Develop Bugs

My biggest gripe with this phone: Battery Life

I LOVE the Galaxy Nexus, but the rate at which the battery discharges is just ridiculous. I'll use the phone for 15 minutes doing things like Twitter or Web Browsing, and it'll discharge 5% in that time. To me, that is horrible. I'm being really conservative too. Throughout a day I try not to play videos, games, or anything else intensive because I know it'll ruin my battery life. Even on standby it discharges 5% in an hour. Typically I lose about 10% an hour and my max has been 12 hours so far.
I have auto sync turned on and keep the screen low when possible. I NEED auto sync on because of the nature of my work. Compared to my iPhone 4S battery is downright pathetic.
Today my usage consisted of one phone call, a few text messages, lots of Twitter, and light web browsing. Nothing too crazy. Again I'm being really conservative with my usage whereas on my iPhone I can do whatever I want and not worry. I'm just not seeing how people are getting 15+ hours and claim heavy usage. I'd love to believe that! The battery drains so fast during normal usage it may be a deal breaker for me.
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Edit: My battery discharged 2% just while writing this post.
Sent from my Galaxy Nexus using XDA App

It sounds like your definition of light usage is wrong.
I wouldn't consider heaps of twitter and some web browsing light usage. I would consider it moderate usage, in which case you seem to be in line with everyone else.
I agree with you in that the battery life isn't quite what I would have liked. Ideally I wouldn't have to worry about battery at all, and I'd be able to play games and browse the web as much as I like, but for normal usage it's fine.
The next Nexus though, man, that will only have to be charged once a month. I can't wait.

Niksko said:
It sounds like your definition of light usage is wrong.
I wouldn't consider heaps of twitter and some web browsing light usage. I would consider it moderate usage, in which case you seem to be in line with everyone else.
I agree with you in that the battery life isn't quite what I would have liked. Ideally I wouldn't have to worry about battery at all, and I'd be able to play games and browse the web as much as I like, but for normal usage it's fine.
The next Nexus though, man, that will only have to be charged once a month. I can't wait.
Click to expand...
Click to collapse
Twitter hardly taxes the processors at all. Refreshing it every so often should hardly take any battery life at all. Web Browsing I can understand, but my total time browsing today probably amounts to 10 minutes total.

I wonder how much of the drain is attributed to the 4.65" screen. It's a monster.
-Sent from my Arc (LT15a)

I expect the battery life go improve within the first few cycles. I had a similar experience with the Nexus S last year.

AdamUpNorth said:
I wonder how much of the drain is attributed to the 4.65" screen. It's a monster.
-Sent from my Arc (LT15a)
Click to expand...
Click to collapse
Most of it. 720p Super AMOLED HD is killing the battery. The only way to last a long time is to not turn the screen on.

rashad1 said:
I expect the battery life go improve within the first few cycles. I had a similar experience with the Nexus S last year.
Click to expand...
Click to collapse
I've had the phone for a week so far.

almost 3hours of screen from 10h standby!! mate give us a break and get back 4s. !!
heavy usage not low!
i can see low signal (coverage) what can also produce higher battery drain.
twiter running 24/7 in backround sync on + wifi + games...
i dont know what you want... you will never get anything similar from for example HTC sensation or even your favourite 4s.
dont take it on bad way..but if you dont know what to do - try to save your battery..
-lower your screen britness
-remove/disable apps that are producing the heavy drain (use betterbatterystats app)
-stop playing games - if you wanna long life for your battery.
-etc...
Best regards

People using a G2x claim to get a day and a half... I'm lucky to get out of work. Push email for work is to blame I think. I get tons of emails (100 a day) and I think its taxing. From your pics, the screen used over 50% of it. That's a lot.
Sucks.
Also make sure your aren't turning on the screen every 5 minutes to check the status. Since your coming from an iOS, are you closing apps properly (back = close, home = minimize).
I'm not saying your crazy but just saying.
LG G2x - 2.3.7 CM7
Asus Transformer - 3.7 Revolver OC/UV

rashad1 said:
I expect the battery life go improve within the first few cycles. I had a similar experience with the Nexus S last year.
Click to expand...
Click to collapse
I had the same thing happen with the Nexus One. The battery wasn't that great but, got better after a few charge cycles.
I've never had a Android phone that could match the battery life of the Iphone. I can sit the iphone down at night without putting it on the charger and, if it's at 100% it will be at about 90-95% when I wake up. I did the same thing with my Mytouch 4G and, it was at 15%
To the OP, I would recommend keeping a charging cable with you when you out and about especially in your car. I've had car docks with a few of my android phones and, always keep the phone docked when I'm driving somewhere. It really helps.

What you also need to remember is this is the first release of ICS and is still in development so battery life my be improved in the next update. Like you mention iPhone4S there was massive battery leakage in the first release of IOS 5 which Apple apparently fixed in the newest update.. So maybe in the next update we can expect some bugs ironed out.

Used to only have ONLY 2-3 hours screen ON on my Vibrant so I know how SAmoled looks like.
I know iphone battery is good, but you need to consider the screen size too..
Get a spare battery with your "light usage", but I am thinking how much would it cost becoz of the NPC antenna.

Too good thing is, unlike iPhone, you can buy a spare battery and carry it with you.

3 hours of screen use is what the problem is. That is a long time. I wouldn't complain about that at all.

