Develop Bugs

What Do You Consider 'Good' Battery Life?

NOTE: Fourth Option Should Read 16-24 Hours of LIGHT Use!
I see a lot of people constantly talking about battery life on here and how they are disappointed by what they are seeing from ROMs, kernels, or the OTA release.
I'm interested to see exactly what sort of expectations people have on the lifetime of their phone.
I've been fairly cognizant of my phone's power consumption and have done a lot to ensure I understand how I use it and what effect that has on its life between charges.
I understand that a first generation phone with the largest screen, the fastest processor available, the most processor intensive camera, with animated wallpapers, synchronization to various web services, flash, and borderline experimental next-generation wireless connectivity that can tether to multiple devices. To have all that on a unit marginally larger than my old Palm Pre and roughly the same battery size (1150mAh stock) is going to come with some compromises.
I tend to overclock, ROM flash, and beat the snot out of my phone on a regular basis. Therefore, I have a super gigantic Seidio battery that I absolutely adore. I found that even before that, I was able to get my battery life under control if I controlled my phone properly, so I'm not sure what the problem is.
Did some people just get bad phones? Are some people just being unrealistic with their expectations? What goals do you think people should be setting for the lifetime of their phone between charges?
Its an honest question.

I used to get almost a week out of an old motorola flip style phone (v500 something).
Everything since then has been downhill.

I'm not under the false impression that these new phones are going to last as long as the older "dumb" phones, BUT.....Id like to be able to get through the day without charging my phone. I keep my screen about 40% brightness, I'm usually in an area with good reception, I only sync my Gmail, I've calibrated my battery, etc. The only real USE my phone gets is texting. I unplug my phone at 5am and its more than half gone by noon. Not real great IMO.

I think this will provide valuable insight as to expectations for this phone. Personally I have used smartphones since I can remember and I was bread to expect a nightly charge.

It may be unacceptable to some that we have to "mod" our phones to get reasonable battery life, but I really dont have too many complaints. Out of the box, the EVO is running a 1gz processor and powering a 4.3" display. Not to mention if you're running wifi and various apps. I think some people are just expecting too much from these phones. Look at laptops. When my dell was brand new, I could get 2-3 hours of steady use before it conked out. The battery life our phones are getting, modded or stock, isnt really that bad. If you're unwilling to do some research and easy mods or buy a spare $20 OEM battery off eBay please dont complain about it.

spiicytuna said:
I think this will provide valuable insight as to expectations for this phone. Personally I have used smartphones since I can remember and I was bread to expect a nightly charge.
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A nightly charge is acceptable. It's when you have to charge 2-3 times a day from moderate usage that is a little out of hand... Understandable that with heavier usage, more frequent charges would be needed.

Wat kernel is best for saving battery life.. i use CM6 NB
Sent from my PC36100 using XDA App

Skeptron said:
Wat kernel is best for saving battery life.. i use CM6 NB
Sent from my PC36100 using XDA App
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Off Topic.

I want to power a small village from my phone please

I want my phone to last a day. And call a typical day something like:
- l/2-1 hour talk
- 12-24 text messages
- 45 minutes - 2 hours web browsing
- 2 hours music
My iPhone 3GS would do this without a problem, my wife's iPhone 4 might do 2 days like this. The EVO just barely does this.
But.. I prefer the EVO for enough reasons I just dropped $10 for 2 extra batteries and a phone-less charger on ebay, and keep chargers in the car and at my desk, and get it plugged in for like 30 minutes somewhere during the day. I rarely use the backup batteries, but it is nice to have them.
Totally worth it for a bigger screen, 4G, more open OS.

laydros said:
I want my phone to last a day. And call a typical day something like:
- l/2-1 hour talk
- 12-24 text messages
- 45 minutes - 2 hours web browsing
- 2 hours music
My iPhone 3GS would do this without a problem, my wife's iPhone 4 might do 2 days like this. The EVO just barely does this.
But.. I prefer the EVO for enough reasons I just dropped $10 for 2 extra batteries and a phone-less charger on ebay, and keep chargers in the car and at my desk, and get it plugged in for like 30 minutes somewhere during the day. I rarely use the backup batteries, but it is nice to have them.
Totally worth it for a bigger screen, 4G, more open OS.
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This definitely sounds doable. If you aren't getting that out of your phone, I'd reccomend calling support. I'm going to assume your dedication has already lead you down your own troubleshooting path.

