of OC/UC. It is my favourite OC/UC controller since it released.
- DaemonController is a smart tool that it will bypass virtous daemon, and use direct frequency if we choose governors that is incompatible with the virtuous o/c. Hence, only 1 deamon is run which is more efficiency.
- Refer to the original thread here for more details: http://forum.xda-developers.com/showpost.php?p=16726715&postcount=2
- Quoted from original thread: "It is a Graphical tool that allows users to change andrev_oc/virtuous_oc frequencies and governors without having to reboot their device. Confirmed to work on Android Revolution HD 6.1.0 and a lot more ROMS.
4. Use AutoKiller Memory Optimizer
- This tool is different from other app killer
- It fine tunes android systems inner memory manager to keep your device fast over time.
- As a side effect it also lowers battery consumption.
- At certain free memory level (e.g. 250mb), the android os will automatically close those apps not in use (according to original android os logic)
- The lowMemoryKill level can be modified to suit your style of usage. It is to find a balance point between "not killing the apps you're need" and "sufficient free RAM to avoid sudden out of RAM / Laggy ".
- What i experience before is that these values are set to be too low. It keep most of the apps opened in background. So we can use the apps much faster and consump less cpu. Result: we have lower free RAM. The tradeoff: When I open heavy game, I experienced run out of RAM (it tell me not sufficient RAM to run).
- When the values set too high. It will kill the apps in background faster. So we will spend more cpu, and slower to reopen it. Tradeoff: you will have alot of free RAM back there. But for what?
- Therefore, it is to find the middle point that satisfy both ends. Generally, users with more apps better off with lower lowmemorykill value. Users with less apps (always switch between fews app only), are better off with higher lowmemorykill value.
- MY case: I only have 25+ apps installed. and Only use few apps (other rarely use). THis is my setting (in Pages): 3072, 8192, 16384, 50688, 58368, 76288. I have experimented with many values for 3 months. Just 1 month ago, i found these value suit me very much. It keep balance between the two tradeoff mentioned. Maybe you can try to figure out your own.
- Generally, we play with the last 3 numbers only. The first 3 numbers is related to:
(Foreground app)
(Visible app)
(Secondary server)
Which offer no significant benefits if we kill them.
5. Use Autostart
- Instead of closing them, it would be better if we don't let the app start from the begining
- You can choose to disable those app that u feel unnessary, so that they will not run during your phone startup
5. Check your Battery Consumption
- Download "Current Widget" or "battery monitoring widget" from market
- these apps will monitor your battery usage and recoded in a log file
- This is the normal consumption rate (varied across ROM, kernel and CPUI frequency and other factors)
Sleep/ScreenOff Consumption: 2mv - 8mv
WakeUp Consumption (no wifi, just use local apps, no gaming): 150mv - 250mv
Gaming consumption: about 300 - 400 mv (varied across diff games)
- To be comparable, it is suggest that you try to compare the consumption rate with your friends with same ROM, kernel, radio)
- With the monitoring log, you will able to notice adnormal peak / adnormal high drainage easily
6. Use "Battery History for GingerBreak" to check what running in background (Especially thanks for Saluco for this useful way to check battery drainage )
- this is a free tool can be download from xds forum http://forum.xda-developers.com/showthread.php?p=13328125
- Go to "Partial Wake Usage" to see what apps running when your device is sleeping
- Please "thanks" the developers of the apps for creating and letting us use his useful tool
- Give the screenshot of "Battery History for Gingerbreak" to the community of your ROM, this will give them more clues for them to help you
- For consistency, please monitor your usage for at least 3 hours (@ frequency 1 - 5 minutes) in order to have sufficient data and reliable readings.
7. Disable "Receiver" of application using AutoRun Manager (Really for Advanced User ONLY)
- Receivers are the "condition" where if it is fulfilled, the app will be executed
- For stance, Google Map has 8 receivers. Either 1 of these 8 conditions is met, google map will be open and run automatically.
- Now we actually try to disable this autoRUN by disable the "receiver" = means that even if the condition is met, the app won't run
- TO do this we need donated version of AutoRun Manager (available in market) to do this, go setting enable advanced mode
- Go second tap of the menu (advanced menu) to disable the receiver of particular app
- It is HIGHLY recommended to disable 1 receiver at 1 time, so that you can know the impact and trace back to the receiver
- you might get confused if you disable too many receivers at 1 time
- WARNING: ONLY disable those receiver that you know. DIsable system's receiver will make your system instable. So better only disable the user app.
- WHY IT IS USEFUL? Example: i used "Battery History for Gingerbreak (tip 6) to found out that "Facebook for android" is locking my device from being deep sleep (as it shown as high minute usage in the "partial wake menu"). Then i wanted to disable the feature of the that keep my device awake. THen i disable the "awake service" receive of it. Then it will help to save more battery by preventing those app that run automatically when certain conditions are met (example: Wifi-on, location changed..etc_
<More humble sharing is coming>
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------------------------------------------------------------------------------------------------------------------------------------------------------------
(The content is talking about HTC Desire HD, but the tricks can generally apply to any other smartphones, Hope it help you~)
Well it’s been 7½ days since I reviewed the Desire HD in which I said I didn’t want to comment on battery life until I’ve used it for 10 days. Tomorrow morning at 10am will be the 10th day, but I’m ready 14 hours early!
I’ve seen a lot of talk on the internet about terrible battery life, I’ve even experienced it myself (10% per hour on standby) but not wanting to give it a bad name without being sure, I’ve waited. I can now declare – the Desire HD does not have a battery life issue!
Read on after the break for how you can make yours last 24 hours on one charge!
Let me explain first of all, why I don’t think there is an issue. My Desire HD, last night and today, has shown better battery life than my Samsung Galaxy S and Nexus One ever did. It will probably continue to improve for the next week too.
Yesterday, after 10 hours of medium to light use (screen on was 40 minutes), I was still at 59% battery.
Today, I’ve been off for 12 hours and I’m still at 48%. The screen has been on for 50 minutes, 30 minutes of streaming music via bluetooth, 1 hour of podcasts playing through my earphones and a few text messages. Generally, on standby (and not being used) on 3G while at work, it was only using 2% an hour! I’m not [/B]sure any Android phone has ever managed that low consumption for me.
I don’t know how HTC have managed it from a 1230mAh battery, but if anyone manages to produce an ‘extended’ battery that fits, this thing could last a very long time. As for what the Desire Z might be able to do, wow!
So, what have I done to get this? As well as the usual tips I’ve given, here’s a few more for your Desire HD -
Remove apps you don’t use. You’ll need to root your device with VISIONary and then remove system apps like Flickr, Twitter, Stocks, Peep, Gmail and Friend Stream using Titanium Backup.
Syncing kills! Go to Settings -> Accounts & sync and see what apps are set to sync. For me, a big improvement came from turning off syncing my Facebook ‘Live Feed’ (this seems to turn back on at reboot). Also, only have one of the two Facebook apps syncing at all. For me, I stopped HTC Sense, News and Weather from syncing. If you really want these, maybe just drop their frequency an extra hour or two.
Lower e-mail checks. I have 4 e-mail accounts that K9 Mail checks for me. Like the other syncs, I dropped them from 15 minutes, to 1 or 2 hours, 4 for the less important one. Definitely don’t use the push e-mail setting on K9.
Try different connections. Go to Settings -> Wireless & networks -> Mobile networks and change Network Mode. For me, for some reason on Orange in London ‘WCDMA only’ works the best for me.
Calibrate. After 7 to 10 days use, calibrate your battery and you should be good to go, simple as that!
**ADDITION** Once in a while (if not always) try charging via USB rather than mains. It has been reported this is better for the battery and will actually provide better life from one charge. I can’t necessarily say this claim is true, but I have often seemingly got better life from a USB charge. Try it!
Bear in mind, there are people reporting much better life than I get. Some say they can last over 40 hours on one charge.
Also, make use of the ‘Power Saver’ in Settings. I’ve put mine at 30%. When this kicks in I tend to find battery consumption might even drop to 1% per hour, which means it may be possible you could last for 3 days on one charge! I can’t wait to see what happens when we get proper root and can use custom ROM’s!
(source:http://hemorrdroids.net/htc-desire-hd-battery-life/)
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Looking for general guideline for your Lithium Ion Battery?
Have a look at this http://forum.xda-developers.com/showthread.php?p=15631703#post15631703