Storm T said:
3 hours of screen use is what the problem is. That is a long time. I wouldn't complain about that at all.
Click to expand...
Click to collapse
exactly what i am trying to say
+1

Hunteres said:
almost 3hours of screen from 10h standby!! mate give us a break and get back 4s. !!
heavy usage not low!
i can see low signal (coverage) what can also produce higher battery drain.
twiter running 24/7 in backround sync on + wifi + games...
i dont know what you want... you will never get anything similar from for example HTC sensation or even your favourite 4s.
dont take it on bad way..but if you dont know what to do - try to save your battery..
-lower your screen britness
-remove/disable apps that are producing the heavy drain (use betterbatterystats app)
-stop playing games - if you wanna long life for your battery.
-etc...
Best regards
Click to expand...
Click to collapse
I already said I didn't play any games today and my screen brightness is low. For some reason Shadowgun stays in the battery info screen. I played the game two days ago and manually closed it out. Even after rebooting the phone its still there.
I'm being 100% real, stop trying to make excuses or act like I'm an iPhone fanboy. The Galaxy Nexus combined with ICS is the best phone I've ever used! I'm just terribly disappointed with the battery life.

Twittering all day is sucking up battery because of all the data use. Dude, youre not a light user with 3 hours screen time moderate, possibly heavy depending on background stuff sycing automatically. You have some tweaking to do, not whining.
Sent from my samsung gt i9250 which is in the wrong country.

Storm T said:
3 hours of screen use is what the problem is. That is a long time. I wouldn't complain about that at all.
Click to expand...
Click to collapse
3 hours is not that much. Seriously. It shouldn't be damn near dead after 10 hours. Imagine if I decided to play a game for 15 minutes or watch 2 YouTube videos.
I bet if people were getting an hour and half with this phone, all the fanboys here would say the same thing. "Man, an hour and a half is a long time! You should be happy with that!".

pukemon said:
Twittering all day is sucking up battery because of all the data use. Dude, youre not a light user with 3 hours screen time moderate, possibly heavy depending on background stuff sycing automatically. You have some tweaking to do, not whining.
Sent from my samsung gt i9250 which is in the wrong country.
Click to expand...
Click to collapse
I've tested out the battery difference by turning off auto sync. Doesn't make a difference at all. Fact of the matter is that the battery drains like crazy when the screen is on.
I'll just turn my phone on because actually using it is frowned upon here.

tylose said:
Too good thing is, unlike iPhone, you can buy a spare battery and carry it with you.
Click to expand...
Click to collapse
Except they aren't out yet

[TIP] How I get ~24 hours of battery power from my Galaxy Nexus nearly every day!

I will defer to the xda mods if they think this thread is redundant. I have been using my Galaxy Nexus now for ~3 weeks. During that time, I have seen my daily battery life improve from ~10 hours to a little over 24 hours before needing a charge. I have listed out the power saving strategies I've developed during these 3 weeks following the screenshot [PROOF]:
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1.) Calibrate your battery using the following methods here: Battery Calibration.
2.) While on battery power, set your Nexus display's brightness level to ~30%. I've found that particular brightness level to be a sweet spot. Auto brightness does not work for me, so I hard set the level. I am able to get between ~4 to 5 hours total of screen time a day on battery power at that level. There are many Android Market apps/widgets that will allow you to set power profiles depending on your location and power draw and/or charge.
3.) Along with conservative display settings, I turn off cellular data entirely, or only use 2G (Edge) when connected to a WiFi hotspot. I have an unlocked I9250 Worldband GSM Galaxy Nexus, so I'm unable to address 4G LTE. But if I did have access to 4G LTE, I imagine the only time I would use it would be for tethering while the phone is plugged into a power source. Regardless, 3G (HSPA+) can be a significant power draw, and 4G doubly so. When on WiFi, 3G and/or cellular data is off entirely. My guesstimate is this saves me between 15 - 20% battery power throughout the day.
4.) I set application accounts to sync and updates only when on WiFi.
5.) Avoid rebooting or powering off the phone while on battery power. I've noticed a loss of between ~2 - 5% when rebooting the phone on battery.
6.) No live wallpapers, and the image I do use for a wallpaper is very dark. I set the homescreen widgets to nearly transparent and white text. I'm certain this conserves battery power, but by how much I can't say. [REFER]:
7.) During a typical day for me, I'm constantly using Twitter, Google+, Facebook, Gmail, the ICS Browser, TapTalk, and of course the homescreen widgets connected to network services. I would consider myself an average to heavy user depending on the day. All Gmail is pushed. My widgets update between 1 - 3 hour intervals. You can tell by the screenshot provided my WiFi signal is always on, my Awake and Screen On times are between 4 to 5 hours total of the 24 hours available. As you can see from the screenshot, during that 24 hour period I did not top off with a power charge during that time.
Any other tips for extending battery life are welcome. I hope this helps.

Cool. I keep my phone plugged in when I am in the car or desk and that seems enough for me without having to compromise. 4G is a real killer

Are you using Tasker to kill data when on wifi and enable it when not?
I was under the impression the OS did this automatically
Sent from my Galaxy Nexus using Tapatalk

FYI, the original poster is a HSPA+ user. Entirely different experience from a LTE user.

