Undervolting - worth it? - Galaxy S II Q&A, Help & Troubleshooting

Is it actually worth the effort to undervolt the sgs2? I've already Underclocked to 800mhz and was just wondering if Undervolting saved a visible amount of battery? Cheers.
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Ive read some very involved and lengthy debates in other threads about this. Mind numbing some of it.
I believe UV and UC do save some battery but......
From my experience ive found I get more real world battery savings by freezing unwanted apps and processes, set syncs to be more realistic, and using WiFi, Bluetooth, GPS only when I need them. Also experiment with modems.
I try to get the screen on and awake lines in battery usage to mirror as much as possible. Of course because of syncs, calls, etc there is always a small amount of awake more than screen on.
On LP2 at the moment im getting around 4 to 5 minutes difference over a day reported by bbs and im not choking my device at all.
No UV or UC at all.
Happy with that.
Sent from my GT-I9100 using XDA App

try turkbey rom with phenomenal 2.2 B.E im getting a very good battery life with it

okmijnlp said:
Is it actually worth the effort to undervolt the sgs2? I've already Underclocked to 800mhz and was just wondering if Undervolting saved a visible amount of battery? Cheers.
Sent from my GT-I9100 using XDA App
Click to expand...
Click to collapse
It really depends on how much you undervolt the phone... As seen using the phenomenal kernel (speedmod with undervolting), that it does infact provide better battery life when compared to the standard speedmod kernel...
Sent from my GT-I9100 using Tapatalk

there might be slight increade in your battery life.. but if you dont undervolt it correctly your device may freeze at times with random reboots!
it has happened to me..
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Honestly to me, there isn't much difference when I use SetCPU/VC to undervolt kernels like Siyah and void. Better ways to save battery should be to reduce screen brightness, reduce syncing intervals of apps and turning off GPS/BT/Wifi when not in use.
You should however try Phenomenal. It's undervolting does save some bit of battery as compared to stock Speedmod according to many users. I myself also felt better battery life but I have a feeling it's just a particularly good battery cycle (happens occasionally on every kernel) and it will return to normal, gotta test it for a few more days!

Related

Trigger 3.3 beta

I just installed the new Rom TRIGGER 3.3-beta. This rom is very fast and the GPS is great. I also put on bali 1.8.4. But the battery drains fast. If you guys tried it out, and found a way to save battery can you please let tell us what you did to control it. I know its in beta version and is being tweaked on.
Thank you
Yea Im using the same Rom. Hate to break it to you but the battery life on most all android devices sucks. I have had 5 different android devices and the battery sucked on all of them. didn't matter if it was stock or custom Rom. ether way these devices just have ****ty battery life. You can make it a little better by turning down brightness and messing with other settings but when it comes down to it. it still sucks! Just my 2 cents!
Sent from my SGH-T959 using XDA Premium App
test4vibrant said:
I just installed the new Rom TRIGGER 3.3-beta. This rom is very fast and the GPS is great. I also put on bali 1.8.4. But the battery drains fast. If you guys tried it out, and found a way to save battery can you please let tell us what you did to control it. I know its in beta version and is being tweaked on.
Thank you
Click to expand...
Click to collapse
Did you recondition your battery after flashing? I've had pretty good battery performance with the Bali kernels. I also tend to use the KB1 modem. It seems to give me the best battery. But each phone is a bit individualistic, and what works well for someone may not work as well for next person.
darkside79 said:
Yea Im using the same Rom. Hate to break it to you but the battery life on most all android devices sucks. I have had 5 different android devices and the battery sucked on all of them. didn't matter if it was stock or custom Rom. ether way these devices just have ****ty battery life. You can make it a little better by turning down brightness and messing with other settings but when it comes down to it. it still sucks! Just my 2 cents!
Sent from my SGH-T959 using XDA Premium App
Click to expand...
