yashsingh1/xdaforums huggingface dataset:
[Nexus S Q&A, Help & Troubleshooting] superbestfriends:
Just a heads up - I was getting pretty bad battery life initially. I'm not sure whether Gingerbread/NS has a calibration period, but it improved drastically after a few days of use. Last charge I managed 1 day and 15 hours - it was at around 28% when I went to bed so I decided it was best to charge it then.

The previous charge was only around 13 hours.

Can't say I was doing much differently - being near better reception certainly helps.

I've now set my wifi's sleep policy to "never" - thanks for the tip that it still auto-swaps to 3G when out of range (this is all I cared about). When I'm near my known wifi stations I'd prefer it to stay awake than swap to 3G.

Seems to be constantly improving - though that could have something to do with my use (though I wouldn't know what specifically).

Oh and if your dialer is in the list of apps chewing up battery, that makes me think it's less of an issue with your hardware, and more of an issue/glitch with gingerbread. Try force-stopping the dialier or rebooting - it shouldn't be in the list.

My list is:

Wifi

Display

Cellstandby

Phone idle

Android OS

I think it's possible some people are jumping the gun to put the blame on hardware when it could possibly be a specific issue with the software.
[Nexus S Q&A, Help & Troubleshooting] dfitzpatrick:
So far this phone has wicked battery life for me. J also have an epic and it easily destroys that in battery life
[Nexus S Q&A, Help & Troubleshooting] rashad1:
Got a replacement on Wednesday, and on it's first full charge after letting it die from the charge it had out the box. I got 13 hours of moderate to heavy use. Mainly surfing on 3G and listening to music, but also with about 20 minutes of 3D gaming.

On my first N1 I would struggle to get 9 hours of use out of my battery.
[Nexus S Q&A, Help & Troubleshooting] Mr.Clark:
I don't know if it's a calibration period or if it was me installing the Juice Defender 3 beta, but my battery life in a marginal 3G area with WiFi, music, texting, web browsing and a bit of Navigation experimentation gave me over 42 hours battery yesterday (ended up on 3%...)
[Nexus S Q&A, Help & Troubleshooting] jthornton71707:
What is your brightness set too? And what is your screen on time?
[Nexus S Q&A, Help & Troubleshooting] TheBiles:
Oh, man. I've had amazing battery life the lsat few days. Just turned the brightness to a constant 20% and set WeatherBug to only use mobile network for location instead of GPS. I've routinely finished a 12-hour day with 40% remaining.
[Nexus S Q&A, Help & Troubleshooting] ztm.000:
Check these stats out...
[Nexus S Q&A, Help & Troubleshooting] zomgzombies:
After doing this, my dialer has not peaked all day. yay!
[Nexus S Q&A, Help & Troubleshooting] xspyda:
Just taken the NS off charge (only took 96 percent) and after sitting reading and contributing to this forum for around 30 mins over wifi with the screen brightness at min I'm down by about 5 percent.

Is this discharge rate about in line with what others are seeing when the phone is in use?
[Nexus S Q&A, Help & Troubleshooting] sinatosk:
Better than me this morning. 15 minutes and enter from 97 to 90 doing the same as you said
[Nexus S Q&A, Help & Troubleshooting] robstunner:
Sounds fairly normal to me.
[Nexus S Q&A, Help & Troubleshooting] xspyda:
Brightness at min?
[Nexus S Q&A, Help & Troubleshooting] sinatosk:
Like I said... the same
[Nexus S Q&A, Help & Troubleshooting] xspyda:
Thanks, I think this phones battery is stellar in standby but usage soon brings it down, though that's to be expected.
[Nexus S Q&A, Help & Troubleshooting] xspyda:
Maybe the type of router and signal strength might have a bearing...
[Nexus S Q&A, Help & Troubleshooting] distortedloop:
The 96% only is addressed in the FAQ. I'm not sure the phone's % reporting is accurate even in the 90+ range.

5% of drain in 30 minutes doesn't seem too out of line to me, think about it, that's still 10 hours of use if you never turn the phone off...that's amazing and far above the rating on the phone.

If you feel it's excessive, perhaps dig into the Settings/Battery usage to see if any particular thing is eating up battery.

From the FAQ post that is stickied at the top of the forum:
[Nexus S Q&A, Help & Troubleshooting] sinatosk:
Can't be my router. Its even worst when on 3g
[Nexus S Q&A, Help & Troubleshooting] xspyda:
Yep I'm aware of the 96 percent thing been a known issue, if it even is an issue. Its just a tad disconcerting and was just something I threw into the post to explain the circumstances accurately.