Err... if there is anything I take away from this thread, its: "If you want 24 hours of battery life on your Google Nexus, don't use it."
It's hard to say for certain, but it sure doesn't look like you used your phone very much over 24 hours. :|

sc4fpse said:
Err... if there is anything I take away from this thread, its: "If you want 24 hours of battery life on your Google Nexus, don't use it."
It's hard to say for certain, but it sure doesn't look like you used your phone very much over 24 hours. :|
Click to expand...
Click to collapse
Total time the screen was on was between 4 to 5 hours total out of that particular 24 hour period. Depends on your definition of "use", but I've seen definitions of moderate to heavy smartphone use defined in various forum posts throughout XDA somewhere between 3 to 6 hours of screen time on a single charge. YMMV.

zoetrope said:
Total time the screen was on was between 4 to 5 hours total out of that particular 24 hour period. Depends on your definition of "use", but I've seen definitions of moderate to heavy smartphone use defined in various forum posts throughout XDA somewhere between 3 to 6 hours of screen time on a single charge. YMMV.
Click to expand...
Click to collapse
Based on that image, there's no way you got even 3 hours of screen on time.

wonshikee said:
Based on that image, there's no way you got even 3 hours of screen on time.
Click to expand...
Click to collapse
I'm certain it was over 4 hours, I remember digging into the screen stats under the battery settings before taking a screenshot. I don't have a screenshot of the screen stat window during that 24 hour period.
Don't believe me? I don't really care. I have nothing to hide and nothing to prove. Just relaying my experience with the GN battery over a 3 week period.

I would rather keep 4g on and just charge throughout the day. Why pay a premium if you're not going to use it, but I suppose you don't have 4g so you don't care.

sc4fpse said:
Err... if there is anything I take away from this thread, its: "If you want 24 hours of battery life on your Google Nexus, don't use it."
It's hard to say for certain, but it sure doesn't look like you used your phone very much over 24 hours. :|
Click to expand...
Click to collapse
This. Doesnt look like 4-5 hours screen time because the phone isnt awake enough.
Sent from my Galaxy Nexus using xda premium

I don't see a problem with the battery life for the size of the phone.
I'm sure it would go a day and a half before needing a charge with my usage (which I consider 'normal') but I plug it in everynight while I sleep anyway.
The battery life definately improves after a few charge cycles.

I agree with sc4, you basically are saying not to use the phone. You do not have to take such extreme measures just to get good battery life. I get pretty good battery life and I don't disable anything.

Well I thought it was a nice post. Jeez. Especially if you compare to most of the crap that comes up in the general section.
I couldn't find where he said "dont use 4g der". I believe the idea he presented was to turn off 3g/4g while you're on wifi. Do you need 4g AND wifi? Easy, common sense. Thumbs up.

Just so you know: WiFi uses the same amount of power to transmit/receive data as 3G. You're not saving anything by turning off the 3G radio while on WiFi since the only thing it's being used for is phone calls and text messages.
In addition, being in WiFi all day long can *really* improve your battery life. It's easily the biggest thing on your list. Why? Because the cell radio isn't constantly trying to maintain a data signal to the 3G towers. It maintains a connection but it doesn't have to negotiate for it almost at all...saves a lot of battery life.
Oh, and that Battery Calibration post is ridiculous. When you first get a phone just discard it fully then charge it up fully. Do it once every few months for the life of the phone and you'll find you maintain great battery life. Outside of that, keep it plugged in as *OFTEN* as you can to maintain longevity.
Also, according to your screenshot, your screen was on a *maximum* of 3 hours, but most likely around 2 1/2. That means the data connection most likely wasn't used much more than that, as well. That's very light use over a 24 hour period.
---------- Post added at 08:31 PM ---------- Previous post was at 08:31 PM ----------
smot13 said:
Well I thought it was a nice post. Jeez. Especially if you compare to most of the crap that comes up in the general section.
I couldn't find where he said "dont use 4g der". I believe the idea he presented was to turn off 3g/4g while you're on wifi. Do you need 4g AND wifi? Easy, common sense. Thumbs up.
Click to expand...
Click to collapse
Well, no, you wouldn't...but it turns off the LTE radio when on WiFi anyway...so that's a moot point.

One more tip:
If you use vibrate on keyboard, shorten it to as low as possible.
This is possible using SwiftKey
Sent from my Nexus S using XDA App

hotleadsingerguy said:
In addition, being in WiFi all day long can *really* improve your battery life. It's easily the biggest thing on your list. Why? Because the cell radio isn't constantly trying to maintain a data signal to the 3G towers. It maintains a connection but it doesn't have to negotiate for it almost at all...saves a lot of battery life.
Oh, and that Battery Calibration post is ridiculous. When you first get a phone just discard it fully then charge it up fully. Do it once every few months for the life of the phone and you'll find you maintain great battery life. Outside of that, keep it plugged in as *OFTEN* as you can to maintain longevity.
Also, according to your screenshot, your screen was on a *maximum* of 3 hours, but most likely around 2 1/2. That means the data connection most likely wasn't used much more than that, as well. That's very light use over a 24 hour period.
Click to expand...
Click to collapse
@ hotleadsingerguy
I'll leave 3G running for the next couple of days, see if there's any difference. Thanks for the info. Are you saying the screen on time reported by the OS is not reliable? If not, know of any apps that do report battery stats and usage reliably?
Galaxy Nexus I9250

@rbiter said:
This. Doesnt look like 4-5 hours screen time because the phone isnt awake enough.
Sent from my Galaxy Nexus using xda premium
Click to expand...
Click to collapse
Agreed that is not 4-5 hours of screen time. It is blatant in the graph u provided. Look at the screen and awake times. Here is mine with only 2 hours of screen time but over an hour of voice.
Sent from my Galaxy Nexus using XDA App

