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okay i have alot of thoughts and questions on the htc evo battery life. first off i think the devs have done a great job with improving it but in reality we aren't there yet IMO. i mean coming from the hero after calibration and a 1750mAh battery i had what id call good battery life, even without the use of custom kernels or setcpu. even with calibration on the evo, the bottom line is the battery life sucks ass. i cannot even believe htc released a phone with such ****ty battery issues. ive even seen posts on here from people with extended batteries with crap battery life as well.
number 1 they should of shipped it with a higher capacity slimline battery. if it weren't for the devs here the phone would be unusable as i can remember the first time i bought the evo in july i had it for a week and got rid of it the battery was soo bad.
then we have battery mod scripts like calkins & the colin tweak that honestly never did much for my phone. then of course the much debated sbc mod that alot of people says created issues. my own take on it is it seems more of a visual effect or placebo than anything. yes it seems to hold a charge a bit longer but only when the phone is not in use. whats the sense of owning a phone such as great as the evo but be afraid to use it at all?
the reason i do not use sbc is because something to me doesn't seem right about the way it charges the battery. for example: my phone had 88% battery left before i flashed the sbc mod, then after reboot it was back to fully charged? how the hell can that be possible?
so im sorry for venting but sometimes i think i may look into a smaller android phone such as the optimus s or another hero. does the evo shift have these issues as well?
so now i ask for advice from the users that "claim" to get well over 24hrs battery life on stock batteries. im running myn's rls4 rom with the netarchy 4.2.2 /less havs/ no sbc kernel. if i choose to use setcpu and do not want to overclock what settings should work best? or did i hear that havs & setcpu do not play well together?
thanks for listening!
My biggest issue is that it's very inconsistent. I'm on MikFroyo 4.3. When I flashed this ROM I upgraded to all the newest radio, PRL, PRI, etc. It used the stock HTC #15 kernel and I was getting OUTSTANDING battery for the first 5-7 days. Then, literally overnight, my phone started losing 10% of its battery per hour while NOT IN USE. And, no, it wasn't the Up vs. Awake issue, I hadn't installed any new apps, none of that. So I "downgraded" PRI to 1.77 and STILL, absolutely horrible battery life. I've tried different kernels but nothing works. I can take my phone off the charger at 5am and be down to 15% battery by noon with LIGHT use. Signal strength isn't an issue either. It's just frustrating. I understand that these phones have large displays and constantly multi-task but you would think HTC would realize that these phones are going to be used by "power users" and plan ahead for it. But I suppose if our battery wasn't an issue we would just find something else to ***** about all day, lol.
Try miui, that rom gives me the best battery life I have ever seen.
Buff McBigstuff said:
Try miui, that rom gives me the best battery life I have ever seen.
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+1. I get better battery life with my EVO running MIUI than I did on my Motorola Renegade clamshell phone, and probably twice the life I got with my Hero. I replace my battery with a charged one every morning and I generally still have 50-60% life left when I do that. I have gone 2 full days on a charge. I did not get this kind of battery life out of any sense ROM I have tried.
You say, MIUI, I say CM6 or 7. All depends on what you like, really in regards to ROM.
I can say that I do get better battery life on CM vs something like Myn's. My phone does stay on for more than 24hrs with somewhat light usage. That means the display is on for about 2-2:30hrs in that time while I browse the web or look at videos, but the rest of that time, it has all of its radios on and is constantly pulling down updates for Twitter, FB, NYT, and Yahoo Mail.
I haven't had any sudden drops in battery life, but if I did, I'd probably buy a new OEM or near-OEM quality battery to replace it.
My BB Tour used to do far less and yes, it lasted longer, like days without a charge, but it didn't have all this stuff going on. So yeah, comparing this large bar phone with its huge display, on-going processes is sorta unfair.
That said, I do wish it lasted 2 or 3 days with light usage.
garekinokami said:
You say, MIUI, I say CM6 or 7. All depends on what you like, really in regards to ROM.
