Develop Bugs

Horrible Batter Life - MikFroyo 4.4

As a base comparison, while I was running the stock HTC software (3.70) I could go 15-17hrs a day on a single charge. My typical day was to unplug the phone at about 8am and plug back in at about midnight. My average usage of the phone would be a little time in Angry Birds, a lot of crossword puzzles with an app called Shortyz (typically 2-3hrs a day), a lot of texting and email and some phone calls. Sometime I would have some usage of Google Nav. Wifi would be on 100% of the time, even when not connected to a network. When I finally plugged the phone back in I would typically have between 20-30% of the battery life left.
I flashed MikFroyo last week. Initially I did not wipe the user data first. I did wipe cache/dalvik. Updated profile and PRL on first boot. Everything was working fine, however, battery life was terrible. My typical battery life running MikFroyo has been 7-8hrs. About 1/2 what I was getting. And, with a typical day keeping me out of the house and away from a charger for 15hrs or more this is not a good situation. I am still using the phone the same way.
A few days ago I thought maybe the better actually had more life but the battery status was reporting it wrong. So, I wiped the battery stats, ran the battery down to 0 and then fully charged the phone. So far, I am getting the same reporting on the battery life.
Yesterday I had 100% at noon after another charge and by 6pm I was down to 20%. I love this rom and would like to keep running it if I can figure out how to get my old battery life back.
Thinking that it may have had something to do with the full wipe first I reflashed the rom, this time I did a full wipe/cache/dalvik twice before flashing the rom again. Battery life is still horrible. This does not make sense to me with MikFroyo using the same kernel as the HTC software and with all the bloatware that was removed plus my use of Titanium to freeze even more useless apps.
Anyone have any ideas what I can check to try to restore my original battery life?
Phone: Evo HW: 0003
Baseband: 2.15.00.11.19
Kernel: 2.6.32.17-gee557fd (HTC #15)
PRI: 1.90_003
PRL: 60674

Sounds like you have a wake lock. What's your up vs. awake time?

_MetalHead_ said:
Sounds like you have a wake lock. What's your up vs. awake time?
Click to expand...
Click to collapse
I just restarted the phone and have been going through all of the settings screens again. So, both times are very similar right now. I will let it sit for a bit and check agian.
If it is staying awake for some reason, what would you suggest I look at to fix it?

mdixon4az said:
I just restarted the phone and have been going through all of the settings screens again. So, both times are very similar right now. I will let it sit for a bit and check agian.
If it is staying awake for some reason, what would you suggest I look at to fix it?
Click to expand...
Click to collapse
It depends what is causing it.

I just checked again and the uptime and awake time are only a few seconds apart. So, it appears that I do have an issue with the phone remaining awake after it turns off the screen.
Back to my original question in regard to this: What should I check as possible causes?
Here is what is listed under Android System
Android System
HTC Widget Download Manager
Accounts & Sync
Network Location
Settings
Upgrade Settings
HTC Checkin Service
Setup
BrcmBluetoothService - Strange since Bluetooth is turned off
VPN Services
Rosie Utility
Settings Stortage
Thanks for the help

http://forum.xda-developers.com/showpost.php?p=8066920&postcount=1
Check out #9 on this post and see if it helps.
I've been on Mik's ROM for a weeks now, and I LOVE it!
Can't give you a battery comparison as I am on a 3500 mAh battery with netarchy 4.3.1-cfs-nohavs-nosbc Kernel.
You may want to flash a new Kernel and see if that helps as well. Won't be an apples to apples comparison with the stock sense with stock kernel, but if you are looking for better battery in general, I know that it has definitely improved mine.
-DreamSQK

Downgrade your pri back to 1.77 and all will be well again. This has solved many a battery problem, you're wake time will no longer be 100%. Give it a shot, always nand first just in case.

