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I read through quite a few of the battery issue threads but would still appreciate specifc advice on the issue I am having with mine.
I already couple times did the stats wipe as per the tweak guide on OT site but do not seem to have any benefit from doing it.
I am encountering the following issues:
Charging
Charging is very finiky. If i am charging in operation or while turned of the tab will seem to stop charging at certain levels of charge between 70% and 95%. If it happens while charging turned off I need to disconnect and reconnect in order to coninue charging, sometimes a few times.
If it happens when in operation similar will happen but also when the charge is reported at 100% I tun off the tab only to find out that the charge level reported by the off battery icon is not 100%. On different occasions it displlayed anywhere from 80 to 95% (estimated). Dont remember ever seeing it at 100%.
Discharging
If I turn on flight mode overnight I will get almost no discharge all night 0%-1% which seems very cool but my normal use is really wireless thethering. I just started not even 10 minutes ago from 100% charge and already at down to 90%. Just playing a game or browsing or reading the forum using the XDA app can completely discharge the battery in less than 2-3 hours. All of this in spite of the fact that I am on Jupiter, UC and UV heavily. I also manualy been stopping running services like skype and yahoo messenger.
I am afraid this could be a a battery hardware issue but would appreciate a confirmation or a suggestion of what else I can try before restocking and going to the service center to get the battery replaced.
Maybe you could advise which system apps I can freeze with Titanium and still be able to maintain wireless tethering and phone functions. Maybe an advice on a task killer and what I can and can't kill to keep the mentioned functionality.
While writing this post I lost 8% charge!!!
Dont get any task killers they kill system process then the system has restart them which kill battery. Have you tried wiping batterystat.bin when below 10% and charging to 100% while powered off.
Sent from my GT-P1000 using XDA Premium App
Or try backing up data and restocking and installing the WIPE version of
Jupiter or of kratos.
Sent from my GT-P1000 using XDA Premium App
aliaksei said:
Or try backing up data and restocking and installing the WIPE version of
Jupiter or of kratos.
Sent from my GT-P1000 using XDA Premium App
Click to expand...
Click to collapse
thanks mate, I always restock and do the wipe version. currently on Jupiter and will soon be moving over to Kratos. Reading good stuff about it.
aliaksei said:
Dont get any task killers they kill system process then the system has restart them which kill battery. Have you tried wiping batterystat.bin when below 10% and charging to 100% while powered off.
Sent from my GT-P1000 using XDA Premium App
Click to expand...
Click to collapse
The only way I would install a task killer would be if I could get someone to tell me which tasks to ignore so I wouldnt get this issue. No have not tried the below 10% wipe but will do so since you mentioned it. In the Kratos thread somebody mentioned to let it completely discharge and then without connecting to boot into CWM and let it further discharge. Aparently a system full discharge is not a full discharge and there is another couple hours juice left in the battery to keep the CWM going. Would this be a good idea?
Thanks to the helpers and to all you readers I think I found the issue. It seems to be a hardware problem but not with the Tab. The problem was with the charger.
I accidentally came across a car charger, bought it, used it to partially top up a couple times in the car and right away the Tab seemed a bit different. So I went back and bought a mains charger plugged it in last night and for the first time in quite a while it charged to 100% and it happened within expected time. Put it on charge at 1.30am and it was at 100% at 5.30am when I woke up.
Dont think it will effect the drain much but it is definitely giving me more juice to start with.
Oops!
Sent from my GT-P1000 using XDA Premium App
After running Kratos for quite a while with my new chargers and recalibrating by the book I am getting the expected level of battery juice. The tab charges efficiently to100% every time.
Drain is still an issue for me though. If i set airplane mode overnight (8hours) it will loose 1% charge but 9%-10% without airplane mode. On standby and in use the drain is consistant and fast. Not even UC and agressive UV helps.
I did a lot of app freezing and it realy doesn't make a major difference. Normaly I have only 4 services running. Settings, Google Services, AnySoftKeyboard and Google Maps.