i might have to try this on my fassy

Is it necessary to have one of these threads every other day?
Sent from my HTC Sensation 4G

Turn off your phone. Battery life will be awesome.
Otherwise carry spare chargers and/or batteries. Simples.

DirkGently1 said:
Turn off your phone. Battery life will be awesome.
Otherwise carry spare chargers and/or batteries. Simples.
Click to expand...
Click to collapse
Lol. I have 3 spare batteries, girlfriend has 2. Still chew through em in a day
ADR6300

Not really sure anything here is new information...

Cheers, I'll try a couple of these.

How about putting your phone into Flight mode while at work.
I, for my part, get my mails to my desktop machine anyways and i like the fact, no one can distract me while I'm hacking in a gazzillion lines of code.
If it's important my lazy colleagues can use their legs and walk into my office.

flight mode is as good as switching off your phone

My battery already goes down like 1% every hour when the screen is off. So it's fine to me. It's only when I'm actively using WhatsApp, Facebook and Twitter that it goes down faster.
Main killer of the battery is the screen. The screen with high backlight burns through it. While idle it hardly drains.

thanks for this

servellia said:
How about putting your phone into Flight mode while at work.
Click to expand...
Click to collapse
I would get fired if I do that

I think you just made s regular phone from your smartphone
Sent from my Desire HD using XDA Premium App

Good reminders - thanks.

cooooll thanksss

DirkGently1 said:
Turn off your phone. Battery life will be awesome.
Otherwise carry spare chargers and/or batteries. Simples.
Click to expand...
Click to collapse
niceeeeeeeeeee

Thanks for the tips, although if Google just closed maps instead of having it open all the time!
Bet that would save some battery!

Good one to see... thanks for the post

I´ll try this...
Thanks!

I use Juice defender beta with ultimate features and i did calibrate my battery. It's 1:26 AM and through moderate to heavy usage i'm still at 41%. It still has a lot to do with your CPU speed (over/under clocked), ROM, Radio and kernel. I'm CM7 Lordmod's CFS kernel and the latest Radio from AT&T Stock (I have the Inspire the Desire HD's identical cousin.) and a RIL to match. Oh and I'm Overclocked to ~1.2 GHz using the ondemand governor.