ifly4vamerica said:
Downgrade your pri back to 1.77 and all will be well again. This has solved many a battery problem, you're wake time will no longer be 100%. Give it a shot, always nand first just in case.
Click to expand...
Click to collapse
My PRI with this ROM and the stock software is/was 1.90. Can you give me a quick run down of what the PRI is and why going back should help?
Thanks

mdixon4az said:
My PRI with this ROM and the stock software is/was 1.90. Can you give me a quick run down of what the PRI is and why going back should help?
Thanks
Click to expand...
Click to collapse
Many people have reported 100% awake time with the 1.90 and different ROM/Kernel combinations. There is debate on what it actually is ... I won't go into that but give it a shot you shouldn't have ill effects and I'm betting the 100% wake will be fixed. If not you can always go back to 1.90. If you search there are plenty of threads on this. It was just discussed in the Mik thread also. Calkin has a whole thread on it. I'm on xda app right now or I'd post a link its "all radio wimax pri versions" or something. Just grab the 1.77 pri zip and flash away. Let me know how it works.
Evo Sent

try what he said that kernel is amazing!
DreamSQK said:
http://forum.xda-developers.com/showpost.php?p=8066920&postcount=1
Check out #9 on this post and see if it helps.
I've been on Mik's ROM for a weeks now, and I LOVE it!
Can't give you a battery comparison as I am on a 3500 mAh battery with netarchy 4.3.1-cfs-nohavs-nosbc Kernel.
You may want to flash a new Kernel and see if that helps as well. Won't be an apples to apples comparison with the stock sense with stock kernel, but if you are looking for better battery in general, I know that it has definitely improved mine.
-DreamSQK
Click to expand...
Click to collapse

here is the link to all of the radios just incase you didnt find it...
http://forum.xda-developers.com/showthread.php?t=715485

I had an issue with battery life with the first MikFroyo I flashed and the PRI downgrade was the answer. Also a netarchy kernel helped even more.

I flashed PRI v1.77 and netarcs 4.3.1 cfs-havs-nosbc. Will let you all know how it goes. I don't want to jump the gun either way without giving it some time to really show me what it will do.

There is nothing wrong with the PRI or the rom! You should find what is keeping the phone up. It certainly is not a PRI!

luist4498 said:
There is nothing wrong with the PRI or the rom! You should find what is keeping the phone up. It certainly is not a PRI!
Click to expand...
Click to collapse
for some people flashing 1.77 PRI it gives better battery life lots of people done it and it has helped alot with battery

Here, use this kernel too when you've figured out the rouge app.
http://forum.xda-developers.com/showthread.php?t=719763

snowboarda42 said:
Here, use this kernel too when you've figured out the rouge app.
http://forum.xda-developers.com/showthread.php?t=719763
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Click to collapse
i saw in your signature that you are using the netarchy 4.3.2 beta, is this beta kernel better than the stable 4.3.1?

snowboarda42 said:
Here, use this kernel too when you've figured out the rouge app.
http://forum.xda-developers.com/showthread.php?t=719763
Click to expand...
Click to collapse
Apparently there is still something going on. The Uptime vs Awake time seems to be more in line now but the battery is still dropping like a rock. It has only been off the charger a couple of hours with about 10min of uptime and it has already lost 25% of the battery.
So far today all I have used the phone for is about 20 minutes worth of calls and three text messages. Any other suggestions about what I should check?

mecampo said:
i saw in your signature that you are using the netarchy 4.3.2 beta, is this beta kernel better than the stable 4.3.1?
Click to expand...
Click to collapse
mdixon4az said:
Apparently there is still something going on. The Uptime vs Awake time seems to be more in line now but the battery is still dropping like a rock. It has only been off the charger a couple of hours with about 10min of uptime and it has already lost 25% of the battery.
So far today all I have used the phone for is about 20 minutes worth of calls and three text messages. Any other suggestions about what I should check?
Click to expand...
Click to collapse
List what Apps you have installed, how often you have stuff set to sync, etc.
What are your current awake vs Up times? Are you using it as much as your up time says?
Also, netarchy says
NOTICES: If you are noticing abnormally high battery drain and/or uptime, and you've updated to PRI 1.90, it has come to my attention
that this PRI has been problematic for a number of people, often resulting in large uptimes and/or poor battery life.
This issue affects people regardless of whether or not they are using a custom kernel
Downgrading your PRI and NV to 1.77 has been reported to resolve this issue.
You can find all PRI and NV versions by clicking here.
Click to expand...
Click to collapse
mecampo said:
i saw in your signature that you are using the netarchy 4.3.2 beta, is this beta kernel better than the stable 4.3.1?
Click to expand...
Click to collapse
Yep, I like it a LOT. I haven't gotten any FC or problems except with SetCPU but that was because I had set on boot checked. Everything else is phenomenal! It seriously is like SBC without the SBC, netarchy is the man. I'm off the charger for 3 hours today and at 90% after medium-heavy use (GPS, Gmail, etc).

