12 hours on battery? - Nexus S Q&A, Help & Troubleshooting

Hey all,
I'm averaging about twelve to thirteen hours on battery. Is that normal?
I only let Gmail sync and I go stretches without even using the phone. Never watch videos or anything intense.
Sent from my Nexus S using XDA App

I can make 18-24 hours with the usage above,i.e, minimal.
Sent from my Nexus S using XDA App

Battery life was ~12 hr. for me on stock ROM with no special attention paid to what's syncing. Since then I've gone to a custom ROM and kernel that allow under-volting the phone to extend battery life. I haven't measured yet but I'd guess I'm in the 16-20 hr. range now.

I'm running 2.3.4 on a custom ROM. I wonder what I'm doing wrong?
Sent from my Nexus S using XDA App

Hog Milanese said:
I'm running 2.3.4 on a custom ROM. I wonder what I'm doing wrong?
Sent from my Nexus S using XDA App
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Click to collapse
well if you're on a custom rom, then things vary. me myself i get awful drainnage on some and excellent on others. one thing you could do is that you could try using netharcy's kernels or the UV trinity one. be sure to re-calibrate your battery and wipe battery in recovery.
(you dont have to recalibrate battery everytime u flash a rom but i just recommended it so that you can monitor your battery usage more effectively).

I'm easily achieving 24-30 hours with my Nexus S with 9 hours on display, 4 hours of music-listening, 2 hour of voice calls, 4 hour wi-fi browsing.
Running 2.3.4, Netarchy 1.3.1 CFS, zipaligned deodexed custom ROM. 3G is off though, because in my country (and my carrier) 3G doesn't work on the 900mhz band the Nexus S uses.

What is this Netarchy you speak of? My ROM is deodexed and zipaligned.
Sent from my Nexus S using XDA App

Netarchy is a kernel for the phone.
See here: http://forum.xda-developers.com/showthread.php?t=936219

Netarchy http://forum.xda-developers.com/showthread.php?t=936219 is a replacement for the stock kernel, and it allows under-volting. The idea is to run the phone CPU at a lower voltage, thereby extending battery life. Under-volting has to be included in the kernel when it's compiled, i.e. you can't do it with just any kernel. Trinity UV is another kernel that does UV.
The easiest way to configure the degree of under-volting using Netarchy is Jonathon Grigg's new Proton app http://forum.xda-developers.com/showthread.php?t=1091382

Okay, I flashed the (stable) Netarchy kernel for my phone and it seems twice as "snappy" but haven't been able to test the battery life yet. I cleared the battery stats in Recovery and am charging it right now. We'll see!...

Hog Milanese said:
Okay, I flashed the (stable) Netarchy kernel for my phone and it seems twice as "snappy" but haven't been able to test the battery life yet. I cleared the battery stats in Recovery and am charging it right now. We'll see!...
Click to expand...
Click to collapse
Remember, after the first clearance of the battery stats, the data needs to be re-populated, so you won't have good battery life until after a few charge cycles. Let your battery drain dead, charge it to 100% without interrupting it, then repeat this process somewhere the next few days.
Report back after at least 4 full charge cycles (from 0-100%, not necessarily until your battery is depleted, you can charge at say 70% to 100% and that counts as 30% Each 100% is a complete charge cycle)

hey guys, my phone is in stock, rooted, and I also getting 12-13 hours under medium/heavy use, I want to try this kernel, so what I have to do is download the zip (already did) file and apply it on the recovery menu right?

and what happens when I want to the original kernel?
ps: sorry 4 the noobness... lolz

Using Netarchy and undervolting 25mw my phone can standby 24ish hours on one charge. I can go 12 hours of heavy usage (4 hours screen time etc).

thedauntlessone said:
Using Netarchy and undervolting 25mw my phone can standby 24ish hours on one charge. I can go 12 hours of heavy usage (4 hours screen time etc).
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Click to collapse
well that's pretty much what I did yesterday without the netarchy mod. I disconnected my cellphone at 12md, I listened like 4 hours of music, and also checked my email, twitter and facebook, many times, (I was in class so I was super-bored) all in wifi. and with my 3g activated. I think I'm going to disable the 3g when I'm on wifi. I think is kinda logical.

