yashsingh1/xdaforums huggingface dataset:
[Nexus S Q&A, Help & Troubleshooting] justsignbythex:
I'm noticing increased battery life with my NS. After almost 1 week of owning it and actually using it, the battery has almost reached its peak performance state. When I first got it, the battery was charged about 90% out of the box. I played with it until it reached 10%, plugged it in the charger overnight for 8+ hours. I have been doing this for a few days in order to condition the battery.

However, I'm also noticing that battery life dramatically goes down during actual usage, even light usage.

For example, yesterday I took my phone off the charger after a 10+ hour overnight charge. I do my daily functions such as check mail, messages, forums (via Tapatalk apps, XDA, etc.), and some light internet browsing. After about 15 minutes of that, my battery has gone from 97% down to 89%. This kinda scared me as that isn't really considered heavy usage, especially after 15 minutes.

GPS is on (but not active and searching), WiFi is off, as is Bluetooth. Display is at ~35-40% brightness. Gotta add that this screen is AMAZING, even at that low setting. Sync is off for every app except for Google services. Facebook, news, and weather is set to update every hour or two.

On the other hand, standby time is pretty darn good. Before I went to sleep yesterday, I checked my battery life, which was at 65% at the end of the day. Cool.

Woke up this morning and did my daily tasks. Other than some light internet browsing here and there (~10 minutes each), a couple of phone conversations lasting 5 minutes, downloading more apps, playing with Google Goggles, my battery at its current state is 25% before I head to sleep right now. That is 1 day, 11hr, 2m, and 11s on battery. I would consider myself as a light to moderate user.

I'm going to continue to cycle this battery to its peak performance state and hopefully, the battery life will get even better.
[Nexus S Q&A, Help & Troubleshooting] Scala:
Sorry if this has been posted before..

Previously I had a Nexus One I used my phone ALL day without any issues and the battery would last about 20 hours with normal to heavy usage.

After buying the Nexus S a week or so i started to find a ton of battery and memory issues with this phone.

I had the phone for about two weeks without any issues, battery would last an entire day or even a day and a half, no overheating, charge to ~95-97% (which i read was supposed to happen

Battery Life: on a good day it lasts total of 12 hours, now its lasting about 8hours with MINIMAL usage by minimal i mean occasional text, browse the internet, wifi, bluetooth, sync, gps, all off screen dimmest. the phone being idle still consumes tons of battery.

Memory Usage: I'm experiencing heavy memory usage from the phone NOT apps, for example "Android Core(Home Screen) is taking about 28.3MB being the process that is taking up the most memory on my phone above all other apps and stock processes. Second is "Android System" taking 25.8MB after that is "Settings" 20.0MB "Dialer" taking 14.6MB.

I'm not sure why my phone is consuming so much memory above other processes/apps.

Other Nexus S users where complaining about overheating, the past 2 weeks my phone has been getting hot i wouldn't call it overheating just yet, while charging and with the screen on it gets to about 34°C(93°F) it doesn't get to much above 95°F while charging. Although for some reason while the phone is idle it gets hot, really hot (screen off) usually i notice this when i have it in my pocket and is burning my leg. If i'm watching YouTube or playing a game, i can only play a few minutes at a time before the phone gets unbearably hot. Too hot to handle.

Battery Consumption:

Display ~45%

Android OS ~11%

Android System ~10%

Go Launcher EX ~7%

Cell Standby ~4%

Gmail ~4%

Dialer ~2%

I understand if i was actually using my phone that the display would actually be consuming that much battery, but at work my phone is idle. I don't have my phone on me at work, so the screen doesn't go on unless a text or a call is received, making the screen go on for no more than 10 seconds on a missed call.

I love Nexus and love Google. If it wasn't for the lack of space and memory on my Nexus One I would still be using that. N1 was a very hardy phone.

Will rooting help this issue?

Thanks
[Nexus S Q&A, Help & Troubleshooting] rentaric:
The numbers you listed regarding memory usage and battery consumption are normal. Display will always be your #1, unless you charge the phone and go to bed right away.