With all the advice you're getting here (cannot necessarily disagree w/ anything altho I've had no problems on PRI 1.90)...once thing to keep in mind. Make sure you give any new kernel you flash 2 to 3 full battery cycles (full charge to dead back to full). You won't get a good idea for how it's working w/out a large enough sample size.

[Q] Battery Drain Since Moving To Stable?

Hey there,
I was using the CM7 nightlies for a while, and the battery life was great. However, it seems like ever since I flashed CM7 Stable my battery life has went down. The part I'm finding odd is that it didn't even last 12 hours today and I barely used the phone (especially in the first 8 hours since I was at work). As well, the battery usage shows Cell Standby and Phone Idle combined using over 85% power, which I've never seen before. I want to say it might be some of my apps, but they're the same ones I've been using. In case it makes a difference, here's my setup:
LauncherPro
Trillian
Clock/Weather widget from Fancy Widget
SetCPU on "conservative" setting
Gmail, Facebook, Messages widgets from LauncherPro
Power Widget
Score Mobile widget
None of my sync settings are really frequent, most are hourly refresh, another is 30 minutes. And since I haven't had this problem before CM7 stable I'm still thinking maybe it's something with the ROM.
What I'd like to know is if I should try to calibrate the battery first. And if that's the case, what is the best method to calibrate the battery so the ROM is reporting it accurately.
Thanks in advance

Anyone have any ideas?

I have been getting the BEST BATTERY LIFE EVER since moving to the latest radio.
Sent from my G2 running Cyanogenmod 7.

wipe the battery stats... look at the forum how to.

ibemad1 said:
I have been getting the BEST BATTERY LIFE EVER since moving to the latest radio.
Sent from my G2 running Cyanogenmod 7.
Click to expand...
Click to collapse
Which radio is that?

Always flash at 100%. Then use your phone at least 4 days, as in 2 complete cycles of using until you have to charge it again. Do not change your radio unless you are absolutely confident about the things you are going to do. Chances are you have a custom rom which does not match the radio you are trying to flash, resulting in a expensive ¨presse papier`.

HLeenders said:
Always flash at 100%. Then use your phone at least 4 days, as in 2 complete cycles of using until you have to charge it again. Do not change your radio unless you are absolutely confident about the things you are going to do. Chances are you have a custom rom which does not match the radio you are trying to flash, resulting in a expensive ¨presse papier`.
Click to expand...
Click to collapse
I appreciate the caution, but the current radio I have is the version that Virtuous recommended to update to. Is there a more "Cyanogen-specific" radio?

Bloodlvst said:
I appreciate the caution, but the current radio I have is the version that Virtuous recommended to update to. Is there a more "Cyanogen-specific" radio?
Click to expand...
Click to collapse
I got the stock radio and it's working perfectly. 28hours of uptime with ease (and everything on, incl pushmail). No GPS issues, good reception and no static in the background.