I don't think I had the same drain on Hermes even though i didnt UC, UV and had at least a dozen services running. Think my battery life was better while others were complaining about wifi reconnection issues. ASAP I will try going back to Hermes to either confirm the issue with Jupiter/Kratos or to just accept this as normal and shut up.
Sent from my GT-P1000 (Overcome, Kratos) using XDA App
I finaly narrowed down the battery issue.
When on wi-fi i will get up to 3 days of battery life but only up to 16 hours on 3G.
It has been suggested to change the modem. I am curently on JPZ. My GT-P1000 was originaly purchased in Saudi and currently, until my next contract who knows where in the world, using it in Croatia.
A suggestion on the most battery efficient modem that works globaly would be appreciated.
Sent off the Blue Marble using GT-P1000 on Kratos via XDA App
MutantWizard said:
I finaly narrowed down the battery issue.
When on wi-fi i will get up to 3 days of battery life but only up to 16 hours on 3G.
It has been suggested to change the modem. I am curently on JPZ. My GT-P1000 was originaly purchased in Saudi and currently, until my next contract who knows where in the world, using it in Croatia.
A suggestion on the most battery efficient modem that works globaly would be appreciated.
Sent off the Blue Marble using GT-P1000 on Kratos via XDA App
Click to expand...
Click to collapse
FYI - Kratos Overcome ROM has(or had, there's a new one out today and it might fix this?) a bug with wifi where that if you leave the network and then reenter it without manually turning off then on the wifi, it will constantly reconnect(or something) and burn battery like mad.
For now I just flip the wifi off/on again when i connect to a new wifi since i didn't want to leave Overcome. Hopefully the new one fixes it.
---------- Post added at 07:05 AM ---------- Previous post was at 07:04 AM ----------
and by leave/reenter network, i mean physically walking outside the network range until it disconnects, not disconnect/reconnect through the tab settings.
It may only happen moving from one network to another (i go from home wifi to work wifi to home wifi each day).
Mate thanks for the reply but think you misunderstood. I dont have an issue with wifi. My issue is with 3G/mobile network over SIM card. That one burns the battery.
Sent off the Blue Marble using GT-P1000 on Kratos via XDA App
darkmattar said:
FYI - Kratos Overcome ROM has(or had, there's a new one out today and it might fix this?) a bug with wifi where that if you leave the network and then reenter it without manually turning off then on the wifi, it will constantly reconnect(or something) and burn battery like mad.
For now I just flip the wifi off/on again when i connect to a new wifi since i didn't want to leave Overcome. Hopefully the new one fixes it.
---------- Post added at 07:05 AM ---------- Previous post was at 07:04 AM ----------
and by leave/reenter network, i mean physically walking outside the network range until it disconnects, not disconnect/reconnect through the tab settings.
It may only happen moving from one network to another (i go from home wifi to work wifi to home wifi each day).
Click to expand...
Click to collapse
So to understand what you are saying explicitly.
At home I connect to WIFI -- XXZ.. Its already a remembered network. I drive away from home and come to office here WIFI is YYZ (Already remembered network). So it automatically connects. THIS CAUSES the batt drain????
If yes, I am extremely happy. Coz I dont turn off WIFI it connects at home n office automatically. Please corroborate!
Al
> I finaly narrowed down the battery issue. When on wi-fi i will get up to 3 days of battery life but only up to 16 hours on 3G.
I think that is normal standard consumption. 3G is known battery hog and you cannot compare its runtime vs. wifi. Is 3G on all the time, or maybe you attempted to use interval disconnectors (ie. battery saver apps) like JuiceDefender, Green Power, the likes?
Thanks jtdc!
I move around the world a lot and rarely set up wifi so most of the time I am full time on 3G. I dont use any power saving tools like you mentioned. Insted I use Titanium to freeze any apps that unnecessarily show up in running services.
