Database Users

I'm Getting Great Battery Life!

I installed OMGB-6 when it was released. Then flashed invisiblek #21 kernel and the new market. Since I last charged it, I've talked on it for about an hour, used the web-browser (Skyfire) fairly moderately, sent a few emails (Gmail), and spent a total of about an hour of GPS through the application WAZE. I'm left at 22% battery left after about 22 hours of use.
I've been fairly lazy with regards to changing the screen brightness, so it's been on about 50% brightness. I've left sync and gps on during the whole time.
I've been using Watchdog as a smart task manager. I have SetCPU installed, but I haven't used it at all.
Here are some pics:
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I have not installed the kernel but my battery life is terrible. I barely have any apps and I do not use my phone a lot. I love the rom (favorite by far). Should I try to install the kernel.
Sent from my Htc Incredible using XDA App

rllong1 said:
Should I try to install the kernel.
Sent from my Htc Incredible using XDA App
Click to expand...
Click to collapse
Can't hurt, just nandroid first, or have a spare kernel handy.
Sent from my ADR6300 using XDA App

I chewed through my battery in about 10 hrs today with the same kernel.
Guess I use mine a lot more. I've also got 26 hrs out if it when I barely use it.
Don't think you get great battery life when you don't use it much.
I'm in CM 6.1 but that wont really matter.
Sent from my Sprint Galaxy Tab

True, I haven't been using it all that much. But compared to other ROM's I've used, this get much better battery. Everything else I've tried out got me a max of ~12 hours even on idle the whole time.
Definitely try to install the kernel. Can't hurt! Just make sure you always have a nandroid backup available.

anekdotos said:
I installed OMGB-6 when it was released. Then flashed invisiblek #21 kernel and the new market. Since I last charged it, I've talked on it for about an hour, used the web-browser (Skyfire) fairly moderately, sent a few emails (Gmail), and spent a total of about an hour of GPS through the application WAZE. I'm left at 22% battery left after about 22 hours of use.
Click to expand...
Click to collapse
Stock Battery?

50% Brightness?!?!?! Wow....battery life is not worth looking at a dull screen. 100% all the way for me...im using 1800mah from ChiChitech that I got for $20. Seems to help enough.
I'm also running a Gingerbread ROM (Evervolv a17) but can't tell what difference it's making on battery.

h3rmanmunst3r said:
50% Brightness?!?!?! Wow....battery life is not worth looking at a dull screen. 100% all the way for me...im using 1800mah from ChiChitech that I got for $20. Seems to help enough.
I'm also running a Gingerbread ROM (Evervolv a17) but can't tell what difference it's making on battery.
Click to expand...
Click to collapse
the screen is not dull when it's set low...lol 100% brightness is like staring at the sun for me.
Sent from my ADR6300 using XDA App

gr.ayre.st/s/screenshots/android/incbattery_0.png
gr.ayre.st/s/screenshots/android/incbattery_1.png
gr.ayre.st/s/screenshots/android/incbattery_2.png
Edit: I made some screenshots but XDA's spam prevention (no external links for new accounts) prevents me from actually linking them. You can copypasta if you're interested in the details.
Hydra 1.13 overclock kernel, stock ROM, stock battery, auto-brightness. I'm currently at 20% battery after 2.5 days. Light usage over the weekend, but there is an hour and a half of talk time in there and a half hour of reading.
The trick to DI battery life is keeping the data network usage/standby under control. If you're trying to send/receive data with no signal, the phone will burn through its battery in 4 hours and I've used 20% in 15 minutes trying to book a flight on a low signal connection.
Realizing this took me a few months since I live in NYC and as such, go through a lot of signal shadows. Some days my phone would be at 50% battery after 12 hours, other times it'd be dead after 6. I now realize that the short days were caused by sync services trying to run when I was in a shadow. You can diagnose this for yourself by going to the cell standby section of the battery usage. If you're over 10% or so without a signal, you have this problem.
You can handle this manually by holding down the power (on the stock rom) and enabling/disabling mobile network. This is a pain in the ass.
I handle this with some simple Locale rules along with the Mobile Signal and Mobile Data plugins. The first is to shut off the data when there's no signal. The second is to shut off the data at work where I'm usually but not always on a wireless network. The third is to shut down the data during my normal sleep hours and airplane mode if I'm at home.
These easily got me to 36 hours so I grabbed an undervolt kernel, which gets me to 2 days of regular use. Daily I do about 15m of talk, 40m reading news/email on the subway, and another 30 mins browsing/messaging/misc. My monthly data use is ~350MB.

