Database Users

Is any one else getting terrible battery life with jk6

I get 4 hours tops.
I was getting almost 18 on j2.
What did i or need to do?

Did you installed another kernel?
I get great battery life...

I installed the stock jk6 that som posted.

lemarg said:
I installed the stock jk6 that som posted.
Click to expand...
Click to collapse
Oh the post with the words and the zip file?
Lol we need more than that to help.... what post?
I get anywhere from 10-16 hours on Macnut 13 with JK6, depending on usage

4 hours with what?
Sent from my SGH-T959 using XDA App

I get great battery life with jk6. 5 hours idle and didn't drop even one percent, but it drains fast if I use wifi.

What if you delete MediaHub and DRMua?
I seem to get much better battery without those.
I also enable WIFI during sleep... it's in the advanced settings under wifi.
And of course I remove all of the other bloat apps.

JK6 with all the crap removed and I average 18-24 hours with moderate use. The lowest I've seen is 12 hours and I had the screen on for almost 7 of those.
Looking forward to when we get source code and can run an undervolted kernel.

I get really great battery with JK6. I suggest you to do battery conditioning.

JK6 has great idle battery life for me but as soon as i start to use the phone for low activities it drain faster. By "low activities" i mean as in making call, use map, navigation, changing settings.....
Here is my usage report:
3h since unplugged from over night charge
73% left
Display on for 45m 19s (lowest setting w/ auto brightness turn off)
Voice call 45m 21s
Cell standby 3h
Phone idle 2h 15m
To me this was worst than when i was running JI6. Also i lost 3G every now and then in the same area that i travel everyday.

sumasage said:
JK6 has great idle battery life for me but as soon as i start to use the phone for low activities it drain faster. By "low activities" i mean as in making call, use map, navigation, changing settings.....
Here is my usage report:
3h since unplugged from over night charge
73% left
Display on for 45m 19s (lowest setting w/ auto brightness turn off)
Voice call 45m 21s
Cell standby 3h
Phone idle 2h 15m
To me this was worst than when i was running JI6. Also i lost 3G every now and then in the same area that i travel everyday.
Click to expand...
Click to collapse
Using maps and navigation are some of the most power-consuming tasks you can do with this phone. Navigation in particular killed my Vibrant dead in a few hours.

The kswap process eats a upon of battery when in use on the jk2 roms. I thought jk6 had this fixed, but it may just be better on the custom roms. I get great battery life on my jk6 rom.
Sent from my SGH-T959 using XDA App

Tpavey said:
The kswap process eats a upon of battery when in use on the jk2 roms. I thought jk6 had this fixed, but it may just be better on the custom roms. I get great battery life on my jk6 rom.
Sent from my SGH-T959 using XDA App
Click to expand...
Click to collapse
Are you running stock jk6 or custom jk6 rom?

Getting excellent battery life, 1+ day with 30% left when I last charged it last night. I moderately use it too, some browsing/gaming, along with heavy texting and occassional GPS use.

lemarg said:
I get 4 hours tops.
I was getting almost 18 on j2.
What did i or need to do?
Click to expand...
Click to collapse
I had similar battery life using various custom kernels. Installed Aux. 2.1 with stock. With heavy use I am running around 8 hours. Normal use around 12-16. Those other kernels will eat your battery alive. Try a stock kernel. Conditioning doesn't do crap.

Fedburin said:
I had similar battery life using various custom kernels. Installed Aux. 2.1 with stock. With heavy use I am running around 8 hours. Normal use around 12-16. Those other kernels will eat your battery alive. Try a stock kernel. Conditioning doesn't do crap.
Click to expand...
Click to collapse
noticed this also, doesn't really make a difference to me.

Most of these problems are user error. I woke up today with around 70% this mourning at 7am. Its 12 hrs later and im at 42%.
My Day:
combined 45min of calls
atleast 30 txt message
Ton of emails and they sync all day
Started my music player at 9 and didnt pause until 5pm. playing out of speaker
Browse the internet off and on all day
downloaded a 100mb mixtape torrent through 3g
screen brightness at about 60%
Probably a couple other things but app called Battery Left is telling me I have 10hrs left.
I really suggest running all stock. I need no lagfix/special kernal or anything with the newest leaked samsung firmware. Havent had a single issue since I switched to this rom.