Rooting might not solve your problem directly, but indirectly as you need to unlock to bootloader which wipes all data.
[Nexus S Q&A, Help & Troubleshooting] megamind:
My NS i9020 seems to loose 3-4% per hour at complete idle (just sitting on my desk, no calls, no wi-fi, no display use, etc). Could that be bad battery or it is more of a software problem?

I tried stock rom 2.3.4, MIUI 2.3.5, NsCollab 2.3.5 - same thing with all of them. Wi-fi sleep policy is set to "Never", network type is "WCDMA preffered", 2g networks only.

One thing I noticed is that when sleep policy is set to "when display turns off" the "Android System" takes over 40% of the battery use and the CPU is constantly at 12%.
[Nexus S Q&A, Help & Troubleshooting] rentaric:
Here's your problem, WCDMA prefered means it'll always try to connect to 3G unless its reception quality is really crappy and 2G is superior. If you say you can get 2G networks only you should switch to GSM auto or GSM only, this will greatly reduce battery use.
[Nexus S Q&A, Help & Troubleshooting] megamind:
Thanks mate, I tried "WCDMA preffered" with both 3g preffered and 2g (I do have excellent 3g coverage), then I tried "GSM/Auto" with both 3g and 2g, but the result is absolutely the same. The battery level now is 88% two hours after full charging and only 3-4 min of use with (WCDMA & 3g preffered). Battery use shows:

Consumed 374983 uAh since unplugged

Cell standby 49%

Phone idle 20%

Wi-Fi 12%

Display 6%

Android system 6%

Android OS 3%

etc.

And then it looks like they don't sell spare batteries here in Bulgaria :S
[Nexus S Q&A, Help & Troubleshooting] joey jeremiah:
So I tried using MIUI with the latest matrix kernel and let me say, while I love the MIUI interface that thing's a battery hog. I was averaging 16 hours per day of light to moderate usage (Maybe 2 hours of screen time, 1 hour heavy wifi stuff like watching online starcraft streams--****ing amazing on this screen btw) but on the new ROM and kernel I'm getting about 14 hours.

Now I've downloaded set CPU and set it to "Smartass v2" while setting the screen off to UV at 100 MHZ.

I've also downloaded juice defender, and TASKER. It was probably a mistake to download juice defender cause you can pretty much do everything you can on juice defender with tasker (And it's a lot funner to figure out how to do those things anyway).

Only problem I have is switching off 3g/2g automatically. NEITHER of these apps can do this, for some strange reason....On tasker it says "this feature is not available on this phone". What gives? This is what I want when the screen is off... I basically want the phone in airplane mode with 2G available. I would like to enable PUSH only when the screen is unlocked, and 3G only when I open web browsers or certain apps.

Seems like the top battery killers are:

CPU

Screen (Get a dark theme?)

WIFI

Push

And 3G.

That last one.... I think if I could figure out how to switch from 2g to 3g it would add on a few more hours to batt life.

The weird part is you can totally turn off 3g manually on MIUI... lol.
[Nexus S Q&A, Help & Troubleshooting] Petarsson:
but there is no statement from google, that there will be any update, which will improve battery life, is it?

i mean, it is definitely weird to lose hours of battery duration with a new OS and the developers (google's, of course!) don't give a f* about it?!
[Nexus S Q&A, Help & Troubleshooting] diaboliko.hacker:
I try this cycle but when I use my nexus-s i9023 just a little hard with wifi on, min freq 400mhz, max freq 100o mhz , the battery fron 50% arrive to 10% in 2 hours
[Nexus S Q&A, Help & Troubleshooting] Kubernetes:
Flash CWM recovery.

Turn off phone and plug in charger and charge until 100%.

Pull out plug, reinsert, and let charge until it hits 100% again.

Repeat one more time.

Boot into CWM recovery, go to Advanced>Delete Battery Stats.