My standard was set with my BlackBerry: less than 5% discharge rate per hour under normal use, and I am happy.
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Sent from my HTC EVO 4G using Tapatalk Pro.

Seido 3000mAh battery?

I'm wanting to get one, but I can't find ANY reviews online for it. Has anyone used it before?

Anyone at all?

3000mAh is scam.......should be good for about 2400 max

Had one for about 2 months now. I get about 24 hours of very heavy usage. Internet, numerous phone calls, texts, slingbox over 3G, and using power amp for hours on end will usually have me recharging after 24 hours. I could probably use it longer, but I hate to run my battery all the way down.

aaconteh said:
Had one for about 2 months now. I get about 24 hours of very heavy usage. Internet, numerous phone calls, texts, slingbox over 3G, and using power amp for hours on end will usually have me recharging after 24 hours. I could probably use it longer, but I hate to run my battery all the way down.
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That sounds like it's exactly what I need! =O
How much battery life do you get out of normal usage?

aaconteh said:
Had one for about 2 months now. I get about 24 hours of very heavy usage. Internet, numerous phone calls, texts, slingbox over 3G, and using power amp for hours on end will usually have me recharging after 24 hours. I could probably use it longer, but I hate to run my battery all the way down.
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Sounds about the same i get with 3g all day
Sent from my SGH-T959 using XDA App

I have been considering an extended battery myself, but it seems all the higher quality brands (Japanese cells) are over $50. Not sure if I can justify such an expense over just having another regular battery to swap on the go.
If anyone finds a good deal on the brand name one, drop us a link.

reggiedls said:
Sounds about the same i get with 3g all day
Sent from my SGH-T959 using XDA App
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I get about 40 to 48 hours with normal usage (few calls, data on, 3g on, push email, etc) I also have an ass of widgets on my homescreens that automatically update such as beautiful widgets, pure calendar, feedr, facebook, etc. Best phone accessory I have ever purchased.

aaconteh said:
I get about 40 to 48 hours with normal usage (few calls, data on, 3g on, push email, etc) I also have an ass of widgets on my homescreens that automatically update such as beautiful widgets, pure calendar, feedr, facebook, etc. Best phone accessory I have ever purchased.
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What rom are you on? Im on stock 2.2 and it seems i could get more out of the battery when i change the brightness settings to the lowest, but im working outdoors right now and need it all the way up. I noticed a huge difference in batt life coming from 2.1 with the same settings. Seems life froyo helped a bit
Sent from my SGH-T959 using XDA App

Is this one that sticks out the back of the phone and needs a custom back cover so none of the regular cases work and your phone is twice as thick as stock??

nakagusukumike said:
Is this one that sticks out the back of the phone and needs a custom back cover so none of the regular cases work and your phone is twice as thick as stock??
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Most extended batteries are like that.
Fortunately, most people who buy extended batteries don't care how it looks, don't buy custom cases to begin with, and don't care about thickness.
I need more battery life. Running Bionix 1.3 right now, and I'm constantly using my phone from about 6AM to 10PM every day with no time to charge it in between, and it's typically near the 5% mark by the end of the day, which I can't risk for too much longer.

Unless you are gaming just get an extra 1650 mah battery it is much more convenient. i had one but the weight and bulkiness was not worth to me. They do give a decent amount of use though.....

oka1 said:
Unless you are gaming just get an extra 1650 mah battery it is much more convenient. i had one but the weight and bulkiness was not worth to me. They do give a decent amount of use though.....
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My friend has one for his Vibrant, and it might look bulky, but good god it can live long, I moderately use mine and it dies, he's using his the ENTIRE day and he's still got 35% of his battery left at the end of the school day...