I'm sorry, but I have a very hard time believing that, ALL THAT, only took 28% battery.

17%after a couple more torrents. Not wirth trying to prove but the stock rom made my extended battery worthless besides special occasions.
Sent from my SGH-T959 using XDA App

Thanks for the help. My battery died after four hours as expected. Plugged in and reconditioned and let it charge till it was full. Now It's been about five hours unplugged and I'm down to ninety six percent.
However as some of you have posted my battery drains VERY fast once I use it sparsely. It dropped almost 5 percent after a few mins of browsing the market. Weird. But whatever standby is amazing.

Bettet battery life rom?

Hey can someone please tell me in which rom the battery lasts longer???
Sent from my G2 using XDA

PLEASE search. You have 253 posts, you should know by now this is asked every single day

I'm on stock 2.3.4 rooted, and I just put my phone on the charger with 14 hours since last charge @ 56% battery. It was light to moderate use, will let you know tomorrow if it was a fluke. Sundays are light days, but Monday will tell the truth.
Sent from my T-Mobile G2 using XDA Premium App

21productionz said:
I'm on stock 2.3.4 rooted, and I just put my phone on the charger with 14 hours since last charge @ 56% battery. It was light to moderate use, will let you know tomorrow if it was a fluke. Sundays are light days, but Monday will tell the truth.
Sent from my T-Mobile G2 using XDA Premium App
Click to expand...
Click to collapse
That's what I'm using at the moment but I also what something more customizable rom
I was going to try cyanogenmod 7 but I don't know how is the battery in that rom!
Sent from my G2 using XDA

OMG I just flashed cm7 a while ago and the battery life is amazing!!!!!
I'm on xda for about five minutes and it hasn't changed from 100
Amazing!!!
Sent from my G2 via XDA running Cyanogenmod 7

Use coredroid 1.0 it has fantastic battery life. Its a sense Rom but it has the best battery life I've used on any Rom.
Sent from my Synergy Rom using XDA App

Battery life today was average. I got about 9 hours out of it. I had left wifi on though will test again tomorrow.
Sent from my T-Mobile G2 using XDA Premium App

my battery conservation method is simple:
- Turn on wifi and leave it on
- Set the phone to GSM only.
This almost doubled my battery life using stock HTC gingerbread.

Fludizz said:
my battery conservation method is simple:
- Turn on wifi and leave it on
- Set the phone to GSM only.
This almost doubled my battery life using stock HTC gingerbread.
Click to expand...
Click to collapse
Why would turning on wifi improve battery life?

The idle time on Unity is very good. I'm somewhere around day 2-3/4and just now getting to 50%
However when you're using it the battery tends to die pretty quick.

Pyromod! its amazing, I get about two days battery life.
I never worry anymore, If i'm going out of the house around 5 PM with 20 percent battery life, I'm good for the rest of the night and morning.

astriaos said:
The idle time on Unity is very good. I'm somewhere around day 2-3/4and just now getting to 50%
However when you're using it the battery tends to die pretty quick.
Click to expand...
Click to collapse
As is true with ANY rom you use lol.

Right now I'm using cm 7 and when its charged to 100 it stays in 100 for a long time than it drains pretty quick
Sent from my G2 via transperent XDA app running Cyanogenmod 7.1

Shadow_Android said:
Right now I'm using cm 7 and when its charged to 100 it stays in 100 for a long time than it drains pretty quick
Sent from my G2 via transperent XDA app running Cyanogenmod 7.1
Click to expand...
Click to collapse
That's how it is. The firmware interacts with the battery in a way that any % over 90% is considered a full charge, so sometimes this comes away with the phone sitting at 100% for a long time (up to like 2 hours for me if I don't use the phone much), then draining normally. It doesn't drain fast, it just drains fast compared to the battery sitting at 100%.