To push more, set the animation etc. to 0.5x in the developer options. This should reduce the cpu usage a little bit.
And turn off auto rotate as it consume quite a lot of cpu power. Most probably this is just a bug, there has been a report in the Google code bug yracking.

zoetrope said:
@ hotleadsingerguy
I'll leave 3G running for the next couple of days, see if there's any difference. Thanks for the info. Are you saying the screen on time reported by the OS is not reliable? If not, know of any apps that do report battery stats and usage reliably?
Galaxy Nexus I9250
Click to expand...
Click to collapse
Qhen you go to battery stats tap on the screen percentage. It will tell you exactly how long screen has been on.
Sent from my Galaxy Nexus using xda premium

republitarian said:
Agreed that is not 4-5 hours of screen time. It is blatant in the graph u provided. Look at the screen and awake times. Here is mine with only 2 hours of screen time but over an hour of voice.
Click to expand...
Click to collapse
I agree. I did not get a screenshot of my screen time when I took the screen pic of the timeline graph. I was relying on memory, but after comparing republitarian's pic which has roughly the same timeline span, looks like my memory failed me. Mine is somewhere between 2 - 3 hours of screen time as well. My bad.
Galaxy Nexus I9250

[Q] How's your Galaxy Nexus battery life?

I am just curious to know what other Galaxy Nexus owners are getting out of their battery.
Let me start by sharing mine.
During my sleep or when my phone is idle or when I know I am not using it for a long period of time, I switch my phone to 2G.
Below is a screenshot of my battery usage during a long period of idle (overnight when I am sleeping)
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I only switch it to 3G when I am actively using the Internet for surfing websites, Facebooking, Youtube, uploading photos or video.
Below is a screenshot of my usage from light to moderate to heavy.

I got just over 2 days out of mine with a mixture of wifi, 3g, calls, and general use with facebook, trillian and google+

I went into the bathroom with full charge and after I did my daily deed(s) I went down to 43% with brightness turned all the way down and only running xda app. wtf gives?
Sent from my Galaxy Nexus using xda premium

pcphobic said:
I am just curious to know what other Galaxy Nexus owners are getting out of their battery.
Let me start by sharing mine.
During my sleep or when my phone is idle or when I know I am not using it for a long period of time, I switch my phone to 2G.
Below is a screenshot of my battery usage during a long period of idle (overnight when I am sleeping)
I only switch it to 3G when I am actively using the Internet for surfing websites, Facebooking, Youtube, uploading photos or video.
Below is a screenshot of my usage from light to moderate to heavy.
Click to expand...
Click to collapse
This is EXACTLY the kind of battery life that I am getting.
Quality posting. Thanks

You guys must be on the gsm versions, the only people that aren't happy are the ones on 4g

I have the lte sgn and I would say my battery life is directly related to the screen on time.
The battery is usually completely discharged once the screen on time approaches around 3 hours, regardless of the total time it has been since the last full charge.
Sometimes I can get 20+ hours total life and sometimes I can barely get 5 or 6 hours of total life. Just depends on how fast I reach the screen on time "limit" so to speak of about 3 hours or so.
Sent from my Galaxy Nexus using XDA App

I have the 4g, and ill admit, when i got it the battery life was pretty bad. In part to newphonesyndrom, but stock is pretty bad in general
Currently running peter alfonso's bugless beast 4.0.3 and francico franco's kernel #6. Battery life has gotten wayyy better; so there is a light at the end of the stock tunnel. My phone goes into cpu sleep way more than before, and on the computer side of things, its efficient to the point that the screen uses 75% of battery compared to the 50% i used to see (more battery to screen means less everything else is drawing). And turning down the brightness, i kinda like the fuzzy whites, kinda gives it a paperlike texture
And turn off wifi if you are not actively using, it will just search endlessly. Same with turning off 4g if you are going to be in a 3g area for awhile
Sent from my Galaxy Nexus Bugless Beast 4.0.3 lte +franco#6

Verizon LTE version with 4G turned off. I think i may have .... issues

AgentSmith03 said:
Verizon LTE version with 4G turned off. I think i may have .... issues
Click to expand...
Click to collapse
How high is your screen brightness?
1h45m with screen on is most likely considerably longer than the time the other posters have had their screens on for.
EDIT: I'm saying this because most people with brilliant battery life tend to have LOW screen on time.

darrendm said:
How high is your screen brightness?
1h45m with screen on is most likely considerably longer than the time the other posters have had their screens on for.
EDIT: I'm saying this because most people with brilliant battery life tend to have LOW screen on time.
Click to expand...
Click to collapse
This was at Auto Brightness. I know I had the screen on for a long time, but is this what I need to accept from now on? That after a total time of 2 hours of screen ON time, the battery will be dead? Is the only way to get good battery life to turn off 4G and not use the phone that much? I would expect the phone to be able to survive for at least 3-5 hours even if the screen was on 100%, but maybe I am just being naive.
---------- Post added at 12:59 PM ---------- Previous post was at 12:47 PM ----------
pcphobic said:
I am just curious to know what other Galaxy Nexus owners are getting out of their battery.
Let me start by sharing mine.
During my sleep or when my phone is idle or when I know I am not using it for a long period of time, I switch my phone to 2G.
Below is a screenshot of my battery usage during a long period of idle (overnight when I am sleeping)
I only switch it to 3G when I am actively using the Internet for surfing websites, Facebooking, Youtube, uploading photos or video.
Below is a screenshot of my usage from light to moderate to heavy.
Click to expand...
Click to collapse
I am curious about your battery times. I would like to know your screen "ON" time for at least the light and heavy usage that you reported.
All the battery posts I have been reading on this forum seem to directly correlate to screen "On" time. I have a theory that the battery dies after 2-3 hours of screen on time regardless of most other factors. So some people may get 16-18 hrs of battery time, but the screen was only on for 2.5 hours or so. If you get a chance I would love to see some of your battery reports with the Display on time reported next to them.