I only noticed the differwnce with wifi due to an exteded visit with a relative who has wifi in his house. It wont be long and I will again be full time on 3G and would realy like to extend the battery life by minimum 4 hours. Are you aware if there is a known difference in power consumption between different modems or if any of the tools you mentioned can deliver this kind of savings purely by managing the 3G operation?
Sent off the Blue Marble using GT-P1000 on Overcome 7, v4 via XDA App
if any difference of modems that would be minimal to negligible. what always comes as the factor is the strength of signal and of course the tab which always scans for it whenever you're on the move. what you experience is typical, and in best case good because 16 hours on 3G always on? your battery and tab must have been setup really well.
if you can bear with interval disconnector apps like i mentioned, it would increase your runtime. for instance you can have the app connect every 15 minutes to 3G then be online for at least a minute to have all your internet dependent apps sync (email, messages, news, etc) and have traffic threshold detection in case in a minute some transfer still ongoing, then maybe 2 minutes is long enough. then for the next 15 mins 3G is off, then it will repeat the cycle. in that manner there's quite a lot of power to be saved and will definitely extend your runtime.
if really no other choice, i suppose you need to buy an external battery solution, the likes of energizer xpal, so you won't have to worry about battery life.
Great, thanks, that solution is acceptable for apps that require data services. Can you recomend an app to use for setting it up.
I expect it would prevent me from using inbound calls via Skype but how would using such an app impact incoming sms service and voce calls? Would they come through and would voice call quality be impacted.
Sent off the Blue Marble using GT-P1000 on Overcome 7 v4 via XDA App
"Green Power" in android market does the job and its free, that takes care of data connections (wifi or 3G) and will not tinker with the GSM radio, therefore sms and voice calls are untouched. The other app "Juice Defender" you can customize even to turn off the GSM radio, even downlclock the cpu, etc. which will result more savings but is a paid app.
Let us know how that helped to increase your runtime
Just wondering regarding data connections.
What setting is likely to give the best overall battery life. WiFi set to never sleep or WiFi set to sleep when screen is off
I'm not sure what would use more power. WiFi or 3G
waynefox said:
Just wondering regarding data connections.
What setting is likely to give the best overall battery life. WiFi set to never sleep or WiFi set to sleep when screen is off
I'm not sure what would use more power. WiFi or 3G
Click to expand...
Click to collapse
Calibrating battery(free in market) is the best for you battery, full charge til mv=4182(or higher if you get it), then use the phone til it`s completely empty and shots it self off. Then your up to go. You can use Hp power packs as well with hp kernel.
SuperSkill
I've gone back to using HP SR2 and battery life is great. But wifi and Bluetooth doesn't work properly with this kernel
Sent from my LG-P990 using XDA App
I am using hp sr2 and its working good wifi and blth. I am on stock v20l. And for me network data drains battrery faster than wifi
Sent from my LG-P990 using XDA App
Recently, I switched from Oat's Light n' Tasty to CM9 nightlies (currently on 20121202) which I flashed with CWM. I have noticed that the battery drains significantly faster with CM9 when the device is asleep. Looking at better battery stats I found that ath6kl_wow seems to be the culprit, which was reinforced with GSam which reported that 89% of the battery was consumed by wifi. Any ideas of what may be the problem or how to resolve the battery drain?
Thanks.
Have you gone into the advanced WiFi settings and set it to sleep when the screen is off?
Additionally you could try increasing the WiFi scan interval in the build.prop
Sent from my SAMSUNG-SGH-T989 using xda premium
-SGA- said:
Have you gone into the advanced WiFi settings and set it to sleep when the screen is off?
Additionally you could try increasing the WiFi scan interval in the build.prop
Sent from my SAMSUNG-SGH-T989 using xda premium
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Click to collapse
I want to be able to get notifications from the device, so ideally i wouldn't want the wifi off when the screen is off. I haven't edited the wifi scan interval yet, any recommendations on a time i should enter into build.prop?