martonikaj said:
As is true with ANY rom you use lol.
Click to expand...
Click to collapse
Not true. CM6 had a drain rate of 3%/h on idle with no connections and me popping it on once or twice an hour to get a text.
Cm7 was around the same. All stock clock with downclock with the screen off to around 500mhz.
Unity's idle rate is only about 1%/3-4 hours. It's insane.

astriaos said:
Not true. CM6 had a drain rate of 3%/h on idle with no connections and me popping it on once or twice an hour to get a text.
Cm7 was around the same. All stock clock with downclock with the screen off to around 500mhz.
Unity's idle rate is only about 1%/3-4 hours. It's insane.
Click to expand...
Click to collapse
No, I mean you clearly are going to drain fast when using a phone compared to idle.
And any ROM with a proper kernel can be undervolted / underclocked with apps to disable data in order to drain less battery in idle.

Shadow_Android said:
OMG I just flashed cm7 a while ago and the battery life is amazing!!!!!
I'm on xda for about five minutes and it hasn't changed from 100
Amazing!!!
Click to expand...
Click to collapse
I can't tell if you're kidding or not, but the phones and ROMs I've seen all exhibit this behaviour. The OS will report the battery at 100% for a long time, as if the battery has more capacity than the OS knows about. A more accurate estimate would be to wait until you're at 99%, and then see how fast the meter drops. Better yet would be to use something like Current Widget or Battery Monitor Widget to record real-time current draw, then calculate how much energy has been consumed.
I wish there was a way to calibrate what "100%" actually means, but I don't think that is possible, since it is a hardware limitation.

[Q] Battery issue

Im not sure what classes as good battery life on the N7. But after looking at other peoples reports im convinced mine isn't that good.
Im using CM10 and Trinity Kernel, both latest versions.
As of now these are my stats.
Screen on 3 hours
20 Hours on battery, with 16% left.
Anyone any advice or tips?

superleeds27 said:
Im not sure what classes as good battery life on the N7. But after looking at other peoples reports im convinced mine isn't that good.
Im using CM10 and Trinity Kernel, both latest versions.
As of now these are my stats.
Screen on 3 hours
20 Hours on battery, with 16% left.
Anyone any advice or tips?
Click to expand...
Click to collapse
IMO not good at all. How long since you flashed the rom/kernel?
I usually give it a few charging cycles before judging a rom/kernel to be good or bad
Obviously everything depends on your bightness levels, clock speed and undervolting.
What clock speed are you running at? I am on AOKP and using faux's kernel at 1.2GHz and battery is double yours. My brightness is quite low though
Also depends on what you're doing on it

Auto brightness.
TKT App, limiting it to 1150Mhz. UV by 25mv.
Basic browsing, facebook, twitter etc. Odd game for 5-10 mins.
Flashed the ROM & Kernel Yesterday, but its being acting like this for a while on previous ROMs tbh.

Consider using BetterBatteryStats: http://forum.xda-developers.com/showthread.php?p=15869868 to find what could be the cause.
Sent from my Nexus 7

yeah going to look into that.
For now, ive changed my kernel to Faux, and undervolted by 75mv. Also changed the limit to 1.1Ghz, using System tuner.
Going to charge to 100%, calibrate, and then install betterbatterystats to see what causes it. Noticed my unit seems a little warm, well, System tuner reporting it at about 45C, but then that could be because ive been using it for a good 10-15 mins installing and setting things up. (Also using a Gel case, guessing that wot help heat escaping!)

Well that's not too bad mines at 12 hrs and 37% but Im constantly on mine all day
Sent from my Nexus 7 using xda app-developers app

Okay.... have an issue!
Have been using the Nexus 7 happily today, got it down to 6% and it switched off by itself. I don't mean powered down, it simply died.
1. Plugged in the mains lead and tried to boot up but it wouldn't.
2. Tried again 5mins later and this time it showed the white battery charging icon so I left it.
3. Came back 2 hours later and with it still charging I powered it back up, only after it had loaded the battery percentage has only increased to 8%
So, anyone care to help me out here...... has anyone else experienced this?
Just had another peek (it's now been another 30mins which means 2hrs 30mins on charge) and it's only increased by 1%.
So from 6% when it died to 2hrs 30mins later on charge it's only risen 3%
It's a stock 16GB device.