Click to collapse
This is untrue as I have owned an android device since the G1. The battery did suck on the G1, but by no means does the battery suck on every android device. My guess is you probably never calibrated your battery or you just used it very heavily. There's also the possibility that every rom you tried sucked on those devices. I have consistently gotten a full day or more with Bionix NextGen V2 with the Bali kernel with moderate to heavy usage. It is true if you lower the brightness,turn off wifi,bluetooth and gps when you aren't using it that it will increase your battery life though.
I have reconfigured the battery and have the brightness turned all the way down. Dont use WiFi but battery still sucks compared to other smart phones.
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random
can any of you post a screenie of this rom pls
Battery usage is hard to compare since there are so many variables. In my experience I generally have better battery life when visiting my parents. The area I live in is somewhat of a black hole for signal and I notice more battery drain here with the same rom/kernal setup and similar usage pattern. I believe the weak signal here causes a higher battery drain over all.
Of course this might not apply to your situation but it could be worth considering.
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darkside79 said:
I have reconfigured the battery and have the brightness turned all the way down. Dont use WiFi but battery still sucks compared to other smart phones.
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Click to expand...
Click to collapse
Do you remember to put it on the charger when you go memes
darkside79 said:
I have reconfigured the battery and have the brightness turned all the way down. Dont use WiFi but battery still sucks compared to other smart phones.
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Click to expand...
Click to collapse
I'm not going to argue with you, I'm just going to state what the facts are.
THE BATTERY DOES NOT SUCK, MOST LIKELY IS USER ERROR
Lol. It isn't user error. I think you might just use your phone more heavily than others. One thing you have to realize when comparing the battery life of the phones are a) battery size, b) screen size, c) smartphone or stone age phone, d)**** you've done to the phone including ROM's/Kernals/Apps/Sync.
Personally, on days that I am working, I get about 8-10 hours out of my battery before it dies. When I am not at work I get about 23 hours out of my battery.
what is the major difference between trigger 3.2 and trigger 3.3?
Try using overstock instead, I've had pretty good battery life with it.
Im running trigger3.3 beta with overstock and the battery is great.
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so any new tricks that you guys have found to boost up this rom?
might try this later, i could say the battery on my vibrant is better then the iphone and ive gone through all versions of the iphone.
darkside79 said:
Yea Im using the same Rom. Hate to break it to you but the battery life on most all android devices sucks. I have had 5 different android devices and the battery sucked on all of them. didn't matter if it was stock or custom Rom. ether way these devices just have ****ty battery life. You can make it a little better by turning down brightness and messing with other settings but when it comes down to it. it still sucks! Just my 2 cents!
Click to expand...
Click to collapse
bahaha you must be kidding. like someone else said, it depends on soooo many variables and phones. I was running trigger rom and overstock kernel and was going down about 1-2% battery every hour while screen was off. I listen to pandora every morning for an hour to hour and half and would go down 5%. I've sat on the web watching tv on TV shows stream app for about 1-2 hours and went down like 15-20% when brightness is lowered.
It's all about the brightness, killing apps that enjoy sucking battery life and enjoy run constantly, and running an OC/UV kernel. You can also change it from the usual 3g/H connection down to E (edge) which uses alot less power also. Turn off or turn down auto sync on certain apps like facebook from every 10 minutes down to every few hours.
The screen is the biggest power consumer, so lower that, set it to automatic or all the way down to lowest brightness to save quite a bit of battery when using the phone.
Usually the second largest power consumer (if ur not a huge user of just one certain app) is when the screen is off and the phone is syncing and just running android. the solution is If you can find a decent UV kernel (overstock for android 2.2 was what I was using when on 2.2), you can slow your CPU down. Like on my vibrant I made a profile (on the SetCPU app) to undervolt it from 1,000mhz down to a conservative 400mhz max and 100mhz minimum when screen is off. This is very easy to do. sometimes I'd watch shows on that. I usually left it at a conservative setting and 800mhz and 100mhz min all day long when screen was on, sometimes at 400mhz if i wasnt doing much. It worked wonderfully for me.
Moral of the story, there are plenty of things to make your phones battery last longer than it normally would. The big one probably to get a well known kernel that can UV, then get SetCPU and make a few profiles to make your phone use less power.
