Database Develop

[Q] Awful Battery Life - 5 Hours and 5% left. OG Droid.

So just inherited my dads OG Droid. Currently rooted and runs Steel Droid (Mod Version 9000) and 2.6.32.9_RZ Kernel.
Phone is overclocked to 1GHz (125/1000 ONDEMAND).
Like the title says, the phone gets about 5 hours and then hit's 5% and keeps asking me to charge. If I charge it overnight and unplug it when it's 100%, it'll hit 90% idling (while I sleep) about 3 hours later.
Running Programs:
DSPManager
Words Free
Facebook
3D Digital Weather Cloc
News & Weather
3G Watchdog
Videos
SoundHound
Pandora
Temp+CPU V2
Now out of all the running apps, Pandora, Soundhound, News & Weather, 3G Watchdog, Temp+CPU, 3D Digital Clock are all widgets. Temp+CPU and 3D Digital clock are the only ones that actually run, the rest are just there in case I want to use them.
These stats today are from using Pandora for about an hour over Wifi.
Any ideas? Phone runs fine most of the time but I have seen the occasional lag where you have to click something 10 times before it opens.

I used to have a pretty big problem with battery life too, but even though I think they are somewhat silly and annoying the Easy Battery Saver app helped me quite a bit.
Wifi and using the speakers are heavy on battery life. Not sure how much difference it will make but try consolidating your widgets and app shortcuts to as few screens as possible.
Also your CPU governor might be set to something that lets the phone hog through anything at the sacrifice of battery. When i set my CPU to Performance my phone runs like a boss, while setting it to battery saver I get a little more lag but more battery, obviously. Not sure how/if your ROM will let you change that but it's something to look into.

I got it set to On Demand which might be the issue. The kernel is a low voltage kernel. How do ultra low voltage kernels run?
I did a battery calibration, downloaded Advanced Task Killer (Battery saver didn't work well, I'd always have an issue with 3G not activating) and got rid of all my widgets. Currently charging it up completely, I'll check it out tomorrow.
So the title is incorrect, it says 5 hours and 5% left. I checked the battery info at 5%. It said 4hr 4x min. About 10 minutes later it shut off so I didn't even get 5 hours to a full charge.
I don't have high expectations but coming from an Alias 2 that had the extended battery (I'd get a week of battery with my use), this is pretty disappointing.

Well I can tell you now, ondemand is NOT good for battery, what that governor does is make it so the CPU will go from MIN to MAX speed slots depending on what the phone needs, AFAIK it doesn't scale with need, it just goes to max. So your phones CPU was running at max most the time which kills battery.
Can't say anything about your ROM, but I use simply stunning 5.6 http://www.droidforums.net/forum/chevyno1/177728-ss-5-6-2-3-7-incl-1-battery-other-goodies.html Which, with his low voltage 1ghz kernel set to the smartass governor, I get anywhere from 8-14 hours of battery life depending on use. Using ultra low voltage kernels depend on your phone, some phones have trouble overclocking to 800mhz mid-voltage (mid-voltage is considered to be the most stable, but use the most battery), others can overclock to 1.25ghz ultra-low voltage, which is very rare. I would say try out all the different voltage kernels and see which one works best with your phone.
Also task killer = MAJOR MAJOR No no! The task killer will kill the apps, and the android OS will restart them, using more CPU time and making the battery actually not last as long, I would recommend learning how to use the supercharger script http://forum.xda-developers.com/showthread.php?t=991276
Can't say much about the majority of programs you have running, but I've found facebook does not like to play nice with the Droid, also, why use the 3D clock when the Droid comes with a built in-clock app? Pandora uses a lot of battery, so running it w/ the ondemand governor is probably what hurt your battery there.
Not many Droid users left out there, but I was and still am an extremely avid Droid user, so if you have any more questions just shoot me a PM and I'll help as much as I can.

Thanks! I got rid of all my widgets and installed Chevy's ultra low voltage 1.1GHz kernel on smartass. I lost 20% battery pretty fast but let's see how long it runs. I've had no force close issues so far. I'm a bit tempted to go to 1.2GHz ulv.
How much does the ROM have to do with battery life? I really love this ROM and it's interface. I thought the battery life really only had to do with kernels.
I also got rid of the clock widget and put a default clock widget. What's the built in Android one? Is that the "Analog Clock"?
Sorry for all these questions, I'm pretty new to Android. Only had this for 2 days (~8-10 recharges...)