Longcat14 said:
My friend has one for his Vibrant, and it might look bulky, but good god it can live long, I moderately use mine and it dies, he's using his the ENTIRE day and he's still got 35% of his battery left at the end of the school day...
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Yeaaah, I use mine a lot and it tends to die by 10 now, which means I"m getting about 16 hours of battery life. By all accounts, that's a good number, but it's just flat out not enough.

accessory geeks 3000mah
ag 3000mah gives me about 80% left after a 2 1/2 hours phone call which is pretty darn good, wich the phone call was with the screen off the whole time.

Seidio 3500 mah extended battery.

I have a few pretty crazy results on this battery so far. I've had it for about a week. I did not condition it. And this battery will last 16 hours of very heavy usage. I mean like wifi, data, GPS, full brightness, YouTube videos, Netflix movie, and web browsing. Very heavy usage as you can see. This battery delivers you from your crap stock battery. I love the incestment I put into this, and I think it was the best $70 dollars I've ever spent. Final thoughts; great battery, every Evo user should get it.
Sent from my PC36100 using XDA App

I purchased one as well I get better hours over the weekend. During the week when I use it heavy I get about 7-9 hours
Sent from my PC36100 using XDA App

I bought 2 of the cheapy Ebay batteries about 6 months ago and never had much great life out of them. I decided to buy this one about 2 weeks ago and it really hasn't been that much difference.. I've conditioned it and done everything I can to make it last longer but it still drops almost 10 percent within the first 20 minutes just like the rest of em. Granted I'm running the 3.0 sense now and they do tend to use more battery but I honestly thought I would of seen better results.. I would probably spend the $25 to get the 2 batteries again vs. the $60 I spent for this one. But one phone is never the same as the next so you can't really take what anyone elses experience was to heart to much..

Well your kernel and rom combination can make the difference.
Sent from my PC36100 using XDA App

wher did you buy it?

Anyone who doesn't get tremendous time out of this is doing something wrong. I've had mine for months and run EVERYTHING on all of the time. 4G, wifi, GPS, bluetooth, 3G all day. I sit at my desk where i barely get 4g so I know that makes it go worse than normal and I get thru a day EASILY. Some days I can go almost 2 full days with everything on. If I turn off stuff I'm not using, I could easily get thru 2 or 3 full days.

I have it as well...it's amazing a the best investment besides a cls. 10 card I have made. Heard horror stories about knock offs. Seidio has their **** together

i bought the cheapie amazon 3500ma battery and its great, true it drops to 86% in the first 10 minutes but i think thats just cuz the software doesnt know its twice normal size. ive conditioned it when i got it.. i gotta say it was a great buy.. also made my white evo look like an oreo. i pretty much use my phone for texting n heavy gaming and it lasts ateast 12 hours.

luciferii said:
i bought the cheapie amazon 3500ma battery and its great, true it drops to 86% in the first 10 minutes but i think thats just cuz the software doesnt know its twice normal size. ive conditioned it when i got it.. i gotta say it was a great buy.. also made my white evo look like an oreo. i pretty much use my phone for texting n heavy gaming and it lasts ateast 12 hours.
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Unless u are on an SBC style kernel it will drop regardless. When I was on a stock kernel mine would drop to 93-95% then be solid.

im using stock cm7 kernel, whats a good kernel to use with that? im new to the evo and phones in general.

You could try savaged zen 2.2.1 cfs. Or tiamat 4.0.5. Really just depends on how ur phone handles it. Trial and error. Always wipe cache and dalvik before each kernel flash.

stkiswr said:
You could try savaged zen 2.2.1 cfs. Or tiamat 4.0.5. Really just depends on how ur phone handles it. Trial and error. Always wipe cache and dalvik before each kernel flash.
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ive ran android for about a year on my nook color.. just never a phone. thanks for tellin me the kernels.. i went with tiamat. i found that if you boot into cwm goto advanced and clear battery stats it shows the proper battery info.

do these batteries fit the ebay battery covers?