BOOM!

[Q] Battery issue

So, over the past few days I've been noticing a few problems with my phone, all of which have to do with the battery. After installing fauxes OC 1.3ghz kernel I noticed a drop in usages before the phone died, that's a given. So i flashed his enhanced 1ghz kernel instead, but still notice bad battery drops when im using it. It doesn't drop 40% over night or anything, only about 6%. But, if i turn the phone off and back on the % jumps up. Sometimes 20%. Is there anything wrong with the battery, or the phone?
Try calibrating the battery.
i haven't doe that since my first phone. How would i go about doing that.
chaous2000 said:
i haven't doe that since my first phone. How would i go about doing that.
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?t=1198333&highlight=BATTERY+CALIBRATION
Also, with faux's kernels check your CPU clocking with setCPU, or something similar. Somtimes it will lock at the max clock speed which will contribute to quick battery drain. I'm on his stock enhanced and getting close to 2 days with moderate use.
How do you get two days of battery?! Thar's intense! I haven't been able to get past the 15 or 16 hours with the stock kernel, neither with faux's stock enhanced! Do you usually drop your cpu speed while it's in your pocket or something? Or do I have a bad battery? Because I've been really concerned about this battery not lasting the monster time it is supposed to last...
ghost_og said:
http://forum.xda-developers.com/showthread.php?t=1198333&highlight=BATTERY+CALIBRATION
Also, with faux's kernels check your CPU clocking with setCPU, or something similar. Somtimes it will lock at the max clock speed which will contribute to quick battery drain. I'm on his stock enhanced and getting close to 2 days with moderate use.
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Click to collapse
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jeffmena93 said:
How do you get two days of battery?! Thar's intense! I haven't been able to get past the 15 or 16 hours with the stock kernel, neither with faux's stock enhanced! Do you usually drop your cpu speed while it's in your pocket or something? Or do I have a bad battery? Because I've been really concerned about this battery not lasting the monster time it is supposed to last...
Click to expand...
Click to collapse
I have uv and profiles set up in setCPU. I'm actually a little amazed by how good it's been since re-installing all of my mods (went back to stock recovery due to some issues).
If you're experience battery jumps then install the fix noted in the calibration instructions. Most likely you're battery isn't charging to full capacity, so that coupled with the improperly reported stats make it seem much worse than it is. The process is a bit time consuming, but it did work for me.
Little confused with my battery and SetCPU sitll
ghost_og said:
I have uv and profiles set up in setCPU. I'm actually a little amazed by how good it's been since re-installing all of my mods (went back to stock recovery due to some issues).
If you're experience battery jumps then install the fix noted in the calibration instructions. Most likely you're battery isn't charging to full capacity, so that coupled with the improperly reported stats make it seem much worse than it is. The process is a bit time consuming, but it did work for me.
Click to expand...
Click to collapse
Well I have Alien #4 custom rom and it actually has the battery fix so it shows the 1% increase/decrease and I recently did a battery calibration by waiting til it got to 100% with an app that deletes the battery stats as if you would do with recovery mode. I also have CWM recovery and everything doing fine there, my kernel is now Faux's 1.3GHz but limited with SetCPU to 1GHz, and I don't know if it'll get me a better battery life just that kernel. What do you mean by uv? And I have profiles set for when the screen is off and when its charging but nothing else apart from the 1GHz setting. Is it normal that I only have 2 scaling options? Powersave and performace?
Thank you. I will be trying this tomorrow when I have the huge amount of time needed to complete this. And uv means under volt.
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Thanks to you! I really appreciate it. I will be waiting for your response and maybe you could tell me if it lasts longer with the 1.3GHz ir the 1GHz. Thanks!!
chaous2000 said:
Thank you. I will be trying this tomorrow when I have the huge amount of time needed to complete this. And uv means under volt.
Sent from my atrix using xda
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Battery Life Tips?

I was wondering if any of you people could be kind enough to give me some more battery tips for my new SGS3.
I'm getting around 4-5% / hour battery drain on standby. I have 2 GMail accounts on sync.
