Database Users

[Q] I get about 4 hours of usage out of a full charge - how about you?

I have been on here a couple of times complaining about my lousy battery. Well, today I decided to see exactly how far I can take this thing before it conks out on me. Here are my results.
The phone up-time was just over 19 hours, with 14% battery left. (I took my results at 14% because I didn't want the phone turning off on me thus losing all data.) About 49% of the battery was used by the screen, which was on for a total of 3 hours and 20 minutes during this 19 hour period. The rest was split up among other activities, but the most notable/concerning area is 43 seconds of voice took up almost 2% of total battery usage.
I could probably pull out another half-hour or so usage before the phone's battery totally dies, so my final number is 4 hours of usage out of a full charge. This is total usage, i.e. the screen was on for 4 hours.
The phone was at lowest brightness all day except for 10-15 minutes where I had it on full 'cause I was using it outside. I am not using any CPU throttling apps, or such. Background is not fully black. I use one widget, rest are icons. I have Advanced Task Killer which I routinely use to kill tasks, but to be completely honest, unless there is a rouge task ATK does not increase battery life by much. Phone was on 3G primarily, although there were times during the day when I was on EDGE because of weak signal.
All in all, the battery on the Vibrant is pathetic for what it has (Super AMOLED, 45 nm, etc.) but I am glad I can at least last a day. Hopefully Samsung has addressed battery issues in Froyo.
Feel free to post your results on how long you can make your battery last below, so we can all get a better idea. Please do not post "my battery lasts XX days" - give details on your usage, like how I mentioned the battery was at 14% after 19 hours up-time, but actual usage was 3 hours and 20 minutes. Often times it seems like many people brag about how "great" their Vibrant's battery is, but really they rarely use the phone all day hence the "great" battery life.

I completely feel your pain. I had the same issues with my vibrant also. I personally do not believe it is the battery any more because after I applied the ryanza one click lag fix my battery life practically tripled. I kept a very close eye on my usage and settings for the first few weeks. I would get about 12 hours out of a full charge and I would barely use the phone. Frustrated me to no end because I would hear people say that 12 hours with a powerful phone like vibrant is expected. To me it was not acceptable.
I never changed any settings or installed any programs after doing the lag fix but it certainly had a drastic effect. Ill get more statistics when I get home, im at work right now.
Sent from my SGH-T959 using XDA App

I got a good deal on eBay for a 2batteries and a charger for 10 bucks . . Go find out. And about the battery I get around 3/4 day of pretty heavy use, wifi on all day and such.
Sent from my SGH-T959 using XDA App

get Juice Defender if you want to squeeze even more out of it
but having the display on almost 4 hours....that's gonna suck the battery no matter what phone you have

mine has superb battery life. I am always confident it will get me pass the day and more. obviously, if I game and web a lot, it will drain faster. For my typical day, it's perfect. I went on to over 2 days with this charge. What an awesome battery!

I get about 5 hours of usage. On wifi it goes up a like a hour .

hydrogenman said:
get Juice Defender if you want to squeeze even more out of it
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Have to agree with this. I tried it out and got quite a boost. I didn't keep as good of details as the OP on my battery use but prior to juice defender a was struggling to make a day. Now a day is not a problem. My typical usage is probably pretty high, lots of internet, lots of tinkering right now plus working on morphs and things, I do keep my screen all the way down except when outside (rarely use my phone outdoors so not much of that), no widgets, no task killer. When I installed juice defender I used the stock settings with the exception of allowing gmail and chat to sync anytime. Juice defender says I'm getting an average of 1.7x the battery life. I think almost all of that comes from when the phone is asleep.
Edit. Checked on details.
Pulled my phone off the charger at 6 am it was at 100%. Used to to do some reading on my way to work (about 30min on the train) worked on some morphs, checked some emails, downloaded some stuff. I'm at 82% and it's 12:20.
Cell standby 39%
Display 33%
phone idle 23%
Various 5%