How do you maintain your battery?

I think this havent been discuss.. my question is: what do you guys do to keep your battery thru the whole day? I have seen people said that they keep their phone alive for at least a 1.5 or 2 days????
Sent from my Incredible using Tapatalk

1107963 said:
I think this havent been discuss.. my question is: what do you guys do to keep your battery thru the whole day? I have seen people said that they keep their phone alive for at least a 1.5 or 2 days????
Sent from my Incredible using Tapatalk
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There are several threads on this topic. Here is a current and popular one: How Do You Charge Your DInc?

Yeah but thats on charging it.. not wat u do to keep it.. like i read in another forum that some people disable gps and stuff like that... thats what i mean.. and thank you for ur post!!
Sent from my Incredible using Tapatalk

1107963 said:
Yeah but thats on charging it.. not wat u do to keep it.. like i read in another forum that some people disable gps and stuff like that... thats what i mean.. and thank you for ur post!!
Sent from my Incredible using Tapatalk
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No problem for the link. There are many ways to help save battery. I for one turn off GPS, Bluetooth, and mobile data when I'm not using them. I use AOSP Roms mostly because they give me better battery life, I use Incredikernel because it regulates how my battery works more efficiently, and I also have an extended battery. Wiping your battery stats every once in a while can help you prolong your battery life as well.
Sent from my ADR6300 using XDA App

optimized sense with the stock kernel will warrant some seriously nice battery life. thats how I maintain mine.

Depends on what I do, through a normal day (texting, few short calls, 30 minutes of music streaming, less than 5 minutes of GPS) it'll last ~1.5-2 days with CM7 nightlies and chad's incredikernel - underclocked 128MIN - ~800max
But if I use GPS all day, which I sometimes do- it'll drop 50% after 4-5 hours of use (this means screen-on, GPS running, also uses 3G data for maps) and I'll usually need to plug it in before the day ends.
I have a 1900mAh battery that fits in the stock case, so this isn't what I get on the stock 1300mAh battery.
If you can't last it through the day it usually means that you are a very heavy user (you like browsing the web all the time, streaming music, texting, watching videos) OR you have a setup that likes to eat your battery.

I need two of my 3 batteries to make it through one day. I use juice defender, and when I stream pandora at work I turn it off cause it interferes. I always have a charger handy too
Please lengthen your message to at least 10 charters

cvbcbcmv said:
people would like say how ugly my phone was in public.
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This made me me lol!

I actually didn't know that the 2150 was smaller than the 3500. That thing is a beast, my friend uses one and his phone is at least twice as thick as mine.

If you are rooted, you can update the radio, I've noticed much better performance out of the updates cause they seem to manage gps and wireless better. The radio update turn off wireless if you are out of range and turn off gps if no app is using it.

k_nivesout said:
I actually didn't know that the 2150 was smaller than the 3500. That thing is a beast, my friend uses one and his phone is at least twice as thick as mine.
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yeah but you have to take into account how slim the stock incredible is. Without any case and with only the stock battery it's too thin (for me at least). Hard to hold onto the sides and I accidentally press the volume buttons often. I've also dropped it 3 times with that setup.
With a case it's great and with the 2150 it was great, loved both setups but I'm liking the new style now with the 1900 and case so that's where I'm sticking at.

Does wiping the battery stats help the battery life? Or is it just so the phone better understands how much battery is left?

Stock battery has always worked best for me.. I also have the seido 1750 mah as well as some chinese versions of 1500 mah.. I use them as backups.. I'm currently using miui as my rom and the battery life is great... I usually get about 24hrs before i'm down to 20%. No way I would make the whole day on previous roms..