Here's what I've done:
-> Removed Kik Messenger because it was commandeering an outrageous amount of Wakelock Time (about 5-11% of Wakelock Time in 4-7 hours).
-> Installed Omega v5.0 (latest).
-> Still on Stock Kernel
-> Changed my WiFi Policy to "Only when Plugged in"
Turn off automatic synchronizatikn for fcbk email or other accounts.
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Totòòò said:
Turn off automatic synchronizatikn for fcbk email or other accounts.
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Click to expand...
Click to collapse
What does Facebook sync anyway? I always thought it was just once to get the contact pictures. I will disable it now
I've been using Foxhound and Siyah kernel, super combo. I can honestly say it's the best performance/battery life on any android device I've used, 6+ hours of screen on consistently - wifi/gps on, 3gmails autosyncing, autobrightness, 1hr>calls, 50+texts, light browsing, redditt, Google Music... Battery life is so subjective though depending on your apps, usage, cell signal, etc.
Experiment! All things being equal, in my experience its the kernels that make the biggest difference in significant battery life improvements, with the exception of stock roms vs. AOSP/AOKP, battery life doesn't differ very much minus bloatware in the various roms. And if you're a flashaholic like me you'll actually have to wait a few charge cycles to get an accurate representation of battery performance for your phone.
kchino said:
I've been using Foxhound and Siyah kernel, super combo. I can honestly say it's the best performance/battery life on any android device I've used, 6+ hours of screen on consistently - wifi/gps on, 3gmails autosyncing, autobrightness, 1hr>calls, 50+texts, light browsing, redditt, Google Music... Battery life is so subjective though depending on your apps, usage, cell signal, etc.
Experiment! All things being equal, in my experience its the kernels that make the biggest difference in significant battery life improvements, with the exception of stock roms vs. AOSP/AOKP, battery life doesn't differ very much minus bloatware in the various roms. And if you're a flashaholic like me you'll actually have to wait a few charge cycles to get an accurate representation of battery performance for your phone.
Click to expand...
Click to collapse
Thanks for the big post! ^v^. I am going to flash the SiyahKernel. But after turning Facebook Sync and the Wifi Policy (which I found out about today).
My battery is at 93% at 2h 01m 05s (also my battery goes down to 99% as soon as I take it off the charger). So thats 6% in 2 hours which is 3% / hour ! Getting there ^^
Apparently going to 99% immediatelly after the charger is normal for Samsung devices. So I wouldn't count that as reduction.
I dont use aftermarket kernels and roms, I have disabled a few stock programs I do not use and get a very decent battery with the 2x battery saver. I had already ordered a secondary battery which is on its way actually as well, so ill be covered from there on
sent with SGS3
Annie the Eagle said:
Thanks for the big post! ^v^. I am going to flash the SiyahKernel. But after turning Facebook Sync and the Wifi Policy (which I found out about today).
My battery is at 93% at 2h 01m 05s (also my battery goes down to 99% as soon as I take it off the charger). So thats 6% in 2 hours which is 3% / hour ! Getting there ^^
Click to expand...
Click to collapse
99% right off the charger is a feature .
Undervolting is an option as well.
kchino said:
99% right off the charger is a feature .
Undervolting is an option as well.
Click to expand...
Click to collapse
Oh my! Great feature! Do you know of a guide on how to do that, or is that just a fancy term for "underclocking" ^v^
As I am still on stock kernel I am obviously still on stock speeds but I'm going to flash SiyahKernel after I finish uploading photos of my A77
Annie the Eagle said:
Oh my! Great feature! Do you know of a guide on how to do that, or is that just a fancy term for "underclocking" ^v^
As I am still on stock kernel I am obviously still on stock speeds but I'm going to flash SiyahKernel after I finish uploading photos of my A77
Click to expand...
Click to collapse
I don't think there are any OC/UV guides in the SGS3 forums but you could search XDA to acquaint yourself, there many writeups on the subject. Make sure have ADB and are familiar with it before so you can recover if necessary from any mishaps. Every processor has a different tolerance to OC/UV so there isn't a tried and true method of implementing it you just have to use trial and error.