Reboot as normal and charge until 100%.

Unplug and deplete the battery completely, until it shuts off.

Recharge to 100%, either on or off, but turn off for a final bump charge.

Deplete one more time and then after that use as normal.
[Nexus S Q&A, Help & Troubleshooting] hah2110:
Battery usage

Ok the new Battery Graph is semi-useful in 2.3 but I see a LOT of awake time. How do I find out what is keeping my phone awake? It doesn't appear to be registering too much in the Battery Use as far as awake time but the graph shows a lot of awake time when my screen wasn't on.
[Nexus S Q&A, Help & Troubleshooting] BlindWolf8:
My screen seems to be on alot too. Some help would be appreciated.
[Nexus S Q&A, Help & Troubleshooting] kanariya:
NFC & Battery life

Anyone discovered how much NFC affects the battery life of the phone?

Currently I have it turned off.
[Nexus S Q&A, Help & Troubleshooting] rashad1:
It barely uses any power, turning it off won't make any noticeable difference.
[Nexus S Q&A, Help & Troubleshooting] swetland:
NFC only consumes power when the screen is on, and its idle state is ~1-2mA (well within the noise).
[Nexus S Q&A, Help & Troubleshooting] hah2110:
Awake is NOT the same as Screen On.
[Nexus S Q&A, Help & Troubleshooting] BlindWolf8:
Do you have background sync on?
[Nexus S Q&A, Help & Troubleshooting] hah2110:
I have push e-mail, yes.
[Nexus S Q&A, Help & Troubleshooting] BlindWolf8:
I would turn all data sync services off and monitor it to see if things improve. If they do, you'll need to go and see what service is syncing too often. (Twitter, Facebook, GMail, Google Calendar, etc.)
[Nexus S Q&A, Help & Troubleshooting] ztm.000:
The Infamous Battery Life Thread

So... I'm curious to know about your experiences with the battery.

Sent from my Nexus S
[Nexus S Q&A, Help & Troubleshooting] DarkAgent:
About four hours of total screen time. That is not to say the phone only lasted me four hours in a day, but rather from full charge to almost death the screen was on (i.e. I used it) for about four hours. Nothing better than my Vibrant.
[Nexus S Q&A, Help & Troubleshooting] ap3604:
One of the best android battery experiences I have ever had.

Nexus S sips juice instead of gulping like most other devices.
[Nexus S Q&A, Help & Troubleshooting] ztm.000:
I get more than four hours. Seems like it takes four hours to charge though... normal?

Sent from my Nexus S
[Nexus S Q&A, Help & Troubleshooting] annndrewww:
Long charge times for sure, but relatively good battery life so far with very heavy use.
[Nexus S Q&A, Help & Troubleshooting] DarkAgent:
I don't understand how people get such great battery life :-(
[Nexus S Q&A, Help & Troubleshooting] rashad1:
I don't use auto brightness, and I like my screen to be relatively bright (60%). So my battery lift hasn't been that great so far, about 12 hours, but I'm guessing it will get better over time.
[Nexus S Q&A, Help & Troubleshooting] skiesofwinds:
dont understand

I don't understand either. I only get around like 6 or 7 hours from 100% to like 30%. I seriously need extra battery.
[Nexus S Q&A, Help & Troubleshooting] slowz3r:
Ive had good experience so far, not as good as my N1 as far as use but hell of a lot better than an EVO so thats a plus :)
[Nexus S Q&A, Help & Troubleshooting] unremarked:
I think you have a bad battery, mate. :(
[Nexus S Q&A, Help & Troubleshooting] meetagrawal:
What's the best way to check percentage?