when you say use your phone for 4 days (2 completely cycles) until you have to charge it agian... what do you mean exactly? i need to charge mine after like 8 hours...
HLeenders said:
Always flash at 100%. Then use your phone at least 4 days, as in 2 complete cycles of using until you have to charge it again. Do not change your radio unless you are absolutely confident about the things you are going to do. Chances are you have a custom rom which does not match the radio you are trying to flash, resulting in a expensive ¨presse papier`.
Click to expand...
Click to collapse

polarbearmc said:
when you say use your phone for 4 days (2 completely cycles) until you have to charge it agian... what do you mean exactly? i need to charge mine after like 8 hours...
Click to expand...
Click to collapse
What I mean is that you should, after you flashed a new rom, drain the battery at least two times and charge it again fully. Or charge at 100%, flash and wipe battery stats after flashing to speed this up a little. Point is, there is no definite daily use. You could (usually not) notice a very small difference in batterydrain after flashing, but be sure it's not because of Bluetooth, Wifi, GPS or some other thing which is accidently turn on. That's why I said to use the phone for 4 days, and 2 complete cycles. I do not use my phone as heavy as you seem to do. Furthermore, I take care not to turn Wifi, Bluetooth or GPS on when I do not need those functions.

[Q] Gf's battery life (need suggestions)

I've done everything I know to do to help with her battery life. She has a hardware 0003 Evo, the exact same as mine. Both of us have Sprint Lovers ROM with PRI 1.77. I have Netarchy 4.3.4, she has 4.2.2 because 4.3.4 didn't work well on hers. The only real difference between our setups is mine. I have Titanium Backup with most of the useless apps frozen and UltimateJuice with the latest JuiceDefender Beta. I also use LauncherPro.
I've noticed that her device pulls high mA's when discharging. I believe I saw one over 1100mA earlier while looking at something on her phone.
I realize that my setup may be a bit more battery efficient than hers, but her drain should not be as high. She literally has to plug up several times a day, when I can go 2 days on a charge.
So does anyone have any suggestions? I really don't want to have to swap out her phone.

you should try nets 4.3.2 cfs havs less, or the no havs those are very stable and great with battery life, before you flash fill battery wipe caches and battery stats, flash kernel

Try installing the 4.3.4 kernel again but play around with the versions. Try a less-havs if more-havs doesnt play well. Maybe even no-havs. Try installing juice defender on hers also and see how well it plays out.

Update her PRI. I run the most up to date pri and don't have any battery problems. It's probably that I can almost guarantee it. Some phones work better with different set ups then others. To update you can use caulkins flashable update zip. Its in the dev section in the first couple pages if you don't feel like searching. Just be careful when flashing.

get a 3500 battery, or maybe her battery is defective. You're a sprint service technician? come on now

tonyh703 said:
get a 3500 battery, or maybe her battery is defective. You're a sprint service technician? come on now
Click to expand...
Click to collapse
This is a "what can I do outside of my expertise" thread, meaning modification methods.

Sunsparc said:
This is a "what can I do outside of my expertise" thread, meaning modification methods.
Click to expand...
Click to collapse
Well, I'm not versed on sense kernels, but perhaps try a less aggressive havs kernel on hers. Does he keep her 3G on all the time, cuz that'll be a battery drainer.
What she could do is change roms, or if she's willing to, try out AOSP.

Calibrate the battery.

3500!! is the answer. You can't do anything with the stock battery. Does she give it a full charge often? My girlfriend only charges were phone a few hours each night and complaines that it dies often... and thats with the 3500... Even if the light is gree and it shows 100% done, its not really done. Let that thing charge for 8 hours straight. Google Bump Charging... that helps too.

In addition to all things suggested here, never underestimate the power of turning off auto-sync and background data. I keep background data off all day and then turn it on for five minutes or so every night to check gmail, etc. If your gf is anything like the girls I mess with then she's probably just killing her battery by updating her Facebook status twice an hour and tweeting every time her cat farts. Not much you can do to help if that's the case...
Social mongers pay for their insolence in battery life. For the rest of is, there's the background data toggle
Sent from my PC36100 using XDA App

The_mamba said:
In addition to all things suggested here, never underestimate the power of turning off auto-sync and background data. I keep background data off all day and then turn it on for five minutes or so every night to check gmail, etc. If your gf is anything like the girls I mess with then she's probably just killing her battery by updating her Facebook status twice an hour and tweeting every time her cat farts. Not much you can do to help if that's the case...
Social mongers pay for their insolence in battery life. For the rest of is, there's the background data toggle
Sent from my PC36100 using XDA App
Click to expand...
Click to collapse
Actually, she doesn't, so I'll probably end up doing that. I tried her on CM7 but she didn't like it, gave her more problems than usefulness.