I can say that I do get better battery life on CM vs something like Myn's. My phone does stay on for more than 24hrs with somewhat light usage.
That said, I do wish it lasted 2 or 3 days with light usage.
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Coming from Myns rls 5 to cm7 both with stock kernels I could honestly say I see better battery life wit no OC on the CM7 rom. From my experience using warm 2.2 roms, I could get nearly 40 hours on the phone but in order for that to happen I have to barely use it. Which basically means its pointless. I mean if that's the case I might as well leave the phone turned off. Not to mention how much of your time that gets consumed searching for the perfect kernel to fit to your liking and phone.
I really do think the battery sucks on the evo but there are ways and roms to make it manageable. Sooner or later the new duel core & Tegra processors will be here soon, so bad battery life should be a thing of the past. Only because the CPU wont work so hard while sharing the strain we put on are phones. Lets just all sit tight and let technology take its coarse.
r0cky.Da.3v0.SU.-
+1 for MIUI. This is the best battery life I've ever seen. To the point where I stopped carrying my charger around. I still keep and extra battery just in case but I haven't had to use it in weeks. I get through the day easily on a full charge and I have no problem charging mine at night...I've been doing that since back in the day with flip phones. I thought everyone charged overnight while sleeping or is that not the norm?
Its also a norm for me if it needed it. Another reason I think MIUI and CM Roms are good on battery life is because ultimately they don't have 4g. I've been on the same charge all day and I still got some juice left to flash the new nightly for cm7. U gotta love it.
r0cky.Da.3v0.SU.-
Doesn't CM have 4G now? Even when I was on Sense roms I rarely ever used the 4G though. Same here though, I took my phone off the charger around 3pm, got home from work around 4am and still had plenty of juice left to back up, flash the new MIUI rom, and set it up. Seems like battery is getting better with every new release. No complaints here.
I don't get 24 hours battery, but I don't lose any battery while idle on a sense rom either. I'm on mikfroyo, with net's 4.3.1 cfs havs nosbc kernel. I'm using setcpu, and my screen off profile is 245 min and max smartass. With the screen off I barely lose any battery at all. I charge my phone periodically throughout the day, but I've gone 10+ hours off charger (with moderate usage, but no gaming or anything like that) and still had a good 40% battery left.
Sent from my blah blah blah blah
Keep in mind these phones have 8mp cameras, 1ghz processor and tons of extra memory. Basically the equivalent of the lap top computers of 2 years ago.
Sent from my DROIDX using XDA App
fachadick said:
I don't get 24 hours battery, but I don't lose any battery while idle on a sense rom either. I'm on mikfroyo, with net's 4.3.1 cfs havs nosbc kernel. I'm using setcpu, and my screen off profile is 245 min and max smartass. With the screen off I barely lose any battery at all. I charge my phone periodically throughout the day, but I've gone 10+ hours off charger (with moderate usage, but no gaming or anything like that) and still had a good 40% battery left.
Sent from my blah blah blah blah
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Honestly anything over eight hours is descent especially if u still have juice left over. Even with that said and speaking for all the cm users, I can honestly say that netarchy kernels are definitely not needed using this rom. Even though its a great kernel, That would be kinda suicidal towards my battery life.
"Sent to you from a Gingerly Gingerbreaded Evo rockin' CM7 flashing Nightly."
-r0cky.Da.3v0.SU.-
ajones7279 said:
Doesn't CM have 4G now? Even when I was on Sense roms I rarely ever used the 4G though. Same here though, I took my phone off the charger around 3pm, got home from work around 4am and still had plenty of juice left to back up, flash the new MIUI rom, and set it up. Seems like battery is getting better with every new release. No complaints here.
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Yeah, CM6 has wimax but CM7 doesn't. On the account of the Rom isn't stable yet.
"Sent to you from a Gingerly Gingerbreaded Evo rockin' CM7 flashing Nightly."