I take cues from battery university. Basically, don't let the battery go below 20% shallow charge /discharge
Sent from my Incredible

The kernel your running makes a huge difference in battery life. Been using Ziggy's BFS for quite some time now with the Seido 1750. Gets me though the whole day
HTC Incredible V1.0 amoled

[Q] Why are YOU obsessed with battery life on your SGS3?

Okay I have a question for the masses here. Why are YOU obsessed with battery life on your SGS3?
I've been through my fair share of cell phones with the latest 3 being the Galaxy S, SII and now the SIII. I've been through a long list of custom roms as well as time spent on stock roms and not once I have I installed a battery monitoring app like Juice Defender, nor have I been interested in undervolting or underclocking as I don't feel the extra battery life outweighs the instability of the phone and the time spend finding the exact perfect values to prevent reboots. As long as I have battery life to get my through the day (which I always have MORE than enough, I'm happy. I'm not a heavy user but my phone gets a workout during the day and I'm never far from a charger which is the awesome thing about having a USB connector to do the charging.
So I ask the question, what is the obsession with battery life? Are you trying to go green and get the most between charges as to not waste power recharging? Do you use your phone so much during the day that you can't make it through the school or work day without it going dead? Are you off the grid living in the bush and only get to charge when you are in town every couple days? Is it bragging rights you are looking for? Why did you spend big bucks to buy an extended battery? Why don't you use the phone the way it was intended to be used and turn off syncing apps just to save a bit of battery? Why do you turn screen brightness down to minimum and leave it there all the time when we have big beautiful screens that look so much better when they are correctly lit up for our surroundings?
I just find it interesting that every ROM thread and every kernel thread and a good portion of the threads in Q/A sections are littered with questions and discussions and arguments about battery life. How to get better battery life, why is my battery draining so fast on such and such rom, what is a good screen on time amount per charge. I don't understand nor can I find an interest in spending time to dissect and analyze everything just to squeeze an extra half hour of screen time out of my phone.
So why? Why are YOU so interested in the battery life of your phone. I'm not looking to make fun of anyone here. Just curious what the obsession is all about and why you are so interested. How does it make your phone or your life easier and better. Maybe I'm missing something.

Well for me, my battery life really sucked and didnt understand why so I started researching and i found out from stock you can do tweaks to improve it and so on and so on.
When I say my battery sucked on stock though it was really bad. I couldnt go a whole day. I would get about 10-15 hours of on time with less than a hour of screen time and my phone would be dead.
I dont care for going 2 days without a charge, I just wanted to go morning to night and still have some juice left. which i wasnt able to do before.

flexfulton said:
Okay I have a question for the masses here. Why are YOU obsessed with battery life on your SGS3?
I've been through my fair share of cell phones with the latest 3 being the Galaxy S, SII and now the SIII. I've been through a long list of custom roms as well as time spent on stock roms and not once I have I installed a battery monitoring app like Juice Defender, nor have I been interested in undervolting or underclocking as I don't feel the extra battery life outweighs the instability of the phone and the time spend finding the exact perfect values to prevent reboots. As long as I have battery life to get my through the day (which I always have MORE than enough, I'm happy. I'm not a heavy user but my phone gets a workout during the day and I'm never far from a charger which is the awesome thing about having a USB connector to do the charging.
So I ask the question, what is the obsession with battery life? Are you trying to go green and get the most between charges as to not waste power recharging? Do you use your phone so much during the day that you can't make it through the school or work day without it going dead? Are you off the grid living in the bush and only get to charge when you are in town every couple days? Is it bragging rights you are looking for? Why did you spend big bucks to buy an extended battery? Why don't you use the phone the way it was intended to be used and turn off syncing apps just to save a bit of battery? Why do you turn screen brightness down to minimum and leave it there all the time when we have big beautiful screens that look so much better when they are correctly lit up for our surroundings?
I just find it interesting that every ROM thread and every kernel thread and a good portion of the threads in Q/A sections are littered with questions and discussions and arguments about battery life. How to get better battery life, why is my battery draining so fast on such and such rom, what is a good screen on time amount per charge. I don't understand nor can I find an interest in spending time to dissect and analyze everything just to squeeze an extra half hour of screen time out of my phone.
So why? Why are YOU so interested in the battery life of your phone. I'm not looking to make fun of anyone here. Just curious what the obsession is all about and why you are so interested. How does it make your phone or your life easier and better. Maybe I'm missing something.
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Actually, battery life can have quite a few hours difference depending on your settings, apps, kernel settings and ROM you run. So yes, it does matter if you can get 3.5hrs on screen instead of 1.5hrs.
People don't want to have to carry their charger with them all the time in fear of their phone dying on them in the middle of the day.