If she's not a big background data user then you should definitely toggle it off. With comparable usage, I typically get twice as much life-per-charge with background toggled off than on regardless of what ROM or kernel I'm running. It's the biggest little thing you can do.
Sent from my MIUI-GB-EVO

[Q] Battery Draining at 10%/hr

Recently purchased the T-Mobile Samsung Galaxy S2 and I flashed Beastmod v4.2 onto it. I'm experiencing a lot of battery drain, approximately 10% an hour with very minimal usage. I flashed the same ROM onto an identical SGS2 and the batterylife on that one is great. I've tried reflashing Beastmod but still getting the same issues. Anyone knows whats going on or how to resolve this?

How are you flashing it? Wipe everything and fix permissions?
Sent from my SGH-T989

I flashed it following the directions on the Beastmod thread in development.
1. Download it and place it at the root of your SD Card.
2. Boot into recovery.
3. Factory Reset then wipe cache.
4. Flash the ROM then wipe dalvik cache.
5. Reboot!

Beastmod is still 2.3.5, you should consider flashing one of the 2.3.6 ROMs and maybe updating your Radio to the latest , much better battery seems to come with the newer update ...

tcboo said:
Beastmod is still 2.3.5, you should consider flashing one of the 2.3.6 ROMs and maybe updating your Radio to the latest , much better battery seems to come with the newer update ...
Click to expand...
Click to collapse
Why would there be such a large discrepancy in battery life though from one T-Mo SGS2 with Beastmod to the other? That's what is making me scratch my head.

Did u do a battery Calibration? If not this might the reason why

Djapatos said:
Did u do a battery Calibration? If not this might the reason why
Click to expand...
Click to collapse
Umm yeah that too ... duh ....
There is a BIG change in 2.3.6 in battery life, at least what I am seeing and others have reported, some say it is the ROM some say it is the radio , I am using both, I get better battery life, but overall the SGS2 Hercules is a battery hog ...

Djapatos said:
Did u do a battery Calibration? If not this might the reason why
Click to expand...
Click to collapse
I have done a battery calibration on the phone.

Disable sync for your Exchange email. I found that to be the biggest source of drain.
Sent from my SGH-T989 using XDA App

I feel the same way my man..no matter which ROM I use, my battery drains like a mother

A lot of this can be due to signal strength. If you're in an area where you're constantly disconnecting/reconnecting to the towers, or you're just below the acceptable level for 4g, it might be switching between 3 and 4g, draining your battery.
Another thing to note, you usually want to run a rom for a couple of days before you start judging battery. It takes a while sometimes to build the dalvik-cache, and calibrate the battery. Sometimes as much as 3 full charges.
Lastly, look at what you have running on your phone. If you've tried tons of different roms, and they all drain, chances are it's an app you have that's misbehaving causing wake-lock. I'd try downloading system tuner from the market, and first going into the startup section. Remove ANYTHING that doesn't need to run in the background. You'd be amazed how many apps run at startup that really shouldn't, at least until you start them yourselves. Battery spy and cpu spy can be useful for troubleshooting what's draining your phone as well.

I drop 1% per 5 minutes or less....
Sent from my SGH-T989 using Tapatalk

mstrk242 said:
A lot of this can be due to signal strength. If you're in an area where you're constantly disconnecting/reconnecting to the towers, or you're just below the acceptable level for 4g, it might be switching between 3 and 4g, draining your battery.
Another thing to note, you usually want to run a rom for a couple of days before you start judging battery. It takes a while sometimes to build the dalvik-cache, and calibrate the battery. Sometimes as much as 3 full charges.
Lastly, look at what you have running on your phone. If you've tried tons of different roms, and they all drain, chances are it's an app you have that's misbehaving causing wake-lock. I'd try downloading system tuner from the market, and first going into the startup section. Remove ANYTHING that doesn't need to run in the background. You'd be amazed how many apps run at startup that really shouldn't, at least until you start them yourselves. Battery spy and cpu spy can be useful for troubleshooting what's draining your phone as well.
Click to expand...
Click to collapse
Thanks for the tips. I didn't give it a chance to do 3 full charges yet and I'll take a look into removing startup apps.