I use my phone for quite a bit during the day and pull about 13 hours before it starts blinking at me. I personally have zero problems with that amount of battery life from a device of such caliber. My best friend was complaining about her battery in her Vibrant and like I tell everyone else, it's probably some rogue app somewhere. She didn't believe me so we swapped batteries 3 days ago and I still get the same usage times out of her battery as I did mine and her battery life has improved significantly as well.
I don't know what is is that people are doing to get 4-5 hours but 13+ with average use (text, moderate browsing, syncing all day, screen at full brightness all day) is to be expected with this phone. I will post a screenshot of consistency over the course of this weekend to visualize my point.
Also I do not use a task killer of any kind except the Android built in one and I removed hers as well

boodies said:
mine has superb battery life. I am always confident it will get me pass the day and more. obviously, if I game and web a lot, it will drain faster. For my typical day, it's perfect. I went on to over 2 days with this charge. What an awesome battery!
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You mean if you actually use the phone it will drain a lot faster. Your post is a perfect example of what I mean when I said people post very misleading results. For those ~40 hours that your Vibrant has been up, your display has only been on 1, maybe 2 hours (hence only 8% battery usage). Your result is not accurate at all - you aren't using the phone. Anyone can get great battery by letting it sits for hours on in.

hydrogenman said:
get Juice Defender if you want to squeeze even more out of it
but having the display on almost 4 hours....that's gonna suck the battery no matter what phone you have
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Click to collapse
Thanks I will look at Juice Defender, but I am not too sure what it will do to help improve my battery which I am not doing already. (I leave GPS off, WiFi off when im not using, have applied lagfix, etc.)
The Droid X is known to get 7-8 hours; and considering the Vibrant has power-friendly hardware, the Vibrant should be getting the same.

bdveteran18 said:
I use my phone for quite a bit during the day and pull about 13 hours before it starts blinking at me. I personally have zero problems with that amount of battery life from a device of such caliber. My best friend was complaining about her battery in her Vibrant and like I tell everyone else, it's probably some rogue app somewhere. She didn't believe me so we swapped batteries 3 days ago and I still get the same usage times out of her battery as I did mine and her battery life has improved significantly as well.
I don't know what is is that people are doing to get 4-5 hours but 13+ with average use (text, moderate browsing, syncing all day, screen at full brightness all day) is to be expected with this phone. I will post a screenshot of consistency over the course of this weekend to visualize my point.
Also I do not use a task killer of any kind except the Android built in one and I removed hers as well
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When you say 13+ hours, do you mean total up-time or total usage time? Because, as I mentioned in my post, my total up-time was ~19 hours, but usage was actually ~4.

DarkAgent said:
When you say 13+ hours, do you mean total up-time or total usage time? Because, as I mentioned in my post, my total up-time was ~19 hours, but usage was actually ~4.
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I apologize for being unclear before. total usage time is about 6.5 hours of consistent usage. Such as watching movies, playing games, and browsing the web. I will post some battery usage screenshots a little later.

bdveteran18 said:
I apologize for being unclear before. total usage time is about 6.5 hours of consistent usage. Such as watching movies, playing games, and browsing the web. I will post some battery usage screenshots a little later.
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Thanks for clearing that up! Well, it sounds like you are fairing better than me, but without actual data it is hard to say.

Oh, and an FYI: I just called up T-Mobile and had them send me a new battery. FWIW, I am not being charged anything (not even shipping) and I don't have to send back my current battery. I love the retention department .

Can someone post up what they do/what settings they use for juice defender? I installed it but I really don't see how it could save me any more battery seeing that I keep wifi, gps, and all that off, plus my screen is on the lowest setting at all times

Hi all,
What I found out that works best for me is, no task killer, no juice defender, lowest display setting possible, and turning off 3g. 3g ready drains the battery. Task killers are pretty worthless. Do some research on that topic. Android kills programs all by itself. And task killers run in the background, using up battery. My phone is rooted, so I run autostarts to control what starts at boot. My uptime isn't great, but its adequate enough to last from morning to night. I do agee that the battery life when using the phone itself for voice calls is sub part at best. I do believe froyo will help with a lot of these problems. Just my 2¢.
Sent from my SGH-T959 using XDA App

DON'T use task killer. Vibrant has really good system resource management. With task killers constantly killing core system processes, the phone has to use more power to keep restarting them.
You can read more about it here: http://geekfor.me/faq/you-shouldnt-be-using-a-task-killer-with-android/
And only turn on active sync for apps that you absolutely need to have them syncing all the time.
This should make your phone last for a whole day with decent usage. If you are still getting very short up time, you probably have a bad battery. Call T-Mo and ask for a replacement.