Buried said:
I'm easily achieving 24-30 hours with my Nexus S with 9 hours on display, 4 hours of music-listening, 2 hour of voice calls, 4 hour wi-fi browsing.
Running 2.3.4, Netarchy 1.3.1 CFS, zipaligned deodexed custom ROM. 3G is off though, because in my country (and my carrier) 3G doesn't work on the 900mhz band the Nexus S uses.
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That's INSANE! :O
Mine never achieved half as good as that! my 18 hours include only 2 or 2 1/2 hours of display-on time and usually around half an hour of music!
Are you doing an overboard UV to achieve that?

Once again this is confusing because we have both S and 4g phones here, and they use different technologies and have differing battery lives.
I do hope they have separate forums for these soon...
Anyway, my Sprint 4G got 10 hours tops, usually more like 8 with average usage. (calls, gmail sync, internet, etc. throughout the day.)

Going on 18 hours today on my S4G with moderate use. Calls, texts, browsing, music. My battery is reporting 18% left right now. Was also without service for nearly an hour (inside a building) and we all know what that does to your battery.
Sent from my Nexus S 4G using XDA Premium App

I have the european version of the SNS with LCD.
On stock 2.3.4 (not rooted or anything) with wlan on and gmailsync i theoretically have standbytime 12days +
My (rooted) SGS before with AMOLED had 30hours standby with the same settings...

9 hour display time? I doubt its true maybe yours stats are bugged happens to me
Sent from my Nexus S using XDA App

Related

is this considered decent battery life?

ok using wiskey rom with bali kernel stock file system for now havent done the battery reset sence flashing this rom as of yet. Took phone off charger at 600 am pst its now 1003 pm pst and still have 19 percent battery thats after leaving facebook running in the background yahoo messenger texting most of the day 4 hours worth of phone calles browsing the net listening to music for 40 mins just wasnt sure if thats conisdered light or moderate usage and if thats considered decent battery life?
I'd say that is pretty moderate use, although i'd advise you not to leave background apps running since it drains battery. Talking on the phone will take you down quite a notch on the battery life, same goes for your data usage. I usually get about a single day out of my charged battery with normal use though so you're fine. (I'm running stock w/root- so considering you're running a custom rom i think that's magnificent)
EDIT: I just rer-read and saw you're using the bali kernel lol
RaverX3X said:
ok using wiskey rom with bali kernel stock file system for now havent done the battery reset sence flashing this rom as of yet. Took phone off charger at 600 am pst its now 1003 pm pst and still have 19 percent battery thats after leaving facebook running in the background yahoo messenger texting most of the day 4 hours worth of phone calles browsing the net listening to music for 40 mins just wasnt sure if thats conisdered light or moderate usage and if thats considered decent battery life?
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Yeah, thats waaayyy better than what I've been getting. I swear there's something wrong with my phone. Unplugged at 9am, had to recharge by 8pm. Didn't really do much either, just messed with it for like an hour trying to fix the trigger theme for frost.
Sent from my SGH-T959V using XDA App
the whole point is trying to kill the battery lol thats how i use my phone and keep in touch with people when im not home so i do leave those apps running on puropose so i can keep in touch phone is idleing right now at 18 percent still lol mm might play a game to try n kill it further well thanks for letting me know that its considered decent i guess after it dies ill calibrate the battery and see what i get after
so ive been trying to figure out how to get the best battery life. i saw that someone got 50+ hours on their phone in the battery life bali kernel thread! they were using juice defender. i tried it on my sisters phone and it definitely makes a difference. the only problem that i am having with juice defender is the issue with cpu speed. i am oc'ing at 1.2ghz, but juice defender is always changes it back to 1ghz...at which point tegrak tries to get it back to 1.2. lol. anyone know how to get past this in the free version? i dont want it impacting tegrak.
I was the one who got 50+ hours.. Just to clarify, I'm not using the bali kernal. I'm on Whitehawkx stock Deodexed KD1 ROM with root, with a lot of bloat removed. My phone is also only about 3-4 weeks old (got it as a refurb from Tmobile), so maybe the fresh battery makes a difference.
As far as JD, I'm not sure how to get around the overclock issue (I'm not OC'd), but I will buy the ultimate version and poke around a bit to see if there are settings for that.
My next charge didn't last as long because I used the phone much more over the holiday weekend, but I still got a bit more than 24 hrs.
This latest charge is going strong though, I'm at 49 hours right now and still have 64% battery left. Haven't used wifi or gps on this charge at all, but did use bluetooth for about an hour or so yesterday while driving. had 14 calls so far in these 2 days (one on the bluetooth), but none of the calls were that long (maybe 5 mins?).
the stats screen currently shows:
display 43%
Cell standby 32%
Phone idle 16%,
Voice Calls 9%
I made a post in the bali thread about things I did to help with battery life, but maybe it would be better if there is a dedicated battery life thread somewhere?
I'm running the free version of jd with it not interfering with my oc (1.2 right now) and I have jd set to "aggressive".
Sent from my SGH-T959V using XDA Premium App
just snapped this pic before having to charge my phone again. Battery was down to 7% - over 79 hours on this charge!!
Truly impressive, man!
Sent from my SGH-T959V using XDA Premium App