AgentSmith03 said:
This was at Auto Brightness. I know I had the screen on for a long time, but is this what I need to accept from now on? That after a total time of 2 hours of screen ON time, the battery will be dead? Is the only way to get good battery life to turn off 4G and not use the phone that much? I would expect the phone to be able to survive for at least 3-5 hours even if the screen was on 100%, but maybe I am just being naive.
Click to expand...
Click to collapse
Well, less than 3 hours is pretty awful.
That's around what I get if I play games like GTA or Shadowgun for more than an hour.
I have the GSM GN so if you did turn 4G off you should have similar times as me. Which are on average 8-12 hours of moderate use including a lot of WhatsApp-ing, some music, some Facebook, some browsing, some calls and texts.
However playing games literally will drink my battery life away, so I tend to keep 3D games to a minimal when on the go.

Sorry if I am stealing the thread. I put this to anyone else with some battery screenshots. Take a screenshot of your display "ON" time and put it next to your total battery on time.
I would love to see if anyone is getting 3-6 hours of screen "ON" time coupled with 10-20 hours of Total Battery Time. Anyone?

AgentSmith03 said:
Sorry if I am stealing the thread. I put this to anyone else with some battery screenshots. Take a screenshot of your display "ON" time and put it next to your total battery on time.
I would love to see if anyone is getting 3-6 hours of screen "ON" time coupled with 10-20 hours of Total Battery Time. Anyone?
Click to expand...
Click to collapse
I seriously doubt it. That is something I genuinely miss about my iPhone 4--I could get 8+ hours of screen on time and well over a day of standby on a single charge.

Stadsport said:
I seriously doubt it. That is something I genuinely miss about my iPhone 4--I could get 8+ hours of screen on time and well over a day of standby on a single charge.
Click to expand...
Click to collapse
OOOH, we are taking that route huh? Well one reason why these lower than average battery times don't bother me that much is because I own 4 batteries for the Galaxy Nexus (2 standard, 2 extended) and can SWAP my batteries whenever I feel like it. Can you do that with your iPhone 4??? No, didn't think so.
P.S. I know you just threw in a iPhone screenshot for the fun of things. Thanks for the laugh!

Screen on time of a little over 3 hours and my battery is in the 30% range.
I definitely agree that the screen on time is the biggest factor. The battery seems to die once 3 or 4 hours of screen on time has been reached, regardless of how long the total life has been.
Sent from my Galaxy Nexus using XDA App

russ4h said:
Screen on time of a little over 3 hours and my battery is in the 30% range.
I definitely agree that the screen on time is the biggest factor. The battery seems to die once 3 or 4 hours of screen on time has been reached, regardless of how long the total life has been.
Sent from my Galaxy Nexus using XDA App
Click to expand...
Click to collapse
At least you are getting 3-4 hours. I am barely getting 1.5 hours of screen on time before my battery is close to dead. It's alright though, I battery swap regularly and I will figure it out eventually. Just keep turning stuff off till my battery life improves a bit.

Here's mine. GSM, stock 4.0.1.
Sent from my Galaxy Nexus using xda premium

gogol said:
Here's mine. GSM, stock 4.0.1.
Sent from my Galaxy Nexus using xda premium
Click to expand...
Click to collapse
I think that kind of confirms it for me. Your screen on time is in the 3 to 4 hour range and your battery is almost completely discharged.
Once the screen on time reaches the 3-4 hour range, the phone dies. It just took you 2 days to reach the 3-4 hour screen on time.
Sent from my Galaxy Nexus using XDA App

AgentSmith03 said:
OOOH, we are taking that route huh? Well one reason why these lower than average battery times don't bother me that much is because I own 4 batteries for the Galaxy Nexus (2 standard, 2 extended) and can SWAP my batteries whenever I feel like it. Can you do that with your iPhone 4??? No, didn't think so.
P.S. I know you just threw in a iPhone screenshot for the fun of things. Thanks for the laugh!
Click to expand...
Click to collapse
Whoa buddy, ease off the haterade. I wasn't trying to start an argument or anything. I sold my iPhone 4 to buy a Galaxy Nexus, and I'm very happy with my decision. But the reality is the i4 got much better battery life, and I posted a screenshot (from my device) to support that. Swapping batteries wasn't necessary, and carrying around 4 doesn't exactly help your case.
No one is attacking your mother. Chill.