While it is likely true that the OP and others have good battery life under their specific use conditions, battery life in general on smart phones is mediocre to poor at best. I have friends with various different models of smartphone (including iphone) and across the board battery life is not good. The exception is blackberry, but I don't consider those competitive from a tech and feature standpoint. Obviously different people are going to have different opinions and experiences based on the various factors that influence battery longevity.
The solution is to stop worrying about it, get a spare or two or three and pop in a new battery when one dies. This imo is one of the best things about the Dinc and Android phones in general. Just my 2c.

Battery Life on the X10

Ok, so there was a lot of discussion in Z's FreeX10 thread regarding whether it improved/worsened battery life, so I am running a little experiment. With the aid of Juiceplotter I ran for a few days on FreeX10b4, and then on the stock(ish) Rooted JIT 2.1.A.0.435 found here.
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Beta 4 Over 24 Hours
Beta 4 Zoomed in on a period of use
Stock .435 over 24 Hours
Stock .435 zoomed in on a period of use (not the same day as the first image)
Typical use is just web browsing, not games or videos. It certainly looks a little steeper on the Beta4 graph.
Tomorrow I'll flash to the previous baseband and repeat for beta3 vs. Stock. If anyone knows how to make the pictures smaller I'd be grateful... I know how to do it in HTML but I've never posted anything in PHP before!
26/02/2011 Ok, after much delay I'm now running .49 baseband, flashed using Zhidhu's pre-rooted 2.0.2.A.24 found here. As some in the comments have noted, results seem to vary wildly w.r.t. battery life, which is why I thought I'd run tests on them all using the same handset and the same usage (i.e. mine) which should eliminate most variables.

Mine is the best it's ever been personally... Seems like results are extremely varied.

I get a vary of result for example today it has used 49% of the battery in 4 hours o.0
using juice defender but not auto task killer

fiscidtox said:
Mine is the best it's ever been personally... Seems like results are extremely varied.
Click to expand...
Click to collapse
I totally agree! My x10i may last even 3 days with moderate use of data and wi-fi, barely 1 if use it like it has to...

. 435 very good battery life here having struggled on beta4
Sent from my X10i using XDA App

I think there may be a bit of a battery or power glitch. My phone has stopped charging a couple of times, once at 74%, the other at 92%, and the battery has got quite hot. A swift reboot sorted it.
Generally, I think FreeX10 may be a bit heavier on the battery, but it's really hard to tell because it's so much nicer to use compared to the stock ROM that I think I'm using the phone lots more than I was :-D
Sent from my X10i using XDA App

I had some woeful battery time with Freex10Beta3, but then yesterday it was fantastic - sure, I wouldn't get 3 days out of it, but I could have pushed 1.5 easily...
Trouble with battery life is that it isn't an exact science (should be), but it seems you can change nothing, and have some drastic improvements. Or hardly touch the phone one day and it's dead in no time.

My X10 since new always drains my battery in one day, it's not a hardware problem, since i got a replacement, and then a battery replacement, i wish we could improve the batttery life a little more
i'm on BETA4

I'm not gonna say my battery life has been amazing lasting for weeks or anything but ive had no problem with it. I mean it lasts more than a day or maybe more than two with relatively light usage. And if I'm constantly on it I can drain it in 8hrs but I never drain it completely. And I've seen consistent life over the roms I've used as long as the flash was good which sometimes takes a couple times. My mom has one and she uses it only sparingly and it lasts over a week so in reality for having a computer in your pocket the life is not that bad. Besides do you really need to update your twitter status every 6 minutes??
Sent from my Delorean using a flux capacitor!

Nice Idea.
Personally I found that the battery life on Beta 2 was better than Beat 3 and 4.
Is is possibile to add it to your test?
Also the only only diffrence between Beta 3 and Beta 4 is the Baseband...

That's really what I'm testing... however I haven't had time to flash back to the old baseband yet. Real life tends to interfere...
Sent from my X10i using XDA App

30% left after 13 hours off heavy usage, no auto killers, wifi on, about an hour talk time.
Sent from my X10i cm 6.1.3 v4 using XDA App

Using Bitsnacker's 2.1 ROM on .435; no data, BT, GPS and STILL a strange battery leak I can't seem to trace. F.Y.I. also using SetCPU and AutoTaskiller, and a few Sysctl tweaks, so I may have created conflicts in my ignorance....