Engadget lies about Charge battery life

I purchased the Droid Charge based on the Engadget review of the device. In particular, I wanted a device that could get on the LTE network AND have great battery life. This excerpt sold me:
When it comes to battery life, there's no competition. The Charge blitzed through a full day of what we'd consider typical use, coming off the charger at about 9am and not getting slotted back in again until 9pm the next night. Yes, you read that right, two working days of what we'd consider average use with GPS and WiFi on, taking pictures and videos, all powered by a single 1,600mAh battery. Granted, we weren't running our performance benchmarks at the time, but we were hammering the LTE antenna to get some speed results.
I expected to get, at a minimum, a full day's charge using LTE on this device, considering I live in an area where LTE isn't hard to come by (Los Angeles). Alas, I was sorely disappointed when my battery drained within 5 hours with minimal use. 5 hours!!! How can Engadget claim it will last for two days and that "there's no competition." It's totally misleading. The Droid Charge has a serious battery issue which nobody can seem to get to the bottom of. I even tried installing the latest Gingerbread rom to ameliorate the issue, but to no avail. Has anyone gotten a full day's use out of the device when on the LTE network?
Stockmoose16 said:
Has anyone gotten a full day's use out of the device when on the LTE network?
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I just got back from a full day's use on 4G with GPS on, WiFi on and Exchange and Gmail pushing mail as needed. I did not, however, text at all. One of my pages has an IP camera app that updates three feeds (snapshots) at least every five minutes. I am in a pretty consistent 4G area except when I'm at home (Philladelphia suburbs by my home is in a geographically challenged location)!
The phone just turned off as it dropped below 2% so I can't give any battery stats; I've been following the battery recalibration procedure listed here.
Keep the faith...you may not reach two days but you should be able to get a lot more than 5 hours!
rmanaka said:
I just got back from a full day's use on 4G with GPS on, WiFi on and Exchange and Gmail pushing mail as needed. I did not, however, text at all. One of my pages has an IP camera app that updates three feeds (snapshots) at least every five minutes. I am in a pretty consistent 4G area except when I'm at home (Philladelphia suburbs by my home is in a geographically challenged location)!
The phone just turned off as it dropped below 2% so I can't give any battery stats; I've been following the battery recalibration procedure listed here.
Keep the faith...you may not reach two days but you should be able to get a lot more than 5 hours!
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Click to collapse
Out of curiosity, which ROM are you using to get this kind of battery life? I just installed the latest Gingerbread leak and my phone is leaking battery at a rate of 15-20% per hour. I saw that re-calibration post, but I'm wondering if I can simply charge my phone to 100% and place the same ROM on top of the one I already installed. Just want to make sure I don't brick my phone.
Any thoughts?
If you wondering if you can just replace your current COM with the same one you are using by just replacing the files on the SD card then yes you can. If you're asking about re-flashing the same ROM over it again without wiping during the calibration then you can. It shouldn't harm anything.
Schneeder said:
If you wondering if you can just replace your current COM with the same one you are using by just replacing the files on the SD card then yes you can. If you're asking about re-flashing the same ROM over it again without wiping during the calibration then you can. It shouldn't harm anything.
Click to expand...
Click to collapse
I've already installed the latest Gingerbread ROM and updated all my apps and widgets on the device. Can I now charge the device to 100%, bump charge a couple of times (per the instructions in another post on the board), and then restart and wipe the battery stats in recovery mode? Or, do I have to charge to 100% and then completely reinstall the same exact ROM on top of the one I just installed?
Stockmoose.
5 hours? That's questionable that you only got 5 hours with minimal use. No Engadget did not lie, and until the 1700 mah phones are released the end of the month, there is no comparison.
Only with Altered Beast and heavy use was I able to kill the battery in under 8 hours. So I would chalk it up to a bad battery. Not everything is perfect.
Gingerbread is a leak, so trying to compare it to the stock rom does you no good.
You can wipe the battery cache without having to re-flash everything again.
Agreed, I was heavily influenced by the Engadget review and was seriously disappointed when I struggle to get a day's worth of usage out of the stock ROM on 4G.
The Gingerbread leaks have some serious battery issues. I reccomend flashing Humble v1.3 (Froyo) and undervolting. Best battery life by far. I can hammer the LTE radio for a few hours straight.
As a side note, all of Verizon's current 4G Android offerings have awful battery life due to having the dual CDMA and LTE radios. That being said, the Charge evidently has the best life out of the three of them. Future phones (when Verizon dumps CDMA altogether in favor of LTE) will have way better life.
Sent from my Droid Charge
kvswim said:
Agreed, I was heavily influenced by the Engadget review and was seriously disappointed when I struggle to get a day's worth of usage out of the stock ROM on 4G.