Stadsport said:
Whoa buddy, ease off the haterade. I wasn't trying to start an argument or anything. I sold my iPhone 4 to buy a Galaxy Nexus, and I'm very happy with my decision. But the reality is the i4 got much better battery life, and I posted a screenshot (from my device) to support that. Swapping batteries wasn't necessary.
No one is attacking your mother. Chill.
Click to expand...
Click to collapse
If you are rooted.....install another kernel....it will improve your battery life
Sent from my 4g GUMMY Nexus

[UPDATE 05/04][DAY 5+6][REVIEW] 3500 mAh extended battery

Update: As stated in one of my posts, I will be posting updates one a day for the first week, one every two days for the rest of the first month, and then one a week (hopefully every Sunday) for the rest of the months. Look forward to it
Review of 3500 mAh Extended Battery for Samsung Galaxy S II​
Changelog:
Code:
05/04/12 - Updated with Days 5 & 6
03/04/12 - Updated with Day Three and Day Four
01/04/12 - Updated with Day Two
I bought an extended battery (3500 mAh) from eBay for about $7 CAD, and it finally arrived the day before yesterday.
When I put it into my phone it was already at 74%. After charging it overnight, I started using it the next day at around 7:30 AM.
Before I post the screenshots of my extended battery (Edit: if anyone is wondering, data is usually always on, and brightness is set to Auto), let's have a look at the original stock 1650 mAh Samsung battery life:
Stock Samsung 1650 mAh Battery:
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"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
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With some simple math, at 9% remaining, this would have lasted me just over 7 hours before reaching 0%.
Conditions of usage: As you can see, I like to use my phone a lot with 76% screen time . I barely used my data/wifi. Data was on but not active, and most of the screen time was spent on Moon+ Reader.
Time lasted: On an average day, (I use data a lot and I play games) I would get about 5 h 45 min or less out of my phone. As you can see from the screenshots above, this wasn't really an average day so it lasted longer, which is reasonable as I did not use data very much.
ROM info: Westcrip's Resurrection Remix ICS Pro 1.0 with the kernel that comes with it.
Now let's compare this with the battery life of the 3500 mAh battery.
3500 mAh Extended Battery
Day 1 [30/03/12]:
Time lasted: A whopping 9 hours 20 minutes.
Conditions of usage: As you can see I was connected to wifi most of the time, and unlike the previous screenshots, I was using wifi/data a lot. I don't know why it says screen time is only 28% though because as you can see in the second picture I had "screen on" a lot.
A charge cycle has Battery Monitor reporting this battery's estimated/measured mAh to be 3074 mAh.
Only 500 mAh difference from advertised capacity, but not bad for $7, if I do say so myself. And this is only the first charge/discharge cycle, so I expect an increase in a couple days.
ROM info: AOKP (bezke's), with Siyah Kernel for ICS beta 7.
Day Two [31/03/12]:
This is the result of the second day of using the extended battery:
Time lasted: 8 hours and 30 minutes.
Conditions of usage: Now as you can probably tell I've used my phone a lot more today, with screen on at 40%. I had a lot of free time, so I was pretty much constantly on my phone, using data and also listening to music (through external speakers just below medium volume). Still not bad compared to stock battery. Data was always on, and brightness set to auto, and music was playing through the speakers for about under two hours.
ROM info: AOKP (bezke's), with Siyah Kernel for ICS beta 7.
Day 3 [01/04/12]:
Now a bit of a funny/interesting story here. First, let's see the screenshots and I'll explain:
Seems pretty standard here. But I decided to turn off wifi and data and keep using it a bit, just for texting and reading ebooks. And when the screen was off, I managed to get it into ~97% deep sleep. So, this was the final result before the battery died.
Almost a whole extra hour usage, and here is CPU Spy's report on Deep Sleep. However, this is not standard. If you're like me, you like using your phone a lot. So we won't count this last screenshot.
Time lasted: 9 hours and 6 minutes.
Conditions of usage: Standard again as usual, but screen time is a bit higher. Unfortunately as a user requested I forgot to take a screenshot of the screen time. I will do it for the next day though. In the meantime, get out your calculator, haha.
ROM info: HyDrOG3N-ICS (AOKP), with latest codeworkx kernel.
Day 4 [02/04/12]:
This is the fourth day result.
Screen time screenshot included as requested.
Time lasted: 7 hours 35 minutes.
Conditions of usage: Today's usage was not very standard at all. I used data almost constantly today, and played around with Cerberus which also consumed a bit of battery life through the GPS and data/wifi. Phone got pretty hot through the constant usage which I hear drains battery faster. I also watched some videos and flash videos too.
ROM info: HyDrOG3N-ICS (AOKP), with NEAK 2.0.1 kernel.
Day 5 [03/04/12]:
Unfortunately there won't be any screenshots for today. My phone crashed and somehow the battery usage got reset, so there's no point. There will still be a report for today as per usual of course.
Time lasted: From 7:30 AM to 4:30 PM, the battery lasted me about 9 hours.
Conditions of usage: Not much to say really. Conditions were normal, and so was the time the battery lasted. ~9 hours, occasionally less, seem to be becoming standard.
ROM info: HyDrOG3N ICS (AOKP) with SiyahKernel v3.0rc2.
Day 6 [04/04/12]:
Here's the report for Day 6. And as you will see, wow, the results aren't standard at all. Also included is Battery Monitor's report on the measured mAh along with details for Screen time.
Time lasted: 7 hours and 2 minutes.
Conditions of usage: 7 hours isn't very standard at all. It's a pretty wide deviation from the norm, but my explanation for this is that I was very very bored. As you can see from the "Screen" time, it says 48% but I actually used it for 5 hours and 6 minutes, which is an astounding 72.5% of screen on time. I amaze myself sometimes. So data was always on but not constantly active, and I played some flash videos and even a flash game, and I was testing out GPS on HyDrOG3N ICS (which sucked at getting a lock-on) so all these factors drained my battery. I also watched some videos on my phone as well.
ROM info: HyDrOG3N ICS (AOKP) with SiyahKernel v3.0rc2.
So in conclusion:
This battery seems well worth it. I am very satisfied with the battery life, and if you are a person who likes to play with his phone a lot (games, Reddit all day, browse the internet), then I recommend this phone as it will last you a good amount of time without needing a charge.
I will be continuing to post updates and screen shots this week as I continue using this battery. Subscribe and look forward to it!