[Q] [4.2] How's your battery life?

I've updated to 4.2 as soon as it came out, few apps didn't work but I soon noticed that it wasn't the issue.
The battery life on 4.2 seems to have drastically decreased for me. I was able to watch over 10 hours of video on maximum brightness with Wi-Fi and maximum volume, after update on MINIMUM brightness and half the volume I was able to pull off about 6 hours.
Did your battery life improve or gotten worse on 4.2?

Stand by time for me seems to have improved. No data to back that up, but I usually know where my battery is at anytime of day and it has been higher than usual since the update.

Nospin said:
Stand by time for me seems to have improved. No data to back that up, but I usually know where my battery is at anytime of day and it has been higher than usual since the update.
Click to expand...
Click to collapse
For me it seems to drain very fast, ever since the update AND I've got less apps since I did clean install. I kept same settings for Wi-Fi etc. Even Stand by seems to consume a lot more battery, I mean it drained 40% during the night. I wasn't downloading or anything.

Definitely worse. It even takes longer to charge.

The battery life after 4.2 update is awful.

Bogdan-xd said:
Definitely worse. It even takes longer to charge.
Click to expand...
Click to collapse
I've just noticed that too. I was able to charge it overnight from scratch with extension cable fully. Now it goes just above 90%.
AndroidSmitty said:
The battery life after 4.2 update is awful.
Click to expand...
Click to collapse
I really hope they fix it as I'm clearly not the only one.
Sent from my Nexus 7 using xda app-developers app

Great!! I updated to 4.2 Tuesday and my last charge was Sunday afternoon. Still going strong with moderate use.
Sent from my SGH-T679 using xda app-developers app

You guys should give it a few battery cycles before making a proper judgement
Sent from my Infected ViperVivo

I updated to 4.2, and it drained my battery from 100% to 78% in 12 hours, with idle!!!
<<stock ROM, no-rooted, stock kernel, no installed apps>>

No difference for me. If anything it is better. Left my tablet idling after charge last night and it was still 100 percent when I woke up. On 4.1.2 it would generally go from 100 to 98 left overnight. Screen on time seems about the same.
Sent from my Nexus 7 using xda app-developers app

Minhlachim said:
I updated to 4.2, and it drained my battery from 100% to 78% in 12 hours, with idle!!!
<<stock ROM, no-rooted, stock kernel, no installed apps>>
Click to expand...
Click to collapse
You got big problem then. Wipe it might help

Definitely worse. Using it for ten minutes after a charge drains it by nearly ten percent, and this was after a full charge cycle. On conservative use it lasts me 6, maybe 7 hours, whereas on 4.1.2 with much more running at once I would ten hours easily. Its not that much, yeah, but I'm still going to downgrade. It's a good thing Google actually lets you downgrade unlike Apple.

for me battery life is much better. i get 17 hours with screen on 56% .

Mine has decrease a lot... now the back of my nexus 7 gets hot and drains the battery really fast.... anyone has a link to a better ROM or one that gives u a better battery life
?
Sent from my Nexus 7 using xda app-developers app

man i follow my guide to update to 4.2 and i dont get any battery issues , if you wanna try http://forum.xda-developers.com/showthread.php?t=1990258

My battery is much improved. Before I was getting about 5 hours of screen on time with heavy use. After the update, I'm getting 7 hours of screen on time with heavy use.