The Gingerbread leaks have some serious battery issues. I reccomend flashing Humble v1.3 (Froyo) and undervolting. Best battery life by far. I can hammer the LTE radio for a few hours straight.
As a side note, all of Verizon's current 4G Android offerings have awful battery life due to having the dual CDMA and LTE radios. That being said, the Charge evidently has the best life out of the three of them. Future phones (when Verizon dumps CDMA altogether in favor of LTE) will have way better life.
Sent from my Droid Charge
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Curious while running Humble v1.3 and undervolting which kernel are you running atm. And second what undervoltage settings are your using atm currently so yo uare getting random reboots. Reaosn I ask is I just flashed v1.3 this am and updated to Imnut's newest OC kernel but have left it alone right now without touching any voltage settings. So any input would be great and I'd like to set mine nad check it out to see if I can get even better battery life out of it. Thanks
Pro tip: Never buy anything based solely on one review.
Sent from my SCH-I500 using XDA App
will2live said:
Curious while running Humble v1.3 and undervolting which kernel are you running atm. And second what undervoltage settings are your using atm currently so yo uare getting random reboots. Reaosn I ask is I just flashed v1.3 this am and updated to Imnut's newest OC kernel but have left it alone right now without touching any voltage settings. So any input would be great and I'd like to set mine nad check it out to see if I can get even better battery life out of it. Thanks
Click to expand...
Click to collapse
This should help.
I get about 12 hours with minimal to moderate usage throughout the day 4G, wifi/gps off for the majority. I might have to try this bump charging, though. Would be incredible to get a solid day out of this thing.
9 hours of using my phone to check XDA post, playing bubble buster, and texting and my phone is at 77%. Only thing different on my phone is i'm using SetCPU to undervolt. But even with that. if you are only getting 6 hours with minor use. There is something wrong.
I just did a solid 36 hours by staying on my home Wifi almost the whole time. I'm using Gummy Charged 1.8. Before everyone starts calling bull----, I probably used the phone a total of 1 hour over that period of time.
Normally, it lasts 14-18 hours with only Exchange mail and an hour of gaming (no facebook, social networks, etc.)
If I recall correctly, battery life was an issue with the gingerbread leaks.
I did the battery charging cycles as mentioned above and erased the battery stats last night. Now I'm down to 20% after 6 hours of light use. That's pretty much the same way as before. What did I do wrong?
robstamack said:
I just did a solid 36 hours by staying on my home Wifi almost the whole time. I'm using Gummy Charged 1.8. Before everyone starts calling bull----, I probably used the phone a total of 1 hour over that period of time.
Normally, it lasts 14-18 hours with only Exchange mail and an hour of gaming (no facebook, social networks, etc.)
If I recall correctly, battery life was an issue with the gingerbread leaks.
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Click to collapse
Not a chance I'll say bull**** that is for sure. When leaving the device on Wifi battery life will DRASTICALLY increase. The radio in the device is what is eating it up. If you want to conserve even more battery I've found and don't ask me why if you actually turn off Mobile data and then turn Wifi on it will help even more.
Ran a test last night and with over 7hrs on Wifi it dropped on 5%
robstamack said:
I just did a solid 36 hours by staying on my home Wifi almost the whole time. I'm using Gummy Charged 1.8. Before everyone starts calling bull----, I probably used the phone a total of 1 hour over that period of time.
Normally, it lasts 14-18 hours with only Exchange mail and an hour of gaming (no facebook, social networks, etc.)
If I recall correctly, battery life was an issue with the gingerbread leaks.
Click to expand...
Click to collapse
I've gotten 24 hours with about 20% to spare going in and out of Wifi and 4G. I had 3 gmail accounts sync'd to the phone and I probably streamed about 20 minutes worth of music using Google Music. But, I probably used the phone for a combined total of 1.5 hours over that period, and it was a slow day, so I actually didn't get many emails.
I think I was using one of the Froyo Gummy ROMs.
I don't think it's very fair to use custom ROMs and then complain about battery life. Was your battery life lower than 5 hours on the stock ROM? Did you even use the stock ROM?
06ms6 said:
I don't think it's very fair to use custom ROMs and then complain about battery life. Was your battery life lower than 5 hours on the stock ROM? Did you even use the stock ROM?
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Try reading more than skimming the OP. He implied that he started stock there, and about 3 posts down said that it was ridiculous that even the stock ROM couldn't get 5 hours.
doodlebro said:
Try reading more than skimming the OP. He implied that he started stock there, and about 3 posts down said that it was ridiculous that even the stock ROM couldn't get 5 hours.
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My apologies, I misread his second to last sentence in the OP.
Either way, 5 hours is not normal and I wouldn't blame the Charge just yet. Not sure if you guys have official 2.3 yet (I'm a Thunderbolt owner myself), but I know the Froyo ROMs on the TB have a very noticeable increase in battery life compared to the Gingerbread leak builds.
I get about 6-8 hours of heavy use on my 2.3 ROM on the TB. Probably closer to 13+ with Froyo.