I don't think 5 percent in 30 mins is excessive at all, just wondered if it was in line with the usage others are seeing.

Very pleased with battery life actually, even moreso when I ignore the stats as I think we can become a little obsessed with that percent counter!
[Nexus S Q&A, Help & Troubleshooting] xspyda:
Another thought, you set to dark or light theme?
[Nexus S Q&A, Help & Troubleshooting] B3arfruit:
All I have to say is 1 day 2 hours and 30 min and I am at 18%. Seems good to me and I have been using it a lot. From music to Facebook and data usage. Task killer is my friend. Leave my wifi on and 3g.

Believers b3ar fruit with their Nexus S.....:)
[Nexus S Q&A, Help & Troubleshooting] sinatosk:
Mostly dark
[Nexus S Q&A, Help & Troubleshooting] sinatosk:
whats your "Display" time on ?
[Nexus S Q&A, Help & Troubleshooting] xspyda:
Interested to know this too. Just noticed mine has discharged about 6 percent in 6 hours. That's totally unused but wifi turned on and sync active.
[Nexus S Q&A, Help & Troubleshooting] Androyed:
It seems that the display actually drains the most battery. That's logical, of course. But there is one thing I got to say about the Super AMOLED display:

Super AMOLED only saves battery (against LCD) when the colour black and other dark colours are used. When white and lighter colours are used, which are very common on the internet, AMOLED actually drains more out of your battery than LCD. This is because AMOLED doesn't have a backlight: the pixels light themselves up. Hence that black and other dark colours use less energy than white and lighter colours, because white needs more light than black. This is not the case at a LCD. LCD always needs backlight. The energy it uses is constant, whether you use black, white, purple or green.

So it all comes down to this: what do you do on your devices when your display is on? Gingerbread is actually using the colour black more, because black uses less (or practicly zero) energy than lighter colours. But the internet consists of the colour white, mostly. I don't know if this got to do anything whit the poor battery life, but that's just my thought of it.
[Nexus S Q&A, Help & Troubleshooting] sinatosk:
By that logic. XDA needs to darken their forums as I browse the html the most. There is mostly white on my screen
[Nexus S Q&A, Help & Troubleshooting] Androyed:
I don't think that's going to happen. Black text on a white background is the best readable. You could try white text on a black background, but that's not very printer friendly and it hurts your eyes.:)
[Nexus S Q&A, Help & Troubleshooting] RogerPodacter:
That's exactly why cyanogen ROM web browser has the invert colors option. That's the only way I use it as it turns most white web pages black.

White images on my amoled pull about -550mA, and the same black images pull around -190mA. The difference is huge.
[Nexus S Q&A, Help & Troubleshooting] distortedloop:
Wow, that's interesting statistic. How do you measure that?
[Nexus S Q&A, Help & Troubleshooting] Mr.Clark:
The app has a white-on-black option, as I discovered yesterday. :)
[Nexus S Q&A, Help & Troubleshooting] distortedloop:
Gotta tell 'em how to do it:

In xda app, Menu/Settings/Display Style set to Dark.

And while you're in Settings, maybe you could turn off the default signature that's on by default... lots of complaints about it in the xda general forum.
[Nexus S Q&A, Help & Troubleshooting] Memnoch30:
Yup, it's the only easy to use the xda app. Just like the reddit app :)
[Nexus S Q&A, Help & Troubleshooting] slowz3r:
psh get the hell out with you and your N1 :) :P
[Nexus S Q&A, Help & Troubleshooting] Mr.Clark:
Really? Complaints about a single line of text?

Some people have too much time on their hands... ;)

Like it or not, sent from my Nexus S using XDA App
[Nexus S Q&A, Help & Troubleshooting] Luxferro:
my phone lasted 2 and a half days without a charge, connected to wifi >90% of hte time. with light use during that time.
[Nexus S Q&A, Help & Troubleshooting] justsignbythex:
^^^That's impressive.
[Nexus S Q&A, Help & Troubleshooting] zomgzombies:
need proof next time.
[Nexus S Q&A, Help & Troubleshooting] onthecouchagain:
If SAMOLED really conserves battery best with dark colors, and Gingerbread's use of darker tones was to serve this purpose, it seems silly to me that Google didn't make this universal throughout the OS. Why not have SMS and Gmail darker colors; they are as white and bright as ever. If you're making us read white font against black background in every other area (contacts, system menus, notification bar, etc.) why not complete the theme in other areas? Or at least provide the option to swap colors.