It all depends on usage. The first days when I got my Vibrant, I was downloading apps all day, or browsing websites, so the battery barely lasts for a day. I usually leave my phone plugged in to my laptop when going to sleep, and set the laptop to auto-shutdown in 4 hour, so the phone gets unplugged at about 4:30 am. With that heavy usage, I needed to recharge at about 7 pm.
However, now that I'm not playing with it that much, the battery life improves greatly. Now I usually do 10-20 text messages and about 30 minutes voice call everyday, also some browsing on the xda forum, and maybe reply several emails. The battery is usually at 40 percent at 10 pm. The only thing I can complain about is that with 40% battery left, I don't want to do a complete recharge, but it won't last the second day either.
Sent from my SGH-T959 using XDA App

DarkAgent said:
Thanks for clearing that up! Well, it sounds like you are fairing better than me, but without actual data it is hard to say.
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I forgot to take pics lol. (busy with my fantasy draft). I will take some today. Rebooting my phone right before I leave for work and some throughout the day.
It still will be hard to say why my battery life exceeds yours but you will at least be able to compare the two.
Sent from my awesome Vibrant using XDA App

I get around 5 hours display. Using wifi sporadically, juice defender paid version, lowest brightness. Our screen is too bright. Lol on lowest it looks like the evo's middle.
Sent from my SGH-T959 using XDA App

60+ hours 1 battery

I'm using galaxy rom and kernel di18. If there are comparable oc stats please post screen shots and type of rom and kernel.
Sent from my SPH-D700 using Tapatalk

jbadboy2007 said:
I'm using galaxy rom and kernel di18. If there are comparable oc stats please post screen shots and type of rom and kernel.
Sent from my SPH-D700 using Tapatalk
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Wow thats amazing... and your the first to make such a claim and have proof to back it up! @ days and change... wow! (hope its not photo shopped)... also running live wallpapers etc... very impressive! Still with 30 percent batt left?! What batery meter are u using btw... damn I think i might try that combo on my epic now...lol!
nice share!
but looks like very mild usage... what kind of batt do u get with moderate and heavy usage?

this week I'm learning how to flash roms, my phone got SIX hours with NO USE today. I'm fed up with it.

jbadboy2007 said:
I'm using galaxy rom and kernel di18. If there are comparable oc stats please post screen shots and type of rom and kernel.
Sent from my SPH-D700 using Tapatalk
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Sorry, I cannot do screenshot 'cos my phone is not rooted and complete stock everything, but as I posted in some other battery related thread my phone hold to 2 days 12 hours and 30 min with 3% left over Columbus day weekend.
BTW, TWS was over 50%

battery meter is in blue minimalist theme and not photo shopped i have posted other screen shots with 45 hours and so on. stud muffler if you cant go download shoot me to provide screen shots i dont believe you are getting that battery life especially because the sprint apps use the most juice and the galaxy rom is way more conservative scaling on the cpu. also no one else on stock is making the same claim as you are with that usage dont make claims you are not able to back up with proof this is android not apple. everything can be verified very easily. you do not need root for shoot me. if im not at my house where i have wifi my battery gets drained really fast on 3g with no data usage kinda sucks.

