Tips To Increase Battery Performance - AT&T Samsung Galaxy S II Skyrocket SGH-I727

Anyone want to share any tips for getting more out of your battery?
I can get through a day with moderate use which is what I really care about but want to try and get a little more out of it.
I cycled the battery 3 or 4 times when I first got the phone.
I keep it on auto-brightness with a 30 sec timeout.

juice defender
i use an app called Juice Defender to squeeze more out of the battery on my phone. Just upgrade to the skyrocket so i dont know how much it improves things on there but on my old Infuse i managed to get 2 days of moderate use out of a full charge.

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[Q] Need help regarding battery issue Samsung GT i5801 galaxy 3

I have been using samsung galaxy 3 for last 3 weeks. As a newbie as a android user I am really confused about battery back up I am getting. I am generally getting 1-1.5 days back up, with moderate use of, 5-10 shorter phone calls, 3-4 hours of surfing, GPS always off, background data/auto sync off and switching it on only I connect to APN. More over I feel that I am not getting the proper battery indicator reading also. It shows battery is almost over and shuts off, and when I switching it on it shows 30% is still remaining. This is utterly confusing. I dont know anything about rooting phones and all. So anyone there to help this layman?? Please. Thanx in advance.
satyamsit said:
I have been using samsung galaxy 3 for last 3 weeks. As a newbie as a android user I am really confused about battery back up I am getting. I am generally getting 1-1.5 days back up, with moderate use of, 5-10 shorter phone calls, 3-4 hours of surfing, GPS always off, background data/auto sync off and switching it on only I connect to APN. More over I feel that I am not getting the proper battery indicator reading also. It shows battery is almost over and shuts off, and when I switching it on it shows 30% is still remaining. This is utterly confusing. I dont know anything about rooting phones and all. So anyone there to help this layman?? Please. Thanx in advance.
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the battery of our phone lasts that much only even mine lasted for 1.5 days
lot of reviews say that our battery lasts only 2days with normal use
yea... battery lasts for a day or 2 only.. android uses much power.. so its normal..
battery LIFE!!
Yeah battery lasts 1.5 days for heavy usage..
you can boost performance by installing juice defender like apps from market.
also by underclocking and undervolt you can save some power.
for battery calibration follow this, it helped me to boost my battery life as it eliminates the so called memory effect.
http://forum.xda-developers.com/show....php?t=1024867
hope this helped u buddy .