Seems slightly better on stand by..that's for sure. Too soon to tell otherwise.
Sent from my Nexus 7 using xda app-developers app

Wow! This worked out great... Now it doesnt get hot anymore and i have more battery life... Thanks a lot!!!
Sent from my Nexus 7 using xda app-developers app

Hello,
After the update I noticed the tablet rebooting occasionally, so I flashed from scratch scrosler's 4.2 rom. The dev said is the official one, he just added root. I lost 25% in 7 hours of moderate use with auto brightness . Over the night battery remained at 100%.
Sent from my Nexus 7 using Tapatalk 2

After few battery cycles, I still have to keep my opinion of worse battery life sadly.
Just looking right now under battery settings, there seem to be many more "Google" things "Android OS (as it was before) Google Services, Android System, Tablet Idle, and Maps and Media server also seem to be taking up more battery.

4.2.2 stock battery life worse?

I'm noticing that battery life is worse in 4.2.2 - I was on cm10.1 nightlies w. Cm10.1 kernel and was getting about 10 hours screen-on time before I needed to charge, but I'm getting 7 hours at best on 4.2.2 stock (rooted, bootlader locked).
I have the usual culprits turned off - Google now, location services, currents background updates etc. So I hoped I would at least get the same.
Anyone else?

eager27 said:
I'm noticing that battery life is worse in 4.2.2 - I was on cm10.1 nightlies w. Cm10.1 kernel and was getting about 10 hours screen-on time before I needed to charge, but I'm getting 7 hours at best on 4.2.2 stock (rooted, bootlader locked).
I have the usual culprits turned off - Google now, location services, currents background updates etc. So I hoped I would at least get the same.
Anyone else?
Click to expand...
Click to collapse
Put the latest cm10.1 build on. They merged in 4.2.2.

eager27 said:
I'm noticing that battery life is worse in 4.2.2 - I was on cm10.1 nightlies w. Cm10.1 kernel and was getting about 10 hours screen-on time before I needed to charge, but I'm getting 7 hours at best on 4.2.2 stock (rooted, bootlader locked).
I have the usual culprits turned off - Google now, location services, currents background updates etc. So I hoped I would at least get the same.
Anyone else?
Click to expand...
Click to collapse
I have never gotten more than 8 hours of battery life with 4.2.1, but so far on 4.2.2 I'm down to 73 with 3:30 screen time, so I guess it got better for me
Sent from my Amaze 4G using xda app-developers app

blackhand1001 said:
Put the latest cm10.1 build on. They merged in 4.2.2.
Click to expand...
Click to collapse
Yes! I just read that. I am just about to do it now.

I can't comment on battery life, but did notice something a little alarming with regard to battery drain. Was on the couch for an hour talking to someone using viber, just plain text. No video or audio. Tablet was plugged into the wall, and after about an hour i noticed that the battery had gone from 100% to 98%. Should not be possible for a simple messaging app to cause the battery to drain faster than it can charge. screen was on auto brightness as well.

hughlle said:
I can't comment on battery life, but did notice something a little alarming with regard to battery drain. Was on the couch for an hour talking to someone using viber, just plain text. No video or audio. Tablet was plugged into the wall, and after about an hour i noticed that the battery had gone from 100% to 98%. Should not be possible for a simple messaging app to cause the battery to drain faster than it can charge. screen was on auto brightness as well.
Click to expand...
Click to collapse
Did you look at your battery information to see what was using the most energy? Display is always far and away the highest for me, and if it was on Auto Brightness, depending on the lighting around you, it could have been running at full brightness...which would be a pretty massive drain on battery.

hughlle said:
Tablet was plugged into the wall, and after about an hour i noticed that the battery had gone from 100% to 98%. Should not be possible for a simple messaging app to cause the battery to drain faster than it can charge
Click to expand...
Click to collapse
Once the device reaches a full charge it cuts off the power draw to avoid damaging the battery. It's normal for it to hover between 97% and 100% while still plugged in.

I barely get 6 hours of use now.