[APP][ROOT][FREE] [2.1+] One Power Guard 2.3 New Year Version (Updated 2012-12-30)

This is old post, new post from http://forum.xda-developers.com/showthread.php?t=1947559
One Power Guard is an unique battery protection app - One is all cool(xuan). you can download from Google Play
Maybe it is a war about which one is the best battery saver. The first thing you need to know about these posts from [34] [35] [36] [37] [38] [39] [40] [41]
Finally, ptcpayme said “History(story without climax)” , More and more like a war.
If you need help, feedback or help me, you can send an email. [email protected]
Make sure don't install the 1.7 version. The New Year Version (V2.3) Release, I will keep two weeks to release a new version.
Super standby, The software design thinking: Without affecting the users's Favorite things, also can save battery. Let us try it
One Power Guard is a unique battery enhancement tool designed to conserve your battery power an increase uptime on rooted Android smartphones/tablets. One Power Guard will decrease your charging time and increase your device performance while also increasing your uptime. One Power Guard will also protect your device from faulty applications that can: cause over-heating (decreasing your battery lifespan); run down your battery; prevent your device from deep-sleeping; and, use unneeded resources such as WiFi and Cell Data. By selecting any one of the six customized power-saving modes, you are able to match your power savings needs to your lifestyle. There is no need to purchase extra batterys or a larger battery, just use One Power Guard.
Features
1. Extends stand-by time and battery life; optimizes charging parameters
2. Optimizes system kernel and CPU usage to improve device performance
3. Six (6) customized power-saving modes to suit different scenarios
4. Proactively guards from power-killer apps and safely shuts down useless power-consuming programs
5. Fast ON/OFF settings for 100% system customization
6. Intelligently switches to/from WiFi/Cell data to preserve battery life
7. Professional Tips on power optimization
AI Mode: Artificial Intelligence Mode. Learns from how you use your device.
By default, this mode uses the Ondemand governor - under increasing system load, the CPU is immediately set to the maximum frequency of the kernel. As system load decreases, the CPU frequency slowly decreases to the minimum frequency of the kernel.
NOTE: If your kernel supports over/under clocking you may want to change the upper/lower frequency bounds to stay within safe limits.
By default, AI Mode uses the CFQ (Completely Fair Queuing) I/O scheduler - delivers balanced performance and excels on multi-processor devices. Changing the governor and the I/O scheduler are permitted but, that defeats the benefits of the AI mode. Use Custom mode, if you want to explore different settings.
Powersave Mode: A balance between device usage and power saving.
By default, this mode uses the Powersave governor - keeps the CPU frequency always at the minimum, it is the least power-hungry and the least responsive.
By default, this modes uses the CFQ (Completely Fair Queuing) I/O scheduler - delivers balanced performance and excels on multi-processor devices.
Game/Video Mode: Useful mode for playing games and watching video - enjoy smooth operation and a smooth video experience.
By default, uses the Performance governor - sets the min. frequency as max. frequency, this mode is the most power-hungry, but is also the most responsive. If your kernel support overclocking you can set a higher frequency.
By default, this mode uses the CFQ (Completely Fair Queuing) I/O scheduler - delivers balanced performance and excels on multi-processor devices.
Daily Mode: Useful for day-to-day operation, featuring responsive and reasonable power usage.
By default, this mode uses the Ondemand governor - under increasing system load, the CPU is immediately set to the maximum frequency of the kernel. As system load decreases, the CPU frequency slowly decreases to the minimum frequency of the kernel.
NOTE: If your kernel supports over/under clocking you may want to change the upper/lower frequency bounds to stay within safe limits.
By default, this mode uses the CFQ (Completely Fair Queuing) I/O scheduler - delivers balanced performance and excels on multi-processor devices.
Standby Mode: Useful for maximum battery conservation.
By default, this mode uses the Powersave governor - keeps the CPU frequency always at the minimum, it is the least power-hungry and the least responsive.
By default, this modes uses the CFQ (Completely Fair Queuing) I/O scheduler - delivers balanced performance and excels on multi-processor devices.
Custom Mode: You choose everything: the governor, the min and max frequencies, and the I/O scheduler. Do a Nandroid backup first. Have Fun!
Test One Power Guard for yourself?
1. Fully charge your battery before you go to bed. In the morning, check your battery status and note how much is remaining.
2. After installing One Power Guard, fully charge the battery before you go to bed. In the morning, check your battery status, you will be impressed by the power savings!
3. To compare the optimization results, you need to restart the phone so that you have a clean environment.
First of all, what are the common complaints with android smartphone devices? Issues such as: system halted; application crashes; slow booting; and, battery life.
A year ago, I purchased my first android phone and installed CM ROM. Within months, I became very
annoyed that my battery did not last the entire day. I could go to bed, with a full battery charge, and awake in the morning to find that the battery charge had dropped significantly overnight. I found this situation to be unacceptable! To solve this, I downloaded power-saving applications.
Every day I would install a different power saving application, charge the battery to full power before bed, and then check the battery in the morning. After a month of testing power saving applications, I didn't find a satisfactory solution and some of the so-called power saving apps even made the battery drain faster. So, I thought I would create an app for myself, that could tweak system parameters and help save my battery. Nine months ago, I started writing a power tweaking application for myself. I studied the intracies of the android power management mechanism and within a few months I had the basis for an application that could optimize my power management. Everyday, I tweaked the power optimization parameters and tested each night. One morning, I awoke and was thrilled to discover that the battery charge had only decreased by a small amount. So, I turned my personal power saving tweaker into a user-friendly power saving application that anyone could use. I am sharing my application, One Power Guard with you.
If you would like to try One Power Guard, Download from onexuan.com
To save power, One Power Guard do some optimization:
1. Extends stand-by time and battery life; optimizes charging parameters
2. Optimizes system kernel and CPU usage to improve device performance
3. Six (6) customized power-saving modes to suit different scenarios
4. Proactively guards from power-killer apps and safely shuts down useless power-consuming programs
5. Fast ON/OFF settings for 100% system customization
6. Intelligently switches to/from WiFi/Cell data to preserve battery life
7. Professional Tips on power optimization
Why do you need One Power Guard? and Test One Power Guard for yourself.
1. Fully charge your battery before you go to bed. In the morning, check your battery status and note how much is remaining.
2. After installing One Power Guard, fully charge the battery before you go to bed. In the morning, check your battery status, you will be impressed by the power savings!
3. To compare the optimization results, you need to restart the phone so that you have a clean environment.
Why does it run in the background?
We have a "safe clean" technology, primarily in order to protect your battery. Needs to run in the background, to periodically safe clean.
What is a safe clean?
Android has a app process management mechanisms, when a process is killed by third-part applications, the android system will determine whether the process will be run again, if it is, th e process will run, the kill process will repeat thereby creating an infinite loop, resulting in increased power consumption. Therefore, you should consider uninstalling third-party process management software.
Why is my device slow after setting a mode?
I want to talk about this story. One night, a user contacted me about an issue that came up after installing the 2.1 version of One Power Guard. He said his device lagged in Standby mode. I told him that we can work together to solve his problem. After work, I went back to my dorm. I started to write a test interface for him and 1.5 hours later, we started testing. He began to test my ten-step interface - each step ran well. But the issue was not resolved. I asked him to select AI mode - his device lagged. What we found is that his device did not support changing CPU frequencies. So my judgment was that this was an I/O scheduler issue, it was set to "CFQ". I asked him to try changing his I/O scheduler. (His Rom Only support CFQ and Noop). He changed to "Noop" and the lag went away - issue resolved!
Final conclusion: Tweak the settings until your device performs to your satisfaction.
The software allow the common user to gain the benefits without having to understand the technical stuff thus the 6 modes for common uses like gaming. Any "battery saving program" is truly just a front end to tweaks and settings changes that can be done manually. The point is it makes making those changes much easier.
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The 2.3 Version begins to support open API.
This is One Power Guard API Demo, API Doc, you can learn more about API from https://github.com/onexuan
if you develop an app with One Power Guard API, let me know, I will show it to everyone!
Who can help polishing English and localized? Does not currently support Polish Japanese, Korean....Already supports English, Spanish, Chinese, German
Localization_V2.3.rar