-r0cky.Da.3v0.SU.-
Okay, so the thing is I have an HTC Evo 4G with the following:
- The latest RC of CM7 (not a nightly or anything like that)
- A 3500mAh battery from Sedio
- Whatever default kernel comes with CM7
- A Sedio case made just for the extended battery
I like the Sedio case and everything, but I kind of want to use something else that looks better or feels better. That, and my current Sedio case is quite bulky and I could do with less of that bulk.
But the thing is I love the insane battery life the Sedio battery has given me. The 3500mAh is incredible and I can usually go about 4 days on a single charge and with moderate use. I don't really want to give up good battery life, but I want to get a different case for once that isn't so bulky.
Then I did some reading around and found out I can still get decent battery life after downgrading to a smaller battery if I use Juice Defender and pick the proper kernel. I've fallen back on my Galilio 2000mAh battery so the original snap-on back will fit on it again. I have Juice Defender Ultimate running on it, and the last thing I need now is a kernel.
Now, I'm somebody who hasn't switched around with kernels before, and even after reading the guides on kernels, I still would feel better if I could get opinions from other users regarding them. The guides are useful if only for helping me understand kernel terminology, what kernels are, and what they do, but as to which one is the best, it's not really quite obvious.
So that's why I'm going to ask: I've narrowed my choice down to 2 kernels I'm thinking of trying (I'm afraid of that SBC that supposedly messes up batteries or something): Tiamat and Savaged-Zen with no SBC, but I don't know which one is better for conserving battery since it isn't really that obvious at a glance. Which one is a better choice in your experience for CM7 when it comes to extending battery life as long as possible? In short, yeah, I need help picking since I'm a kernel noob. I would appreciate help or information, thanks in advance.
Truthfully Tiamat and SZ are top notch kernels and will boil down to which one YOUR phone likes. For example, my phone didn't like SZ at all for some reason. Created some real issues.
As far as SBC, there isn't anything to worry about. Tiamat SBC more havs kernel is fantastic and I never had a problem. I was on an AOSP forever until the Synergy RC's came out.
Another thing you might want to look into are the undervolt scripts like ViperMod. I was running the 100mV one with the above and getting ridiculously solid battery life.
I didn't care for JuiceDefender myself, I didn't get anything better with it installed. I also didn't spend the time to tweak it probably how it should have been.
SirSigma said:
Okay, so the thing is I have an HTC Evo 4G with the following:
- The latest RC of CM7 (not a nightly or anything like that)
- A 3500mAh battery from Sedio
- Whatever default kernel comes with CM7
- A Sedio case made just for the extended battery
I like the Sedio case and everything, but I kind of want to use something else that looks better or feels better. That, and my current Sedio case is quite bulky and I could do with less of that bulk.
But the thing is I love the insane battery life the Sedio battery has given me. The 3500mAh is incredible and I can usually go about 4 days on a single charge and with moderate use. I don't really want to give up good battery life, but I want to get a different case for once that isn't so bulky.
Then I did some reading around and found out I can still get decent battery life after downgrading to a smaller battery if I use Juice Defender and pick the proper kernel. I've fallen back on my Galilio 2000mAh battery so the original snap-on back will fit on it again. I have Juice Defender Ultimate running on it, and the last thing I need now is a kernel.
Now, I'm somebody who hasn't switched around with kernels before, and even after reading the guides on kernels, I still would feel better if I could get opinions from other users regarding them. The guides are useful if only for helping me understand kernel terminology, what kernels are, and what they do, but as to which one is the best, it's not really quite obvious.
So that's why I'm going to ask: I've narrowed my choice down to 2 kernels I'm thinking of trying (I'm afraid of that SBC that supposedly messes up batteries or something): Tiamat and Savaged-Zen with no SBC, but I don't know which one is better for conserving battery since it isn't really that obvious at a glance. Which one is a better choice in your experience for CM7 when it comes to extending battery life as long as possible? In short, yeah, I need help picking since I'm a kernel noob. I would appreciate help or information, thanks in advance.