Battery stats for those on custom ROMs

Im trying to convince myself to get the Inspire and sell my atrix.
The last thing that is making me reluctant is the battery. I consitantly get between 30 and 40 hours between charges on my atrix with 3 to 4 hours of screen time. I know i wont get that with an Inspire, but im wondering what kind of stats people are seeing who are running custom ROMs. With my capitvate i saw a nearly DOUBLE battery life effect between stock and a custom rom. im hoping there are similar results on the inspire.
for those on custom roms, im looking to see how many hours you get between charges. ideally, how many hours between charges, with how many hours of screen time, wifi, blue tooth, etc. and im also interested in seeing the battery life of those who are OC/UV.
Someones gotta have info for me!
Sent from my MB860 using XDA Premium App
Inspire battery usage....sucks!
If your main concern is BATTERY USAGE, then DO NOT get an Inspire.
No matter what ROM or other MODS made to an Ispire, it is accepted by all that have one, that the Inspire has very low battery uptime, especially when compared to other platforms.
Stay with your ATRIX for long battery usage and uptime. - Glenn
I just swapped my Atrix for the Inspire this past Sunday, and i can tell you first hand you're not gonna get the same battery results you did with the Atrix. Personally, I don't need to get 20-40 hours of battery life from a phone. Don't get me wrong, it is nice, but I don't need it. I just want to get at least 8 hours (while I'm at work) from a battery and I'm fine. However, I do have my charger with me just in case and i also have a car charger.
I rooted my Inspire Sunday night and flashed the stock rooted rom and couldn't be happier. I got about 13 hours out of the battery yesterday while I was at work and I used it under normal circumstances..calling, texts and lots of fb checking etc. Oh, and I didn't have any overclocking, underclocking, themes or nothing...just the rooted the stock rom.
The inspire is a lot more smooth also when compared to the Atrix. I was all for the Atrix last week. But after actually having the Inspire....its the Inspire FTW!
Its not my main concern. Just the Las thing I'm considering. A lot if other things about the inspire are appealing. Just looking for round about numbers.
Can I get 12 hours out of itwith 2 to 3 hours of screen time? That might be enough for me........If can get more than that, then I would def be sold.
Of course all this would be expected only when all aetttings on phone for Max bat life applied
Sent from my MB860 using XDA Premium App
muthabusser said:
If your main concern is BATTERY USAGE, then DO NOT get an Inspire.
No matter what ROM or other MODS made to an Ispire, it is accepted by all that have one, that the Inspire has very low battery uptime, especially when compared to other platforms.
Stay with your ATRIX for long battery usage and uptime. - Glenn
Click to expand...
Click to collapse
Speak for yourself. My Inspire lasts me the day with a ton of juice left over. I'm not a super heavy user, but I will have sometimes 60-70% battery life when I go to bed on light use days. On heavier use days I'm still at 30-40% when I go to bed. Unless you are watching youtube videos or something for hours on end, battery life is fine I think.
To extend battery life I adjusted my screen brightness back to 30% with no auto adjust, seemed to help battery life quite a bit and did not make much difference in how the screen looked. Today I am trying auto brightness, but using power saver to switch to lower screen brightness when the battery hits 40%--I'm at 7 hours and the battery is still at 70%. Honestly, I don't think a person could even watch a movie on a flight, for example, the screen draw on the battery is that bad. If I keep the phone, I will have to get another battery.
I get 22-24 hours with light average use, about 14 hours of moderate use. CM7, nothing special done or flashed.
HTC Inspire Clockwork Recovery * CM7(kang) * Eng S-Off
synnyster said:
Speak for yourself. My Inspire lasts me the day with a ton of juice left over. I'm not a super heavy user, but I will have sometimes 60-70% battery life when I go to bed on light use days. On heavier use days I'm still at 30-40% when I go to bed. Unless you are watching youtube videos or something for hours on end, battery life is fine I think.
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Click to collapse
I was replying to the OP's original statment regarding his Atrix battery time in reference to the Insire's battery time:
OP said......The last thing that is making me reluctant is the battery. I consitantly get between 30 and 40 hours between charges on my atrix with 3 to 4 hours of screen time.
Even with your light usage, I am doubtful that you get anywhere close to the OP's "30 and 40 hours between charges on my atrix with 3 to 4 hours of screen time". - Glenn
well i guess i will just find out.
impulse buyer here. immediatly ran out and purchased an inspire after making this thread.
You're going to LOVE the inspire (even with the lower battery time). I have no doubt you will be throwing rocks at ATRIX users in no time!! - Glenn
Lol ur right so far. Smooth, fast, solid. Just the smoothness and screen size is enough to win me over
Sent from my Desire HD using XDA Premium App
My results are based on percentage of time versus overall time, based on an average 8h work day.
Stock rom:
at the end of 8h I had an average of 55% left
Revolution HD 4 Beta 2:
at the end of 8h I had an average of 35% left
Stock rom rooted and bloat removed, HSPDA enabled:
only have one data point and it looks good so far. I had 75% left with the same average use as the other roms above. Why this one is so much better I don't know.
Also the stock rom came with the stock Radio 06.04.06_M but with the root downgrade and then custom rom to Rev HD4 B2 I had to upgrade the Radio to one that was suggested, which is 06.03.24_M2.
Also, one thing that I noted which was also seen on my Nexus One is that when I use the GPS my car charger is not able to keep up and I will loose battery % as I drive.