From the OP, it sounds like you have more than one SG2 phone available to you. Try swapping batteries to see if the same rapid discharge occurs where transferred.

audscott said:
From the OP, it sounds like you have more than one SG2 phone available to you. Try swapping batteries to see if the same rapid discharge occurs where transferred.
Click to expand...
Click to collapse
Very good thinking.
Sent from my SGH-T989 using XDA App

513263337 said:
Very good thinking.
Sent from my SGH-T989 using XDA App
Click to expand...
Click to collapse
I did try this but the issue with the draining is still there.

Have you tried changing kernels? Each phone responds differently to kernels and like some more than others. I've tried everyone and Faux's "stock" kernel works the best on my phone. It's UV, on stock speeds with a screen off profile.
To make sure your phone is actually going into deep sleep check the app CPU spy on the market. it'll tell you what clocks your phone is running through and staying at for the most time.
Also, check out System Tuner to see what rogue apps could be running constantly in the background [se Bloatware Freezer to freeze or remove apps as necessary] as well as if your 2nd core is staying offline and not staying on when it's not needed.
I would also throw your phone into airplane mode and compare the drain with no data activation to how you normally keep it to check if the 3G/4G toggling is draining your battery.

[Q] help with battery saving kernel settings

Hello. Not sure if this is the correct section or not. But here goes.
I was running rootbox 4.2.2 and kt747 kernel. Along with baconatorx something script to apply settings to second core. I was getting roughly 3 to 4 hours screen on time. Great!
Recently I installed slimbean 4.3.1 after hearing so many people say it has the best battery life. With the according 4.3 kt747 kernel. I applied the same tweaks etc but at best I can get 2 hours of screen on time. Maybe there is a new script I'm unaware of.
I use my phone frequently but not heavily. Just phone calls SMS and abit of chrome. Can anyone give me some advice. Or someone with some working settings with the combo I have? Or should I just go back to what I had?
Any help would be great.
Sent from my SAMSUNG-SGH-I747 using XDA Premium HD app

Anyone?
Sent from my Nexus 7 using XDA Premium HD app

See my posts on this page for my set and the battery life I am getting. Maybe these could help you:
http://forum.xda-developers.com/showthread.php?t=1969201&page=386

diablo009 said:
See my posts on this page for my set and the battery life I am getting. Maybe these could help you:
http://forum.xda-developers.com/showthread.php?t=1969201&page=386
Click to expand...
Click to collapse
Thanks. Just tried out your settings on my setup with the badass gov and slightly more under clock. And that's all you done?
I'm on 34% and only 1 hour 25 min screen on time.
And its 3rd on the list in battery stats.
I might be wrong but should cell stand by and phone idle be on top for battery usage? This is driving me nuts I have to carry my damn charger during the day.
I will report back after a few cycles.
Sent from my SAMSUNG-SGH-I747 using XDA Premium HD app