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Click to collapse
SBC can mess up your battery but I'd guess its a one in three hundred chance. It does give huge battery benefits.
My phone likes savaged zens kernels.
Battery calibration is also very important its a market app. Helps alot
Also. I'd reccomend trying decks 1.2.1 its a perfectly stable 2.3.4 much like cyanogenmod with a few tweaks and mods to optimize it for the evo, also its a bit more of the pure Google experience. The developer is great, and has a 2.3.5 build coming in the coming weeks.
Sent from my Xoom using XDA Premium App
Thanks for the responses.
After thinking about it, I'm thinking of trying Tiamat with SBC at the moment after all. The odds of anything bad happening with SBC seem to be really slim, and even if something bad does happen, I have more than one spare battery to fall back on.
So I'm going to try this one first and use the Battery Calibration app. I'm not sure how much this app will help since I deleted all my battery stats from within CWM after changing batteries yesterday (and to my knowledge, that's all the app really does for you).
Anyway, I'm going to guess I just flash this like any other zip in CWM. Once I finish doing a nand backup, I'll let everyone know how it turned out.
SirSigma said:
Thanks for the responses.
After thinking about it, I'm thinking of trying Tiamat with SBC at the moment after all. The odds of anything bad happening with SBC seem to be really slim, and even if something bad does happen, I have more than one spare battery to fall back on.
So I'm going to try this one first and use the Battery Calibration app. I'm not sure how much this app will help since I deleted all my battery stats from within CWM after changing batteries yesterday (and to my knowledge, that's all the app really does for you).
Anyway, I'm going to guess I just flash this like any other zip in CWM. Once I finish doing a nand backup, I'll let everyone know how it turned out.
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That is all the app does, but it allows you to do it from the os. You can charge your phone to 100% and unplug your phone and calibrate as soon as the green light goes off when you unplug it. So its like perfectly calibrated. I use it every ROM / kernel flash
Sent from my Xoom using XDA Premium App
Well, after using Tiamat for a bit, my battery life appeared insane at first glance, since it took about half an hour to get to 99% battery life.
Then I started using my phone a little with my friend to show him some articles I marked in my RSS reader, and checking my texts/email, and several hours later, I've got about 62% remaining battery after 8 hours on a single charge. Still, I'm not sure if this is really the best I can get.
Also, it probably would have helped to use the calibrator after my battery was full, since I deleted battery stats in CWM only after flashing the kernel.
I know it's been asked before a million time, but I don't have an Inc my daughter does. she has been running cm7 for the longest time. but it's gotten really bad as time had gone on. I have seen the list of ROM and it is huge, all I care about is battery.. dont matter is it AOSP, sense, senseless etc.
Can you please suggest the rom with the best battery like.
Thanks
Running MIUI with incredikernel with smartass 2 enabled and 128 min, I can go 2 full days with medium use till I need to charge again. But what works for me might not be the same for you or anyone else, that all depends on what all you have running/syncing in the background, how many times it syncs, network data, etc.
paboater76 said:
I know it's been asked before a million time, but I don't have an Inc my daughter does. she has been running cm7 for the longest time. but it's gotten really bad as time had gone on. I have seen the list of ROM and it is huge, all I care about is battery.. dont matter is it AOSP, sense, senseless etc.
Can you please suggest the rom with the best battery like.
Thanks
Click to expand...
Click to collapse
If she is using the same stock battery that came from the phone, it's likely that now it can only hold 60-80% of the original charge- depending on her use.
Maybe consider dropping a few bucks on a 1900mah battery (fits in stock casing).
-- -- -- -- --
I would stick with CM7, and make sure you're using the incredikernel. Try flashing the predefined "undervolt" file. If she has reboots, then just revert it and no worries.
even i also have found that CM7 is the best for battery life
Irufan said:
even i also have found that CM7 is the best for battery life
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Going to have to +1 that. CM7 definitely has had the best battery life on my phone, and I've flashed a ton of ROMs. I'm also running Incredikernel with smartassv2, which I think helps a lot.