All in all I am very happy with this move from the Captivate. Many see it as a lateral move, but if you ever where in the need for the GPS this is definatey an upgrade since the GPS on the Inspire is spot on.
^^^^^^
thats the kind of info i was looking for. appreciate it.
my first run with the inspire resulted in 14 hours since last charge (down to 15%) with nearly 3 hours of screen on time.
granted i adjusted every possible thing to be less battery consuming, and one hour of that screen time was laying in bed in the dark with the screen on the lowest brightness setting.
i think i may be able to work with this.
oFUNGUSo said:
well i guess i will just find out.
impulse buyer here. immediatly ran out and purchased an inspire after making this thread.
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yeah i am close to an impulse buy on the inspire too, just because its such a great price. even full price at 399 is insanely cheap when most phones are 550 full price.
RogerPodacter said:
yeah i am close to an impulse buy on the inspire too, just because its such a great price. even full price at 399 is insanely cheap when most phones are 550 full price.
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Click to collapse
the battery does suck. but everything else on the phone is so great, that i still am happy i got it
I am a pretty hardcore user and I never have any issues with battery at all. I believe a lot of these battery issues that people have are due to flashing with a low battery, which causes the battery's "memory" to get messed up. If people flashed with a full battery, or did the battery reset procedure after flashing and charging, we would stop hearing about all the horrible battery issues. User error, not an issue with the phone. If it was a phone issue, I would absolutely be experiencing the problem as well.
There are also bigger, better, higher capacity batteries up to 3500 ma/h if you REALLY need more battery time.
Sent from my Desire HD using XDA App
alright so i had a lot of issues with getting great battery life out of the phone. i'm only writing this to help people that are having similar issues. obvious, relative to teh atrix (with a ridiculously larger battery), the life is NOT that great. BUT i've gotten 24+ hours on teh phone with certain tweaks.
first off, rooting is a pain in the ass, but a necessity for any power user. My HSUPA speeds are often higher then the HSDPA speeds...and I can tether too! Anyways most important part of tihs is underclocking. I have my screen set to underclock to 3xx Mhz with screen off. I can't even tell the difference between when it is underclocked or not. I don't OC since for whatever reason I don't see the option to and don't care to force it.
I also set my brightness to 20% or less when i'm indoors, which is usually where i am. I also turn off the radios when i'm not using them, or wifi when i'm in range (i think its better than hspa), and sometimes autosync too (there are widgets for this). i also disabled facebook live feed syncing and set it to update when i open the app, and to sync contacts and htc sync and other useless stuff to once a day.
if you want something to turn off your radios when your screen is off, check otu juice defender. if you want to track your battery over time, try juice plotter. with the way i ahve it setup now, if i leave the screen off for 10 minutes. the battery drops 1% or less PER HOUR. One night, it finished charging at midnight so i took it off, and didn't put it back on a charger 1 am the next night with 10-15% left.
anyways, i hope this helps at least some new inspire owners. good luck with rooting if you haven't yet, it took me 4 hours, but itw as COMPLETELY worth it
anosis said:
My results are based on percentage of time versus overall time, based on an average 8h work day.
Stock rom:
at the end of 8h I had an average of 55% left
Revolution HD 4 Beta 2:
at the end of 8h I had an average of 35% left
Stock rom rooted and bloat removed, HSPDA enabled:
only have one data point and it looks good so far. I had 75% left with the same average use as the other roms above. Why this one is so much better I don't know.
Also the stock rom came with the stock Radio 06.04.06_M but with the root downgrade and then custom rom to Rev HD4 B2 I had to upgrade the Radio to one that was suggested, which is 06.03.24_M2.
Also, one thing that I noted which was also seen on my Nexus One is that when I use the GPS my car charger is not able to keep up and I will loose battery % as I drive.
All in all I am very happy with this move from the Captivate. Many see it as a lateral move, but if you ever where in the need for the GPS this is definatey an upgrade since the GPS on the Inspire is spot on.
Click to expand...
Click to collapse
Got another data point for the stock rom.
This time after the 8h my battery was at 55%, however I spend considerable time in a clean room were I have no signal at all. My other phones would usually drain much quicker in there and I believe it's because it's seeking a cell signal all the time.
So far I am very happy with the rooted stock rom, only wished it had some of the Gingerbread features.
I have consistently gotten about 9 hours usage, with 1.5 - 2 hours screen time, and left work with 40 - 60% battery. I make no effort to reduce usage, as nothing even comes close to the screens usage, except I do leave off gps when not in use. This is a general average, and I have noticed little difference between stock and 2 different versions of Android revolution, with different flashed radios. (roms always flashed at full battery) and overclocked to 1.2 with ondemand set. Overall I can say this battery is not great, but the rest of the phone is well worth it. I had the atrix for 2 weeks, and although the atrix got better benchmark scores, it was way less smooth, and a lot of market apps don't work on it, like flashlights, live wallpapers that don't support the screen, etc.
I am very glad my atrix's touchscreen failed, because if it didn't, I probably would have never tried the inspire, and I am much happier with the inspire.
Sent from my Desire HD using XDA App