I won't get in to it too much but undervolting and underclocking are related but different. Undervolting effectively ask the processor to run with less power from the battery at a specific clock speed or frequency. Underclocking would be reducing the overall frequency of the processor depending on the load. They can be used independently or together.
kchino said:
I don't think there are any OC/UV guides in the SGS3 forums but you could search XDA to acquaint yourself, there many writeups on the subject. Make sure have ADB and are familiar with it before so you can recover if necessary from any mishaps. Every processor has a different tolerance to OC/UV so there isn't a tried and true method of implementing it you just have to use trial and error.
I won't get in to it too much but undervolting and underclocking are related but different. Undervolting effectively ask the processor to run with less power from the battery at a specific clock speed or frequency. Underclocking would be reducing the overall frequency of the processor depending on the load. They can be used independently or together.
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Click to collapse
Ah thanks a-lot. Would creating a profile to limit the CPU to 300 MHz MAX during screen off save battery also?
I have SetCPU installed and have flashed to SiyahKernel now but haven't fiddled with it yet.
Annie the Eagle said:
Ah thanks a-lot. Would creating a profile to limit the CPU to 300 MHz MAX during screen off save battery also?
I have SetCPU installed and have flashed to SiyahKernel now but haven't fiddled with it yet.
Click to expand...
Click to collapse
Download extweaks from the market instead to configure Siyah. Extweaks hasn't been optimized for the SGS3 yet but it works better than SetCPU with Siyah, it also has descriptions of what each setting does.
If you aren't a gamer you could even toggle two of the cores off, definitely will increase your battery without much if any performance hit in real usage.

Galaxy S2 bad battery life on every rom (even stock)

Hi,
I've been flashing roms onto my phone for months now and what I've realised is that the battery life is always awful. I hardly ever get past 10 hours, with just 1 hour of screen on time as my battery drains in stand by. I've tried cm7, cm9, perfect galaxy, miui, stock and many more, but my battery life always seems to be the same. Currently I'm running cmiui (latest version) and still battery is draining very fast. I read about people having amazing battery life on a daily basis.
My current battery life drains by 1% every 2-3 minutes of screen on time and about 5% of drain when in deep sleep or stand by an hour, sometimes even more. I use betterbatterystats, cpuspy and gsapp to monitor my battery but nothing suspicious occurs. Usually my 'awake' time tends to be 50% higher than my screen on time according to betterbatterystats, however all the wake locks tend to be kernel related. Changing kernel doesn't change this either. I've literally tried everything, installing several kernels, modems and calibrating my battery every time I flash a new rom.
Also what I realised is that my phone frequently overheats near the camera and even sometimes reaches 50°c.
I would appreciate it if anyone could help me on this topic. It is really frustrating that I cannot get through a day of even light use of my phone, which makes it almost unusable as I'm always concerned about my battery. I've also tried several batteries, so the problem doesn't lie with the battery.
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MikeIliescu said:
Hi,
I've been flashing roms onto my phone for months now and what I've realised is that the battery life is always awful. I hardly ever get past 10 hours, with just 1 hour of screen on time as my battery drains in stand by. I've tried cm7, cm9, perfect galaxy, miui, stock and many more, but my battery life always seems to be the same. Currently I'm running cmiui (latest version) and still battery is draining very fast. I read about people having amazing battery life on a daily basis.
My current battery life drains by 1% every 2-3 minutes of screen on time and about 5% of drain when in deep sleep or stand by an hour, sometimes even more. I use betterbatterystats, cpuspy and gsapp to monitor my battery but nothing suspicious occurs. Usually my 'awake' time tends to be 50% higher than my screen on time according to betterbatterystats, however all the wake locks tend to be kernel related. Changing kernel doesn't change this either. I've literally tried everything, installing several kernels, modems and calibrating my battery every time I flash a new rom.
Also what I realised is that my phone frequently overheats near the camera and even sometimes reaches 50°c.