I have a feeling my battery might be bad too.
[Nexus S Q&A, Help & Troubleshooting] demo23019:
People with battery issues might want to try reconditioning the battery with clockwork and see if that helps

Might be displaying inaccurate reading this is common on galaxy S phones

1. Charge phone completely, leave plugged into power

2. Boot into recovery

3. Wipe battery stats

4. Reboot

5. Remove power cable

6. Drain that sucker all the way

7. Recharge fully

8. Done
[Nexus S Q&A, Help & Troubleshooting] slowz3r:
quick question is the NS battery the same as in other GS phones?

Ive heard soooo many different things regarding condition li-ion batteries, some people say its bad, some people say it makes no difference, some people say it is needed, and some people say that draining a li-ion all the way to zero is bad and should only be done with ni-cad
[Nexus S Q&A, Help & Troubleshooting] Mactagonist:
I dont think it is, looks different at least.

So far, NS has a bit worse battery life then the N1. But that battery needs a few more days to hit its optimum charge really.
[Nexus S Q&A, Help & Troubleshooting] demo23019:
Yea i forgot it is not the same its actually smaller... but still would try

I honestly dont know if its bad. I did couple times with my vibrant and didn't do any harm
[Nexus S Q&A, Help & Troubleshooting] slowz3r:
I dont have a GS phone, i was just curious if it would be a waste to pick one up from T-Mo,

It is always good to have an extra batt around, i had one for my N1 i never used it but it was in case
[Nexus S Q&A, Help & Troubleshooting] demo23019:
My battery life is fine but i noticed leaving phone charging overnight...giving it plenty of time to charge. I unplugged from charger and immediately dropped down to like 94%

reconditioning and wiping bat statt seemed to correct this when it happened on my vibrant

Problem is your battery might be fine but android is detecting low battery and starts warning you ...ect

again i dont know if this will fix just mentioning from experience
[Nexus S Q&A, Help & Troubleshooting] slowz3r:
the unplugging the device and going to some 90ish percent is normal, all the GS phones did it...hell even the N1 would drop from 100 to 90ish in like 20 minutes.

THere is an article about why it does that.....i would equate it to a 500gig hard drive showing 475 :P
[Nexus S Q&A, Help & Troubleshooting] demo23019:
no I mean it would instantly drop...the second i unplugged it this is not normal

'It only happened twice and was after flashing new ROM

after resetting stats it was fine would charge to 100% and would gradually drop
[Nexus S Q&A, Help & Troubleshooting] slowz3r:
Hopefully Amon_RA gets a recovery working soon, i much prefer that over CW, but its all preference really :)
[Nexus S Q&A, Help & Troubleshooting] demo23019:
Ill have to check it out im only familiar with clockwork
[Nexus S Q&A, Help & Troubleshooting] unremarked:
Yeah that's supposed to happen, mate. Swetland, a Google employee who posts here, confirmed it. There's also a really great article on AndroidPolice explaining it.

You can increase the amount of charge the battery will pull before saying its done by "bump charging." You charge until it says 100%, then unplug and replug. The phone will charge a little more then read 100%. Repeat until satsifised. This is supposed to decrease the lifespan of your battery though.

On the topic of "calibration", I think it makes a difference. Might just be perception though.
[Nexus S Q&A, Help & Troubleshooting] insanemachine:
Here is the article mentioned. It is normal for that to happen.

http://www.androidpolice.com/2010/1...bump-charging-and-inconsistent-battery-drain/
[Nexus S Q&A, Help & Troubleshooting] slowz3r:
Ya ill wait to root until development starts taking off, i do miss me my Recovery and CM :(

but tbh i dont know how it can be improved upon
[Nexus S Q&A, Help & Troubleshooting] DKYang:
Fully charge your phone and leave it off the charger. Look at the percentage it's on and leave it alone over night. See how much you loose. I lost approximated 1% per hour over night and that's with the usual google sync stuff on. This is much better than when I had the Vibrant.
[Nexus S Q&A, Help & Troubleshooting] demo23019:
Learn something new everyday

thanks guys ill check out the link :)
[Nexus S Q&A, Help & Troubleshooting] cshih2:
Fully chraged till morning and as soon as I unplug it the battery drops to 96% in a second which never happened on my nexus one. And I also noticed Google map is eating the battery but I didn't even use the map but its draining my battery in the back.