I've had a couple of times, since using b4 a weird thing where I plug it in and it drains really fast down to zero while charging. Rebooting seems to fix it though.
If it happens on b3 or stock 2.0.2.A.0.24 I'll know it's a fault with the handset and not a software issue.

Battery Life moaners

Fed up with the moans about battery life. Yes there are issues but not to the extent that some people suggest.
Below are screenshots of my battery usage:-
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This is from a normal usage of my phone. As you can see from the graph the last few hours were me connected to wi-fi constantly, tweeting, fiddling and browsing forums. Yes a quick drain but this is a phone!
My point of this post is compare this to tablets and netbooks. The majority last 6 hours, tops. The SGS II is a dual core, amoled phone. It was always going to be a beast on the battery. However if you use it wisely, ie only have Wi-Fi on when necessary, the phone lasts as this phone should.
It out performs most tablets and for the relative size of both screen and battery I would say that's hugely impressive.
Looking forward to your comments.
Sent from my GT-I9100 using XDA App

Your post is refreshing because of the following:
1) Clearly shows the display is the biggest drainer of battery. Anything else means you simply didn't setup your phone right or have some rogue app chewing stuff up.
2) You're not going bonkers with "OMFG my phone only lost 0% over 4 hours" and then post a graph that shows the screen was on for 2 seconds. Uh, well... duh! Completely stupid and pointless, glad your graph actually reflects real usage and battery drain.

samed1983 said:
Fed up with the moans about battery life. Yes there are issues but not to the extent that some people suggest.
Below are screenshots of my battery usage:-
This is from a normal usage of my phone. As you can see from the graph the last few hours were me connected to wi-fi constantly, tweeting, fiddling and browsing forums. Yes a quick drain but this is a phone!
My point of this post is compare this to tablets and netbooks. The majority last 6 hours, tops. The SGS II is a dual core, amoled phone. It was always going to be a beast on the battery. However if you use it wisely, ie only have Wi-Fi on when necessary, the phone lasts as this phone should.
It out performs most tablets and for the relative size of both screen and battery I would say that's hugely impressive.
Looking forward to your comments.
Sent from my GT-I9100 using XDA App
Click to expand...
Click to collapse
You could have posted this in the same battery thread to save some space on the front page in general section, no offence...

I am actually fairly happy with my battery life
My Android OS has never gone past 10%
Getting around 16-17 hours with heavy-ish use, not bad imo

kryptoner said:
You could have posted this in the same battery thread to save some space on the front page in general section, no offence...
Click to expand...
Click to collapse
You're right. We wouldn't want to take away from the banding on the left side of the display, Wi-Fi issues, and the camera pink spot.
Sent from my GT-I9100 using XDA Premium App

Andy2.2 said:
I am actually fairly happy with my battery life
My Android OS has never gone past 10%
Getting around 16-17 hours with heavy-ish use, not bad imo
Click to expand...
Click to collapse
Which rom are you using?

Op thats light usage...
Sent from my GT-I9100 using Tapatalk

kryptoner said:
Which rom are you using?
Click to expand...
Click to collapse
stock, although I'm still at the stage where I can't put the phone down for more than a couple of minutes.

Andy2.2 said:
stock, although I'm still at the stage where I can't put the phone down for more than a couple of minutes.
Click to expand...
Click to collapse
stock is fine, but tell us the kernel version

KE7
10char

If you use kf2 you can get rid of the wifi sharing and save 15% battery.

kryptoner said:
You could have posted this in the same battery thread to save some space on the front page in general section, no offence...
Click to expand...
Click to collapse
I couldn't find it again, my intention was to post in the same thread. Tried searching but came up with bumf.
Sent from my GT-I9100 using XDA App

now im gonna say this,
you people really shouldnt compare battery time like tht. Its the screen on time you should compare!! its far more accurate than this. i can get around 3h of constat use and connected to wifi. this is screen on time.

what's average screen time in hours for most users? i've been reading about 4 hours plus or minus 1. 8 hours is unreasonable on one charge? i like to read books so i am wondering about this. i highly anticipate this phone but the n9 kind of looks hot too if the rumor is true alien dalvik allows android apps on meego.