Sent from my ADR6300 using Tapatalk
Recent Anthem 3.0 can hold amazing charges, the OP had a 54 hour charge, someone also had a 20+ charge.
I'm guessing she uses it alot, Cm7 for me has been nothing but bad battery. Drains within an hour of medium use.
My suggestion is give the Anthem 3.0 a try and see how you and her like it.
Sent from my HTC Droid Incredible using Tapatalk
Try Inc-Deck 1.3. It's an offshoot of CM7.1 and it works great with incredikernel 3/21 ICS. Set the govenor to interactivex, the max frequency to 883, the screen brightness to 20%, the screen timeout to 15 seconds and cross your fingers that you live in an area with strong signal.
I get anywhere from 16-30 hours with that combo depending on how much data I use.
If your daughter does not use much data switch it off... an instant 3-6 hours battery boost.
withbloodskies said:
Recent Anthem 3.0 can hold amazing charges, the OP had a 54 hour charge, someone also had a 20+ charge.
I'm guessing she uses it alot, Cm7 for me has been nothing but bad battery. Drains within an hour of medium use.
My suggestion is give the Anthem 3.0 a try and see how you and her like it.
Sent from my HTC Droid Incredible using Tapatalk
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Click to collapse
I have to agree with this
Sent from my DrOiD InCrEdIbLe because its CoLd
Anecdotally, I have found battery life improves with two things: leaving the screen off as much as possible (screen always drags battery life) and using wifi when it's available (the comment on data usage is true, it's a drain).
Also, getting a second battery is always a good idea, adds to the versatility of your smart phone experience.
I've found that the older gingerbread and sense roms have better battery life.
I would look into Nils' Business Gingersense ROM, and PureMotive's Anthem ROM (http://forum.xda-developers.com/showthread.php?t=1530687)
I prefer Anthem, and if you follow the instructions on his post (using gingertiny kernel, setting CPU speed) you can achieve excellent battery life.
I personally used Anthem with Tiny's kernel and got about 48 hours with regular use.
I'm just wondering if there's any known methods to increase the battery life without sacrificing performance. I know the basic stuff like turning off Gps, Wifi, Data, etc. when not needed but is there anything else I can do to prolong the battery life? I'm currently running the wanam lite rom with trininty's alpha 7b kernel. A couple of people reported great battery life with this combo but I'm only getting a little bit better than stock battery life.
What exactly is a little bit better than stock? How many hours are you getting?
theexel said:
What exactly is a little bit better than stock? How many hours are you getting?
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Well with moderate use ( 3-4 hours of web browsing, playing games, etc.) on stock I get about 9 hours and with this rom and kernel I get roughly 9 and half.
theboss23 said:
Well with moderate use ( 3-4 hours of web browsing, playing games, etc.) on stock I get about 9 hours and with this rom and kernel I get roughly 9 and half.
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I get the same too, kind of hate it :/ I don't understand what drain so much when the phone is not in use, I always wonder why stand by time is so bad in my phone, I get much better battery life rooted but I'm stock right now, I got tired of flashing roms and I hate to wipe every time I flashed so I prefer stock to stop doing that
Sent from my SGH-T999 using Tapatalk 2
jgalan14 said:
I get the same too, kind of hate it :/ I don't understand what drain so much when the phone is not in use, I always wonder why stand by time is so bad in my phone, I get much better battery life rooted but I'm stock right now, I got tired of flashing roms and I hate to wipe every time I flashed so I prefer stock to stop doing that
Sent from my SGH-T999 using Tapatalk 2
Click to expand...
Click to collapse
Yeah, The rom is based off of stock H2 and is supposed to have some battery tweaks to make it last longer. All of the people said battery was good using this combo and 1 person said it's been 1 day 16 minutes, and they had 26% left but they didn't post the usage.
Ok this is with the stock rom. Heavy usage by my means any way. It was on the charger for a few mins here and there. But really not enough to show real battery increase.