Reserved. I don't know how many more posts I'll need, so I'll reserve another just in case
Sent from my GT-I9100

Reserved 2.
Please let me know about your experiences with (any of) your extended batteries!
Sent from my GT-I9100

Testing out mine I bought for $15
Sent from my GT-I9100 using xda premium

hatrepl appear
thank you for the update on this. i am quite convinced now not to buy batteries from china

I bought one of these 3500mah batterys for $8.5 from Dealextreme and I am really happy.
My usage at work at times would be consistent to the point of telling the time by the battery percentage so I had a good baseline comparison test to do.
Under the stock battery running the FM Radio for 4 hours with no other use (I work midnights so no calls or anything) would consistently drain 21% of my battery.
With the 3500 it only drains 10% in the same time.
That works out to the battery working as advertised, slightly of double battery life for a battery that is slightly over double size.

It looks good for now, but please come back with a review in 3 months and we'll see how it fares

What's the font used here?

I'm using an extended 3500mah Spider-Foot since in August 2011.
My battery monitor measures it between 3100 to 3200 mAh. After 8 months of use I'm pretty happy. Costed $10 -
Maybe I'm missing the point why I should buy a 10x priced battery with approx same capacity?
Does it increase phone speed?
Well there must be a reason but I haven't figured it out yet.

Original post updated with day 2!
VAXXi said:
It looks good for now, but please come back with a review in 3 months and we'll see how it fares
Click to expand...
Click to collapse
I will! I guess since you asked, I'll have constant updates for three months.
I plan to do one a day for a week, and then maybe one every two days for the rest of the month, and then do one a week for the remaining months.
dpi295 said:
What's the font used here?
Click to expand...
Click to collapse
SegoeWPN Semilight. It's the font family used in Windows Phones. I love it - it's very clean and looks great.
boypinoy18 said:
thank you for the update on this. i am quite convinced now not to buy batteries from china
Click to expand...
Click to collapse
This battery is from China (Hong Kong), man. It's very good and I recommend you get it.

How long is your screen on for?

Kaze105 said:
How long is your screen on for?
Click to expand...
Click to collapse
I don't know if it's accurate, but the "Screen" percentage should tell you. Usually around 20% to 50% of the time my screen is on.
Sent from my GT-I9100

waylaidwanderer said:
I don't know if it's accurate, but the "Screen" percentage should tell you. Usually around 20% to 50% of the time my screen is on.
Sent from my GT-I9100
Click to expand...
Click to collapse
Thats why im asking how long. % doesnt really mean anything. Click the screen when you are viewing the battery stat. It should tell you how long it has been one for.

Well I just checked, and the percentage corresponds with the number of hours I've been on battery. No seriously, I went ahead and did some math and it was pretty close to the actual screen time value I get when I click it
So while I don't have a screenshot of screen time for Day 2, by my calculations, with 8 and a half hours and 40% screen on time, the actual number of hours is about 3 hours and 30 minutes.
Sent from my GT-I9100

Either your battery isnt calibrated or the battery is crap when compared to:
http://forum.xda-developers.com/showthread.php?t=1491736
Or I guess it could just be something else.

Kaze105 said:
Either your battery isnt calibrated or the battery is crap when compared to:
http://forum.xda-developers.com/showthread.php?t=1491736
Or I guess it could just be something else.
Click to expand...
Click to collapse
Look at how little time his phone is awake and his screen is on. That's maybe like 5% total out of 5 days, which is about 6 hours total. My phone gets that in one day if I'm really bored so it's still about the same amount of drain.
I use my phone a lot, as my sole entertainment device. Games, movies, Internet, whatnot. My usage is more realistic than his, however impressive 5 days is. I'm sure if I barely touched my phone I would have the same results. (97% deep sleep is usually achievable unless I'm using it)
Sent from my GT-I9100

Good idea, I hope you can keep the updates coming. Im convinced to not buy batteries for expensive devices from China. But if you get good results i might reconsider. Thanks and good luck!

Inkness said:
Good idea, I hope you can keep the updates coming. Im convinced to not buy batteries for expensive devices from China. But if you get good results i might reconsider. Thanks and good luck!
Click to expand...
Click to collapse
I hope I can too. I hope you find my review informative!
Anyway, original thread updated with Day 3 & 4.

Updated with Days 5 and 6, guys. Hope you find this thread informative and/or useful!
If you have any suggestions or anything you want to see please let me know.

I suggest u include cpu spy screenshot for every day because i can achieve this using stock battery...
Hydrogen-ICS 2803 + Siyah 3b7
No UC or UV
Brightness at 30%
Wifi + data(2G) always on
Im only using my phone for tapatalk,web browsing,facebook,twitter + some youtube so my cpuspy showed that im on 500mhz most of the time...
5 hour of 500mhz and 5 hour of 1200mhz gonna make a huge difference even the screen on time is the same...

Idle battery drain

I've been noticing my battery drain about 3% on idle after taking it off charge. It's really annoying as 3% to me is too much. I've attached the battery screens to this post below.
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"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}

Device Idle is responsible for 1.32% drainage from your battery. No problem here. If I'm misunderstanding, please rephrase.