So what? You kinda never used your phone. Surf the internet connected via 3g and come back to tell me

So you use your phone less than my grandma and hardly get two days out of the battery?
Great, that's nothing to be proud of.
With this usage my Omnia7 lasted for a week but the SGSII drains harder than my kitchen sink.

I noticed light consumes unusually lot of power too .. I recommend not using it as torch. White screen works just as fine for me (in total darkness). It seems they put in even stronger LED then in previous models .. and it better be used just for the moment as photographic flash. Battery voltage drops significantly .. and it slowly returns after the LED is turned off .. which means it's really strained a lot.

I bet i can get 2 days of battery in the way you used your phone. Screen was rarely on, so you just showed us that you can get a day and a half of stand-by.

At the risk of being accused of grandma phone usage im actually fairly happy.. The wifi sharing thing is a ***** so axed that.
This is with stock but rooted ke7
Sent from my GT-I9100 using XDA App

I'm getting pretty good battery life aswell with stock kf2. The only thing I did is deleting some of he crappy samsung apps and froze wifi sharing. I get about 2 days of battery with normal use. And yes i do use the phone in these 2 days.
Sent from my GT-I9100 using XDA Premium App

Nexus 7 Battery Life

Hi! I recently got a Nexus 7 and I am somewhat disappointed in the battery life. I am only getting around 3 hrs of battery life and is draining quickly while idle. The battery is also draining while being used while connected to my pc. I am using Jellybro rom along with Trinity Alpha 64. Can anyone recommend the best Rom/Kernel combination for battery life ? I read that Trinity is great for battery life so I'm doubting the Rom (however it works great on my Galaxy Nexus). As I dont always use the same things on my tablet I cant really test the different roms myself.
Thanks
Sent from my Galaxy Nexus using Tapatalk 2

I'm getting great battery life on my stock N7 :|
I tried it the other day, used it all day and it died after around 8-9hrs. Was tethering via bluetooth, brightness set to auto, and either played games, used FB messenger, or read Wall St Journal frequently throughout the day.
Sync and location enabled.
Oh and the N7 will probably discharge faster than your PC can charge it. Typical USB ports on a PC only output .5A of power. Chargers meant for tablets usually provide about 2A of power. So thats another issue.
Might I suggest running the N7 till it shuts itself off due to no battery, then letting it sit and charge overnight till its 100%?
Sent from my Nexus 7 using xda app-developers app

Thanks for the reply Can you please tell me the Screen on time ? Since then I switched to Paranoid Android so I'll how it goes but maybe the stock rom has a better battery life ?
Thanks
Sent from my Galaxy Nexus using Tapatalk 2

Last night I got 19.5 hours on battery with 7.5 hours screen time on paranoid android. I'd say its safe to say that...
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Hmm sadly I didnt take a screenshot when I did that 8-9hr run.
I'll unplug my tablet for today though and by tonight maybe I'll have some interesting results for ya.
Sent from my Nexus 7 using xda app-developers app

If its enough to make you mad then its prolly not right.
To say your doing in wrong would be a far shot but your tablet is definitely doing it wrong..lol. I was just saying the other night to my girl that I was super happy with the battery because it lasts all day for me. From 7am in the morning till 12 at night. Of course im not using it every waking moment but I do check it/use it as much as I would have normally used my phone. During work I am on wifi till about 430 and then from 430-8/9 while im in class im tethering using it almost the whole time, then when im home for the rest of the night I will be on wifi. The things I do vary from webbrowsing (reddit, xda, etc) emailing attachments, listening to google music and GPS/texting. (yes I use tablet talk which is why I rarely use my phone anymore except to setup tethering)
If you are having any issues with your battery I recommend to get a battery app to reset the stats and try again. If not return to stock then try that method again.. then if NOT return.

revamper said:
Last night I got 19.5 hours on battery with 7.5 hours screen time on paranoid android. I'd say its safe to say that...
Click to expand...
Click to collapse
Haha Thanks for the replies I'll see how it goes with Paranoid Android
Sent from my Galaxy Nexus using Tapatalk 2

modstorm said:
Haha Thanks for the replies I'll see how it goes with Paranoid Android
Sent from my Galaxy Nexus using Tapatalk 2
Click to expand...
Click to collapse
Just turn off your google account auto-sync and your battery life should increase dramatically. I use the power widget to toggle sync.

