Battery Life - Epic 4G General

Hi there, we've had multiple threads in the past on battery life. It will always vary, and I don't want it to get too complex. I only want to keep it simple. So post:
Your Rom, How many hours you got on a full charge, do post any tweaks or clocking/volting.
I'll start.
EL30 Stock Tar. 14Hrs 6m. 3G Turbocharger Script. Stock Clocking, Stock Voltage.
Sent from my SPH-D700 using xda premium

I'm actually still using the Rom that Marcusant recently removed due to possible conflict of interest...AOKP victory build 27. I've gotten 36hrs with 39% battery left as I'm typing this. That's with light to moderate usage using included tweaks and Rom Tool box's tweaks. Great work Marcusant...it's a shame you didn't stick with Rom itself.
Sent from my SPH-D700 using xda premium

Related

Baked Snack 1.6 kernels

Does anyone have the kernel that was for download that it was the best for battery. There was baby step, step 2 and the last one which I would like. If someone can give me the link to it or something it would be greatly appreciated.
Sent from my SPH-D700 using XDA App
It's called Ultimate.. http://www.bakedsnackshack.com/source/ultimate.zip
Thanks So much.
http://www.bakedsnackshack.com/source/
Heres everything he has to offer
Sent from my SPH-D700 using XDA App
Fantastic battery life. I guess my phone is not a blacksheet per the makers of syndicate.
I've been testing out 1.6 with the "ultimate" kernel for the past few days- it is very responsive and only have had a couple probs (found phone shut off twice- once while charging and once while during idle). Compared to the rest, I don't notice a significant change in battery life, still avg about 10%-15% per hour with moderate use.

Kernel flashing ?s

I have the syndicate loaded ROM with xtreme kernel. V1.0.1
I noticed there is a newer version of the kernel. I'm am very much a noob so I need someone to tell me step by step, how do I flash the updated kernel?
Sent from my Epic 4G using Tapatalk
ok, figured it out
Any difference after the new kernel?
I am using the Syndicate ROM but the extreme kernel was too buggy for me ( too many fc's) even after mutiple wipes. I went to the Fluffkernel and it is awesome, I am using the battery saving one and I am still at 50% at the end of the day.
Sent from my SPH-D700 using XDA App
iwantAdollar said:
Any difference after the new kernel?
Click to expand...
Click to collapse
So far I notice an amazing battery life since upgrading, 74% after 12 hours with minimal usage (6 hours asleep). Before, I would lose about 40 percent with 6 hours sleep.
Sent from my SPH-D700 using Tapatalk

XWKJ2 battery wow

Hi all
I just want to share what I discovered with kj2 full stock.
Yesterday i did full flashed xwkj2 leave it over night with data on and skype on for 8 hrs. Idle from 100% battery and ending up with 97% after 8hr idle. I have never seen my phone does this with any of the stock room.
So i though i'd share it with you guys
Sent from my GT-I9100 using xda premium
I think the latest Skype handles idle time much better, but I agree that KJ2 is improved even over KI8, particularly when using Speedmod's kernel, which has far better Wifi support.
The wow part is the fact that i use stock all the way. No custom kernel
What so ever.
Hope this rom will be serving for awhile
Sent from my GT-I9100 using xda premium
There's already a thread discussing this ROM here: [ROM] I9100XWKJ2 [21.10.2011][Android 2.3.5].