[Q] Terrible battery life

Alright so my skyrocket is rooted with the faux kernel and sky ics 7.4 speed rom. My battery lasts me roughly until 6pm everyday when taken off the charger at 6am for school (obviously aren't using it during school) so that to me, is crap battery life for such a large battery capacity especially only using HSPA+ no LTE. cpu set at 1.5ghz uv -75mv, ondemand governer, screen off to 384mhz. Noticed Android System uses nearly as much battery as display, at minimum brightness.
Can anyone help me reduce this or give me any tips for better battery life?
in the pics below, i left my phone idle overnight after a 100% charge before going to bed at around 12am. woke up with the phone at 98%.
under moderate useage it will die 10%/45 minutes.
img138.imageshack.us/img138/7115/sc20120229175536.png
img822.imageshack.us/img822/237/sc20120229175551.png
rccar said:
Alright so my skyrocket is rooted with the faux kernel and sky ics 7.4 speed rom. My battery lasts me roughly until 6pm everyday when taken off the charger at 6am for school (obviously aren't using it during school) so that to me, is crap battery life for such a large battery capacity especially only using HSPA+ no LTE. cpu set at 1.5ghz uv -75mv, ondemand governer, screen off to 384mhz. Noticed Android System uses nearly as much battery as display, at minimum brightness.
Can anyone help me reduce this or give me any tips for better battery life?
in the pics below, i left my phone idle overnight after a 100% charge before going to bed at around 12am. woke up with the phone at 98%.
under moderate useage it will die 10%/45 minutes.
img138.imageshack.us/img138/7115/sc20120229175536.png
img822.imageshack.us/img822/237/sc20120229175551.png
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I bought a external charging kit + spare battery package that samsung sells for around $40. An external charger (equivalent to charging your phone on AC while the power is turned off) is the best charging you can give your battery. The worst type of charging is charging your battery while the phone is on connected to a computer through USB.
Of course, who wants to charge with the phone turned off? That's why you should get this package. I never worry about charging my phone. When I'm running low, I just do a quick battery swap. A seriously annoying issue with this phone becomes a non-issue.
I also make sure I try to do a deep cycle charge. I always let it drain to around 5-15% before I swap batteries.
kind if irrelevant but this might be the first phone I might not root or mess with for a while 2nd day of use.stock everything and i'm running on 1 day and like 6+ hours on battery idk if that's the born or not but i'm not on lte either just thought I would share this lol
Sent from my SAMSUNG-SGH-I727 using XDA
derik.p said:
kind if irrelevant but this might be the first phone I might not root or mess with for a while 2nd day of use.stock everything and i'm running on 1 day and like 6+ hours on battery idk if that's the born or not but i'm not on lte either just thought I would share this lol
Sent from my SAMSUNG-SGH-I727 using XDA
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Click to collapse
derik, how often are you using your phone and do you have facebook or any apps pushing notifications?
I do have Facebook and the accuweather widget that auto updates also Yahoo email.use the browser a moderate amount sent and received a good 200 texts.about 2 hours of calls total and mess with settings and use this app..id say pretty moderate use but that's pretty good I think and i'm coming from the infuse
Sent from my SAMSUNG-SGH-I727 using XDA
rccar said:
Alright so my skyrocket is rooted with the faux kernel and sky ics 7.4 speed rom. My battery lasts me roughly until 6pm everyday when taken off the charger at 6am for school (obviously aren't using it during school) so that to me, is crap battery life for such a large battery capacity especially only using HSPA+ no LTE. cpu set at 1.5ghz uv -75mv, ondemand governer, screen off to 384mhz. Noticed Android System uses nearly as much battery as display, at minimum brightness.
Can anyone help me reduce this or give me any tips for better battery life?
in the pics below, i left my phone idle overnight after a 100% charge before going to bed at around 12am. woke up with the phone at 98%.
under moderate useage it will die 10%/45 minutes.
img138.imageshack.us/img138/7115/sc20120229175536.png
img822.imageshack.us/img822/237/sc20120229175551.png
Click to expand...
Click to collapse
I have a JuiceDefender profile that might be able to help you, send me a message. Also check my thread on the battery thing and see if it works for you.
I'd say that 12 hrs is pretty normal provided you don't shut down radios.
Sent from my SGH-T989 using Tapatalk
Try mhx's new rom 2.6, by far best on battery life. Seeing 16-26 hours based on people reviews...
Sent from my SAMSUNG-SGH-I727 using xda premium
My battery is also terrible i'm using an extended battery and now i can make 16hours of average usage
Inviato dal mio Galaxy Nexus usando Tapatalk
Stock kernel sux for on screen time. Use a custom kernel and undervolt. I was getting 8 hours on stock, k or I'm getting about 13 with heavy usage, so trust me when I say u don't need to flash a new rom, but a kernel is a must. Strongly recommend sky-kernel 009m by faux
Sent from my SGH-I727R using XDA
Anyone wanna tell me how to extract the JuiceDefender backup so I can share it?
Sent from my SGH-T989 using Tapatalk
If not mistaken if hit backup in JD it will put backup file on root of sdcard.. it does mine
Sent from my SAMSUNG-SGH-I727 using Tapatalk
icenight89 said:
Stock kernel sux for on screen time. Use a custom kernel and undervolt. I was getting 8 hours on stock, k or I'm getting about 13 with heavy usage, so trust me when I say u don't need to flash a new rom, but a kernel is a must. Strongly recommend sky-kernel 009m by faux
Sent from my SGH-I727R using XDA
Click to expand...
Click to collapse
I think I read somewhere that faux's kernels don't support Wifi tethering. Is this still true? Do other custom kernels have this problem?
I flashed the Paradox rom on the T989 forums with Faux's Skyrocket kernel and I didn't download System Tuner with this ROM (Just kept it the way it was) and it has zero lag and from 6 am to 2am the next night, I only went down to 32% so battery life is the most amazing I've had ever
I had a similar problem on my old captivate. I found a rogue app that was using a ton of battery. Like 74% of my battery. Bat stats said it was Android OS using it. Delete some of the recent apps you may have installed b4 you noticed the bad battery life. I am on SkyICS 7.4 my battery life is pretty good. The rogue app that I found was a game Pirates from Disney.
Sent from my SAMSUNG-SGH-I727 using XDA
Running SkyICS 7.4
I put up a thread with JuiceDefender profile for all. Check it out and let me know how it works.
Sent from my SGH-T989 using Tapatalk
12 hours isn't too bad for a Skyrocket.
On my phone, I'm rooted, running SkyIce ROM with Faux Kernel. My usage is as follows:
Display-64%
Android System-6%
Android OS-5%
Cell Standby-2%
I average around 10 hours of heavy (constant) use, and about 16 hours with normal use. I'm quite satisfied with the Skyrockets battery life. I've only had the phone for 10 days, so the battery is still settling in. It's much better than the battery life on the SGS II, which got around 8-11 hours.
Sent from my SAMSUNG-SGH-I727 using XDA Premium App