Oddities like this and others (like lack of unified copy/paste method, or whenever something comes up where you need to type something in, why doesn't the keyboard automatically come up? Why do I have to tap on the space on the screen to bring up the keyboard? An example of this is setting the alarm times) baffle me with the Android experience.
[Nexus S Q&A, Help & Troubleshooting] thepoetvd776:
that's one complaint I have, I really wish google would let you pick a dark theme for messaging and gmail, instead of having to look for other options our modified apks.
[Nexus S Q&A, Help & Troubleshooting] robstunner:
I dont see the need to change the SMS and Gmail to black just to save battery life, its nominal. On top of that, White is good for LCD, black for SAMOLED. Android comes on dozens of more devices that are NOT SAMOLED.
[Nexus S Q&A, Help & Troubleshooting] distortedloop:
LOL, well, ya, maybe too much time on our hands, but nice to have the resources to have that extra time. YMMV.

The complaint is that it's generally a useless bit of information that is in no way distinguishable from the rest of the body of the message until you've read it, and frankly, I don't give a *&##@ what device or what app you're posting from, and after reading it as part of your otherwise useful content a hundred times, it's a bit annoying.

End of the world stuff, nah, but pointless signatures are a blight on forums in general, and this one's easily addressed.

Sent from my MacBook Pro using the web interface on the Chrome Browser powered by Google.

.

;)
[Nexus S Q&A, Help & Troubleshooting] knytphal:
I assume you're referring to "Auto WiFi Toggle"? I can see it in AppBrain, but it's not in my market.....do you happen to have an apk that I can get at?

...although I guess one could just always leave wifi on without needing to toggle it seeing as how it'll swap back and forth on 3g if needed. Fortunately most everywhere I go has a wifi spot.

I'd also be interested in seeing the screen/display on time of some of these people that have 24+ hours of battery life - that's just this side of impressive. I can routinely get, oh, 15 and a half hours of battery with probably three to four hours of screen on time.
[Nexus S Q&A, Help & Troubleshooting] unremarked:
The first time I was attempting to "condition" the battery(and yes some say it helps, some say it doesn't, I think it does) I saw about 6 1/2 hours of screen on time with full brightness from a 100% charge to 0.
[Nexus S Q&A, Help & Troubleshooting] RogerPodacter:
totally agree. that's why i switched to handcent for texts, since it let's you use the all black theme. and of course cyanogen you can install black versions of many different apps such as stock messaging app, and i think even gmail app? not sure on that one. i'd love it though!
[Nexus S Q&A, Help & Troubleshooting] dinan:
There's a black version of the MMS.apk and Gmail.apk in the apps section. Just rename your existing ones to MMs.apk.bak and Gmail.apk.bak and then push the new ones, correct the permissions, reboot and you're good to go.
[Nexus S Q&A, Help & Troubleshooting] onthecouchagain:
Does this require rooting?
[Nexus S Q&A, Help & Troubleshooting] distortedloop:
Yeah, pretty sure you'd need to be root since you're making changes to the /system partition which is mounted as read only until you remount as r/w which requires root.
[Nexus S Q&A, Help & Troubleshooting] robstunner:
maybe you should start the trend by not having a signature, yours is a single line of text as well.
[Nexus S Q&A, Help & Troubleshooting] distortedloop:
WARNING, pretty much off topic, but in response to comments made here.

The "Sent from my MacBook Pro using the web interface on the Chrome Browser powered by Google." part isn't normally there in my posts, it was manually added for sarcasm/irony purposes to show my point.

If you're talking about my one-line signature in the signature portion of the forum, that's not the same thing. Those are clearly NOT part of the body of the message, and you're not likely to read it unless you're interested to see what it is. You know that it's a signature, not a continuation of the thoughts being made in the post you're reading. Signatures on this forum can be really obnoxious, with an inch or two or more of screen space going to pictures of old phones, tacky oversized text and links. They're easily turned off (I never see them, I have them turned off in my profile settings).

The XDA app signature is a different beast. It puts in a one liner as part of the body of the message text. There's no visual cue to your brain that it's a signature and that you don't need to read it. It looks like the poster has more to say, but they don't. It wouldn't be so bad if there was a line drawn or something else to tell your brain to stop reading further, the valuable content in the post is finished.

