[Q] GPS and battery life - T-Mobile LG G2x

How much does leaving GPS on affect battery life?
Is it possible that with gps on, and all apps set to try to use gps for location information as the default...that it will poll the 4g radio less, and perhaps offset some of the drain?

I drove for 1 hour and battery went from 100% to 75%.
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KRAZYADROIDMASTER said:
I drove for 1 hour and battery went from 100% to 75%.
Sent from my LG-P999 using XDA Premium App
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Well with that you also have to factor in that he screen is on, the brightness levels, the app that is using the CPU, and that if you are using setcpu, your default profile will be used since the screen is on. I think OP is talking about just leaving GPS on but not using it directly with Google Maps for example.

mmapcpro said:
How much does leaving GPS on affect battery life?
Is it possible that with gps on, and all apps set to try to use gps for location information as the default...that it will poll the 4g radio less, and perhaps offset some of the drain?
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I'm on stock, so it might not be what you're looking for, but I always leave my GPS on and I get decent battery life, averaging 19hr and sometimes reach 24 hrs before having to charge my phone. I also use Tasker for several GPS location tasks for when I am in certain areas to provide shopping lists, reminders, etc., that periodically check my location, so I don't think leaving it on matters much. It's only used when needed.

The impact GPS has on battery is pretty close to negligible. No more than an hour per day probably.
If at the end of the day your battery is near critical then you shouldn't leave it on all the time, but if you don't use it too heavily then it won't be a problem.

I recorded my path using MyTrack for about 4 hours and my battery went from ~90% to ~10.

legoman666 said:
I recorded my path using MyTrack for about 4 hours and my battery went from ~90% to ~10.
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There's a difference between leaving GPS on but not using it constantly and actually running an app that quires the GPS nonstop. In your case, you probably prevented the phone from sleeping, and that will murder your battery no matter what.