[Q] Best Noted Rom/Kernel Combo for Battery Life?

I have a Nexus S 4G. Right now i'm running CM7 with a Trinity Kernel. so far i get about 8~ hours of battery out of it. I'm really convinced there is a better combo out there. Any takers? Preferably GB, but I can deal with ICS if it means a longer battery life. On screen time is about 2-3 hours throughout a charge. I know there is something out there! help me out XDA!
Dude.... 8 hours.... I hope you mean screen time..... else everything would be better than what you have now!
Greetzz, Jojoost.
Sent from my Nexus S using xda premium
8 hours is crazy...This was taken on CNA 1.4 + Matr1x cfs 17.5 BEFORE calibrating my battery.
yeah, idk why only 8 hours. maybe i am using my phone too much? just got home from school, it's been 5 hours and 10 minutes. phone is at 20%. 50% of display time. please help! best recommendation? your pictures are not showing up btw. thanks!
I fixed the images in the last post and I took another one today.
iPrism said:
8 hours is crazy...This was taken on CNA 1.4 + Matr1x cfs 17.5 BEFORE calibrating my battery.
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Click to collapse
probably a stupid question, but how do you calibrate your battery, I've been somewhat disappointed lately in my battery life.
tortilaman said:
probably a stupid question, but how do you calibrate your battery, I've been somewhat disappointed lately in my battery life.
Click to expand...
Click to collapse
The easiest way is to download the battery calibration app off Google Play and follow the instructions.
https://play.google.com/store/apps/details?id=com.nema.batterycalibration&feature=search_result#?t=W251bGwsMSwxLDEsImNvbS5uZW1hLmJhdHRlcnljYWxpYnJhdGlvbiJd
or do it manually through CWM recovery.
1. Fully charge your battery.
2. Boot into recovery
3. Go to Advanced->Wipe Battery Stats and reboot.
4. Recommended to let your battery fully discharge and then fully recharge without break
5. Profit.
i calibrated my battery, so hopefully it increases the battery life! i would still like rom/kernel combo recommendations though thanks!
KalimĀ“s CM9 NIGHTLY 20120310 has amazing battery life with standard kernel. Much better then any ROM before.
hashtagbops said:
i calibrated my battery, so hopefully it increases the battery life! i would still like rom/kernel combo recommendations though thanks!
Click to expand...
Click to collapse
If you want GB i recommend Oxygen and for ICS Codename Android.
Sent from my Nexus S 4G using XDA
Euroskank CM9 kangs, updates every day, works like a charm for me, running with Trinity T132, get about 20 hours battery life with moderate use.
Sent from my Skankwich Nexus using XDA app
Don't measure you battery life in terms of time since last charge. Measure it in terms of on-screen time.
2-3 hours of ON SCREEN TIME is average battery life.
I can roughly get about 4-5 hours if my brightness is down to level 6 (using brightness levels.) In my opinion the ROM doesn't really affect the battery life at all. Mainly the kernel you are using, scheduler, govenor, maximum frequency etc. I recommend using the Matr1x kernel as bedalus has tested that it uses the least amount of power of all kernels under similar conditions.