Juice defender=placebo effect?

So ever since I first bought the G2x, I've always had juice defender a part of it. Now having done a factory reset, since May (when I got the phone) and not installing juice defender, it seems that I get the same if not better battery life without juice defender installed. Could juice defender just be adding to the battery drainage also?
Yea, I am in the same camp. Juice Defender really has done nothing way too much tweaking it. I have to say its like all of the purge from memory apps...you mileage might vary, but for me they aren't really helpful.
It seems to me that juice defender might be good for over-night, or for situations when I'm not going to be checking my phone for hours. Otherwise, the radio keeps getting turned on and off...on and off...everytime I wake the screen to text or something...that's in addition, of course, to the regularly scheduled times that it does it on its own.
But then again, instead of having it running all the time, I could probably get the same effect if I just went to airplane mode overnight.
Interesting point, OP...and gave me something to think about.
I'm gonna test that today, yesterday I got 15 hours with it on and set CPU profiles today ill turn off juice defender ultimate, ill keep u guys updated.
Sent from my LG-P999 using XDA App
jacob808 said:
So ever since I first bought the G2x, I've always had juice defender a part of it. Now having done a factory reset, since May (when I got the phone) and not installing juice defender, it seems that I get the same if not better battery life without juice defender installed. Could juice defender just be adding to the battery drainage also?
Click to expand...
Click to collapse
Yeah, I tested this week. Ifound no noticeable impact of juice except maybe overnight. During the day, and no impact, and perhaps even a negative impact.
I just manually toggle data off at night anyway.
There is really no reason to ever use juice defender when Tasker exists. It can do everything JD does and SO much more.
After testing pretty much every setting I could think of, the only things that made a significant difference is disabling data and GPS. I set up a screen off = data off, screen on = data on set and battery life WAS improved. However, I use Google Voice for all my texting, so I had to have some data, so I tried the same thing but reducing to just 2g and no improvement was noticed.
Keeping GPS off permanently but allowing it to run specifically on applications that need it helps too. Note that this is not possible on gingerbread except for CM7 and ROMs built off of CM's source. I imagine toggling bluetooth and/or WiFi would influence things too, but I never use either. No other setting resulted in a significant improvement in battery life.
Note that during all of these tests, I kept screen brightness to 18%, toggling to 25% when in direct sunlight and 0% in the dark. As for airplane mode at night; I plug the phone in at night and unplug when I wake up so this is a nonissue for me but AM is the best you will ever see your battery life without using things that require root.
And, of course, underclocking to minimum when screen is off improves more than everything else combined. Kernels and clock speeds matter far more than things like GPS or data connection.
Well I'm through testing today I got 11hrs and 18 min without juice defender compared to 15hr with it yesterday, and I used my phone less today, so juice defender gave me about 4 more hours, tomorrow I'm gonna use juice defender and 2g.
Sent from my LG-P999 using XDA App
I don't use any battery management apps, I do use android assistant to close apps every once in a while
Yesterday with juicedefender set CPU profiles and 2g I got 20hrs battery life.
Sent from my LG-P999 using XDA App
Oddly enough, the free version seemed to work better that the paid version. A lot of the time wifi and 4G will stay on even when not using the phone, and I have to manually turn off/on wifi depending on the situation. As stated, it does help when not using your phone for a while, but I'm no pro at it or anything, could be the settings.