I see that the Display is at 11%. What kind of usage is this? The math says that is about 4.5 hours of being "on". I can see with the right setup those sorts of numbers being attainable. The difference being actually using the device a lot would kill more battery. What exactly is your usage pattern?
Edit: Whoops I didn't read all the way. Wifi is a big plus for battery life. I'm tempted to try out the Galaxy rom now.

jbadboy2007 said:
battery meter is in blue minimalist theme and not photo shopped i have posted other screen shots with 45 hours and so on. stud muffler if you cant go download shoot me to provide screen shots i dont believe you are getting that battery life especially because the sprint apps use the most juice and the galaxy rom is way more conservative scaling on the cpu. also no one else on stock is making the same claim as you are with that usage dont make claims you are not able to back up with proof this is android not apple. everything can be verified very easily. you do not need root for shoot me. if im not at my house where i have wifi my battery gets drained really fast on 3g with no data usage kinda sucks.
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so whats the point of this thread? I can do this too at my house, just hook up to wifi and the battery lasts forever, its the 3g that drains it as you said.

That's pretty amazing...I'm wondering what the 1 battery is? Car battery perhaps? LOL
I think the most I ever got with light/almost no use was around 19 hours with about 10-13% remaining battery. That's just a guess though...I wasn't trying to test the battery...just didn't talk to anyone for a day or use the phone for anything in general.

Somethings not right. Since when does the screen eat up less than any other process? Thats the top drain on all other epics

rjmjr69 said:
Somethings not right. Since when does the screen eat up less than any other process? Thats the top drain on all other epics
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If you seldom use the phone for anything, the proportion of power used by the screen goes down, and so does total battery drain. Then you can brag that you got 60 + hours.

boomerbubba said:
If you seldom use the phone for anything, the proportion of power used by the screen goes down, and so does total battery drain. Then you can brag that you got 60 + hours.
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He still had about 4.5 hours of screen on time which is pretty damn good if you ask me. In my daily use I get around 13 hours of battery with a screen on time of about 2 hours, if I'm reading a book using kindle I get 9 or 10 hours with about 3 hours of screen on time.....so he has a higher screen on time than me and still gets like 2x more battery than me (I've seen his other screenshots) on average
Sent from my SPH-D700 using XDA App

I dont see where you got 4.5 hours of the screen being on
Sent from my GT-I9000 using XDA App

i also don't know where people are getting 4.5 hours of screen on time from the screenshot. It's not 11% of the total battery time on. It's 11% of the batteries overall use. It doesn't really have anything to do with the total time unplugged. Some fuzzy math going on heh.

I was at 42% battery when I just plugged in my phone tonight so it's charged up for work tomorrow.
It's not that hard to get these kind of numbers with light use.

@styckx:
How come yours saya "Unplugged for" instead of "Since unplugged"? Not saying its fake or anything, just never seen that before lol
Sent from my Epic 4G using XDA app.

Because in the SS it's charging and changes to "unplugged for". It saves the amount of time it was last unplugged for. If I unplugged it then it will say "Since unplugged" and reset the timer.
Yeah, not shopped, I'm not looking to score e-cred over cell phone screenshots.

I use my device so much my display & voice calls generally wear down battery in 6 hrs tops. used to be 10-12 but since di18 it sucks .. might be both updates idk. I'm anticipating some good reads to learn up on flashing & such so maybe ill be able 2 get better life. my browser speeds suck

Looks like a Day or Two of Airplane mode,
Im rooted and tweaked and get about 20 good hours of use-able time

I never understand y ppl brag about standby battery life. not saying op is showing stats based on that but to me its a pointless test when ppl do it that way.

Not impressed.
Sent from my SPH-D700 using XDA App

Help me understand the poor battery life on Fascinate

I have a work issued iPhone 4 and the fascinate. I fully charged both phones and put them on my desk at 3pm yesterday and did not use them at all. This morning the iPhone was at 98% charge and Fascinate was at 30%... Both phones sync with a exchange account and both have very good signal strength at my home.
I've checked the battery usage on Fascinate and the top 4 items are: Display 49%, Media server 15%, Cell standby 14% and Phone idle 9%. How can standby and idle use so much battery? I also used task manager and killed all running programs yesterday.
So what could be causing this? I can literally watch the battery percentage click down 1% for every couple of minutes of use.
Running Blackhole v1.3 with JT's Stable 11/11 kernel.