Jackietreehorn said:
Did you look at your battery information to see what was using the most energy? Display is always far and away the highest for me, and if it was on Auto Brightness, depending on the lighting around you, it could have been running at full brightness...which would be a pretty massive drain on battery.
Click to expand...
Click to collapse
I did not look at battery usage, but the screen was generally dimmed, where as normally i have it manually set to full brightness, and nothing was running in the background that would not normally be running, that is to say nothing other than android stuff, it's basically a tablet for internet, email and skype/viber while i watch films etc on my computer
Fromako said:
Once the device reaches a full charge it cuts off the power draw to avoid damaging the battery. It's normal for it to hover between 97% and 100% while still plugged in.
Click to expand...
Click to collapse
Indeed, but this has never happened before and i typically run the device with screen on maximum brightness. on 4.2.1 it would always show 100% when plugged in, i never once saw it drop to 99% or below.
So without further analysis of the issue, it could either be that something is sucking more power, which would seem odd, or that the update has brought about changes to the way the device charges, or changes to the way the device displays the battery level.

Damn guys, I don't know what I'm doing wrong, but I'm jumping around in happiness when I manage to get over 6 hours of screen time lol.

I've been on battery for the past 12+ hours with about 6 hours 15 minutes screen time and still have 36% battery left. Battery seems at least as good as on 4.2.1.
... beamed from my Nexus 10 to your planet

bee55 said:
Damn guys, I don't know what I'm doing wrong, but I'm jumping around in happiness when I manage to get over 6 hours of screen time lol.
Click to expand...
Click to collapse
if you are rooted change your processor speed to 1.5gHz, it really helped me get better battery life
so far at 6 hours of youtube with 50% left to go

filthygoat223996 said:
if you are rooted change your processor speed to 1.5gHz, it really helped me get better battery life
so far at 6 hours of youtube with 50% left to go
Click to expand...
Click to collapse
Thanks, I've done this now, and get about 5~6 hours of screen time now with around 50% left.

My battery life has gotten considerably better after updating to 4.2.2. The biggest improvement is how little the battery life drains on standby...it's nearly nonexistent.
Sent from my Nexus 10 using Tapatalk HD

Standby has always been great for me. With stock rooted 4.2.2 I'm getting great battery life. Loses maybe 2% after 8-10 hours idle. In constant use I'm averaging 11 hours on screen. I have everything on and synced but as I'm indoors I stick to 30% brightness. Also, I'm mostly just browsing. With games the life would be less for sure. Totally satisfied with the battery life of this tablet. If yours is getting truly bad battery life I suggest you try searching for rogue apps. After that, try a complete reflash of the stock image which deletes everything. Another thing I've found that helps performance is setting the WiFi band manually. As I have a pretty good router that utilizes both the 5 and 2.4ghz bands I set mine to 5ghz only. I live in a town house and 2.4ghz can be pretty congested even after turning my antenna power up to 150mv or greater. The 5ghz band is pretty open. I'm getting load times on webpages comparable to my i5 2500k sandy at 4.5ghz and ssd with its 5ghz WiFi n wireless card. This is the quickest rendering tablet I've ever used.
As an aside, the complete re image to stock 4.2.2 from Google might fix reboot problems as well. It seems to do wonders for people with battery and other issues on early n4s. My screen on mine is new but the hardware is from launch day.
Sent from my Nexus 4 using xda premium

Well...
Well, I haven't tried that, but I have heard that many people said the update can help save battery.

i just got the update i was barley able to hit 3 hours screen time lets see how this one lasts.

sotorious said:
i just got the update i was barley able to hit 3 hours screen time lets see how this one lasts.
Click to expand...
Click to collapse
Three hours T h a T Is horrible
Sent from my HTC Ruby using xda app-developers app

My battery life is significantly worse after the update. I flashed back to stock 4.2.2. It seems that the problem with mine is my tablet isn't sleeping. Android os is the highest battery user. Maps is taking a lot too. I have Google now and location services turned on so I'll try disabling those again... No rebooting though
Sent from my Nexus 10 using Tapatalk 2

filthygoat223996 said:
if you are rooted change your processor speed to 1.5gHz, it really helped me get better battery life
so far at 6 hours of youtube with 50% left to go
Click to expand...
Click to collapse
do you mean reducing the maximum cpu clock to 1.5 ghz?