Hi, everybody, I need your feedback to help improve application.

I thought the modes were free it eats more ram than my launcher and I don't see any difference. Anyways, the floating window and notification bar icon is really cool!
Sent from my GT-I9070 using xda app-developers app

lthy31 said:
I thought the modes were free it eats more ram than my launcher and I don't see any difference. Anyways, the floating window and notification bar icon is really cool!
Sent from my GT-I9070 using xda app-developers app
Click to expand...
Click to collapse
Do You root your phone? If you are not an advanced user, ai mode is sufficient. Some optimizations has been optimized. So you didn't feel anything different.

Yep, phone is rooted, drains alot of battery, eats ram only wifi turned on
Sent from my GT-I9070 using xda app-developers app

[Q] How to Get Amazing Battery Life

Hey everyone,
Lately I've been in the works of trying to get better battery life, as I only get about 2 - 2.5 hours of on screen time. I've seen other users get anywhere between 5-7 hours. I do use facebook, and have uninstalled the official facebook app for the friendcaster one, but have yet to still hit anywhere near that amount of time.
Out of curiosity, and hopefully future reference for other users, what are some great ways to boost battery life? Do you use apps? Uninstall software? Please, do share!

justin0025 said:
Hey everyone,
Lately I've been in the works of trying to get better battery life, as I only get about 2 - 2.5 hours of on screen time. I've seen other users get anywhere between 5-7 hours. I do use facebook, and have uninstalled the official facebook app for the friendcaster one, but have yet to still hit anywhere near that amount of time.
Out of curiosity, and hopefully future reference for other users, what are some great ways to boost battery life? Do you use apps? Uninstall software? Please, do share!
Click to expand...
Click to collapse
Manually controlling screen brightness was the biggest increase for me. The other one that helped was 2g data when i turn off the screen.