After a full day's worth of average use my battery (off the charger at 9am, on the charger at ~1am) My battery rarely drops into the orange.
You mentioned you had a task killer, I'd blame that first and foremost. Also, I think there was something inherently wrong with your test... if a screen that was off used 50% of the battery...
It's also entirely possible that you're just trolling, because I know from roomate experience that his phone if left alone is not at 98% battery after 24 hours. Also, APPLE lists the standby time as up to 300 hours. That would mean that at best you'd be looking at an ~8% drop after 24 hours.

That 15% used by the media server probably didn't help much. What all was your IPhone running in the background...oh wait, nevermind.

I dunno about the iphone but I feel you on the fascinate. I left mine off the charger, no screen on, with airplane mode on, and the battery dropped 50% in 7 hours. With absolutely no use. I'm lucky to get 7 hours during the day actually using the phone. Three display is always around 70% usage of the battery even though I have brights all the way down and always turn off the screen.
Sent from my SCH-I500 using XDA App

I use Ultimate Juice Defender and I take my phone off the charger at 6:30 a.m. and by 5:30 p.m. I am usually at 80-90%.

Not sure, you might just have a bad battery. I have been off the charger for almost 7 hours now (early day). I have been messaging (google talk and sms) had WiFi/BlueTooth/GPS running constantly I rarely turn them off.
Have been using google maps off and on for at least 20-30 minutes as well as voice. And about 45 minutes of phone calls.
For me:
Display 29%
Standby 26%
Idle 16%
android 12%
and then bluetooth, LauncherPro, OS and Google rounding out the remaining quantities.
Oh forgot and a solid 20 minutes of angry birds

i use a task killer but i allways set system apps to ignore except camera and google maps and autokill stuff like file explorer, root explorer, games and stuff.
I get up at 4am use my phone pretty often little of everything and can make it threw a day getting homr at 5pm might be 16-20% battery left but still good imo.
Removing bloat might help?

I went to lunch and played with the phone while waiting for the food. Just red some news and surfed the web a bit. Before lunch the battery was at 34% now its at 16%, I think there definitely is something wrong with my phone. I wonder if a different kernel would help.

Try resetting battery stats and reconditioning the battery. There's no way it should drop more than a handful of percent asleep in airplane mode... Maybe one per hour.
Sent from my Voodoo-powered Fascinate with XDA

How would I recondition the battery? I've reset the stats with a fresh battery before and have tried different kernels. I have two batteries and it's the same with both. I even took it to verizon but they said there was nothing wrong with it even though it dropped 30% on their test call.
Sent from my SCH-I500 using XDA App

I'd definitely say its just a bad battery. My fascinate stock destroys iphone battery life. With a UV kernal it at least doubles iphone battery life. My work issues iphones so I get a daily comparison.
Sent from my Samsung Galaxy S

I would say battery as well, my phone has been off the charger for 20 hours now and I'm at 50%. It's my work phone so its a stock kernel.
Sent from my SCH-I500 using XDA App

I was in your boat. The first fascinate I had would be unplugged at 6:30am and dead at 3pm with very little usage. I hated this phone. I got juice defender and it would last until 6 or 7 with very little usage, and as I used the phone I would watch as the battery rapidly ran dry. I got two other fascinates and it was the same issue. Then I got the one that I have now and it uses almost no power in standby. with juice defender and it being on idle, I can get almost 2 days out of 1 charge. I know it sounds ridiculous to you, with your experiences and it being a smartphone, but samsung has done some kind of magic here. Keep taking your phone back until you get one that uses very little battery on standby. Apparently there are a lot of units with bad batteries. As of this writing, with Ultimate Juice, my phone has been off the charger since 5:30 this morning, did some flashing, which uses the battery open throttle, installed 5 apps, played angry birds for about 35 mins and I am at 91% at 10:09

Well my 30 days are up, verizon found nothing wrong with it and I have 2 batteries.
Sent from my SCH-I500 using XDA App

Sithben24 said:
Well my 30 days are up, verizon found nothing wrong with it and I have 2 batteries.
Sent from my SCH-I500 using XDA App
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Try a different big red CSR, and if you fail again, try bricking it in a fixable way after backing up. If you come in with a force close loop, I but they won't have any idea whats going on and you'll have a high likelihood of getting a new phone. If it fails, just reflash and try another tack.