Sent from my SGH-T999 using xda premium
The best way to determine battery life (not I played a game for a little, surfed the web over 4G, called some, texted all day) is to take a screenshot of your Screen On time, and overall time since charging. Otherwise, your statements are pointless.
If u have a rooted device u should try the highonandriod Rom it dies have better battery life than stock
theking_13 said:
The best way to determine battery life (not I played a game for a little, surfed the web over 4G, called some, texted all day) is to take a screenshot of your Screen On time, and overall time since charging. Otherwise, your statements are pointless.
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Click to collapse
Well the purpose of this thread wasn't to solve an issue with my battery life or determine my exact amount battery life, but rather to find out if there are any tricks to improve battery life. So there's no reason for me to post any screens of my battery stats because it's irrelevant to the thread, I was just wondering if anyone knew any tricks or tips they use to improve their battery life.
gonnapushthru06 said:
If u have a rooted device u should try the highonandriod Rom it dies have better battery life than stock
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Click to collapse
I'm very happy with Wanam Lite for now, it's so far the smoothest stock rom I've flashed and I'm eagerly awaiting the next update, so I don't really plan on flashing anything else for now. Thanks for the suggestion though, I'll definitely give it a shot when I'm looking for another rom to flash.
Disable auto synchronize. Thats the key.
theboss23 said:
Well with moderate use ( 3-4 hours of web browsing, playing games, etc.) on stock I get about 9 hours and with this rom and kernel I get roughly 9 and half.
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I'm on Verizon but I use synergy with imoseyons kernel and could get 5bhours browsing but I played fifa pretty much all day lol. Lte all day.
Via my Google Galaxy S3 with AOKP Butter
theboss23 said:
Well the purpose of this thread wasn't to solve an issue with my battery life or determine my exact amount battery life, but rather to find out if there are any tricks to improve battery life. So there's no reason for me to post any screens of my battery stats because it's irrelevant to the thread, I was just wondering if anyone knew any tricks or tips they use to improve their battery life.
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Don't use the phone. The screen will almost always be your biggest power draw. Screen-on time is relevant because if you have the screen on for three or four hours you aren't going to see battery life that is any better.
joshnichols189 said:
Don't use the phone. The screen will almost always be your biggest power draw. Screen-on time is relevant because if you have the screen on for three or four hours you aren't going to see battery life that is any better.
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Your right, it is relevant when comparing, but I'm not comparing anything here just looking for tips and tricks. I looked at battery stats when I compared the stock battery to the rom battery and recorded both stats on heavy use. If you want statistics, I got 9h 38m of battery use, internet and netflix took up 31% battery consumption, games took up 23%, phone calls and texting took up 12%, and the other 34% is basically screen off time. These were the stats from when I tested it on the Wanam Lite rom. I'm not confused as to why it only lasts about 9 and a half, hours as you can see I was constantly on the phone when I was testing it.
theboss23 said:
Your right, it is relevant when comparing, but I'm not comparing anything here just looking for tips and tricks. I looked at battery stats when I compared the stock battery to the rom battery and recorded both stats on heavy use. If you want statistics, I got 9h 38m of battery use, internet and netflix took up 31% battery consumption, games took up 23%, phone calls and texting took up 12%, and the other 34% is basically screen off time. These were the stats from when I tested it on the Wanam Lite rom. I'm not confused as to why it only lasts about 9 and a half, hours as you can see I was constantly on the phone when I was testing it.
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Well not only were you watching a video (I assume, instead of just browsing) Netflix, you were streaming. That probably did a number on your battery. I know I cannot stream Netflix for very long if I want my phone to last through the day. Also games, things that will ramp up the processor, etc while using the screen will tax your battery more than usual.
theboss23 said:
I'm just wondering if there's any known methods to increase the battery life without sacrificing performance. I know the basic stuff like turning off Gps, Wifi, Data, etc. when not needed but is there anything else I can do to prolong the battery life? I'm currently running the wanam lite rom with trininty's alpha 7b kernel. A couple of people reported great battery life with this combo but I'm only getting a little bit better than stock battery life.