Related

Any suggestions about my battery life

I know that there are lots of these battery life threads and i have read most of them and I've tried closing processes that i don't need and i have tried setcpu to keep the cpu low when the device is off, which seemed to help some but my phone would shutoff randomly. So last night i had a full battery and went to bed when i woke up 8 hrs later i was at 20% so about 10% an hr not even using the device. I have attached some pics for reference does anyone have any thoughts that might help. Thanks
I don't know about galaxy S but on my X10 the problem was wifi.
When I didn't have a data plan I had wifi on all day and the battery was down in 10h max 12h.
To improve it I had to use JuiceDefender to enable wifi every five minutes for updates..
Try to disable wifi overnight, reboot the phone and see what happens.
By the way, what app you used for those stats?
Sent from my X10a using XDA App
tuxStyle said:
I don't know about galaxy S but on my X10 the problem was wifi.
When I didn't have a data plan I had wifi on all day and the battery was down in 10h max 12h.
To improve it I had to use JuiceDefender to enable wifi every five minutes for updates..
Try to disable wifi overnight, reboot the phone and see what happens.
By the way, what app you used for those stats?
Sent from my X10a using XDA App
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I don't have wifi enabled, I don't use it that often. the name of the prog is system panel
Very weird indeed. I have my Captivate with Wifi on all day, GPS signal and auto sync and when I go to bed and wake up, the battery hasnt gone down at all. I had the phone go on full battery one day and I even sent a few texts and went online for 10 minutes before it lost just a bit of battery.
Do you have that one LED app installed? The one that shows a little red dot on the corner of your screen when you have a notification?
hacker01 said:
Do you have that one LED app installed? The one that shows a little red dot on the corner of your screen when you have a notification?
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yes i do.. Why? but it was turned off last night, as its turned off every night
Ok so i tested again last night and I did not have my im+ app running and the battery life was soooo much better. I also did not have system panel running which records all the battery and cpu stats but i'm think its the im+ app that was taking up all the juice. Can anyone think of another app that does skype and facebook but that also does not take up sooo much batter life??? Thanks
88EVGAFTW said:
Very weird indeed. I have my Captivate with Wifi on all day, GPS signal and auto sync and when I go to bed and wake up, the battery hasnt gone down at all. I had the phone go on full battery one day and I even sent a few texts and went online for 10 minutes before it lost just a bit of battery.
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Possible he has his set to stay on. While yours may turn off when sleeping.
Sent from my SAMSUNG-SGH-I897 using XDA App
Open up the dialer and type in *#*#4636#*#*
Go to BATTERY HISTORY>PARTIAL WAKE USAGE and maybe that will show you which app is sucking up your battery life while you sleep.
Also try, if you don't absolutely need an internet connection while you sleep, SMODA widget to turn off your mobile internet. It's quick, free, and painless.
m_1000rr6 said:
Open up the dialer and type in *#*#4636#*#*
Go to BATTERY HISTORY>PARTIAL WAKE USAGE and maybe that will show you which app is sucking up your battery life while you sleep.
Also try, if you don't absolutely need an internet connection while you sleep, SMODA widget to turn off your mobile internet. It's quick, free, and painless.
Click to expand...
Click to collapse
yeah the app that took the most juice was im+
I drained mine down to 5% and charged full a few times and still only got 8 - 10 hours on mine until i flashed to jh2 and now have been getting almost 16 hours with same usage and apps installed. I charge mine at night. I use ebuddy with the piwer saver option turbed on abd it does an ok job.
Sent from my SAMSUNG-SGH-I897 using XDA App
I have the stock ROM and stock launcher and my battery is awsome! 8 hours and I will still be above 80%.
Brightness: Lowest (manually control via stock stock gesture)
GPS: OFF
Wifi: ON all day
BT: OFF
GMail manual
Other emails accounts hourly for the most part.
Widgets: Google/Fancy Weather
BG: Mostly Black
I have never seen such good battery life on a smart phone.
I could easily get 2 days, but i rather charge every night and then not worry about battery usage.
The wifi/gmail/gps made a big difference, its too bad you can't set gmail to hourly or something lik e that. Some of my email accounts i would like to set longer than hourly.
The last few days have been pretty good one my phone. Used to get maybe 16 hours but my last charge lasted me about 50 hours with moderate browsing, gaming, and voice/text. Juiceplotter is telling me I'll be getting about 47 hours
Sent from my SAMSUNG-SGH-I897 using XDA App
tysj said:
The last few days have been pretty good one my phone. Used to get maybe 16 hours but my last charge lasted me about 50 hours with moderate browsing, gaming, and voice/text. Juiceplotter is telling me I'll be getting about 47 hours
Sent from my SAMSUNG-SGH-I897 using XDA App
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How many hours with the display on?
Sent from my phone so I apologize for any spelling mistakes
My battery icon depletes one notch when I'm using the screen for about an hour. Some people recommend cycling the battery, in which you do a full drain and immediate full charge, 3 or 4 times. I've done it, but it's hard to say if it explains my good battery life.
let the battery drain COMPLETELY until the phone turns off a couple times, then charge it till 100% without unplugging it.
Berserk87 said:
let the battery drain COMPLETELY until the phone turns off a couple times, then charge it till 100% without unplugging it.
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You don't want to drain the battery that much, those kind of batteries can be damaged. The phone turns off for a reason.
I haven't done the cycle thing and its fine. A lot of that comes from older batteries with the memory problem.
irus, software which is based on data connection drains the battery one way or another. Some apps now support push notifications and IM+ does too. Did you try to use push?
These claims of multiple day charges with moderate use is crazy to me. I have the newest ROM, a black screen, display all the way down, gps off, wifi on when in range, make zero voice calls, run juice, and only have 2 widgets that update every 4 hours. I use my phone for a maximum of 3 hours browsing the web, reading XDA and feedR, checking facebook and the occasional text message. My phone lasts a total of 12 to 14 hours. My battery has a manufacture date of late July. Is there some secret I am not aware of?
Sent from my SAMSUNG-SGH-I897 using XDA App
I'm I'm your boat Shuggins, except I don't use juice, I have it installed though
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Terrible battery life, please help!