Display always 75% or higher

I don't know what happened but I'm having issues. I cannot get the display to fall below 75% and it sucks because between my EVO stock battery and my extended battery you can actually see the battery life being sucked away rapidly.
Sent from my PC36100 using xda premium
I am having the same issue with my display can't figure out. What
Rom are you using I am using swag Rom
Iturned of the auomatic brightness on my phone and set it manually since installing cm7
Sent from my NOOKcolor using Tapatalk
jerrykur said:
Iturned of the auomatic brightness on my phone and set it manually since installing cm7
Sent from my NOOKcolor using Tapatalk
Click to expand...
Click to collapse
This manual setting will lower it a ton don't need it at full brightness half the time.
Sent from my PC36100 using xda premium
I have the same issue, it is isolated to Sense roms. It doesn't happen with AOSP, which is why those are the only roms I can use due to the battery life. We had a thread going for a while with some other people who had the same problem, but nobody could really get to the bottom of it. I reached out to Aamikam but he couldn't really help or didn't want to. I didn't know if a logcat or anything would have helped but no one really answered me. It happens on froyo and gingerbread sense roms, and I never had the issue for a long time but then I noticed it the first time on MikFroyo 4.62. I've tried everything since then but no results.
Only thing to do right now is switch to an AOSP rom, I highly recommend Team Nocturnal's Xplod. Very smooth with Tiamat 3.3.7 kernel and more eye candy than CM7. I would love to be able to use MikG again but my battery literally dies in 4 hours, regardless if I'm using the phone or not.
Alot of ppl seem to think that 75 percent or more of display is bad. Really it isn't. The battery stats need to equal 100 percent. On sense roms that's the way it is and there is nothing wrong with it. Now if your experiencing high.android system usage, that's a problem. As long as everything else is relatively low, its all good
Sent from my PC36100 using XDA App
Its after I installed the new update. Even downgraded to earlier gingerbread and still 75 plus.
Yes my system is low but I can watch my battery meter lower in realtime. Well I guess its time for a new toy.
Sent from my PC36100 using xda premium
Prene said:
Its after I installed the new update. Even downgraded to earlier gingerbread and still 75 plus.
Yes my system is low but I can watch my battery meter lower in realtime. Well I guess its time for a new toy.
Sent from my PC36100 using xda premium
Click to expand...
Click to collapse
If your actively using your phone and it drains rapidly that's pretty normal in my experience. But if its draining a lot during idle, check for a rogue running app. Otherwise not using auto brightness is a good mentioned trick along with underclocking with a new kernel should help
Sent from my PC36100 using XDA App
It has to do with the use of a generic power_profile.xml. Neither CM or stock use correct values for this.
ndstrctbl said:
Alot of ppl seem to think that 75 percent or more of display is bad. Really it isn't. The battery stats need to equal 100 percent. On sense roms that's the way it is and there is nothing wrong with it. Now if your experiencing high.android system usage, that's a problem. As long as everything else is relatively low, its all good
Sent from my PC36100 using XDA App
Click to expand...
Click to collapse
You don't get it...this is not normal display usage. I remember what my battery usage and battery life was like before this problem came up and there was a huge difference. Before, cell standby was my highest usage and I could get 25-30 hours on a charge. Then display usage shot up to 90% give or take some, and battery life dropped to 4-8 hours. I can understand if display was slightly higher than everything else, but display is at 75-95% while everything else is under 5 or 10. There is absolutely no reason why the display usage should be that high even when the screen has been OFF the entire time. That's not normal. I have multiple screen shots to back it up.
sbradymobile said:
It has to do with the use of a generic power_profile.xml. Neither CM or stock use correct values for this.
Click to expand...
Click to collapse
Is there a way to fix or change this? And is there a reason why it happens to some people but not others?
Sent from my Nocturnal 4G using XDA App
Well if its been off then I don't have the slightest clue.
Sent from my Nocturnal 4G using XDA App
So using bootmanager (finally works now) I loaded miui. And my display is no higher than 1%. So something is very very wrong with sense and 4.5 updates.
Sent from my PC36100 using xda premium