Freeeeze apps with Titanium Backup. You wont miss anything neither you loose perfomance, no you gain.
Sent from my HTC One S using xda premium

Change notification updates to suit your needs. Stuff that you don't need to know right away, lower frequency or turn to manual. For instance:
- Change weather updates to every 1-2 hours, unless you really need to know that it changed by a couple degrees as it does.
- Decrease facebook notifications (big one. If you use it a lot, then keep it high, but realize that this WILL drain battery.)
- Manually update stocks (again, if you don't need them instantaneously)
- Blog & News apps usually set notifications on by default, disable or lower frequency on them
- Lower screen brightness
- Turn display to auto sleep 30sec-1min tops
Note that while some of the notification controls can be found within the system settings, many apps will require you to go to their individual settings to adjust them.
All depends what you do with it. Navigation, internet, talk time and intense games all suck up more battery. That doesn't mean you shouldn't do that stuff, but it's just the way it is on any device.

Simple, root and install CPU sleeper, that should give u a lot of battery life.. at least that's how I do it and today I unplugged my phone at 10 am and its 9:25 and I have 65% left
Sent from my HTC One S Unlocked
using XDA Premium

justin0025 said:
Hey everyone,
Lately I've been in the works of trying to get better battery life, as I only get about 2 - 2.5 hours of on screen time. I've seen other users get anywhere between 5-7 hours. I do use facebook, and have uninstalled the official facebook app for the friendcaster one, but have yet to still hit anywhere near that amount of time.
Out of curiosity, and hopefully future reference for other users, what are some great ways to boost battery life? Do you use apps? Uninstall software? Please, do share!
Click to expand...
Click to collapse
Almost all of em are running on custom roms I beat and I'm the one you said that with 5 - 7 hours screen time everyday. There are many things to do to maximum the battery performance and first thing is root and unlock your phone and flash a custom rom. If you are on stock rom, it would be almost a no go.
1. Flash ViperOneS 1.2 rom or One maximuS V2.5 rom, they are the best sense based rom with the greatest battery performance I've seen.
2. If you don't need sense, flash cm10 or aokp. They should give you more battery because they aren't as resources hog as sense. However, you couldn't use sense UI and access to the dedicated image chip in camera.
3. Turn the brightness level down to as low as possible, this is the major battery killer.
4. Switch to 2G when you are in standby mode. Disable fast dormancy, it will save you battery in standby mode at the cost of connection speed when you surf web it will be slower but it does save you some battery in standby status. You can disable it in ViperOneS's tweaking but you'll have to do it manually in all other roms but that is very very easy. Personally, I let it on because the 3G speed isn't good in Hong Kong, too many iphone/android everywhere here, over crowed. In every street in HK are messed up by SGS3/Note/Note2/Iphone, think about how horrible it is.
http://forum.xda-developers.com/showthread.php?t=1684604
5. Turn off wifi when you don't use it, disable max performance in wifi setting. Turn the auto-sync off when you don't need it too.
6. Just remove all apps and bloatware you don't want. When you flash ViperOneS/maximuS 's add-on, you will have a list to do it.
7. Some bloatware will still be there after flash the add-on. You have to download systemapp remover to del those apps.
8. Some apps like to run as services mode and they drain battery in background like youtube, google map, playstore. You need to download AutoStarts and force them to disable as an auto-startup services after bootup.
9. Download Systempanel and check any non-system apps running at services mode in background. Force them stop in control panel. I only have four non-system apps let them running as services like whatsapp.
10. Don't run too many widgets, I only have two widgets on. Don't use 3D wallpaper.
11. Use opera mobile to surf web. The stock browser and chrome should faster but sometimes they drain battery real quick.
12. Turn the cpu mhz down when you are just doing some normal/easy works because the stock kernel has very suck governor performance(only ages governor: on-demand, save battery, max performance) and drains battery fast. Turn the cpu mhz back to high level only when you play games, this will save you great battery. Don't worry S4 CPU is still very powerful even you set it to half speed. You can flash custom kernel if you don't like to turn cpu speed up/down, they introduce more efficiency governors to handle it automatically but all 3rd kernels are likely to have some bugs at this time. There aren't many active developers out there.
13. After a heavy or long using like a full battery cycle, reboot the OS to clean up the cache/memory leak.
14. Use nova launcher or apex launcher to replace the sense launcher.
Well, I basically do ALL the stuffs above and got 5 ~ 7hrs screen time. Today, I do surf the web like mad(4hrs), 1hr 720p movie(software decode in MX Player as it's a rmvb movie), 30mins+ music with poweramp. Guess what? I got exactly 5hrs screen time and 1% battery left when I get back to home, very lucky though. I think my usage is a bit high today, normally I have 6hrs screen time average.

A lot of people on stock ROMs can get that sort of battery life too.
This is mine on stock:
http://forum.xda-developers.com/showthread.php?p=27010378#post27010378
Also wrote a quick guide, pretty similar to the above:
Terminator19 said:
Leave "best wifi performance" turned off.
Disable any apps that you don't need in settings>apps>click on app>disable at top right
Don't have weather etc. syncing every 30 minutes etc. set to something like 2 or 3 hours.
Manually control the screen brightness as auto makes the battery life worse, install qbright from the market and set a gesture so when you swipe up or down on the homescreen or dock icons this app is opened like the below:
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
I have it set to currently; night is 0%, indoor 30%, outdoor 50% and sunshine 70%
Keep wifi on as much as possible and set to never sleep
Keep GSM mode selected instead of WCDMA in mobile network settings as one; the voice reception is stronger and better battery life even when connected to wifi I found.
If you aren't going to be using any internet at all for quite while (meaning no need for weather, emails to sync etc.) then turn wifi and mobile network data off.
Only enable WCDMA when you want to browse or stream something (only when wifi is not possible)
Don't use any form of a task killer, if an app isn't responding just use the built in one.
Click to expand...
Click to collapse

WOW! Thanks guys! I'll definitely be trying these tips today.
Lets keep'em coming!