I would appreciate it if anyone could help me on this topic. It is really frustrating that I cannot get through a day of even light use of my phone, which makes it almost unusable as I'm always concerned about my battery. I've also tried several batteries, so the problem doesn't lie with the battery.
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Click to expand...
Click to collapse
Everytime you install a new Rom/Kernel you have to wait for it to settle down (About 2 Charging cycles). If I flash a new Rom to my device Batterydrain is very high too at the beginning. What you can do is install a Rom and a kernel which supports undervolting and underclocking.
I use Resurrection Remix ICS 2.6.1 with the Siyah 3.5.2 Kernel with this Voltage/Clock settings (LESS AGGRESSIVE UV VALUES with -50mv and not -75mv undervolting):
http://forum.xda-developers.com/showpost.php?p=26755476&postcount=850
With this settings I get 16 - 18 hours easily and with about 2 1/2 -3 1/2 hours of screentime and also about over 4 hours of listening music and doing other stuff of course.
Everytime you undervolt/underclock make a Nandroid backup!
Thanks, I've heard about the battery charging cycle before, I'm new to cmiui, flashed it yesterday but I've had cm9 on for about two months and the battery life was horrendous. I will try the undervolting and see how that goes
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Strange, I am on stock and can make almost whole day with 3-4h screen time. Sounds like some issue either with battery or with the phone.
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get a 2000 mha battery over ebay
I have been used 2000mah battery, miui 2.8.3 + siyah 4.0.1 kernel, no serious battery life issue :good:
I have a 1800mah battery, its actually not that much better than the stock battery, but doesn't the 2000mah add extra thickness?
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Yes it does.
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MikeIliescu said:
I have a 1800mah battery, its actually not that much better than the stock battery, but doesn't the 2000mah add extra thickness?
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Click to collapse
Yes but it`s no thicker than your speaker part of the phone.
I'll have a look at it, I've re calibrated my battery this morning and ismt half bad so far. Its 9 o clock now and sill have 38% left with about 1.5h of screen on time, phones been unplugged for about 10 hours. I've used the undervolt setting as suggested but still loose about 4% of battery in stand by each hour. On comparison my mums iPhone 3gs looses about 1% every 3 hours. Surely the android battery isn't that much worse
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If it occurs with every rom you have could it be app related, wiggets or syncing too frequently?
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That's what I thought but I've analysed my apps with betterbatterystats and gsapp, nothing suspicious came up and wakelocks are always kernel related. I've tried several kernels as well
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MikeIliescu said:
That's what I thought but I've analysed my apps with betterbatterystats and gsapp, nothing suspicious came up and wakelocks are always kernel related. I've tried several kernels as well
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Click to expand...
Click to collapse
Get cpu spy from the play store to see if your device is deep sleeping. Also, you can try 1900mah anker battery. I got two and a charger off eBay for $25 can. Definitely a good deal
Sent from my Nexus 7 using xda premium
Mysterious indeed, all I can suggest is what I would try which is to give a custom rom call slim rom a go after full wipes and format system. Its a stripped down rom and always gives good battery life as it's so lean. Hope you find a fix soon all the best.
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maybe your battery is bad i bought a great 2500mah battery on ebay http://www.ebay.com/itm/2500mAh-Ext...ccessories&hash=item4ab6494de0#ht_2481wt_1163
that combined with the rom OLLO MONSTER gives me awesome battery life
I might have to invest in a new battery. As I said before I've upgraded to a 1800mah battery and using that but the difference is minimal. Also I have CPU spy and it goes into deep sleep quite a bit, awake time however according to betterbatteystats tends to be about 30-40% higher than screen on time. And i'll try the suggested rom after I've given this one a few more days on the undervolting
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MikeIliescu said:
I might have to invest in a new battery. As I said before I've upgraded to a 1800mah battery and using that but the difference is minimal. Also I have CPU spy and it goes into deep sleep quite a bit, awake time however according to betterbatteystats tends to be about 30-40% higher than screen on time. And i'll try the suggested rom after I've given this one a few more days on the undervolting
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Click to expand...