Battery saver apps

I really need a better battery life for my business phone. My last 3 androids have all had a 20% battery by 3pm....
All of the battery apps claim to turn off network when screen goes blank and so on... however I still have bars of service imidiately after turning screen on. Will I still receive phone calls?
Root your phone, under clock when screen off and manually turn off your interwebz...
Rooted MT3G XM-8 Even Moar Stripped with XDA Premium..
FB is one of the bad culprits. I generally use Autokiller on strict to tweak the Android process things and it works good.
Did you try Juice defender? It's the only one I've tried and works fine so far. My battery last 30% longer after using it, and it wasn't tweaked.
If you don't want the hassle of underclocking, then just go for apps like Green Power and Juice Defender. Set it to turn on every 15 minutes during the day and totally off during the night when you sleep; you'll be surprised how much time you can squeeze out of your battery.
You must use battery saver pro or juice defender and task killer
Okay, task killing apps randomly won't always improve your battery life, for an example, if you kill let's say a play on tv app which is a system app, you might end up wasting more battery as it re-starts.
Juice Defender
I can personally vouche for Juice Defender Ultimate. I love this app, it's always the first I install when I get a new phone. It's saved me at least 3 hours of battery per day. I have the extended battery upgrade on my HTC Rezound, and I used to be at around 30-40% after a day at school (somewhat heavy 4G use, like listening to Grooveshark, browsing the web frequently, etc). Now, with the same, if not more usage, I'm at close to 60% by the end of the day, and it lasts me usually until around 9 at night.
So, Juice Defender=awesomeness. And you're going to want the Ultimate version for extra settings, definitely worth it.
I personally found that Easy Battery Saver which is free on the market gives me the best battery life even better than JuiceDefender which I found hard to believe till I saw the results. My Motorola Atrix has really bad battery life usually only lasts me about 5 hours without the app but with the app it lasts up to 8 or so which is a pretty swell improvement if I say so myself.
I would also say that Juice Defender is a good app... saves quite alot of battery.
but all of the apps using data in the background (facebook etc.) are the battery life drainers
Use juice defender
I use Juice Defender myself. works fine. you can edit what you want on or off. Also memory killer works but you need root
stevenjf88 said:
I really need a better battery life for my business phone. My last 3 androids have all had a 20% battery by 3pm....
All of the battery apps claim to turn off network when screen goes blank and so on... however I still have bars of service imidiately after turning screen on. Will I still receive phone calls?
Click to expand...
Click to collapse
Thank you see you
stevenjf88 said:
All of the battery apps claim to turn off network when screen goes blank and so on... however I still have bars of service imidiately after turning screen on. Will I still receive phone calls?
Click to expand...
Click to collapse
I can second the votes for JuiceDefender - it's done wonders for me.
For the rest of your questions...
Even when an app is toggling your data connection for you it won't affect your cellular connection. You'll still see bars of service (though without a data indicator next to it like "3G" or "H").
You will also still receive phone calls and text messages as (again) your network service remains untouched. Emails or other data services will be delayed until the app enables data.
Try out Bataria. I really notice a difference using it.
Chief_runningwater said:
My Motorola Atrix has really bad battery life usually only lasts me about 5 hours without the app but with the app it lasts up to 8 or so which is a pretty swell improvement if I say so myself.
Click to expand...
Click to collapse
That's weird, I got about 1 day of battery life with my Atrix, sometimes 2 when I disable data from time to time.
Which rom do you use ?
Anyway I also use JuiceDefender.
dark_kaizer said:
Use juice defender
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Click to collapse
thx dude..
Tasker + greenpower
Sent from my Samsung Galaxy S II using Tapatalk
it depends what version of android it has with 2.2 or higher i read that they manage memory pretty well so the task killers might actually take more battery rather than save it. If your Phone 4G you will save alot of battery by turning it to 3g and only turning on 4g when you need the speed
dpmpv said:
it depends what version of android it has with 2.2 or higher i read that they manage memory pretty well so the task killers might actually take more battery rather than save it. If your Phone 4G you will save alot of battery by turning it to 3g and only turning on 4g when you need the speed
Click to expand...
Click to collapse
Task killers are never necessary on Android. Apps to manage and toggle data and radios are far more useful - and can be quite beneficial to your battery life.

Battery Life before and after root?

I'm wondering if anyone has made a chart to test this. I normally go through a battery and a half to 2 batteries in a work day. Currently completely stock with Juice Defender ultimate and Lookout running in the background. After my 8 hr shift im usually having to change my battery (sometimes before). I know rooting is suppose to help with this, but does it really help with so much on screen time? Funny thing is most my battery drain is a mix between, XDA, Facebook, and Reddit. Usually non work days i can get a full days use out of a singal battery.
Rooting doesn't change your battery performance... It's what you do WITH root access that helps that.
There are plenty of things you can do without root access to better your battery life though. I personally get 24+ hours and I'm on the stock rom that came with the phone. Make sure your data connection is off when you're not using it, set your wifi sleep policy to turn off when the screen is off (settings>wireless/network>wifi settings>menu button>advanced>wifi sleep policy), and set your brightness low. Honestly about all it takes to get great life out of your phone.

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