I'm running CM10 and all I did was lower my CPU clock to 1134 and I get great battery life. I also try to keep my wifi off as often as possible. I have auto-brightness and auto-sync on and usually get 6-7 hours and don't have to charge it all day. I prefer being able to use the better governers on top of the decreased frequency, but I haven't been able to get the Fusion AOSP kernel working on CM10 for quite some time.

Jewcifer said:
I'm running CM10 and all I did was lower my CPU clock to 1134 and I get great battery life. I also try to keep my wifi off as often as possible. I have auto-brightness and auto-sync on and usually get 6-7 hours and don't have to charge it all day. I prefer being able to use the better governers on top of the decreased frequency, but I haven't been able to get the Fusion AOSP kernel working on CM10 for quite some time.
Click to expand...
Click to collapse
I've always thought about under-clocking my CPU. I'll give that a try too. I'm sure i don't need the full 1.5ghz. I'll play around with them and see which will fit my needs .

My battery lasts twice as much just by turning the mobile internet off. I turn it on only when I need to surf the web/sync my apps and turn it back off right after.:victory:

Change governor to smartass2 and set your max CPU frequency at 1ghz. Also you can install app called llama for profiles switching and battery saving.

[tips] {save battery} {all phones}

Hi all
Here are a few tips i would like to share wid u all. These tips will help u extract the maximum juice out of your androids
Starting wid the simplest one
TIP NO 1 - ENABLE EXTENDED STANDBY MODE IN POWER SETTINGS{xperia 2012 series only}
If u are on stock ics rom , go to settings, power management and check extended standby mode.
yes do it, this doesn't affects battery drain but enhance the standby time .
This helps to switch off wifi and data traffic when the phone screen is switched off for sometime.
Basic but most useful.
When this is enabled , u dun need apps like Juice defender or DS battery saver
TIP NO. 2 - DO NOT USE ANY APP KILLERS OR TASK MANAGERS
Most of us use task manager to kill apps running the background regularly.
But we may notice that most of the apps killed by task managers get restarted by themselves.
Thus all these app killers continue to drain battery and do the same thing all around,
These app killers will also make your phone laggy to some extent because of poor ram management
TIP NO. 3 - UNDERCLOCK
If u use your phone only for basic purposes such as messaging and calls then there is no problem in underclocking.
800Mhz would be fine wid minimum or no performance glitches.
This not only relives strain on cpu but saves battery.
I myself have underclocked this and belive me 800mhz does not affects the performace of most of the games(if u play)
TIP NO. 4 - USE GOVERNORS
There is no defination for governors but u can say these are the engines that control the cpu frequency time to time
There are several governors present most commonly used being ondemandx , conservative and powersave.
1: OnDemand Governor:
This governor has a hair trigger for boosting clockspeed to the maximum speed set by the user. If the CPU load placed by the user abates, the OnDemand governor will slowly step back down through the kernel's frequency steppings until it settles at the lowest possible frequency, or the user executes another task to demand a ramp.
2: Performance Governor:
This locks the phone's CPU at maximum frequency. While this may sound like an ugly idea, there is growing evidence to suggest that running a phone at its maximum frequency at all times will allow a faster race-to-idle.
3: Powersave Governor:
The opposite of the Performance governor, the Powersave governor locks the CPU frequency at the lowest frequency set by the user.
4: Conservative:
A slower Ondemand which scales up slowly to save battery. The conservative governor is based on the ondemand governor. It functions like the Ondemand governor by dynamically adjusting frequencies based on processor utilization. However, the conservative governor increases and decreases CPU speed more gradually.
go to this page to know more about governors
http://androidforums.com/xperia-mini-all-things-root/513426-android-cpu-governors-explained.html
For setting up governors (if installed) and underclocking use a free app like Antutu Cpu Master (https://play.google.com/store/apps/details?id=com.antutu.CpuMasterFree&hl=en )
TIP NO. 5 - DON'T INSTALL APPS UNNECESSARILY
This does not needs an explanation. Just remember that when apps run in background , they consume battery. More the number of unnecessary apps running, the more faster is the battery drain.
Keep only those apps which u use frequently and if u are a rooted user, delete all bloatwares, FREEZE GMAPS AND TIMESCAPE IF U DUN USE IT.
TIP NO. 6 - CHOOSE NETWORK MODE AS PER YOUR NEED
Whether you are using WCDMA or GSM network or WCDMA/GSM , choose it as per your need.
If u are on the internet only for surfing then use GSM mode and switch to WCDMA only if u need to download.
This as per my usage has the greatest impact on battery life.
to select network mode , go to settings>more>mobile networks>network mode
While surfing only (xda ) i use opera mini app wid GSM mode enabled and its very fast .
P.S. - charging your battery only when it is about to get exhausted belongs to old school now. Charge whenever u can charge
NONE OF THESE TIPS REQUIRES SOMETHING SPECIAL OR TECHNICAL TRY THEM AND U WILL DEFINATELY FEEL THE DIFFERENCE
I hope you like my guide, its not copy pasted , its not stolen from someone, its purely my experience.
If u find any discrepancy plz let me know.
Feel free to share your tips here and discuss your experience