Its fine, better to question and learn then to just get mad and over it, and Roms have everything to do with battery, they are just like kernels, some work AMAZING on some phones, while others can destroy battery life.
Like my rom, I found the perfect one for my phone, I get 8- (been thinking about it more) 20 hours of battery life on mine and it has pretty amazing performance too with the occasional hiccup.
And I thought you had the clock app installed for an alarm, not for a widget, my bad. I don't use a clock widget so I wouldn't know.. Also, I've found its not very good to run many widgets on the Droid, as it has limited memory and can only handle so much.

Well I got sick of it and reflashed the entire ROM. CPU governer is set to ONDEMAND 125/1000. Only*widgets I have are a simple clock (like the iPhone lock screen) and power control. Gonna see how it goes. So far so good but I'm saying that because I didn't loose 20% overnight. If I can clear the day, I'm good.
googlelover, what CPU Governer did you find to work the best with your phone?

I have been an Android owner for a while now, with the Droid being my first. Until recently battery life had always been an issue for me. Undervolting has never had an effect over a 20% improvement. And this is only when it's in deep sleep. Otherwise, in very general terms, undervolting can require a higher current aka worse battery life if you use your phone a lot. With undervolting comes the risk of data corruption in your phones memory and SD Card. What really kills your phone is screen on time, wakelocks, CPU overclock, and signal quality.
The last you have no control of. But if you're overclocking 1GHz or higher you have to realize that's almost twice the manufactured clock speed. As far as wakelocks, this is when something keeps your phone from going into a low power state. This can happen because of a rogue app, a buggy ROM, or having too many widgets. I ran into a ROM a while ago on my Fascinate that would stay awake if you had GPS enabled. The best you can do with your display power usage is to keep your brightness down. Hope this explains a few things

have the same issue

core2kid said:
Well I got sick of it and reflashed the entire ROM. CPU governer is set to ONDEMAND 125/1000. Only*widgets I have are a simple clock (like the iPhone lock screen) and power control. Gonna see how it goes. So far so good but I'm saying that because I didn't loose 20% overnight. If I can clear the day, I'm good.
googlelover, what CPU Governer did you find to work the best with your phone?
Click to expand...
Click to collapse
I already told you, the smartass governor, and like I said before, ondemand is not a good governor in my opinion. There are way to many factors in battery life to have anyone else be able to truly help you with it, all our phones are different and it really just takes time switching kernels, switching ROMs, etc to find what works with your phone

Sorry googlelover, I forgot you already said that.
So update guys. I've been going a day (so like 18 hours) of use after which it finally hits the 15% warning.
What I did:
Basically I reflashed the ROM and started from scratch. Before reflashing, I wiped the user data/cache/davick cache etc at least twice just to make sure it was really wiped.
I reflashed SteelDroid 9.0 with the default chevyno1 lv 1ghz kernel and gave it a go with just a simple clock widget. Worked well. One by one, I'm starting to install applications until I can figure out what was draining the battery fast. So far, so good. If I can get 18 hours on a 2 year old battery, I'm going to be doing fine with my extended battery.
One thing I did notice was that the phone back by the camera (where CPU is) isn't getting as hot as it used to. Makes me think that the phone was at a high clock speed in sleep. Another issue may have been my CPU temp/speed monitor. It was probably poling the CPU stats every second which made the phone increase the CPU speed because it sensed activity.
Try out the ROM I'm using. I absolutely love it. The interface is phenomenal and it runs very well.
htp://w w w . d r o i d f o r u m s . n e t /forum/steel-droid/148060-release-steel-droid-9-0-gingerbread-11-17-2011-a.html
(remove the spaces to see it, I wasn't able to post links normally because I don't have enough overall posts).
There's probably other ROMS that run better like the one googlelover is using, but I can't use the default Android interface anymore after using this.