Haha perfect.
Sent from my SCH-I500 using XDA App

I would honestly try one of the Stupidfast kernels if you really want bettery battery life, but honestly it sounds like some kind of hardware problem.
Stupidfast kernels really do give me better battery life. I was skeptical at first but after wiping the battery stats and rebooting after I unplug I've been getting GREAT battery life.
I'm a HEAVY user and I unplugged at 11 AM and 9 hours later I still have 31% left. With ANY other kernel, my phone would be at <20% by now, probably under 10%
I'm a believer, and will be donating come Wednesday when I get paid

Tried them all. But the stupid fast does seem to do the best job.
Sent from my SCH-I500 using XDA App

I will say one thing, with the new DJ05 update my battery life is great. Best I've ever had. So when it is finally pushed to u enjoy. I feel like there has been some tweaks made in the upcoming update that make even a bone stock fascinate one of the best around.
Sent from my SCH-I500 using XDA App

ksizzle9 said:
I will say one thing, with the new DJ05 update my battery life is great. Best I've ever had. So when it is finally pushed to u enjoy. I feel like there has been some tweaks made in the upcoming update that make even a bone stock fascinate one of the best around.
Sent from my SCH-I500 using XDA App
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+1 on that.
DJ05 + StupidFast 1.2.3 = a battery juice sipper !!!!

Rediculous Battery Life!!!

This thing is a beast. I have 30% battery left and I have been using it for 41 hours without charging it. And I use it pretty heavy on sundays and on 3g all day saturday. I think it's got the best battery life of any device i've ever used. How are other peoples battery life?

Can you post your battery usage please? Just interested what you've been using in those 41 hours. Seems incredible!

burden010 said:
Can you post your battery usage please? Just interested what you've been using in those 41 hours. Seems incredible!
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no prob....does drocap2 work?

I get similar battery life.
Sent from my SCH-I500 using Tapatalk

I can't find a screenshot app that works and yes it's rooted.

From what I read you need the SDK to take screen shots.
Sent from my SCH-I500 using Tapatalk

Here you go....the best I could do

im going on 2d 3h 21m
4hours with display on
wifi on and off

DroidzFX said:
im going on 2d 3h 21m
4hours with display on
wifi on and off
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This is about the exact same results I get. I had about 30% left yesterday after two days and 4-5 hrs of usage.

I pushed about 36 hours before the device shut itself off. Medium to Heavy use (lots of browsing, some games, all around tinkering and playing in numerous apps), and a decent amount of that was standby.
Over-all, I'm very impressed with it and it has completely replaced my laptop (sold it before I got the Xoom, actually). I was actually having a hardtime leaving it off the charger because of how used to I am having to plug my devices in after a few hours of heavy use.

I did a real world test for my xoom this weekend. I used it as i "normally" would. when I wanted to do things, I just did - browse, played games, etc. I used it saturday night to show pictures of a new house to lots of people. Basically, how I would use it if I wasn't specifically testing battery life. Long story short, i went all weekend without charging. Charged fully at 4pm Friday. plugged in Sunday at 11pm with 20% or so still left.

with all due respect that's not accurate. A more accurate usage of batt life is 'display usage'
I get about 7 hours batt life. I was at least expecting 9 hours

aohus said:
with all due respect that's not accurate. A more accurate usage of batt life is 'display usage'
I get about 7 hours batt life. I was at least expecting 9 hours
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9 is a little too much i'd say. It really depends on what app you use and how much power the cpu takes out of the battery. For example, simple web browsing and apps aint gonna run on 2 cores. Gaming on the other will though. And real life usage is really what matters.