Sent from my Nexus S
[Nexus S Q&A, Help & Troubleshooting] distortedloop:
Not the same, different form factor and size. Same number of mah, though (1500).

My first full day with it was 13 hours to get to 30% left. Lots of intermittent use, several background things running (weather widget, gmail, seesmic), took some pictures, made a couple of calls, etc.

My Galaxy S i9000 would have been to the same battery percentage in far less time with the same kind of use, but it's 6 months old and maybe the battery's just getting tired on it.
[Nexus S Q&A, Help & Troubleshooting] unremarked:
Copy and pasted from another thread on battery life.
[Nexus S Q&A, Help & Troubleshooting] slowz3r:
what a shame, does BBY carry them?
[Nexus S Q&A, Help & Troubleshooting] distortedloop:
What's a shame; that the batteries aren't interchangeable? Yeah, that sucks, especially since I have two spares for my i9000. Honestly, though, in 6 months with that phone, despite always having a spare battery in my wallet (they're very thin), I've only swapped them in the field once or twice.

I just learned to dock the thing whenever I can (car charger, desk charger at work, etc).

I don't think spare batteries are available yet. It took a couple of months before Samsung released them for the i9000 if I recall correctly.

Best Buy didn't try to up-sell me anything, no accessories, warranty, nothing. Odd, now that I think about it.
[Nexus S Q&A, Help & Troubleshooting] civicdrivr:
Mine lasts over a day of normal use (music, wifi when home, web browsing, gtalk, and youtube). Im got NFC turned off (not sure if it drains battery, but theres really no use for it ATM), brightness down to around 20%, and using dark themes. I have background data on as well and a few apps that use it (feedr, news and weather, gtalk).

For comparison, my Slide has a 1750mah battery and didnt even last a full day with light usage.
[Nexus S Q&A, Help & Troubleshooting] brian6685:
Well when I turn my screen off and turn it back on 5 min later, the battery will drop 2% in that timeframe. Probably because I just got it today and haven't charged it yet. I'm trying to drop it to the bottom first. Not running any background processes at all either other then sync.
[Nexus S Q&A, Help & Troubleshooting] annndrewww:
[Q] Diaplay -Battery Killer?

Whenever I check my battery usage info it shows display as taking up 48-50% of my battery. What gives, are you guys experiencing the same.
[Nexus S Q&A, Help & Troubleshooting] Joshfu13:
This is typical. The display is always the biggest battery hog.
[Nexus S Q&A, Help & Troubleshooting] slowz3r:
If display isn't ontop something is wrong
[Nexus S Q&A, Help & Troubleshooting] JohnnyFeet:
My display is set at the lowest and still uses roughly 40-50% of my battery. The display tears the battery apart.
[Nexus S Q&A, Help & Troubleshooting] DumbUglyDragon:
Its the same with all phones.
[Nexus S Q&A, Help & Troubleshooting] unremarked:
Folks, you realize that the Display is responsible for 90% of everything on the phone, right? lol.

That batter meter you're looking at? Consumes display power and is represented under Display. Like slowz3r said, if display isn't on top, something is wrong. Nearly everything utilizes the display. Think about it logically and you'll understand.
[Nexus S Q&A, Help & Troubleshooting] BlackOtaku:
I'll beat the dead horse and also point out that this is the same on all devices. :p
[Nexus S Q&A, Help & Troubleshooting] AndroidZ28:
I'm no expert, but I think this is normal...

Sent from my Nexus S
[Nexus S Q&A, Help & Troubleshooting] ryude:
Also, AMOLED screens do not use a backlight. So using an app such as screen filter WILL reduce your display power consumption. AMOLED power use is directly proportionate to the brightness of the colors on it's screen, that's why google changed the theme to mostly black.
[Nexus S Q&A, Help & Troubleshooting] slowz3r:
black = off :)

The darker the theme,background the better the batt life, although it may be so minute
[Nexus S Q&A, Help & Troubleshooting] ryude:
Essentially, yes. Black means it is using no power at all. However, when your phone is "awake" or "unlocked" more background applications and services are being run so it will use more battery than being locked.
[Nexus S Q&A, Help & Troubleshooting] ztm.000:
So here's a report of my battery as of today. It's 1a and I unplugged my phone at 10a the last morning. With normal usage I have

19% left so, pretty good right?