You could try 180, but if you are always connected it won't make a difference.
Sent from my cm_tenderloin using xda premium
I thought I might make a few comments since I have been trying various configurations to maximise the usefulness and battery life of my i9305t.
After trying just about every radio/modem, every rom, every kernel and every mod, I've come up with a configuration that is working really well for me.
I would like to invite others to comment on their config too, and talk about their battery life. This way a good comparison can be made.
So to get things started, I'm currently using (and have found this the best for my purposes):
Carrier: Telstra in Australia
The Galaxy Project v.9.00 XXBMG3
Baseband VDBME1
Kernel Version: 3.0.31-1153417 (comes with Galaxy Project v 9.00)
JKay 14.95
Jellybean Domination v17.0
All network and bluetooth options on
Battery Saving mode on
Screen Brightness - auto
According to Better Battery Stats (with a reasonably new battery) I am getting between 3% and 5% drain per hour - which is substantially better than any other config I've used.
I hope this is useful.
I do not use special settings .. only rXTREME v13 + adam kernel with zzmoove governor:
Battery Life 19/23 hours
6/7 hours airplane mode
wi fi always on
power saving on
data connection always on
automatic brightness
gps off
autosync always on
My Galaxy SIII LTE is unrooted, mobile data on 4G.
Wifi ON whenever possible, switching actively OFF when traveling.
Wifi automatically OFF at night
Mobile data ON, only when Wifi is OFF (actively switching it off)
Power saving OFF
Battery saving mode OFF
Screen Brightness AUTO
Syncing always ON
GPS, Bluetooth OFF
Battery consumption per hour:
at night (Wifi and Data OFF): between 0.25% and 0.35% (!!!)
at night (Wifi OFF, data ON): between 1,00% and 1.75%
daytime (Wifi and Data alternating): between 2.00% and 3.50%
daytime (Wifi and Data ON): between 2.50% and 5.50%
So the only real way to make the battery last longer is apparently to actively toggle between Wifi and Mobile Data. I know that the consensus is that as long as Wifi is on having Mobile Data also ON does not drain the battery, but the results above show differently.
nickjhart said:
I thought I might make a few comments since I have been trying various configurations to maximise the usefulness and battery life of my i9305t.
After trying just about every radio/modem, every rom, every kernel and every mod, I've come up with a configuration that is working really well for me.
I would like to invite others to comment on their config too, and talk about their battery life. This way a good comparison can be made.
So to get things started, I'm currently using (and have found this the best for my purposes):
Carrier: Telstra in Australia
The Galaxy Project v.9.00 XXBMG3
Baseband VDBME1
Kernel Version: 3.0.31-1153417 (comes with Galaxy Project v 9.00)
JKay 14.95
Jellybean Domination v17.0
All network and bluetooth options on
Battery Saving mode on
Screen Brightness - auto
According to Better Battery Stats (with a reasonably new battery) I am getting between 3% and 5% drain per hour - which is substantially better than any other config I've used.
I hope this is useful.
Click to expand...
Click to collapse
Well, I just disabled all Google bloat (Google+,Now etc) and getting great battery life. They are also a big data drainer as well.
Sent from my GT-I9305 using XDA Premium 4 mobile app
aspot72 said:
Well, I just disabled all Google bloat (Google+,Now etc) and getting great battery life. They are also a big data drainer as well.
Sent from my GT-I9305 using XDA Premium 4 mobile app
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Click to collapse
Wow - I just did this too, and it made quite a difference. Thanks for the suggestion.
nickjhart said:
Wow - I just did this too, and it made quite a difference. Thanks for the suggestion.
Click to expand...
Click to collapse
Glad to help. Did you missed the Thanks button ?
I have enormous battery drain when wifi is ON, also when the screen is off and the phone is in deep sleep. I lose about 6% of battery without touching the phone. Tried different combinations of roms and kernels but nothing changed, how's it possible?
hermes669 said:
I have enormous battery drain when wifi is ON, also when the screen is off and the phone is in deep sleep. I lose about 6% of battery without touching the phone. Tried different combinations of roms and kernels but nothing changed, how's it possible?