core2kid said:
Sorry googlelover, I forgot you already said that.
So update guys. I've been going a day (so like 18 hours) of use after which it finally hits the 15% warning.
What I did:
Basically I reflashed the ROM and started from scratch. Before reflashing, I wiped the user data/cache/davick cache etc at least twice just to make sure it was really wiped.
I reflashed SteelDroid 9.0 with the default chevyno1 lv 1ghz kernel and gave it a go with just a simple clock widget. Worked well. One by one, I'm starting to install applications until I can figure out what was draining the battery fast. So far, so good. If I can get 18 hours on a 2 year old battery, I'm going to be doing fine with my extended battery.
One thing I did notice was that the phone back by the camera (where CPU is) isn't getting as hot as it used to. Makes me think that the phone was at a high clock speed in sleep. Another issue may have been my CPU temp/speed monitor. It was probably poling the CPU stats every second which made the phone increase the CPU speed because it sensed activity.
Try out the ROM I'm using. I absolutely love it. The interface is phenomenal and it runs very well.
htp://w w w . d r o i d f o r u m s . n e t /forum/steel-droid/148060-release-steel-droid-9-0-gingerbread-11-17-2011-a.html
(remove the spaces to see it, I wasn't able to post links normally because I don't have enough overall posts).
There's probably other ROMS that run better like the one googlelover is using, but I can't use the default Android interface anymore after using this.
Click to expand...
Click to collapse
Don't forget not many roms have the default android interface, many have themes to completely change the look, if your happy where your phone is, great! But if you ever feel like your phone is slowing down again, I'd still recommend looking around and flashing some different roms.

Thanks, I'll keep that in mind. I'm only using this phone for another couple months. I'll be getting the Droid 4 when it comes out. Looks like a really nice phone.

how much does the governerr really effect the battary?

im just wondering how much does the governerr effect battary life? i changed from ondemand to smartass2 and im not sure i see any diffrent...
and im scheduales which one is best for multitasking and which is for when playing games?
and should i change the governerr setting?
i also read that sleep_ideal_frequency should be 200 and not 100 beacuse 100 wastes more or something like that, is that true?
using galaxy i9000 semaphore kernal jb

bump

I use Performance governor all the time for 3 months now, battery life is same as on demand, smartass v2 or any other governor, except my phone lags much rarely than on any other govenor. For those that dont know, CPU of PC, your phone, calculator or anything else always works at 100% of its frequency even it has no work to do (Let's take for example your PC, even cpu usage is 5%, CPU still works at full frequency, the same works for your phone), so to me there is no point of any other governor except for Performance. If you have problem with battery life, it's mostly your screen. When I drain out my battery, my battery mostly get drained by screen (70-90%), I use about 0-30% of brightness always. Screen of 60-100% brightness will probably drain your phone's battery in 2-3 hours.

Lavoslav said:
I use Performance governor all the time for 3 months now, battery life is same as on demand, smartass v2 or any other governor, except my phone lags much rarely than on any other govenor. For those that dont know, CPU of PC, your phone, calculator or anything else always works at 100% of its frequency even it has no work to do (Let's take for example your PC, even cpu usage is 5%, CPU still works at full frequency, the same works for your phone), so to me there is no point of any other governor except for Performance. If you have problem with battery life, it's mostly your screen. When I drain out my battery, my battery mostly get drained by screen (70-90%), I use about 0-30% of brightness always. Screen of 60-100% brightness will probably drain your phone's battery in 2-3 hours.
Click to expand...
Click to collapse
This is so wrong its a pain to read.:banghead: Why do we have the max and min frequency options in the semaphore app? Why do we have "Max Performance" and "Max Battery" power settings on laptops?
Sent from my GT-I9000

There was a thread some while ago that concluded in OnDemand and Performance being to two to give longest battery life and best performance.
I don't have specifics or even a link, but the thread was about schedulers and governors and which went together for best performance and battery life. I'm sure it's google'able
Sent from my GT-I9000 using xda premium

i found that thread but im just wondering how much battary life is wasted if i prefer preformence?
lets say i use smarassv2 since its faster will my phone drain lets say insted 20%\hour - 22%\hour? or is it more then that?

itzikd1 said:
i found that thread but im just wondering how much battary life is wasted if i prefer preformence?
lets say i use smarassv2 since its faster will my phone drain lets say insted 20%\hour - 22%\hour? or is it more then that?
Click to expand...
Click to collapse
maybe you can try and tell us