Aerowinder said:
Device Idle is responsible for 1.32% drainage from your battery. No problem here. If I'm misunderstanding, please rephrase.
Click to expand...
Click to collapse
Actually This is what I was referring to, when using the phone the battery drains nice and slow. better than I would expect to drain during screen on time. But when I take it off charger at 6 am and leave it in place and come back at 11 or 12 am I lose about 10% which shouldn't be normal imo. See below:

aamir123 said:
Actually This is what I was referring to, when using the phone the battery drains nice and slow. better than I would expect to drain during screen on time. But when I take it off charger at 6 am and leave it in place and come back at 11 or 12 am I lose about 10% which shouldn't be normal imo. See below:
View attachment 1608439
View attachment 1608440
Click to expand...
Click to collapse
I'm not sure if that's normal but I loose that amount in 2hours and 45 minutes idle
Sent from my Rooted Gameboy

aamir123 said:
Actually This is what I was referring to, when using the phone the battery drains nice and slow. better than I would expect to drain during screen on time. But when I take it off charger at 6 am and leave it in place and come back at 11 or 12 am I lose about 10% which shouldn't be normal imo. See below:
View attachment 1608439
View attachment 1608440
Click to expand...
Click to collapse
looks to me that ur messaging app is going crazy...everything else looks normal.

what can I do to fix this? Its annoying. And no this shouldn't be normal, I like everything about the stock rom and wouldn't like to root just for the hell of it. But this actually has me thinking, (still leaning towards no as I still get thru the day) but would like to get if fixed non the less.

I noticed the same thing. When i unplug it in the morning it drains faster. But when im waiting for the fully charged notification to pop up then unplug it lasts longer. Its strange, maybe has something to do with charger. Do they have "safe mode" after fully charged to prevent overcharging or something?
Sent from my Galaxy S3 using neighbors wifi

1slow4G said:
I noticed the same thing. When i unplug it in the morning it drains faster. But when im waiting for the fully charged notification to pop up then unplug it lasts longer. Its strange, maybe has something to do with charger. Do they have "safe mode" after fully charged to prevent overcharging or something?
Sent from my Galaxy S3 using neighbors wifi
Click to expand...
Click to collapse
I always wait for the battery fully charged unplug charger notification to pop up before unplugging. So that doesn't seem to be the problem.

Faster drain is normal from 100% to 90%. It was explained to me that when you leave the phone on the charger overnight it charges to 100% and then allows it to drain some, then starts recharging again. You may really be at 95% when you pull it off the charger despite what the phone is showing.

First, get Better Battery Stats. It can help you figure out whether something is eating your battery abnormally.
Play store link
Also, I highly recommend GSam Battery Monitor It might be a little easier to understand than BBS, but I like and use both.
Finally, read this: Your battery gauge is lying to you!

futuremonkey said:
First, get Better Battery Stats. It can help you figure out whether something is eating your battery abnormally.
Play store link
Also, I highly recommend GSam Battery Monitor It might be a little easier to understand than BBS, but I like and use both.
Finally, read this: Your battery gauge is lying to you!
Click to expand...
Click to collapse
Im not rooted so I'm guessing that BBS wont work for me too much. Neither is GSAM Battery Monitor.

aamir123 said:
I always wait for the battery fully charged unplug charger notification to pop up before unplugging. So that doesn't seem to be the problem.
Click to expand...
Click to collapse
Oh ok. Nevrrmind then
Sent from my Galaxy S3 using neighbors wifi

Go to settings/wifi press menu and select advanced
set NEVER keep wifi on during sleep.... it cut drain to much lower level for me.

ndkone said:
Go to settings/wifi press menu and select advanced
set NEVER keep wifi on during sleep.... it cut drain to much lower level for me.
Click to expand...
Click to collapse
already on that setting also today I left the phone in my car for a few hours (after sunset) and when I came back the phone drained from ~50% to 0% and was very hot.

aamir123 said:
Im not rooted so I'm guessing that BBS wont work for me too much. Neither is GSAM Battery Monitor.
Click to expand...
Click to collapse
both apps are working without rooting.
BBS should be the best app to find out which process is your problem.

This phone gets hot randomly, guess it was just humid in your car. I feel like all this battery talk is useless android has never been good with battery life. This phone is huge and powerful so battery drain is going to happen. Also depends how long you had battery, how much you over charge battery. I read in several places that after 3 to 5 months of use batteries tend to drain faster.
Your best bet if it's such a big issue is getting another battery with a separate charger. Honestly in this day and age these smartphones should come with an extra battery lol
Sent from my SGH-T999 using xda app-developers app

daxecutioner24 said:
This phone gets hot randomly, guess it was just humid in your car. I feel like all this battery talk is useless android has never been good with battery life. This phone is huge and powerful so battery drain is going to happen. Also depends how long you had battery, how much you over charge battery. I read in several places that after 3 to 5 months of use batteries tend to drain faster.
Your best bet if it's such a big issue is getting another battery with a separate charger. Honestly in this day and age these smartphones should come with an extra battery lol
Sent from my SGH-T999 using xda app-developers app
Click to expand...
Click to collapse
My battery and phone are both less than a month old, as for humidity that doesn't drain a battery from 50-0% on idle in a few hours. Also I've posted new screenies, messaging used ~20% without being used and stats showing 0s awake. maps did something similar despite disabling all location services and unticking all boxes in the gps submenu. My issue isn't bad battery life, its idle battery life. I shouldn't lose 2% per hour or more when I unplug and go back to sleep.