Hello I am new to this forum, I just got the Samsung galaxy s 4g this Wednesday and I was wondering if anyone else was having battery issues. Right now I have my phone set to minimum brightness, auto sync off, black bckground and juice defender on. So I don't understand why am I getting only about 3 hours of battery life when all I'm doing most of the time is surfing the web(this forum) and facebook. I even get better battery life from my dads vibrant which is completely stock, has auto sync on, no juice defender, and screen brightness set to 50%. From reading the stats of both phones, the vibrant 4g is supposed to have a slightly better battery. I also don't understand why if the screen is at the minimum it still takes up 94% of the battery whereas on my dads vibrant 50% screen brightness takes up 30%. Is there anything I can do? Will wiping the battery stats help? If so how do I do that from a stock unrooted vibrant?
Sent from my SGH-T959V using XDA App
Check your notifications settings. I know that Samsung's contacts integration with social networks takes a big toll on the battery, hence why I've disabled it. Also, disable T-Mobile's Contact Backup Sync, just use Google's contacts integration.
Thanks for helping, but yeah I have those disabled already.
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icy56 said:
Thanks for helping, but yeah I have those disabled already.
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No, I charged mine this morning at 630AM, and I have been playing with it all day. It is currently 610PM, and I am at 60% still. Seems pretty good to me.
troby1986 said:
No, I charged mine this morning at 630AM, and I have been playing with it all day. It is currently 610PM, and I am at 60% still. Seems pretty good to me.
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Wow thats much better than what I have been getting, have you changed any settings that might have increased the battery life for your phone?
Sent from my SGH-T959V using XDA App
Does the trick to fully discharge and recharge 3 times work with these batteries? According the the Li-on technology this is not supposed to be necessary but I've heard stories in the forums of folks getting great battery life on other phones after doing this. Many people also say their batteries work a lot better after a week of use (supposedly after "training" them as well.)
I believe the G2 is clocked down for this reason. You could try CPU-set app, clocking down to 500-800mhz when not gaming.
Anyone tried these tricks?
gggirlgeek said:
Does the trick to fully discharge and recharge 3 times work with these batteries? According the the Li-on technology this is not supposed to be necessary but I've heard stories in the forums of folks getting great battery life on other phones after doing this. Many people also say their batteries work a lot better after a week of use (supposedly after "training" them as well.)
I believe the G2 is clocked down for this reason. You could try CPU-set app, clocking down to 500-800mhz when not gaming.
Anyone tried these tricks?
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Click to collapse
Will ill try to cycle charge the vibrant and use it for a week, and ill try out cpu set. if this doesn't improve I'm definitely returning this phone. I had soo much expectation for this because I have seen people getting up to 24 hours. I can't even get halfway through the day barely using the phone.
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Thats weird... I unplugged at 9:30 used it moderately untill 12:30 at which time i turned brightness to max and watched the intire incpetion movie and watched an episode of kitchen nightmares and ended up at 56%.
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mavictb said:
Thats weird... I unplugged at 9:30 used it moderately untill 12:30 at which time i turned brightness to max and watched the intire incpetion movie and watched an episode of kitchen nightmares and ended up at 56%.
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Yeah there's gotta be something wrong with my phone, after watching halfway through inception from a full charge and at 0% brightness I had 30% battery left.
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I'm also struggling to make it through the day. I check Facebook / xda on occasion and text moderately, Gps off, notifications and auto sync off, display set to 0% with an all black background, even 3g off in areas where its spotty... I don't remember the vibrant being this bad...
Sent from my SGH-T959V using XDA App
did you guys do a full battery break in? I charged my phone to 100% drained it till it died charged it to 100% again with the power off then drained till it died again... I have great battery life.
What is your usage like? Im breaking in my battery again today.
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rando191 said:
What is your usage like? Im breaking in my battery again today.
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Auto brightness on GPS on sync on 20 texts 30 min playing games 20 min on Facebook now on xda app for 15 min. And standby for 3 hours... currently at 80%. Also have hepatic feedback on the Mtm gingergread keyboard. If that matters.