Click to expand...
Click to collapse
Some may not like my answer because it removes some bells and whistles, but I suggest turning off all the motion features. Just my two cents. Battery life was better and I found most of the motion features unnecessary.
joshnichols189 said:
Don't use the phone. The screen will almost always be your biggest power draw. Screen-on time is relevant because if you have the screen on for three or four hours you aren't going to see battery life that is any better.
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Click to collapse
"Dont use the phone" ....LMAO!!
joshnichols189 said:
Well not only were you watching a video (I assume, instead of just browsing) Netflix, you were streaming. That probably did a number on your battery. I know I cannot stream Netflix for very long if I want my phone to last through the day. Also games, things that will ramp up the processor, etc while using the screen will tax your battery more than usual.
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Yeah, this isn't my everyday use, nor would I do this if I was trying to maximize my battery life. This was purely for testing the battery life on heavy usage and I found that it was only a little bit better when compared to stock. I'm in no way complaining, I think Wanam has done a amazing job with the rom. The stability is great, speed is comparable to JB roms, and battery is a lot better. Unless used heavily as shown above, then it's only slightly better then stock which is kind of odd but makes sense. I was just wondering what all a person could do to maximize their battery life, that's all.
jcbofkc said:
Some may not like my answer because it removes some bells and whistles, but I suggest turning off all the motion features. Just my two cents. Battery life was better and I found most of the motion features unnecessary.
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Thanks for the tip! I'll definitely try this since I don't use most of the motion features either.
lazarat said:
"Dont use the phone" ....LMAO!!
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Once again, thanks for the useless post. It's called sarcasm. Too bad your skull is too thick to pick up on it.
theboss23 said:
Yeah, this isn't my everyday use, nor would I do this if I was trying to maximize my battery life. This was purely for testing the battery life on heavy usage and I found that it was only a little bit better when compared to stock. I'm in no way complaining, I think Wanam has done a amazing job with the rom. The stability is great, speed is comparable to JB roms, and battery is a lot better. Unless used heavily as shown above, then it's only slightly better then stock which is kind of odd but makes sense. I just was wondering what all a person could do to maximize their battery life, that's all.
Thanks for the tip! I'll definitely try this since I don't use most of the motion features either.
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No worries! If you have trouble with idle battery drain, something like Juice Defender will help a lot if you're going to have the phone idle for extended periods of time. Other than that, all I can think of is underclocking (I run at 1350), and sometimes overclocking your min-CPU speed can help as well. The thought behind this is is that the CPU will be able to finish tasks faster, even if slightly, and then be able to go back into deep sleep. I know a lot of people on the Galaxy Nexus forums run 700min, 1000max because of this.
joshnichols189 said:
sometimes overclocking your min-CPU speed can help as well. The thought behind this is is that the CPU will be able to finish tasks faster, even if slightly, and then be able to go back into deep sleep. I know a lot of people on the Galaxy Nexus forums run 700min, 1000max because of this.
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Thanks, I actually didn't know that, I also heard undervolting can increase battery life and reduce the battery/phone heating up but someone said that it can it will have a major effect on the CPU, not sure if it's true or not.
I have cm10 stable on my galaxy s2 sgh-t989 and the battery life has not been good so I wanted to trying flashing another kernel. Can anyone tell me what kernels will work and if anyones had a good experience improving battery life by flashing a different kernel. Any information is appreciated. I haven't been able to find much about the t989 and flashing kernels. Thank you!
What's up with these threads in the wrong places every so often? It's like no one reads the rules now-a-days...
And also, don't just say that your battery life is bad without giving members a time of how long the battery lasts. We don't want to guess how long your battery lasts.
macboy3000 said:
What's up with these threads in the wrong places every so often? It's like no one reads the rules now-a-days...
And also, don't just say that your battery life is bad without giving members a time of how long the battery lasts. We don't want to guess how long your battery lasts.