Legacy2385 said:
This thing is a beast. I have 30% battery left and I have been using it for 41 hours without charging it. And I use it pretty heavy on sundays and on 3g all day saturday. I think it's got the best battery life of any device i've ever used. How are other peoples battery life?
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35% left with wifi and 3g on all the time and 38 hours unplugged/turned on.
Sent from my Xoom using Tapatalk

That's about what mine lasts for, and I love it!! Its a nice break after my incredible only lasts for like 20 hours MAX with setcpu. XOOM for the win.
Sent from my Xoom using XDA Premium App

mrjoshzombie said:
I pushed about 36 hours before the device shut itself off. Medium to Heavy use (lots of browsing, some games, all around tinkering and playing in numerous apps), and a decent amount of that was standby.
Over-all, I'm very impressed with it and it has completely replaced my laptop (sold it before I got the Xoom, actually). I was actually having a hardtime leaving it off the charger because of how used to I am having to plug my devices in after a few hours of heavy use.
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I try to keep it off the charger as much as possible....i let it run down to about 30-25% give or take before I charge it. I want to keep this battery in as good a shape as I can.

Legacy2385 said:
I try to keep it off the charger as much as possible....i let it run down to about 30-25% give or take before I charge it. I want to keep this battery in as good a shape as I can.
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Samesies
My Xoom has awesome battery life... I am satisfied completely.

Terrible battery life on my Sprint Nexus :(

I just bought it yesterday and the battery like last around 4 he's. Now I bought this phone cause I heard it has great battery life like the Atrix. What do I do? I have juice defender running. Please help
Sent from my Nexus S 4G using XDA App

If you just bought it yesterday..... then give some time to calibrate thr battery! Just keep using it and let the battery reach normal. Most new batteries require 3-4 charges to start running fine. Give it a few days
Sent from my Nexus S using XDA Premium App

+ 1 the battery needs a few cycles to break in. Also, are you rooted are you running a custom room or kernel these things can have an affect on your battery also.

No I'm not rooted or have a custom kernel. I'm running stock.
Sent from my Nexus S 4G using XDA App

Strange, I get a day and a half of heavy use with the brightness maxed and running a live wall paper. I thought my Xperia Arc had great battery life but the Nexus S is insane!
OP are you using task killers? Don't. It takes up more battery for your Nexus S to re-start those apps than it does to manage them on its own.

It took my battery like a week to act right. Give it time
Sent from my Nexus S 4G using XDA App

gunstar3035 said:
Strange, I get a day and a half of heavy use with the brightness maxed and running a live wall paper. I thought my Xperia Arc had great battery life but the Nexus S is insane!
OP are you using task killers? Don't. It takes up more battery for your Nexus S to re-start those apps than it does to manage them on its own.
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a day and a half?? howd you pull that off? im usually charging about 10-14 hours thorough heavy use.

agree with everyone else, give it a few days.
I used some advice i found the said kill battery, charge full, kill battery, charge full, kill, charge, then use it. Charge it while it is off during that time.
First couple of charges, the battery would die after about 5-6 hours of constant "messing around" with the phone. Now it seems like it'll last a good time.
Im completely stock as well.

jark99 said:
a day and a half?? howd you pull that off? im usually charging about 10-14 hours thorough heavy use.
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I dont know. I don't really game on it so maybe thats it, but I am surfing the web constantly. When I go out I turn wifi off...thats about it. Oh and the only widget I am running is a clock and the weather for the clock is set to refresh every 3 hours "simi clock" is what its called.
Thats about it, I dont know what else to say. I came from an Xperia x10, Samsung Captivate, Xperia Arc, and now the Nexus S and its MILES better...so much so that I have decided that I will only ever own a "Nexus" line of Android.

gunstar3035 said:
I dont know. I don't really game on it so maybe thats it, but I am surfing the web constantly. When I go out I turn wifi off...thats about it. Oh and the only widget I am running is a clock and the weather for the clock is set to refresh every 3 hours "simi clock" is what its called.
Thats about it, I dont know what else to say. I came from an Xperia x10, Samsung Captivate, Xperia Arc, and now the Nexus S and its MILES better...so much so that I have decided that I will only ever own a "Nexus" line of Android.
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Haha agreed on the nexus part! My battery might get day n half tmrw! Welll see....i guess im constantly on it doing one thing or another
Sent from my Nexus S using XDA Premium App