There should be a significant impact regarding battery life when using Performance for example. But it also depends on what you are used to. If you play games all the time or do heavy tasks, the governor will kick the CPU to 100% all the time anyway. But if you mostly surf on the Internet or read texts there's no need to let the CPU go rampage.
Oh and Btw: Modern CPUs in notebooks or computers in general clock themselves down as well when they're idle.
Sent from my Gameboy Color

BlueFlame4 said:
There should be a significant impact regarding battery life when using Performance for example. But it also depends on what you are used to. If you play games all the time or do heavy tasks, the governor will kick the CPU to 100% all the time anyway. But if you mostly surf on the Internet or read texts there's no need to let the CPU go rampage.
Oh and Btw: Modern CPUs in notebooks or computers in general clock themselves down as well when they're idle.
Sent from my Gameboy Color
Click to expand...
Click to collapse
I do use internet mostly so what will be the most effective governerr any idea?

itzikd1 said:
I do use internet mostly so what will be the most effective governerr any idea?
Click to expand...
Click to collapse
Try OnDemand or SmartAssV2.

[Discussion] Nexus 6 Underclocking

I know that on all my phones I underclock them to be able to conserve as much battery life as I can. I was wanting to know how many other people underclock this device and what are the setups they are using? I, for example, am using LiquidSmooth v4 Nightly 12/23 and Sensei Kernel R26.1 underclocked at a max frequency of 1.1GHz. I have CPU hotplugging enabled and only use 2 cores.

What's your SOT with that set up? With the stock frequencies I can't get 6.5-7 hours SOT. I'm running LS 12/24 with Lean Kernel OCUC set at 300mhz-26496 I.e. (.3-2.7ghz) and the standard interactiveX Governor that is with it.

Why not just leave it in Battery Saver mode all the time?

Pilz said:
What's your SOT with that set up? With the stock frequencies I can't get 6.5-7 hours SOT. I'm running LS 12/24 with Lean Kernel OCUC set at 300mhz-26496 I.e. (.3-2.7ghz) and the standard interactiveX Governor that is with it.
Click to expand...
Click to collapse
I can't remember actually. I meant to check that. I'll see after use tomorrow.

knitler said:
Why not just leave it in Battery Saver mode all the time?
Click to expand...
Click to collapse
And I have a problem with battery saver mode on liquid smooth. It doesn't vibrate upon receiving a notification. And it seems like it only does that, and turns off animations and lowers brightness

jamcswain said:
And I have a problem with battery saver mode on liquid smooth. It doesn't vibrate upon receiving a notification. And it seems like it only does that, and turns off animations and lowers brightness
Click to expand...
Click to collapse
I believe it also locks the CPU clock down and turns off auto-sync on accounts. On my phone if I use it it tells me I have like 3-4 days of battery left

I am currently under locked at 1958 and my battery life improved drastically. I'm using Set CPU. Here is a screenshot. I'm currently on Chroma. I havent noticed any lag what so ever.

[Q] Nexus 6 problems: display, battery

I've received Nexus 6 from FlipKart, Its great but two major concerns:
1. Screen is very yellow (warm color) and on reducing brightness it becomes magenta. When compared to any other phone including Nexus 5, its extremely yellow. Tried couple of apps, none of them do a good job of fixing the yellows. Did anyone find a good app/setting to calibrate this screen right?
2. Battery life is pathetic: From 100% to 10% in half day. SOT is barely 3 - 3.5 hours (Greenified Facebook, Encryption off), no gaming, where as my friend gets 5hours. Sometimes phone hangs and switches off. When I switch on, it looses 15% battery. It has only been charged 2-3 times (only got it 2 days ago). Does it get better with time? or Am I having a faulty battery?
Update: forgot to mention my phone shuts down at 28% battery. And it didn't boot at all. I realized battery was zero. Is this calibration issue? Or bad battery

Flash elementalx, you'll be able to change color values and battery life is great

1. You can change your RGB using any kernel with support to it. Almost every single kernel have support to RGB LCD KCAL. Use a app such as Trickster to modify the RGB once you flashed a kernel of your choosing.
2. Battery life is subjective to how you use your device. Just because someone was able to achieve 5 hours+ SOT doesn't mean you will either because there are way too many factors that play into effect such as: cellular signal strength, wakelocks, apps installed, etc. If you want to maximize your battery life, look into underclocking the CPU/GPU frequency and flash a custom kernel (e.g. Franco) that removes mpdecision. Mpdecision is a huge battery drain and the frequencies that it selects is completely random and unnecessary in my opinion.
http://forum.xda-developers.com/showpost.php?p=57808725&postcount=7 my battery life with Franco pre-r1.