Click to expand...
Click to collapse
You have to check for the apps which are using wifi while it's on. Some apps, like Facebook, whatsapp, hangout, and many others stay on the background searching for Internet connection.. Another problem could be related to synchronization, do you turn it off when it isn't necessary?
Sent from my LG-P880 - Beanstalk 4.4.2 - Iodak 9.95 kernel - using xda app-developers app
Also, check in wifi - advanced - wifi scanning always available. And make sure it's off (on KitKat roms)
Sent from my Nexus 5 using Tapatalk
Maybe the fact that you actually played with the kernels so much, determined it to drain so fast. Go back to the stock kernel and you'll see the difference .
Sent from my LG-P880 using Tapatalk
I already tried all different kernel and roms combinations (stock, iodak ect.), synchroniz is disactivated. I also tried to unistall whatsapp and all messagging app and ibernated apps using wifi with greenefy. wifi scanning is ever OFF . At this point I don't know what I do, I tried everything
Try an app like Networklog to pinpoint the apps using your WiFi
Sent from my Nexus 7 using xda app-developers app
hermes669 said:
I already tried all different kernel and roms combinations (stock, iodak ect.), synchroniz is disactivated. I also tried to unistall whatsapp and all messagging app and ibernated apps using wifi with greenefy. wifi scanning is ever OFF . At this point I don't know what I do, I tried everything
Click to expand...
Click to collapse
Try this: uninstall trickster, or the different app you're using to set kernel values, then reboot the phone (it will boot with default kernel settings).. After that, reinstall trickster, then set your custom values..make sure you're using cubic as tcp congestion algorithm, (Westwood assures smoother data transfer, but it drains battery faster, especially while you're using mobile data, in my opinion..)
Sent from my LG-P880 using xda app-developers app
If you are on stock rom then DONT set "keep wifi during sleep - never,when screen is off,set it to alwayse since sometimes this command get stuck and will reproduce know wifi delay on sleep wakelock.
Sent from my LG-P880 using Tapatalk
I do have exactly the same problem. Using CM stable 10.1.2 with default CM kernel.
Deep sleep is fine when Wifi is on (no wlan_rx_wake issues) but nevertheless it is draining like 7-8% per hour when Wifi is on...
hermes669 said:
I already tried all different kernel and roms combinations (stock, iodak ect.), synchroniz is disactivated. I also tried to unistall whatsapp and all messagging app and ibernated apps using wifi with greenefy. wifi scanning is ever OFF . At this point I don't know what I do, I tried everything
Click to expand...
Click to collapse
Hey,
just like u i have the same troubles, the battery drain was the main reason to root and start with custom rome.
For sure some rom gave me better battery but finally i figure out that wifi has bigger battery consumption than 3G alone.
So i use wifi for big downloads or if theres no data network.
In normal use (music, internet, mail...) i never reach one day without charge d the phone.
ATM, am under the latest beanstalk ROM, wich is quite good, with wifi off last night, i've lost only 2% battery
U can also try this app: https://play.google.com/store/apps/details?id=com.ijinshan.kbatterydoctor_en&hl=fr
It was working quit good under 4.3 rome like slimbean or vanir i haven't tried under kikat based ones
Hope it helps
itnetwork said:
I do have exactly the same problem. Using CM stable 10.1.2 with default CM kernel.
Deep sleep is fine when Wifi is on (no wlan_rx_wake issues) but nevertheless it is draining like 7-8% per hour when Wifi is on...
Click to expand...
Click to collapse
Try CM nightlies, I'm currently using CM11 with it's kernel and no problem, wifi on all time with 1 Gmail and 2 exchanges.
I have already tried CM11 nightlies. But GPS is not working for me. It simply does not fix.