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sorrry, I guess I should have posted this in Q/A ... but after about 2hours I'm already almost at 50 percent.
And is most of the time on standby or on heavy usage?
macboy3000 said:
And is most of the time on standby or on heavy usage?
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I would say in between ... my biggest question was really about the kernels. I can determine for myself what is good battery life with experimenting with flashing different kernels, among other things. I'm just looking for a bit more information on flashing a kernel, ones I can, ones I can't, etc.
benpottier said:
sorrry, I guess I should have posted this in Q/A ... but after about 2hours I'm already almost at 50 percent.
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Same here. I cannot get my phone past the 5 hour mark if I am using it. If I just leave it next to me alone, it lasts 7. If I have wifi on, however, it lasts 15! My guess is how strong the network is and whether or not you have an exchange account synced affects it. Another thing is, after a full charge your phone running CM10 will refuse to enter deep sleep for some reason, making for some very disappointing battery life. Rebooting it every time you disconnect a charger helps somewhat, but that's hardly practical: with a battery life this bad, that makes rebooting every hour since I keep it plugged in everywhere I can. I am resigned to lugging an external battery everywhere I go and hate every minute of it.
As for another kernel, don't bother. Battery life has sucked for me with every last rom and kernel combo I have tried, including stock. Numbers have been pretty much the same, and there are no wakelocks on it. What another kernel did manage to do is make my phone really hot and really slow, as well as reboot whenever it feels like it. Phone becomes utterly unusable.
Kernel won't help you. You are not solving one problem, you are solving several : radio, deep sleep and demand for data.
Sent from my GT-P5110 using xda premium
kangelov said:
Same here. I cannot get my phone past the 5 hour mark if I am using it. If I just leave it next to me alone, it lasts 7. If I have wifi on, however, it lasts 15! My guess is how strong the network is and whether or not you have an exchange account synced affects it. Another thing is, after a full charge your phone running CM10 will refuse to enter deep sleep for some reason, making for some very disappointing battery life. Rebooting it every time you disconnect a charger helps somewhat, but that's hardly practical: with a battery life this bad, that makes rebooting every hour since I keep it plugged in everywhere I can. I am resigned to lugging an external battery everywhere I go and hate every minute of it.
As for another kernel, don't bother. Battery life has sucked for me with every last rom and kernel combo I have tried, including stock. Numbers have been pretty much the same, and there are no wakelocks on it. What another kernel did manage to do is make my phone really hot and really slow, as well as reboot whenever it feels like it. Phone becomes utterly unusable.
Kernel won't help you. You are not solving one problem, you are solving several : radio, deep sleep and demand for data.
Sent from my GT-P5110 using xda premium
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dang, ok. Thanks for the info. I'll stick with cm10 and its stock kernel, see if I can't tweak anything to get better battery life.
Get an extended battery I found one on eBay that increases battery from 1850mah to 2400mah without that ugly hump add on to the back.
Sent From the T-Mobile Galaxy S2 using XDA-Developers app
Moved to Q&A as this is not Development
benpottier said:
dang, ok. Thanks for the info. I'll stick with cm10 and its stock kernel, see if I can't tweak anything to get better battery life.
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By the way, I was referring to the current crop of custom kernels for CM10. I wrote it as a general statement and I didn't mean it to be.
There used to be one kernel called KKO. If it gets ported to CM10, get it. Your battery life will still suck, but you will have a slightly snappier phone and more governors to play with. You can squeeze maybe an extra half-hour from the phone this way. Insignificant, I know. Also, the extended batteries are all sacrificing something: either NFC functionality, or the slimness of your phone (some require a custom back cover), or both. In the end, when you do the math, it adds about 2 hours of runtime to your phone: you are still running from charger to charger. The external battery gives me an additional ~7 hours of heavy use, but is a big phone-sized object tethered to my phone with a USB cable. I look like a suicide bomber with a wire running between my pockets. Not ideal, not by a long shot.