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I got my replacement 4g today. Hopefully ill have better results. I have a question for those of you that are getting really good battery life, are you running juice defender or something similar in the background? Maybe that's a factor in why I've been getting terrible battery.
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Im having the same issue with battery life.. for me its a deal breaker.. I use my phone pretty heavily for keeping up with email and a little web browsing as well as talking quite a bit.. My iPhone 3Gs lasted me all day of heavy use and with the SGS4G I have to charge the damn thing at least once a day with light usage and if I have to be on the phone a lot then its twice a day.. Not acceptable at all...
Thats with wifi and gps disabled..
On the 3Gs I had wifi, bluetooth and the gps running all the damn time...
Took my phone off charge at 6:30 this morning haven't put it on charge yet at 88% never had this much juice with the nexus one.
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I'm not having any issues with battery life or heating. I use wifi teather most of the day and I'm getting to use it all day without issue. I did cycle my battery 4 times already just in case it matters. FYI
The batteries that our phone uses DOES NOT require u to cycle the battery. In fact, doing so will harm your battery. To avoid damage to your battery always charge ur phone when u r at <15% battery level. Trust me I thought the same until I did the research. I will post more info when I get on my PC later.
Sent from my SGH-T959V using XDA App
**EDIT**
More information:
http://www.goodandevo.net/2010/06/does-the-htc-evo-4g-battery-need-to-be-primedconditioned.html
http://batteryuniversity.com/parttwo-36.htm
I just bought a Galaxy S 4G on wednesday. First android device coming from iphone 3G. I'm still trying to figure out the best way to preserve the battery life.
I took it off the charger at 6:30am and the battery was at about 2% at 8:30pm.
I haven't rooted the phone yet to remove some of the bloatware that comes pre-installed.
I've got email accounts synching, brightness set at about 10% w/ a static wallpaper. Played about an hour of angrybirds throughout the day and didn't really do any web browsing with a few phones calls. I mean 14 hours is decent but from what I've read there are plenty of people getting a full day of use and still have 50% battery left.
I guess once the battery fully charges I'll put inception on, turn off syncing and try a few other things.
So I guess I said all that to say this, my battery life isn't great but it's not downright horrible either. Any suggestions would be much appreciated.
And yes I'll continue browsing all the forums to see what else I can find.
Edit:
Played through half of Inception in airplane mode, brightness at minimum. I dropped from 93% to 80% in an hour and a half. Not too shabby.
Also created a shortcut to toggle between 4G modes and Edge. I know 4G is going to be a pretty big drain so I'll see how much that helps.
I'll keep tweaking it.
this is completely true and if you read the manual on page 13- h t t p:// downloadcenter . samsung . com/content/UM/201102/20110224044646930/T959_Galaxy_S_4G_English_User_Manual.pdf it says that
"• Do not wait until your battery is completely depleted before charging
your device. Repeating this process of a complete discharge and
recharge can over time reduce the storage capacity of any battery."
right now my phone is at 23% battery level with up time of 46:46:40 hrs/mins/secs. with skype calling (around 10 minutes), text messaging, browsing the net (for around 5 minutes about 6 times a day), and talking on the phone (around 15 minutes)
the settings i did:
1. took a picture with my finger blocking the camera to get pitch black picture and set that as my background and deleted all the shortcut icons (i short, i only have a blank screen with the only 4 icons down below)
2. changed the brightness settings to 2 clicks to the right from 0% brightness (or you can lower your brightness all the way down during the night, and 2 clicks away during the day, this will save you more)
3. disabled haptic feedbacks and audible touchtones, selections, and screen lock sounds
4. disabled animations
5. disabled background data and syncing when not in use
6. disabled packet data (3g), wifi, and gps when not in use
the last two are the biggest settings that made my battery last longer.
7. i only charge my phone when it gets to 20% and the manual recommends not to use the phone while charging
i hope this helps.
and yes it is recommended to charge your battery to 100% before you turn on your phone for the first time and this is also stated on the manual.
one more thing, don't forget to set your browser's brightness setting as well
Toshinobu said:
The batteries that our phone uses DOES NOT require u to cycle the battery. In fact, doing so will harm your battery. To avoid damage to your battery always charge ur phone when u r at <15% battery level. Trust me I thought the same until I did the research. I will post more info when I get on my PC later.
Sent from my SGH-T959V using XDA App
**EDIT**
More information:
http://www.goodandevo.net/2010/06/does-the-htc-evo-4g-battery-need-to-be-primedconditioned.html
http://batteryuniversity.com/parttwo-36.htm
Click to expand...
Click to collapse