Sent from my Nexus S
[Nexus S Q&A, Help & Troubleshooting] :
definitely better;)

JD
[Nexus S Q&A, Help & Troubleshooting] ztm.000:
Good... hopefully as I charge and deplete more and more it'll build up.

Sent from my Nexus S
[Nexus S Q&A, Help & Troubleshooting] cshih2:
Map is draining the battery!?!?

I didn't turn on map for the whole days but the battery status shows 12%-20% of battery usage. Anyone experiences this at all? What might be the problems?

Sent from my Nexus S
[Nexus S Q&A, Help & Troubleshooting] RogerPodacter:
Display is always the highest, usually 65% for me. Use black colors every where possible. Black pixel is an off pixel. Cyanogen browser has an invert colors option that makes all white web pages black. Brilliant.
[Nexus S Q&A, Help & Troubleshooting] civicdrivr:
Just want to update this. Im using NoLED for notifications and this morning I got a text. My screen was on for about 2.5hrs because of it and my battery dropped 20%. I have since changed the NoLED timeout to 5 minutes. The battery stats menu in settings helps alot and you can really see what is draining the battery.
[Nexus S Q&A, Help & Troubleshooting] deadcookie:
[Q] Battery Life

hi :)

just heading over from the Htc Desire HD Section of this forum.

had my DHD for about a month now and my hopes for a better battery or software that improves the battery life is slowly but surely falling to zero :(

so i just had the idea of replacing my DHD with a new Nexus S and would like to ask how long the battery roughly lasts for constant / heavy / considerate / light usage ?
[Nexus S Q&A, Help & Troubleshooting] ap3604:
You could always just buy a spare battery and stick it in you wallet to have your desire hd last all day. MUCH cheaper ;)

Nexus S tho lasts me about 6-7 hours of constant internet usage. A hell of a long time.
[Nexus S Q&A, Help & Troubleshooting] deadcookie:
thanks for the quick reply :)

haha well if i sell my DHD i just have to add a few more bucks and i would have the Nexus S :D i'm not thinking about keeping my DHD if i should decide to go with the Nexus S ^^ well ... 7 hours sounds like a dream for my DHD though :D
[Nexus S Q&A, Help & Troubleshooting] Xandlinger:
I use the phone constantly throughout the day, WiFI is always on when I am close to a hotspot or at home, otherwise 3G is always on. Same with GPS. My Brightness is set to about 70% (jesus this thing is bright at low levels, coming from an HTC Desire). It has lasted me from 6:45am to 11pm on a single charge, and I have never gotten the low battery message.
[Nexus S Q&A, Help & Troubleshooting] deadcookie:
thanks Xandlinger :)

sounds pretty awesome for me (given the fact that i recharge 2-3 times a day, even when i disable wifi/3g when i don't need it)
[Nexus S Q&A, Help & Troubleshooting] slowz3r:
On moderate-ish usage, leaving it on overnight without charging ya
[Nexus S Q&A, Help & Troubleshooting] deadcookie:
as people say: Pictures speak louder than words !

just checked mine and i got 61% after unplugging for 4h 37 mins :(

thanks a lot slowz3r :)
[Nexus S Q&A, Help & Troubleshooting] xspyda:
These are impressive stats ... also had a DHD and now considering the Nexus S. Seems like battery life may finally be in the acceptable range for an Android device!
[Nexus S Q&A, Help & Troubleshooting] BruceCLin:
Moving from Vibrant, I noticed the battery last much longer on nexus s. It's basically the same hardware, so it's probably software.