I agree that mpdecision really does drain battery a lot. I have mine OVERCLOCKED to 2.88 ghz with sensei kernel and intelliplug. And I am still getting way better battery life than stock. Just flash this kernel with intelliplug and there goes your battery issues. And you can also adjust your screen colors.

rmx36 said:
I agree that mpdecision really does drain battery a lot. I have mine OVERCLOCKED to 2.88 ghz with sensei kernel and intelliplug. And I am still getting way better battery life than stock. Just flash this kernel with intelliplug and there goes your battery issues. And you can also adjust your screen colors.
Click to expand...
Click to collapse
For more elaboration on mpdecision,
All Qualcomm based phones have Qualcomm prorprietary userspace binary called "mpdecision" aka m(ake)p(oor)decision. Instead of letting the kernel itself to decide what frequencies and how many cores to run, this "mpdecsion" binary polls the kernel run queue statistics and decides for the whole system the "optimal" frequency and the "optimal" number of cores to use. The concept is fine, except the decision making is done in userspace and it's 100% closed source so there's no way to tweak it and there's a latency (because all userspace binaries needs to "poll" the kernel for the latest information which is slightly delayed). - faux123
Click to expand...
Click to collapse
In other words, mpdecision makes your phone sit at 1.5GHz for doing the most simplest tasks, even composing a email it'll bring your frequency to be at 1.5GHz.
Download CPU Spy and use your phone, then look at CPU Spy and you'll see how much time is spent in that frequency. Then flash another kernel that does not use mpdecision then you'll see the difference, the phone sits at frequencies that makes sense for the load that is on the device.
The alternative solutions would be, Franco's Hotplugging Algorithm or intelliplug by Faux.

Battery life is very subjective.
I am still 100% stock, encrypted, auto brightness and get over 6 hours SOT every charge. Mainly WiFi, some LTE. No gaming.
I will root and switch to another kernel when I have time and see the difference. I would expect more battery.
However if you are only at 2.5 hours SOT on a full charge, I wouldn't expect it to double just by changing kernels.

JasonJoel said:
Battery life is very subjective.
I am still 100% stock, encrypted, auto brightness and get over 6 hours SOT every charge. Mainly WiFi, some LTE. No gaming.
I will root and switch to another kernel when I have time and see the difference. I would expect more battery.
However if you are only at 2.5 hours SOT on a full charge, I wouldn't expect it to double just by changing kernels.
Click to expand...
Click to collapse
Thats so impossible. I've switched to 2G only but i run on Wifi all time and yet 1 day standby and 3.5hrs SOT.

zephiK said:
1. You can change your RGB using any kernel with support to it. Almost every single kernel have support to RGB LCD KCAL. Use a app such as Trickster to modify the RGB once you flashed a kernel of your choosing.
2. Battery life is subjective to how you use your device. Just because someone was able to achieve 5 hours+ SOT doesn't mean you will either because there are way too many factors that play into effect such as: cellular signal strength, wakelocks, apps installed, etc. If you want to maximize your battery life, look into underclocking the CPU/GPU frequency and flash a custom kernel (e.g. Franco) that removes mpdecision. Mpdecision is a huge battery drain and the frequencies that it selects is completely random and unnecessary in my opinion.
http://forum.xda-developers.com/showpost.php?p=57808725&postcount=7 my battery life with Franco pre-r1.
Click to expand...
Click to collapse
Impressive! I'm trying ElementalX kernel right now. Is it safe to switch-off MP-decision on that using trickster or shall I go with franco blind folded.