[Q] Juice Defender helps in battery life?

I am going to try JuiceDefender to see if I can get 14-16 hours of battery life.
I normally have 2-2 1/2 hours talktime daily and normal web browsing with Email/FB/Twitter
Has anyone used or has experience with this app?
Thanks
Just dl'ed it also. Only been using it a few days but I see a small improvement.
Sent from my Desire HD using XDA App
I've used it before and found it made me lose battery faster.
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Clienterror said:
I've used it before and found it made me lose battery faster.
Sent from my Desire HD using Tapatalk
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Click to collapse
Could you elaborate?
I find the settings quite promising.
Wifi/Data control based on location/time/apps looks good. Don't know how they will help.
Yesterday I got through a full day with 10% left at 10pm.
Lets see if it stays that way
metaldood said:
Could you elaborate?
I find the settings quite promising.
Wifi/Data control based on location/time/apps looks good. Don't know how they will help.
Yesterday I got through a full day with 10% left at 10pm.
Lets see if it stays that way
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Well when I used it on my captivate it seemed it used quite a bit of power, more than it seemed to save by managing WiFi/3g. One found "green power" to be better as it is a lot less CPU intensive. Just my .02
Sent from my Desire HD using Tapatalk
I've been using JD on and off for a few days... It seemed to save some battery at first, but now it seems to be sucking it down. I left my Inspire on overnight and battery had drained by 50%! I also don't like how it handles wifi, always turns it off when I need it.
Been using Screebl (aggressive screen timeouts, but stays on depending on angle of phone) and Llama (location control for off/on wifi, gps, volume of ring and notifications) for a week now. Start with a full charge overnight, typical work day stats, on battery starting at 6:00 AM:
10-20 texts
8 hours wifi on (web, fb, twit, pandora, not all at once, just throughout the time wifi is on)
70 minutes talk time
background data on for syncing two google accounts, push
background data on for weather on stock clock widget 6 hour refresh
background data off for EVERYTHING else (manual refreshes on twit, fb, etc.)
end of day status: 8:00 PM 10% battery
this was best day out five, worst was 8 hours and the phone cried foul with 15% warning. I think there was more game playing that day. Otherwise very happy with the results so far.
read this.
I run AR 2.1 with juice defender oc 1.2ghz and get around 20 hours average on one charge. Turn off auto brightness and run it at about 20% also