Okay here are some screenshots of my battery life... Not sure if its uploading properly though since im doing this through the app.....
EDIT: Looks like it didnt work... But basically I had about 20.5hrs of total battery time. Screen on for a total of 5.5hrs. Bluetooth on the entire time, WiFi on for about 6 hours.
Sent from my Nexus 7 using xda app-developers app

Nippero said:
I'm getting great battery life on my stock N7 :|
Oh and the N7 will probably discharge faster than your PC can charge it. Typical USB ports on a PC only output .5A of power. Chargers meant for tablets usually provide about 2A of power. So thats another issue.
Click to expand...
Click to collapse
My N7 discharges faster than the google provided AC mains charger can recharge it. That seems pretty pathetic to me. How is it for others?

Battery life woahs. What Rom/Kernal should I jump to

My battery life is crap. I replaced the original 2 year old battery a few weeks ago, and still no improvements. I am using SIMPLEAOSP right now, with the default kernel it comes with.
I have to get something different. I am getting like 12 hours of mild usage before I need to find a wall. That is unacceptable. I have done all of the battery tweaks I can do within 4.4.4 and still keep most of my daily functionality (disabling NFC, low accuracy GPS, etc).
What would you guys recommend I try. I am tempted to just hold out until L is released, but I cannot keep living like this (firstworldproblems). I was just going to buy a N6, but it is WAY too big and WAY too expensive.

y0bailey said:
My battery life is crap. I replaced the original 2 year old battery a few weeks ago, and still no improvements. I am using SIMPLEAOSP right now, with the default kernel it comes with.
I have to get something different. I am getting like 12 hours of mild usage before I need to find a wall. That is unacceptable. I have done all of the battery tweaks I can do within 4.4.4 and still keep most of my daily functionality (disabling NFC, low accuracy GPS, etc).
What would you guys recommend I try. I am tempted to just hold out until L is released, but I cannot keep living like this (firstworldproblems). I was just going to buy a N6, but it is WAY too big and WAY too expensive.
Click to expand...
Click to collapse
It could be many things, your signal strength, your apps, your usage, or your wakelocks. Provide information about this and then come back to us.
y0bailey said:
My battery life is crap. I replaced the original 2 year old battery a few weeks ago, and still no improvements. I am using SIMPLEAOSP right now, with the default kernel it comes with.
I have to get something different. I am getting like 12 hours of mild usage before I need to find a wall. That is unacceptable. I have done all of the battery tweaks I can do within 4.4.4 and still keep most of my daily functionality (disabling NFC, low accuracy GPS, etc).
What would you guys recommend I try. I am tempted to just hold out until L is released, but I cannot keep living like this (firstworldproblems). I was just going to buy a N6, but it is WAY too big and WAY too expensive.
Click to expand...
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Are you having battery life woes, or are you like "woah, my battery life sucks"?
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Woah.
Wakelock detector + Greenify can find and put to sleep what's keeping your phone awake.

Wipe your phone and return to stock. Flash your ROM and don't use google now. But honestly you probably just need to put your phone down.

smoka206 said:
Wipe your phone and return to stock. Flash your ROM and don't use google now. But honestly you probably just need to put your phone down.
Click to expand...
Click to collapse
I do use google now, but I actually like it. But that hasn't changed, and my battery life has.
I am hoping that wakelock + greenify can figure it out, because after replacing the battery I have had ZERO improvement. Which leads me to think it is ROM/app related.
Today I flashed a new ROM (purity) and threw franco's kernel on. The testing will resume.
One a more interesting note, today during my battery life searches I ran upon a thread about T-mobile using significantly less battery during the day, compared to AT&T. http://blog.laptopmag.com/tmobile-phones-longer-battery-life
I did recently go from the $30 T-mobile plan the a $45 straight talk plan using AT&T. I wonder if that is making an impact as well.
So yea...I am working on it. WOAH!

Kind of the same problem here, received new battery today but my Torx is too big! Have to get one that fits.. but i suspect that the main problem is the battery drain in standby/deepsleep. I can get to 90-120minutes of DOT, that was never much better, but what the phone is doing while i don't use it is the problem. I tried BBS, WLD, CPU Spy and Greenify.. but i suspect that some google background service is the bad boy.