As I've said, not a huge earth shattering deal, just a minor annoyance, but I'm not alone. Head over to the xda general forum and there's an old thread from last April/May calling the xda app signature spam (the app author actually shortened the default based on that thread), and it's mentioned as a problem also in the thread for the app itself. Unfortunately there's no way to turn it off from the viewer's point of view; only the author of the post can turn it off.

Sent from my MacBook Pro via the Chrome Browser powered by Google.
[Nexus S Q&A, Help & Troubleshooting] RogerPodacter:
you totally just made my day. thanks, off to go look for the gmail apk now.

note: yes you need to be rooted. and you can likely do everything with root explorer if you dont want to mount on USB with ADB. just mount as R/W, make sure to set permissions, etc.
[Nexus S Q&A, Help & Troubleshooting] unremarked:
Head's up on the black gmail: It was exceptionally buggy for me. It wouldn't mark new emails as being red, and had a really hard time sending outgoing ones. It wasn't just that they were being sent... it just wasn't being sent to the Gmail servers. I'd log in on the PC and the emails/drafts wouldn't be there either.

Ultimately, I deleted it and installed the original gmail from the market.
[Nexus S Q&A, Help & Troubleshooting] Luxferro:
Here ya go, I took some drocap screenshots, but was lazy and didn't upload them untill now.
[Nexus S Q&A, Help & Troubleshooting] ztm.000:
Woooooow holy crap. That's awesome.
[Nexus S Q&A, Help & Troubleshooting] onthecouchagain:
For whatever reason, I'm finding my phone doesn't read the "off the charger" times accurately. For example, if it's been off the charger for 10 hours, and I plug it in to charge for a little bit, then unplug, it'll read that it's been off the charger for 10+ hours, which is untrue.
[Nexus S Q&A, Help & Troubleshooting] mmas0n:
It is reporting accurately, it's just not reporting the same statistic as previous versions of Android. It's reporting the time on battery since the phone was last fully charged. Personally, I find this much more useful than the time on battery since the last time the phone rebooted or touched a charger for 8 seconds.
[Nexus S Q&A, Help & Troubleshooting] distortedloop:
Same behavior here.

The on charger for 8 seconds resetting the clock is a good reason to do it the new way, but resetting of the clock only after a full charge isn't very accurate picture of what's going on either.

If I am off charger for 10 hours, then put a +25% charge on the phone by plugging in for an hour, and the 10 hours doesn't get reset/modified in any way, we're going to see incredibly long (and inaccurate reports) of how much battery life people are getting.

Not sure what the best approach is; some kind of deduction to the off-battery clock number based on how long back on a charger.

I did notice the new battery graph screen includes a bar graph to show any on-charger time, so at least we're not totally blind as to the true situation here.
[Nexus S Q&A, Help & Troubleshooting] Luxferro:
yeah, if you were to charge it w/o fully charging, it can be seen on the battery graph, and on-charger bar.

If you look at my screencaps on the previous page, you'll see a blip on the on-charger bar, and a corresponding tiny increase in charge on the graph. This must have been me plugging my phone into my laptop for something (getting a picture, ect).

If you turn off the phone, or charge the phone with it off, you'd most likely see a flat line, corresponding with the time off, and a spike in charge if it was charged during that time.
[Nexus S Q&A, Help & Troubleshooting] distortedloop:
It's interesting is that the obvious blip up (beneath the 1 in 2d 14h) has a corresponding green mark in the Charging bar graph, however at the point that's beneath "r" in the word "battery" there is a slight upward movement in the graph, but no corresponding Charging indication.

Just some fluke in juice left reporting on the battery, I suppose.
[Nexus S Q&A, Help & Troubleshooting] RogerPodacter:
thanks i'll watch out for that stuff.

anyway i've been digging thru the nexus s battery drivers just for the hell of it. anyone wants to take a look, here is the source:

http://android.git.kernel.org/?p=ke...10e88aaeaf651520e5f3870000c435c9033c7;hb=HEAD

just check the s5pc110_battery.c and s5pc110_battery.h files.
[Nexus S Q&A, Help & Troubleshooting] Luxferro:
Yeah, I noticed that as well. The other odd thing is why is torque listed as my most draining app. I think I used it for like 5-10 minutes during that time period. And I looked in running apps/services, and it wasn't running. Maybe another glitch?