When is battery drain significant enough to be considered defective

Since I had the phone, battery drain has been ridiculous. Around ten to fifteen percent per hour. After recently switching to humble 1.5 my drain is nearly 30% an hour. I will try to recalibrate soon but should I consider getting another battery? I was listening to mp3s and checking email during that hour and about ten minute of gps. But the drain still feels a bit excessive. What do you think?
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What kind of signal do you have? Under battery use, is there anything that's been using a disproportionate amount of battery? What do you keep on as far as services and connections, like GPS, 4G, etc?
My signal is usually fine with 4g a majority of the day. It was struggling a bit today in the underground and I had to turn off and on the data to get a solid connection a few times. I usually keep on the data and gps or bluetooth on depending on the situation. Usually just a combination of those. Data is the only one on all day. Nothing looks unusual under the battery usage except for the display using 82%, but it was like that on stick as well.
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What was your brightness set to?
Sent from my gingerbread gummycharged gbe 1.9rc2.3 charge.....bro.
Automatic.
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braveally said:
My signal is usually fine with 4g a majority of the day. It was struggling a bit today in the underground and I had to turn off and on the data to get a solid connection a few times. I usually keep on the data and gps or bluetooth on depending on the situation. Usually just a combination of those. Data is the only one on all day. Nothing looks unusual under the battery usage except for the display using 82%, but it was like that on stick as well.
Sent from my SCH-I510 using XDA Premium App
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Click to collapse
Well, 4G and GPS together can use power pretty aggressively. Granted, 30% an hour seems excessive and may be caused by something else.
A couple things you could try - force 3G (you can do this manually or via a downloadable widget I believe) instead of 4G and use location services instead of GPS (unless you just need GPS). I know these aren't as "attractive", but can provide similar services with less power consumption. This will at least let you see how much consumption is due to these more power intensive services.
If you still have issues, you may have a battery problem (or may need to try reflashing a ROM, stock or otherwise).
charlie_c said:
Well, 4G and GPS together can use power pretty aggressively. Granted, 30% an hour seems excessive and may be caused by something else.
A couple things you could try - force 3G (you can do this manually or via a downloadable widget I believe) instead of 4G and use location services instead of GPS (unless you just need GPS). I know these aren't as "attractive", but can provide similar services with less power consumption. This will at least let you see how much consumption is due to these more power intensive services.
If you still have issues, you may have a battery problem (or may need to try reflashing a ROM, stock or otherwise).
Click to expand...
Click to collapse
Yeah, that's a tough swallow just for the sake of battery. I can compromise on the location service, but really want 4g since it is so widely available for me. I will attempt to recalibrate the battery and then possibly reflash if I feel it's still a problem. Is there another rom you recommend that can possibly mitigate this issue. I tried Gummycharged on my phone but it is really buggy (launcher force closes every few minutes) on my device for some reason.
braveally said:
Yeah, that's a tough swallow just for the sake of battery. I can compromise on the location service, but really want 4g since it is so widely available for me. I will attempt to recalibrate the battery and then possibly reflash if I feel it's still a problem. Is there another rom you recommend that can possibly mitigate this issue. I tried Gummycharged on my phone but it is really buggy (launcher force closes every few minutes) on my device for some reason.
Click to expand...
Click to collapse
Depends on if you want a Froyo or a Gingerbread ROM. I was running the Eclipse Froyo ROM with the imoseyon kernel overclocked and undervolted slightly and had excellent stability, performance, and battery life. I just switched to a GummyCharged GBE 1.9RC2.3 but haven't really decided yet if I'll stay.
Probably Froyo
charlie_c said:
Depends on if you want a Froyo or a Gingerbread ROM. I was running the Eclipse Froyo ROM with the imoseyon kernel overclocked and undervolted slightly and had excellent stability, performance, and battery life. I just switched to a GummyCharged GBE 1.9RC2.3 but haven't really decided yet if I'll stay.
Click to expand...
Click to collapse
Thought about it for a while and will be sticking with Froyo for now until Gingerbread has been officially released from Verizon. I'm hoping that will allow for most of the bugs to be reconciled. I read in various post that GB still has some issues. Stability, performance and battery life are my primary concerns.
On a side note:
Don't quite know if I am ready to start overclocking and changing voltages. Is there a recommended thread to get some basic knowledge on working with the voltages and what not. I only have experience overclocking desktops and graphics cards.
Thanks for following through with me on this as well.
braveally said:
Thought about it for a while and will be sticking with Froyo for now until Gingerbread has been officially released from Verizon. I'm hoping that will allow for most of the bugs to be reconciled. I read in various post that GB still has some issues. Stability, performance and battery life are my primary concerns.
Click to expand...
Click to collapse
I was right there with you, but I read that these Gingerbread leaks also allowed you to use Media Hub with HDMI out (which it does), and my credit was about to expire
braveally said:
On a side note:
Don't quite know if I am ready to start overclocking and changing voltages. Is there a recommended thread to get some basic knowledge on working with the voltages and what not. I only have experience overclocking desktops and graphics cards.
Thanks for following through with me on this as well.
Click to expand...
Click to collapse
No problem, I used the clock and voltage settings in this post but only used the Temperature profile. Had no issues. I tried straying from it but started getting crashes so I went back to it. If you're looking for only battery improvements, you could skip the 1300 Mhz OC and just underclock and undervolt. That whole thread is devoted to an OC kernel though so feel free to read through and it may shed more light on it.
Hope that helps.
Awesome. Thanks
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Automatic brightness will use more battery than setting it to one brightness and manually adjusting it as needed. Automatic brightness requires activating and polling the light sensor, then increasing/decreasing the brightness. On top of that, I've found that automatic tends to keep the screen brighter than it needs to be for me in most situations.
Good point
imnuts said:
Automatic brightness will use more battery than setting it to one brightness and manually adjusting it as needed. Automatic brightness requires activating and polling the light sensor, then increasing/decreasing the brightness. On top of that, I've found that automatic tends to keep the screen brighter than it needs to be for me in most situations.
Click to expand...
Click to collapse
I think your right. I had a similar issue with auto screen brightness with my old Touch Pro 2. I will try this among the things written earlier to see if it has any impact.
5% drain in last twenty minutes. Just Lte on and no activity but writing this post.
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20% drain per hour of screen on time is the norm for Charge. Throw in the typical idle background drain of 4% per hour, and you'll see why 3 hours of screen on time per day is the max you can get.
Now then, the drain due to active screen use is expected and can't be improved. However the idle drain is unusual and *probably* can be fixed by future Samsung firmware. (gingerbread is not fixing it yet). I'm guessing its poor idle radio management, which is why undervolting the core does nothing to help.
If the idle drain can be greatly improved, the Charge could then expect to get 4-5 hours of screen on time per day, and I'd be a happy camper.
braveally said:
5% drain in last twenty minutes. Just Lte on and no activity but writing this post.
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Click to collapse
I'm in the same boat here with Humble 1.51.
4G at 4 bars, -84dBm, surfing the net, 30% back light, no gps, no wifi, 2 gmails syncing -- 20%/hour.
Brightness is at the lowest setting for me, Twitter, Facebook, and Beautiful Widgets syncing hourly, 2 Gmail accounts with push notifications, Google Voice, and possibly a few more background apps. I'm at just over 4 hours being unplugged with 20 min. of screen on time and my battery is at 75% and was charged fully when I unplugged it. I have not had any major use as far as playing a game or major web surfing either.
I have good luck with imoseyon's lean kernel 0.13.3 and gummycharged fe. I had very poor battery life before i tried that combo.
Sent from my SCH-I510 using XDA App
Go back to Stock. Completely wipe everything (including SD Card ... this is optional probably, but it's what I did. Make sure you back up on your computer). Then re-flash your rom. I had this problem after switching initially from Froyo to GB. My battery life is amazing now with the new GC GBE 2.3.
Scrappy1 said:
20% drain per hour of screen on time is the norm for Charge. Throw in the typical idle background drain of 4% per hour, and you'll see why 3 hours of screen on time per day is the max you can get.
Now then, the drain due to active screen use is expected and can't be improved. However the idle drain is unusual and *probably* can be fixed by future Samsung firmware. (gingerbread is not fixing it yet). I'm guessing its poor idle radio management, which is why undervolting the core does nothing to help.
If the idle drain can be greatly improved, the Charge could then expect to get 4-5 hours of screen on time per day, and I'd be a happy camper.
Click to expand...
Click to collapse
I've seen you post this on other threads, and it just proves that different users of the Charge have different experiences. I think a lot of it has to do with the network.
I have had my phone off the charger for 10.5 hours now at home, which varies between a moderate and weak signal. It is still at 81%, which means it has had a 1.8% per hour battery drain. It has been mostly idle, but I've sent a few texts and quickly browsed a website. If it was truly left alone, it would be even less than 1.8% per hour. This clearly debunks your one-size-fits-all claim of 4% idle battery drain.
As for screen on time, I've done 2 hours of screen on time during an 8 hour day and still had ~48% left. Doing the math I could get ~3.85 hours of screen on time in a 15.3 hour day. My battery drains quite evenly with no sudden drops, so this would be a fairly accurate and realistic expectation for me. If I really needed to, I should be able to get ~4.55 hours of screen on time in an 8 hour day. This is based on my high of 1.8% per hour idle drain and 18.8% per hour screen drain. Or, if I did a 10 hour day (like I do quite often), I could do ~4.35 hours of screen on time. Once again, your sweeping generalization of 3 hour max screen on time certainly doesn't apply.
I don't have any special or magical configuration either. I leave 4G on, which sometimes drops to 3G at my house since the signal is weak at times. I leave the GPS and bluetooth on at all times. I have the screen brightness set on automatic. I also have Gmail setup with one push email account and leave auto/backround-sync on at all times.
I run Imnuts' PBJ voodoo kernel with a stock deodexed EE4 system and got rid of some of VZW's bloatware. Mind you, I haven't noticed any significant difference in battery life between the fully stock stock EE4 and the current configuration.