For me it is just the simple fact that I can run my phone for almost 2 full days without a charge (not kidding either). But I would venture to say that for most, it is because of the whole reason why many are here. We're Tweakers and no I don't mean Meth addicts. We do it because we can. I don't undervolt at all but I do overclock my kernels a bit (not max) but have found a really nice balance that will give me plenty of time using my phone and not having to worry about charging. Yup, I use my phone.
I smile to myself when I see these screen shots and the line is smooth and flat. Not sure if you are a skier or not but a good analogy is if you see a Double-Black Diamond (expert/steep), there is something wrong. If you see a Blue-Square (intermediate/nice slope) then you are good to go. Green-Circle (begginner/very low gradiant) means that noting is running.
Btw moving to Q&A

I feel the same as the OP. I don't OC/UV for pretty much the same reasons. I don't care. I have run Juice Defender in the past on stock setting values because I was basically lazy and didn't feel like tweaking the sh*t out of it to get the "best" battery life. Not to mention I don't like that it literally turns off your cell radio and initializes it in incremental intervals. I have actually been running an app called One Power that is free on the Play Store and have found it does improve my battery life mostly when my device is idle. But I, like you, am hardly obsessed with getting the best battery life. I don't use extended batteries because I hate how they make the phone twice as thick and I tend to avoid anything non-OEM for obvious reasons. I'm basically happy if I can get through a day on a single charge. I do have a 2nd OEM battery I keep charged in case I don't have time to fully charge up. Our expectations of getting days worth of use on a single charge is just ridiculous and unrealistic. If I cared that much I'd switch to Verizon and get a RAZR Maxx. But that ain't happening anytime soon! Besides, not all phones are created equal so - what works for one person may not work for another. I feel discussions of battery life in ROM development threads are a waste of time and serve only to clutter and detract from development of the ROM. Apps, use, etc are huge variables and will vary greatly from one user to the next. So, when people say "battery life on this ROM is great!" I usually roll my eyes and ignore the post.
Sent from my Nexus 7

t3chn0s1s said:
... I have actually been running an app called One Power that is free on the Play Store and have found it does improve my battery life mostly when my device is idle. <SNIP> I feel discussions of battery life in ROM development threads are a waste of time and serve only to clutter and detract from development of the ROM. Apps, use, etc are huge variables and will vary greatly from one user to the next. So, when people say "battery life on this ROM is great!" I usually roll my eyes and ignore the post.
Sent from my Nexus 7
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Click to collapse
Hey, can you shoot me a PM with more about that App. I'll check it out tonight but can you give me more info on it from a real-life user and not some Market desc/review.
Also, report those stupid posts in the Dev threads and we can delete those. I saw one the other day about 5 hours after a ROM came out (new thread and all) stating that the battery life was "Awesome!!!". How in the heck could you know after 5 hours of the ROM being posted (he was not a tester either), let alone being flashed. Rediculousness.