Click to collapse
For BBS, anything over 1% is something that needs to be fixed. Keep in mind you need a good sample time (like over 5hrs)
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MikeIliescu said:
I might have to invest in a new battery. As I said before I've upgraded to a 1800mah battery and using that but the difference is minimal. Also I have CPU spy and it goes into deep sleep quite a bit, awake time however according to betterbatteystats tends to be about 30-40% higher than screen on time. And i'll try the suggested rom after I've given this one a few more days on the undervolting
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Click to collapse
Hmm looks normal, I would get the 2000 mah Samsung Original Battery because 10 hours and already on 38% battery is not so good in my opinion.
kilometers4 said:
For BBS, anything over 1% is something that needs to be fixed. Keep in mind you need a good sample time (like over 5hrs)
Sent from my Nexus 7 using xda premium
Click to expand...
Click to collapse
I've taken a few screenshots of bbs, somehow the kernel wake lock is completely empty which is odd
Also I only need the battery to last about 15h with 3-4h of screen on time to get me through the day!
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MikeIliescu said:
I've taken a few screenshots of bbs, somehow the kernel wake lock is completely empty which is odd
Also I only need the battery to last about 15h with 3-4h of screen on time to get me through the day!
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Click to expand...
Click to collapse
Well that looks decent. Do you have key press sounds and lock screen sounds off? that could cause audioout_1 wakelocks
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Recommendations for Better Battery Life

The Rez I'm using now is an Asurion replacement. Before, this thing was saving battery like a champ. Used to get a full 24 hours or more plus 2 hours screen on time.
Now it's just terrible. I'm 34% on battery after less than 5 hours off the charger with far less than an hour of screen on time.
I'm running Snuzzo's 2.2 funky kernel and Newt's One XxX 6.0.2 rom, S-OFF. CPU is tweaked, running dancedance governor and SIO. 386 MHz to 1 GHz (or whatever they exactly are) when in use. Various profiles are set to run lower, as ive always done.
I'd appreciatw the help, guys. Thanks.
Sent from my ADR6425LVW using xda app-developers app
check with gsam what drain the battery
Proz00 said:
check with gsam what drain the battery
Click to expand...
Click to collapse
Yes, what he said. I'm running Newt's with ExtraFunky 2c and don't have any problems. In the past when my battery life suddenly nose dived, it turned out to be some app that decided to keep wakelock for some unknown reason. Check recently updated apps.
Yeah probably an app or service running in the background.
Turn off GPS and blue tooth when not in use
Use WiFi when you can
Turn off Google Now
Turn off location history and location reporting in Google maps settings
Make sure you have no widgets constantly refreshing
Increase the times between sync for Gmail, Facebook et al
Try running a more conservative cpu governor supported by your kernel, such as Wheatley or Intellidemand.
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I don't really use Bluetooth that often and keep it off, and gps is always off. And got rid of Google now for the regular Google search. Only the clock widget is running. Though, I should spacing sync times.
Uninstalling some apps seems to have helped for the most part (which makes sense, as I just recently restored a nand backup). But, it's still not as good as it was. I guess it's best to just keep tinkering at this point.
Thanks
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Well for example, I use fancy widgets for my clock/weather. If you use a program like better battery stats (search xda for the free version), you will see fancy widgets causing the device to wake up more than almost anything else.
That's when you can do stuff like spacing out weather sync to 3 hours, prefer sync over wifi, and maybe even setting a default fixed location for your weather.
But with the kind of battery loss you described, something more than a widget is grabbing power. Make sure you are on auto brightness, btw.
I also use a program called system panel to see what all background services are running. For example, you would be surprised to see services for Google Talk, social apps, even some games running in the background. Then you can use titanium backup to freeze them or un install.
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I've been using Gsam, but what I see use up more resources than anything is the kernel I typically uninstall anything I do not use. Stuff sitting higher up are things like the Kernel, Android System, Camera, Wallpaper Lockscreen and Android Core Apps. That's everything that goes 1% or higher. Everything is under 10%.