It's the best battery saver I have tried.

Hi all,
Just want to share a battery saver app which works really well on my charge. I used to have 10-12 hrs normal usage, now I have 20hrs with left over at the end of the day. The only feature that you have to look out for is "enable cpu saving", it may work for you, but for me this put my phone in so deep sleep that it never wake up. But of course just pull battery, reboot then disabled the feature. it made by a big Chinese internet security company and "melvinchng" is nice enough to translate it to English for us. All credits go to him. Hope you all like it. Cheers!
http://forum.xda-developers.com/showthread.php?t=1685816
Better than Antutu?
Sent from my SCH-I510 using xda app-developers app
cnoevl21 said:
Better than Antutu?
Sent from my SCH-I510 using xda app-developers app
Click to expand...
Click to collapse
For me it is, but the best bet is try it for yourself and let us know your opinion. You have nothing to lose.
Here is screen shots of mine. I will post a few more later.
If u want to save battery just turn off 4g under wireless and networks. My 3g only will last 1.5 days of moderate to lighter use.
Sent from my SCH-I510 using xda app-developers app
buhohitr said:
Here is screen shots of mine. I will post a few more later.
Click to expand...
Click to collapse
I may be missing something, but it looks like all it is doing is blocking mobile data periodically, right? mobile data is the biggest drainer on battery performance (in my experience). however, I don't want to have it off, even for a minute - as if I misplace my phone, I'll need mobile data to be on in order to find my phone via the Lookout app...
jco23 said:
I may be missing something, but it looks like all it is doing is blocking mobile data periodically, right? mobile data is the biggest drainer on battery performance (in my experience). however, I don't want to have it off, even for a minute - as if I misplace my phone, I'll need mobile data to be on in order to find my phone via the Lookout app...
Click to expand...
Click to collapse
It doesn't unless you instruct it to do so. If you toggle wifi/4g on only when needed then you should save even more. Did you see Vulkano? that video streaming over 4g. If I have wifi/4g on all the time, with my normal usage, I can have the phone unplugged at 8am to 10pm and still have about 30% left. Of course my normal usage maybe different from yours. If I have your phone in standby (screen off), I got 10hrs and the phone is at 91%.(about 1% per hrs). I suggest to find out if this app really help or not, just try it out, you have nothing to loose.
buhohitr said:
It doesn't unless you instruct it to do so. If you toggle wifi/4g on only when needed then you should save even more. Did you see Vulkano? that video streaming over 4g. If I have wifi/4g on all the time, with my normal usage, I can have the phone unplugged at 8am to 10pm and still have about 30% left. Of course my normal usage maybe different from yours. If I have your phone in standby (screen off), I got 10hrs and the phone is at 91%.(about 1% per hrs). I suggest to find out if this app really help or not, just try it out, you have nothing to loose.
Click to expand...
Click to collapse
thanks, I will.
I know that in standby mode with wifi on and 4G off, my battery drains about 1% per hour. with 4G on (no wifi connection), ~5% per hour.
once factoring in some moderate usage, that drops down quite significantly.
OK, as promissed, here are pictures after 11hrs. Noticed my screen time is more than 50%.
Looks good. But will need to see a comparison to without the app.
But I did download and install it. Will see how we do tomorrow.
tappin' that....
jco23 said:
Looks good. But will need to see a comparison to without the app.
But I did download and install it. Will see how we do tomorrow.
tappin' that....
Click to expand...
Click to collapse
Haha, seems like to need a lot of lucks!
buhohitr said:
OK, as promissed, here are pictures after 11hrs. Noticed my screen time is more than 50%.
Click to expand...
Click to collapse
Actually, you didn't include your screen on time at all. Your screen's percentage of battery use was over 50%, though. Including your actual screen on time would help when comparing battery usage.
well, this app was a major fail for me. after 4 hours, down to 61%. it blocks what I need (google syncs such as mail, calendar, photos, drive, music, etc). so if someone sends me an appointment, I will not receive it.
I don't have any problem with Juice defender. But I guess it isn't for everyone. I just use it so I don't have to worry about manually switching back and forth between 4g and wifi as I go around throughout the day.
I turned off 4g recently to try to improve my horrible battery life (just got 4g in my area too ). It wasn't a huge difference but what really changed it for me was to stop overclocking. I really don't see much lag anyways and it didn't help with the apps I wanted so fixes fine for me.
Tazer2death said:
I don't have any problem with Juice defender. But I guess it isn't for everyone. I just use it so I don't have to worry about manually switching back and forth between 4g and wifi as I go around throughout the day.
I turned off 4g recently to try to improve my horrible battery life (just got 4g in my area too ). It wasn't a huge difference but what really changed it for me was to stop overclocking. I really don't see much lag anyways and it didn't help with the apps I wanted so fixes fine for me.
Click to expand...
Click to collapse
regarding Wifi, I have found that editing the build.prop file to adjust the wifi interval scan helps dramatically. I changed my 1800 (once every 30 minutes). now I leave wifi and 4G on all the time with no significant battery drainage.
but I have found that these so-called battery saving apps just simply cut off mobile data or "auto-sync".
This app was a huge fail for me. Back to the antutu battery saver i go.
Sent from my SCH-I510 using xda app-developers app
cnoevl21 said:
This app was a huge fail for me. Back to the antutu battery saver i go.
Sent from my SCH-I510 using xda app-developers app
Click to expand...
Click to collapse
antutu was a fail for me too. so was "easy battery saver"
trying out juice defender again. I think I'm okay with mobile data turning on/off periodically. JD seems to do this nicely. I also like how JD turns on mobile data when the screen is unlocked.
however, I'm thinking that this could be done via a build.prop edit of some kind. essentially, what I would like to do is:
if WiFi is disconnected and screen is off/locked, turn on mobile data for 1 minute every 30 minutes, if WiFi is connected, turn off mobile data and keep wifi connection.

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