15 hours,1d, 8hrs since last charge ~ all don't mean a thing since your phone shouldn't drop any significant amount of percentage during DEEP SLEEP. When your phone is ON (screen on) that is when your battery should deplete.
If I leave my phone overnight for about 10 hours, I would drop maybe 1%. That's because the screen wasn't on; no activity needed significant power.
My on screen time is 3-4 hours, last time I checked. The crazy stuff is when my phone screen is off. Last night I went to bed for 9 hours battery was at 85. Woke up at 84. Two nights ago I went to bed for 10 hours with 90%. Woke up at 90%. I've never had such great off screen profiles. I'm going to calibrate the battery today and hope for something better.
Nexus S (GSM i9020a)
AOKP (Milestone 4)
Air Kernel (3.45)
OC 800/100 (Lionheart)
LIve OC (100 - Noop)

Battery life is improved with custom ROM

Just an FYI. Since I put the Emancipation ROM on my Infuse, my battery life has almost doubled. The ROM is very stable as well. Fantastic work by the Dev(s) to create such an excellent ROM!
Curious what numbers are you getting with the emancipation ROM?
I'm averaging 12 hours, lowest brightness, wifi on all time, screen on 2 hours 30 minutes, music player 50 minutes.
Is this good?
Sent from my SAMSUNG-SGH-I997 using Tapatalk
ateebtk said:
Curious what numbers are you getting with the emancipation ROM?
I'm averaging 12 hours, lowest brightness, wifi on all time, screen on 2 hours 30 minutes, music player 50 minutes.
Is this good?
Sent from my SAMSUNG-SGH-I997 using Tapatalk
Click to expand...
Click to collapse
I'm getting about 18 - 20 hours per charge (auto-brightness, wifi etc.). The phone isn't used very much though (which is partly why my battery life is so long). Sounds like you use yours more than mine. However, when I was running the "stock" ROM and using the phone the same way, I was only getting around 12 hours per charge. It may have to do with the extra (bloatware) that was on the stock ROM (which would cause the battery to drain faster even when idle). The Emancipation ROM has obviously cleaned up the bloatware and battery life is much better.
MrCanuck said:
I'm getting about 18 - 20 hours per charge (auto-brightness, wifi etc.). The phone isn't used very much though (which is partly why my battery life is so long). Sounds like you use yours more than mine. However, when I was running the "stock" ROM and using the phone the same way, I was only getting around 12 hours per charge. It may have to do with the extra (bloatware) that was on the stock ROM (which would cause the battery to drain faster even when idle). The Emancipation ROM has obviously cleaned up the bloatware and battery life is much better.
Click to expand...
Click to collapse
cool, yea I got the above numbers using the 1st amendment emancipation ROM.
I'm keeping it
Sent from my SAMSUNG-SGH-I997 using Tapatalk
Nice
Sent from inside a XXJW4 Ported black hole

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