[APP][3.0+] Battery Utility - Advance Battery Saver with Advance Android Tweaks

Battery Care : We will keep your Battery safe & Make sure your devices is Fast, Faster,, faster!!!
Playstore link : https://play.google.com/store/apps/details?id=com.blcpk.toolkit.app
Ad-free version uploaded in OP for XDA members....
We have add most important 15 Key features of Android ; We are very sure after using this application your going to Uninstall around 10+ apps..
Advanced stats
Battery History
Wake lack
Battery stats
Battery Alarm
Power saver
Drain test
Wipe
App Permission
CPU Tweak
Game Tweak
Storage Tweak
System Tweak
Sensor Tweak
Sound tweak
[*]Coming Soon [*]App locker, Screen Dimmer, Screen Off
1 Advanced Battery Stats:
This application will help you understand the flow of battery charging and the detailed usage of the battery. You will have a fair idea on how your device is being charged and the reason it is being drained so quickly. This app will be able to help you take the appropriate action in order to take care of your device`s battery.
1 Charge Levels:
Most of us are curious to know how we are charging our battery of our android devices; this application will help us to understand the complete and detailed information, along with a charging level graph to show you trends of your charging and battery usage.
2 Graphical Stats:
This is one of the premiere advanced battery statistics apps, this will help you to understand what is happening on your device and it`s battery, i.e. Awake, Screen On, Charging, Wi-Fi, GPS, Bluetooth etc. So, you can save your battery.
#################################################
App Permission:
It gives you a useful and detailed view of all of your installed apps, you can easily identify unwanted apps that might threaten your privacy, and bloatware as well. You can uninstall those unwanted apps.
1. You will have the option to short it out based on the name of the application
2. You will have the option to short it out based on the score (harmful application)
3. Also, you can short by Permissions
#################################################
Battery Alarms:
One of the most important features which is needed for any device, battery alarms can save energy, health and much more.
Battery Alarms Types:
1 Fully Charged
2 Charge Drop below (Set as required)
3 Charge rise above (Set as required)
4 Temperature rise above (Set as required)
5 Health Fails
#################################################
Battery History Data
You can find out yourself what is happening on your battery, i.e. Charging Level, App usage, Data Usage, Consumption.
1 History Data: This helps you to find out detailed battery history 100 to 0% level of battery what happened on 99%, 25% or 32% or anything as you required.
2 Battery Usage Indicator: This lets you understand the specific app and features that consumes more battery, i.e. Screen, android system, Wi-Fi, Apps, FB etc...
3 Charging History: The battery history data has complete and detailed information about the battery including Power, Volt, Screen, Hardware etc...
Smartphone users would love this app, it will allow you to understand how many times you connected the charger and disconnected it, what the charging level is, current battery level, battery volt, weather you used USB or AC in order to charge your device. You can download the data and share it.
#################################################
Battery Stats:
This will give you battery stats and help you understand what is consuming more battery, Audio, GPS, Wi-Fi, 3G etc... Battery Stats include:
1 Chart View
2 Pie View
3 Stat Views
#################################################
CPU Tweaks:
This will increase the CPU speed of your device and help you control what you are utilizing and how much. So you can speed up your devices as you need... Increasing CPU speed will make your device work more quickly. However not enough speed could damage your device. This app allows you to:
1 Tweak
2 CPU
3 Volt
4 Settings
#################################################
Battery Benchmark Testing
We all love to know how many hours of video, audio or browsing we can do with our beloved android device. This app is really meant for the device optimizers.
The test runs until the battery reaches 15% and at that point the test is complete and test results will get displayed.
This utility tool is used to measure the battery statistics on your Android device with respect to Video & Audio playback and Browsing the internet.
This App will allow you to calculate the battery usage of an audio file with a specific bit-rate or a video file with a particular resolution and see the battery consumption rate/minute ratio. You can also check the battery consumption rate for 10 standard URL's with the browser test:
1 Audio
2 Video
3 Browser
#################################################
Game Tweaks:
All Android gamers love to play without frequent hang ups or crashing. We have made a simple Android tweak which can improve your device with complete performance and great gaming experience. Game Teaks include...
1 Stock Rom – Tweak
2 Custom Rom – Tweak
3 Tweak – Uninstaller
How to install the Tweak:
1. If you are still in Stock OS, you need to download the Stock ROM Tweak; we also have Custom ROM Tweak.
2. Once you completed, turn off your device and reboot into Recovery mode (google on more information on recovery mode)
3. Once your device is rebooted into recovery mode, you will find an option called install ZIP from SD card, you need to select that option, this will install the tweak on your device.
4. Once it’s complete, you need to reboot your device. You will feel the improved device performance.
Please note (Tweaks can damage your device, we are not responsible for any damage)
#################################################
Power Saver:
This is a must have for any Android Device out there, you must define it`s worth for yourself. You can save your battery 2+ times with this power saver. It includes...
1 Night Mode
2 Short Intervals
3 Traffic Limit
4 WiFiWhite list
5 Timeout
Mobile Data Controller: It turns off or Turns on as you needed.
#################################################
Sensors Tweaks:
This will help you to understand weather the sensors are working as expected, you can test all the sensors yourself.
#################################################
Sound Tweak:
Music lovers will love this too, you can increase the pre-sets for the type of music you are interested in listening to.
1 Normal, Classical, Dance
2 Flat, Folk, Heavy Metal
3 Hip Hop, Jazz, Pop & Rock
#################################################
Storage Tweak:
This will help you to understand about your device, CPU, RAM, All the hardware information, you can setup the Nand , SD card memory performance as you need, This will make your device perform better.
You can easily find out yourself, how much your system used, Data, Cache, SD card.
#################################################
System Tweak:
Everyone wants their Android phone to be fast without hanging up or crashing, we have made some simple Android Tweaks which can improve your device`s performance and Save the most amount of battery. They are:
1 Stock Rom – Tweak
2 Custom Rom – Tweak
3 Tweak – Uninstaller
=========================
How to install the Tweak:
1. If you are still in Stock OS, you need to download the Stock ROM Tweak; we also have Custom ROM Tweak.
2. Once you completed, turn off your device and reboot into Recovery mode (google on more information on recovery mode)
3. Once you’re rebooted into Recovery mode, you will find an option called “install ZIP from SD card” you need to select that option, this will install the tweak on your device.
4. Once it’s complete, you need to reboot your device. You will feel the improved device performance.
Please note (Tweaks can damage your device; we are not responsible for any damage).
#################################################
Wake lock Activities:
You can easily find out yourself, which app or hardware is consuming a lot of memory and power.
1 Kernel Wake locks,
2 Partial Wake lock,
3 CPU States
Kernel wake locks: These are low level/hardware wake locks from the kernel. We can only reduce these by modifying the kernel or reducing the usage of a certain feature of the kernel. By researching these we can improve the battery consumption and performance of the Kernel.
Partial wake locks: These are wake locks from apps. These can be reduced by uninstalling or disabling features in software. We can talk about those here too, though it shouldn't be the focus as the answer will be "Uninstall/Disable feature X and talk to the app author". Preferably we should talk about partial wake locks from Google services like maps and latitude.
CPU: The numbers reflect the percentage of the time since the last screen update that the CPU spent in each state. The output for this line requires past history, and it is not shown on the first display that is produced.
Other Weak locks: It is important you find out where your major battery consumption is, Deep Sleep, Awake, Screen On, and Wi-Fi on, Wi-Fi running, Data Connection, or Screen Dark.
Process: You can find out which application consumes the most Battery juice. This is a collection of interrelated work tasks and an initiated response to an event that achieves a specific result for the user of the process.
Networks: This will help you to figure out what is happening on your network connection, what the battery power consumption is, the interval etc...
Others depend on the usage of the application and etc...
#################################################
Battery Wipe
This will wipe battery stats data and allow android OS; it will also regenerate the new battery data file
#################################################
Calibrators: You should use this when you think that your battery is acting weird and performing poorly. Here is how to use Battery Calibration:
1) Charge your device until the battery reaches 100%.
2) Click 'Calibrate!' button.
3) Your battery will be calibrated; you can check the battery performance.
We request you drain the battery for next 3 days after you decide to calibrate your device, 100% - 0% battery. When the third day is up charge your device 0% to 100%. Once you complete the process your battery will be calibrated 100% you will feel the improved battery.
#################################################
Advance Battery Cleaner:
This will kill all the running applications and unwanted processes required. This is how your battery will be saved 2+ times in general.
The battery cleaner will start in Boot-up and start working in the background to save the power.
You can also setup an auto cleaning leave: Safe, aggressive and crazy
You can also setup a security leave to: High, Medium & Low.
Click Thanks Button if you want to support my work