And, surprisingly, wake times aren't that high. Typically, screen on time is about equal to the awake time, so all seems well on that end.
I think removing and re-installing apps that were using excessive amounts of energy has probably done the trick, though.
What tuner app do you use?
You might just try running Intellidemand with no underclocking and see how that works for you.
The problem with underclocking is, if you don't give an app enough juice it will take longer to complete a task and the cpu will run longer.
Look closely at your deep sleep times. I barely lose any battery overnight bc I run Wheatley underclocked to 1242 for screen off only.
Glad removing the apps helped some, those buggers.
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I think I'm in a better area now.
I'm using setCPU (always has been reliable for me in the past). I'm running 385-1512 with dancedance and noop. I think this is where I need to be. It's kind I'd feeling like it used to again.
I'm going to try Funky 2.3 now.
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Screen On time is not that great for 8 pct battery left. But it could have been bc you were listening to music for part of that time. Otherwise your screen shot looks normal, good total life.
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I'm getting pretty crazy battery reports using the newest funky kernel for cm10. I could have the phone off charger for hours and it still reports 100% battery. Granted I wasn't using the phone that much, if at all,but to still see 100% battery after that long even idling is weird. Using dancrdance governer with deadline scheduler. It doesn't take much tho to get my battery draining. After about 4-6 hours of use (playing music, games, looking on forums and such) I'm down to about 25% or less. Any suggestions?
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Oooooh, yes. I listen to a lot of music during the day. That day, though, was while listening to less than usual. My deal is going screen on and watching the battery drain 2-4 percent in a 2-5 minute time frame. I understand that the screen is heavy on the battery, but it's never really been like this before. I'm sure I'll have this figured out sometime soon.
What kernel are you on? You might look into undervolting. For example, funky kernel is undervolted by 50 by default. Ermahgerd isn't undervolted by default but supports it. You can safely go down as many as 75-100 without stability issues. It does dramatically reduce battery drain.
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I'm using the Tonked world edition with the kernel that came with it and I get great battery life. About 34 hours with 6+ hours of talk time and just under 4 hours of screen time with Bluetooth wifi and mobile data (4g turned off) always on. And almost 3 days with light use. Does help to have the HTC extended battery.
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czach5932 said:
I'm using the Tonked world edition with the kernel that came with it and I get great battery life.
Does help to have the HTC extended battery.
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Click to expand...
Click to collapse
It's been a while since I last used 3.6, but why not. And yeah, I bet it does. They're just getting harder to find and more expensive.
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brenuga said:
What kernel are you on?
Click to expand...
Click to collapse
I'm on funky 2.3. I understand that underclocking can help a lot, though.
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What do you guys think about this battery stat pic? Is this good? I've been running Bluetooth while streaming Pandora almost non stop at work. Stats are from about 11:30am to now, at 4:15pm here. Phone on time is different because I was also messing with settings that required me to reboot a few times.
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I am quoting Neo, but here are extreme settings for maximum battery life.
A little something I suggested to someone earlier on the fly:
*Don't use auto brightness and keep your screen brightness low but not too low that causes you to strain.
*Undervolt all frequencies by -50mv using kernel tuner.
*Underclock the rom to 1,080mhz
*Change I/O scheduler to noop
*Change governor to Lionheart (if you have it) or DanceDance.
*Disable all haptic feedback including soft keys and keyboard
*Disable data or account sync overnight (unless you plug your phone into a charger over night)
*Enable 16-bit transparency
*Disable dithering
*Disable HW overlays
*Disable all animations
*Ensure GPS, WiFi, and Bluetooth are turned off when not in use
*Use WiFi where available instead of 4G
*Disable weather refreshing and leave it to manual refresh
*Disable wallpaper scrolling and animations if possible in the launcher
That's all I can think of at the moment.
-Neo
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Again, all the credit goes to Neo here, I have used these settings and they seem to help quite a bit
Since you have tested these settings provided by Neo, what is your battery life like? Better then what I have shown above?
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Drop your screen off profiles. They will hurt more than help. I already have max screen off cpu clock in place set to 432mhz.

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