I've since removed it for testing purposes, and am at almost 2 days on this charge, with 56% charge left. But I am now at work (after being off the last 4 days) and I lose cell reception here most of the time. So it will probably drain faster now then sitting in my apartment.
[Nexus S Q&A, Help & Troubleshooting] distortedloop:
Torque may just be one of those apps that doesn't really close properly unless you specifically exit it from the menu. There aren't a lot of them, but some apps are rude like that. Could also just fail to close a sensor properly, on the SGS i9000, sometimes the Gallery3d app is like that, the sensors go nuts and drain the battery even when Gallery isn't open.
[Nexus S Q&A, Help & Troubleshooting] qwerp_:
i just realize something new. which i believe contribute to using of more juice.

from googleblog

"Notification bar icons (Wi-Fi, network coverage bars, etc.): Turn green when you have an uninhibited connection to Google, white when you don't. Hint: if you're in a hotel or airport using Wi-Fi, the bars won't turn green until you launch the browser and get past the captive portal."

i have both N1 and NS.

my N1 is running on o2 (uk) and my NS on tesco (piggyback on o2)

i realize that on my NS, the link to google services keeps breaking/loosing (meaning it turn white from time to time).

and to prove the point, when i receive a new gmail, my N1 notify me almost instantly all the time, and on my NS, it just sits there.

which i come to a conclusion that i believe there is some different setting for the data connection for tesco where it times out and kill the session to google rather than keeping it alive.

to further prove my point, i will be swapping the SIMs to see if that is any different.

i believe everytime the link breaks, the NS will pool and retry to connect and this i believe requires more juice.
[Nexus S Q&A, Help & Troubleshooting] jthornton71707:
Why did my battery drop so rapidly??

I've never experienced this. It went from 80% down to about 55 in about a 5 minute span only In my pocket. Everything on battery stats is normal also. Notice the vertical line??? I didn't do anything out of the ordinary.
[Nexus S Q&A, Help & Troubleshooting] AndroidZ28:
I do not notice the vertical line...

In fact I see no picture at all...
[Nexus S Q&A, Help & Troubleshooting] artakus:
In 5mins? Whats running on the background?

Maybe u got apps running on network n gps...

Well my nexus got a solid 4hr+ on 3.5g and gps with screen lid all the 4hr+ with auto brightness.

Try to fully discharge the battery and do a full charge. That might work. I think worked last time with my omnia2
[Nexus S Q&A, Help & Troubleshooting] KUKitch:
I have seen several posts in this thread mentioning seeing heavy battery use by google voice or maps with no actual usage and no responses to these mentions. I too have been noticing this recently and my battery life has gone from stellar to awful and I'm not exactly sure what the cause is. Anybody have any idea on why those might be showing up like that?

I will be taking some of the advice regarding wifi and noled timeouts as my phone was awake and seeing use this entire last night and I'm assuming it's because I had an email notification. I'm just interested in getting back to a full day's usage easily rather than charging midday at work when I really haven't been using it much. Anyway, any thoughts are appreciated.
[Nexus S Q&A, Help & Troubleshooting] onthecouchagain:
I'm noticing my battery isn't charging to full anymore, and I don't mean it charged to full and I unplug and it goes to 97%. I mean, after leaving it on the charger over night, when I wake up, my battery widget reads 99%. It's only been happening recently; prior to this, an overnight charge always read "F" for full (then if I unplugged, it went to 97% - which isn't the problem I'm referring to).

Is this... bad?
[Nexus S Q&A, Help & Troubleshooting] MikhailCompo:
[Q] Battery only ever 98%

Since my NS arrived, I fully charged then fully discharged battery straight away.

Buy after charging overnight, when I pull out the power cable, the charge shows 97% or 98%. I have had the phone for about a week Now with same result every time.

Does that indicate a bad battery? Or bad software?

Should I send it back?
[Nexus S Q&A, Help & Troubleshooting] shrivelfig:
Smart software. If you overcharge the battery, it dies.

http://xdaforums.com/showthread.php?p=10100770#post10100770

http://androidforums.com/nexus-s/240413-94-battery-after-full-night-charging.html
[Nexus S Q&A, Help & Troubleshooting] slowz3r:
if you want a true "full" battery, trickle charge it using USB :)

and again, this is why the phones charge the way they do

http://xdaforums.com/showthread.php?t=904577
[Nexus S Q&A, Help & Troubleshooting] shrivelfig:
Holy OUCH, Batman! :eek:

A very good reason to leave the experimenting to those that know what they're doing.