I send you an email. For beta tester

Count me in

Niceee, im always interested in new beta apps, especially when its a battery saver ^_^
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Reserved

Live
Any clue about play store live Date ?

jacksparao said:
Any clue about play store live Date ?
Click to expand...
Click to collapse
I need more feedback to hit this application in play store. Please give me some feedback dude.

I send u an email

Application published in Google playstore...

Up
Finally Play store link is up..

Please try the application and give a feedback...

woooow, what are you doing with the system tweak dude? in order to save more juice, i tweak my CPU Max Freq UV to 960 MHZ and doin some tweaks on the CPU Gov. Of course by doing this i sacrifice the performance. But then i installed your system tweaks and then boom! all of the scrolling home screen performance become very fast? this including the three navigation bar delay-in-pressing and application opening also now become fast.
I corious, then i open my cpu governor ...maybe you enter an init.d script on it to change the value, but i see there the value is still the same with my "battery saving mode". then i open the animation and scrolling speed, also still the same setting.
is this tweak really increase performance without sacrifice more battery?

Thanks
I will compare with DU battery. ^^

All the CPU/kernel/system tweaks are available only in the pro version. Can't you make them available in the free version even for a while to test?

Nice music but app crashes. Do you need root?
Galaxy Tab S stock 4.4.2
I am trying it now on my SGS 4, rooted, Wanam Lite, Android 4.4.2

Do you need a tester and Russian translator? PM me if you are

The app started up with music, even though I have my phone set to vibrate only. Please make sure that the app is respecting the audio settings of the phone.

Force close on note 10.1
On the 3rd introduction splash screen can see if i can grab log
Running 4.4.2 stock sammy