Charging my phone

Whenever I leave my phone charged overnight, I wake up to around 70% charged. It's as though once it reaches 100%, it stops "charging" and it starts using the battery's energy, rather than the AC. Any help?
ahlexkim said:
Whenever I leave my phone charged overnight, I wake up to around 70% charged. It's as though once it reaches 100%, it stops "charging" and it starts using the battery's energy, rather than the AC. Any help?
Click to expand...
Click to collapse
What kernel/rom are you running. The only suspect is that your kernel does not have "trickle charge" in the new kgb kernel you have to enable this with the app.
Sent from my SCH-I500 using XDA App
I'm running a stock 2.3.5 Gingerbread.
Kernel is 2.6.35.7
What App is it?
ahlexkim said:
I'm running a stock 2.3.5 Gingerbread.
Kernel is 2.6.35.7
What App is it?
Click to expand...
Click to collapse
Using pure stock, like you are, im not too sure why trickle charge isn't working. Are you against flashing custom roms/kernels?
Sent from my SCH-I500 using XDA App
I'm not sure how the whole thing works... but I'll do it, doesn't seem too bad
ahlexkim said:
I'm not sure how the whole thing works... but I'll do it, doesn't seem too bad
Click to expand...
Click to collapse
Yeah its pretty simple man, find droidstyle's guide for roms and mine for kernels. That'll give you the info you need.
Sent from my SCH-I500 using XDA App
Is there any Custom ROM in particular that you would recommend?
go here http://forum.xda-developers.com/showthread.php?t=1238070 and follow step 2, then go to http://forum.xda-developers.com/showthread.php?t=1459905 readthrough the first part on TW kernels, choose one of the 3 custom kernels (not the stock one), best advice is to read the op of each one and find one you think will work for you. they are all three well written kernels. one is already oc'd to 1200, which means no need for voltage control if you plan to oc your phone. most phones are stable at 1200 but thats just from doing alot of messing around and odining. the second post is the instructions for flashing the kernel. the first post just explains all of them to the best i could w/o kanging any information from the op. i just ran what i knew off memory. links to each kernel's op are at the bottom of post 1. i did links to the op's instead of posting dropbox files due to the fact that I want people to make sure they know what features each kernel has before they download it.
I would give battery calibrator app a try. It could be that when you flashed your ROM, the battery stats got jacked up
Sent from my SCH-I500 using XDA App
kadin.zimmerman said:
I would give battery calibrator app a try. It could be that when you flashed your ROM, the battery stats got jacked up
Sent from my SCH-I500 using XDA App
Click to expand...
Click to collapse
Actually there are numerous threads and posts online saying battery calibration does absolutely nothing
And besides you can clear battery stats in CWM
Sent from my SCH-I500 using XDA App
mkuehl06 said:
Actually there are numerous threads and posts online saying battery calibration does absolutely nothing
And besides you can clear battery stats in CWM
Sent from my SCH-I500 using XDA App
Click to expand...
Click to collapse
The way I understand it is WIPING BATTERY STATS Is pointless, battery calibration however is recommended. Heard this on many tech podcasts.
Sent from my SCH-I500 using XDA App
icemanwbs said:
The way I understand it is WIPING BATTERY STATS Is pointless, battery calibration however is recommended. Heard this on many tech podcasts.
Sent from my SCH-I500 using XDA App
Click to expand...
Click to collapse
They are essentially the same thing. Battery Calibration is wiping the battery stats and running the phone dead than fully recharging.
I have been having a very similar issue. A buddy of mine (captivate) and I found that the phone wont charge past 98% on CyanogenMod with the Glitch kernel. I set the phone to not lock and keep the screen on while charging and the problem went away. The phone also would not stay on A/C power after reaching 98%. This issue was fixed too.
I think its an inherent problem with the batteries on the phones, since the issue occurs on many different roms/kernels/phones.
whether it's caused by the phone, ROM, or kennel, battery calibrator is a simple app that is at least worth a try in my opinion
Sent from my SCH-I500 using XDA App
kadin.zimmerman said:
whether it's caused by the phone, ROM, or kennel, battery calibrator is a simple app that is at least worth a try in my opinion
Sent from my SCH-I500 using XDA App
Click to expand...
Click to collapse
Imo opinion it didn't help me at all. But ive said that no two fascinates run the same. What works for one may not for the other.
Sent from my SCH-I500 using XDA App

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