taranfx said:
Thats so impossible. I've switched to 2G only but i run on Wifi all time and yet 1 day standby and 3.5hrs SOT.
Click to expand...
Click to collapse
Well, not impossible as it has been that way on my phone since day 1.
But i agree that it is really odd how some people are getting 3 hours and others getting 6.
I had the opposite on my Note 4 though. Everyone got 6 and I got 4. So who knows?

taranfx said:
Impressive! I'm trying ElementalX kernel right now. Is it safe to switch-off MP-decision on that using trickster or shall I go with franco blind folded.
Click to expand...
Click to collapse
You only want to disable MPDecision if theres a alternative. For Franco, mpdecision is 100% removed so you don't need to disable anything.
I don't know ElementalX so I can't say, ask in their thread. If you use Franco, everything is done for you and you don't need to do anything on your part.

My battery life with LK is pretty good as well! I was able to tether for 10 hours straight and still had 22% left after sleeping ~8 hours.

Setting the right CPU maximal/minimum frequency for better battery life

I'm totally a rookie for modify the kernel, but i wish to get better battery life for my nexus 6. So i read often that changing the CPU Maximal/Minimum Frequency - for example for the franco.kernel or Lean Kernel or other kernel - almost everybody get a better battery life and no wake locks. At the moment i use the nexus 6 stock with no custom software, but the battery life isn't very good.
My questions now: How can i setting the right CPU Maximal/Minimum Frequency for the franco.kernel or Lean Kernel or other Custom Kernel? Are there specific apps? And the most important question: Which are the right numbers to set for the CPU Frequency?
Thanks. :good:

Erdiou said:
I'm totally a rookie for modify the kernel, but i wish to get better battery life for my nexus 6. So i read often that changing the CPU Maximal/Minimum Frequency - for example for the franco.kernel or Lean Kernel or other kernel - almost everybody get a better battery life and no wake locks. At the moment i use the nexus 6 stock with no custom software, but the battery life isn't very good.
My questions now: How can i setting the right CPU Maximal/Minimum Frequency for the franco.kernel or Lean Kernel or other Custom Kernel? Are there specific apps? And the most important question: Which are the right numbers to set for the CPU Frequency?
Thanks. :good:
Click to expand...
Click to collapse
first off, questions go into the q&a/help threads, not general. and there are many cpu control apps to use, some free, some paid. thats the way for you to setup your cpu anyways you feel like. and there is no such thing as the right numbers, you need to find the right numbets for your use. me, i overclock to 3033mhz, and still see 5.5-6.5 hours of sot.

Thank you!

You shouldn't necessarily change the minimum and maximum frequencies because they won't necessarily save you battery.
When you look at the mex frequency of 2650 MHz, that's how many clock cycles there are per second. 2,650,000.
Every task you do on your phone will complete within an amount of clock cycles. Let's make some things up to illustrate this. Let's pretend that it takes Facebook app 5,000, 000 clock cycles to open. That means it would take nearly 2 seconds. If you set your Mac CPU frequency to half of stock, that app is going to take twice the time to open. The question is, will running running at 1267 MHz for 4 seconds use less energy than 2650 MHz for 2 seconds?
Looking at the voltage table for elementalx, the stock voltages are 890mV and 1110mV so it seems to me that since the voltage for half the max frequency is a lot higher than half the voltage of max frequency, running a task for twice as long would use more energy than max.
Surely, there will be tasks that take significantly fewer cycles than max frequency, so in those instances it may seem a bit more balanced, but its one of those things you're going to have to just try for yourself. Some people seem to get better battery though personally I'm not tempted.

Thank you, too! Now i understand.
Should I flash only the Lean Kernel or franco.Kernel and then look again at the battery life? Is this enough to get a better battery life on my device?

Erdiou said:
Thank you, too! Now i understand.
Should I flash only the Lean Kernel or franco.Kernel and then look again at the battery life? Is this enough to get a better battery life on my device?
Click to expand...
Click to collapse
no. kernels generally wont give you better battery life, but they can help you. battery life is dependent on how you use your device, how you set up your device, what apps you installed and use, your brightness, and the quality of your phone/data connection. and much more other things that weigh in less then these on nattery life.
some apps you install can be badly written, and take lots of battery, even though you rarely use. dropping brightness can increase your battery life. i keep my brightness below 15% usually. if i raise it to 35-40%, ill see a whole hour less screen on time.