Woodrube said:
Hey, can you shoot me a PM with more about that App. I'll check it out tonight but can you give me more info on it from a real-life user and not some Market desc/review.
Also, report those stupid posts in the Dev threads and we can delete those. I saw one the other day about 5 hours after a ROM came out (new thread and all) stating that the battery life was "Awesome!!!". How in the heck could you know after 5 hours of the ROM being posted (he was not a tester either), let alone being flashed. Rediculousness.
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Sure. I just use the default settings the app comes with but you can tweak it to your liking. Will send you a PM shortly.
Edit: I couldn't agree with you more on the battery life postings 5 hours after a ROM has dropped. That's absolutely ridiculous and impossible to gauge so soon. You gotta give it at least a couple days to be able to accurately judge the battery life.
Sent from my Nexus 7

t3chn0s1s said:
Sure. I just use the default settings the app comes with but you can tweak it to your liking. Will send you a PM shortly.
Edit: I couldn't agree with you more on the battery life postings 5 hours after a ROM has dropped. That's absolutely ridiculous and impossible to gauge so soon. You gotta give it at least a couple days to be able to accurately judge the battery life.
Sent from my Nexus 7
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Click to collapse
to use the app, root is mandatory? i didnt root my phone, i installed the app, and it shows all the required settings, but when I try to customize, it needs root, my question is, if we use the existing mods, i can use the app, without rooting the device. right?
TIA

atrix4nag said:
to use the app, root is mandatory? i didnt root my phone, i installed the app, and it shows all the required settings, but when I try to customize, it needs root, my question is, if we use the existing mods, i can use the app, without rooting the device. right?
TIA
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Click to collapse
Yes. My dad uses the app on his unrooted Galaxy Nexus with no problems. You just can't tweak the settings unless you have root.
Sent from my Galaxy S III

t3chn0s1s said:
Sure. I just use the default settings the app comes with but you can tweak it to your liking. Will send you a PM shortly.
Edit: I couldn't agree with you more on the battery life postings 5 hours after a ROM has dropped. That's absolutely ridiculous and impossible to gauge so soon. You gotta give it at least a couple days to be able to accurately judge the battery life.
Sent from my Nexus 7
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Well it didn't take long for even this thread to turn into people discussing how to get better battery life out of their phone! haha. Figures eh?

I work a blue collar job so I need my battery to last all day. I'm not at a desk whee I can charge.......
Sent from my SAMSUNG-SGH-I747 using xda premium

My friend lost his son and since his phone didn't have juice, he couldn't call 911 fast enough. Had to plug in the charger for like 2 mins first. That's why.
Sent from my SAMSUNG-SGH-I747 using xda app-developers app

I'm generally indifferent about battery life and attempts to prolong it for 2 reasons.
1. The settings and customization done by the manufacturer are stable values tested and balancing between battery life and the features of the phone.
2.Everyone know what they're getting jnto when they buy a phone with ~4 inch screen,has LTE and top of the line features. It's rather obvious that battery life won't be great, if it isn't then you might as well just go back to the candy bar phones, if you expect the best and the newest AND battery life.I certainly didn't expect my phone to run for 10+ hours when I got it... and besides buying the best phone on the market and then turning everything off to conserve battery life just defeats the purpose. Just buy an extended battery, buy the extra battery OEM and bring a spare along, or have an external charger as well as a 2amp usb charger.
Edit: When I initially got the phone, it was getting 6-8 hours on a charge after a couple of months 12-14 hours per charge. The same thing happen on the JB OTA, Im getting between 10-18 hours depending on my Reddit, Twitter, Gmail and Engadget usage, though I have to admit there are sometimes problems with some apps preventing deep sleep and occasionally what seems to be memory leaks with apps constantly using the data connection.
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I like pushing it to see how far the battery can go. I could make it through the day before, but with some compromises. I bought an extended battery and flashed a new rom (which came with some good kernel settings to mess with), and now I can keep everything on and go two days without a charge.
For me it's more about getting what I'm used to--recently switched to gs3 from an iPhone 4, which had amazing battery life. I got around 8 hours screen on with that and initially only 3 with the gs3. So I tweaked away and now it's back to what I expect!
Edit: also I tweaked my way to better battery life because I can--why settle for something that could be better?
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