No task killers here. Just juice defender.
gunstar3035 said:
Strange, I get a day and a half of heavy use with the brightness maxed and running a live wall paper. I thought my Xperia Arc had great battery life but the Nexus S is insane!
OP are you using task killers? Don't. It takes up more battery for your Nexus S to re-start those apps than it does to manage them on its own.
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Sent from my Nexus S 4G using XDA App

Like everyone else said you really need to give it some time to break in.
My first day with the Nexus the battery was dying as I left work (roughly 9 hours off the charger).
After owning the phone for about a month now it's changed dramatically.
It lasts well through the entire day, every day. Before I go to bed it's usually sitting around...
70-80% LIGHT use.
50% Moderate use
35-40% Heavy use. (Note: I don't play games, Heavy use to me is multiple short calls, many emails, many texts, IM)
I've never actually had the phone die on me.
I'm using CM7 (Latest Nightly) and the Netarchy CFS Kernel (default settings with the exception of VooDoo Color tweaks)
I don't use Juice Defender. Phone sits on 3G most of the day at the office, at home it sits on WiFi with the WiFi sleep policy set to never. (Wifi uses much less power then 3G, if you have WiFi, USE IT! and set sleep policy to never so WiFi stays on constantly instead of switching back to 3G when the phone is idle)
Do use a task manager but it didn't seem to make a huge difference.

Aside from letting your battery calibrate, you should try out juice defender. I know alot of people might scoff at a such an application but I've experienced over a two fold increase in battery life using said application. However I am running an undervolted netarchy 1.3.4 kernel with Oxygen, but said increase in battery life is with the same configuration.

Yeah it takes around a week to break in the battery. My battery life is pretty awesome. I usually charge it every other day now. It lasts a long time.
Sent from my Nexus S 4G using XDA App

Guys... battery break in isn't gonna change his usage from 4 hrs to 12 hrs. No battery break-in does that.
In all these cases I suggest looking at battery info in the OS itself to see if something kept the phone awake or whatever.
Sure heavy use in your first few days will always take a huge toll on battery. Calibration shouldn't totally throw off your battery life down to 4 hours either.

You guys who say heavy use, can you quantify that?
talk time per day?
texts per day?
roaming?
4g?
how many emails sent/received per day?
time on internet?

/shameless plug
try battery tweak in dev forums... i posted it in both of them

DroidBabe said:
I just bought it yesterday and the battery like last around 4 he's. Now I bought this phone cause I heard it has great battery life like the Atrix. What do I do? I have juice defender running. Please help
Sent from my Nexus S 4G using XDA App
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I'm in the same boat as you. Just got my Nexus S 4G on three days ago and the battery dies QUICKLY. The first day it died in 5 hours (with normal use and 4G off). By the time I unplug it and get to work, which is only a 20 minute drive, it's already down to 93%. I'm hoping everyone else is right in saying that the battery just has to be worked in a little.

I have 8 hours on battery right now with about 40% remaining in day 2 of my Nexus' usage. I made about 6 phone calls, sent out about 20 text messages, browsed the internet while waiting for a job interview and played Plants V Zombies when I was taking a dump.
I really only expect it to improve from here.

Out of curiousity, does anyone here have their "Use Wireless Networks" checked under the "Location and Security" settings (where it uses your 3G)? I have this enabled and I know this will drain my battery, but I wonder how much? The only app I have that updates my location while the screen is off is the stock News and Weather app (which only updates every 6 hours, a bug that automatically turns itself back on if you reset your phone). How much collection would Google do other than that?
Also, the other thing I have enabled is my Exchange set to push through the default Email app. However, this never really shows up on the battery usage app, so is push STILL killing the battery a lot through the stock app?
I'm just trying to see how people can get two days with 50% left after work (if just on 3G). On WIFI, MAYBE, but def not on 3G......