ronedogg said:
Thanks. Just tried out your settings on my setup with the badass gov and slightly more under clock. And that's all you done?
I'm on 34% and only 1 hour 25 min screen on time.
And its 3rd on the list in battery stats.
I might be wrong but should cell stand by and phone idle be on top for battery usage? This is driving me nuts I have to carry my damn charger during the day.
I will report back after a few cycles.
Sent from my SAMSUNG-SGH-I747 using XDA Premium HD app
Click to expand...
Click to collapse
What I am putting down below are purely from my view and my observations over the past few years.
There could be multiple issues:
1. Your battery might be getting old. On 2.8 I set the record at a whopping 7 hours display time (battery less than 6 months old). On the same ROM I was getting barely 2-3 hours (battery near to or over 18 months old) a few days before I flashed 4.1. So when I got 3h45m today, I consider that a pretty good battery.
2. You signal levels at home, the areas you roam, and at your work/school. These too kill more. Example, battery discharges slowly (when idle) at home compared to when I am at work cos of low signal levels at my work place.
3. Maybe there are too many background apps.
Example: Kik, Facebook, Google Plus. These are known battery hogs. You either uninstall these or freeze them when not needed. Your battery will thank you.
4. Kernels don't suit every phone. What works for me might not work for you. Example: Kernel of 2.8 people loved. But for me it drained battery crazy. I used Kernel C of prior version of ROM. Try out multiple, but give atleast 3 days to validate each.
5. Most importantly, do no UC too much. A phone spending 10 seconds at 1000 MHz could need 30 seconds at 800 MHz to get the same task done, and this could actually drain your battery more. For me, after using multiple phones on multiple ROMs, I found speeds between 800-1200 quite satisfactory. This is the reason my clock is normally set to 1000 as max.
6. I barely UV. UVing a little aggressively might seem to extend battery a little, but in the process it kills the phone processors and other parts. This is because they are getting strained working with lower currents than recommended. Also it is a normal practice to actually send a little more than needed currents to phone processor to avoid phone being shut off.
Our devs here who make kernels already reduce the voltage to sustainable levels to improvise on the kernel. This is also one reason why I don't bother about UVing any more.
Sorry about being lengthy and boring :victory:

diablo009 said:
What I am putting down below are purely from my view and my observations over the past few years.
There could be multiple issues:
1. Your battery might be getting old. On 2.8 I set the record at a whopping 7 hours display time (battery less than 6 months old). On the same ROM I was getting barely 2-3 hours (battery near to or over 18 months old) a few days before I flashed 4.1. So when I got 3h45m today, I consider that a pretty good battery.
2. You signal levels at home, the areas you roam, and at your work/school. These too kill more. Example, battery discharges slowly (when idle) at home compared to when I am at work cos of low signal levels at my work place.
3. Maybe there are too many background apps.
Example: Kik, Facebook, Google Plus. These are known battery hogs. You either uninstall these or freeze them when not needed. Your battery will thank you.
4. Kernels don't suit every phone. What works for me might not work for you. Example: Kernel of 2.8 people loved. But for me it drained battery crazy. I used Kernel C of prior version of ROM. Try out multiple, but give atleast 3 days to validate each.
5. Most importantly, do no UC too much. A phone spending 10 seconds at 1000 MHz could need 30 seconds at 800 MHz to get the same task done, and this could actually drain your battery more. For me, after using multiple phones on multiple ROMs, I found speeds between 800-1200 quite satisfactory. This is the reason my clock is normally set to 1000 as max.
6. I barely UV. UVing a little aggressively might seem to extend battery a little, but in the process it kills the phone processors and other parts. This is because they are getting strained working with lower currents than recommended. Also it is a normal practice to actually send a little more than needed currents to phone processor to avoid phone being shut off.
Our devs here who make kernels already reduce the voltage to sustainable levels to improvise on the kernel. This is also one reason why I don't bother about UVing any more.
Sorry about being lengthy and boring :victory:
Click to expand...
Click to collapse
Lengthy but not boring at all. ill try to add some more info on my phone and its setup.
1. my phone is less then 6 months old. 2.8 what? kernel version? 7 hours id poop a brick. lol
2. my signal strengths haven't changed at home or at work. I work outside lol however at home i do have a mountain behind me. literally a cliff side and i always got half signal since i got the phone.
3. i got the background stuff kicked. got greenify running and i have it hibernating just about everything it will let me.
4. ok this brings me back to what i was thinking originally. maybe i should just go back to what i had with rootbox 4.2.2 + kt747 kernel and scripts.... was trying to avoid this lol. 4.3 must just not jive with my phone.
5. i do have my voltages under volted 50 across the board. i have had the odd random reboot. my clocks were always either 1.2 or 1.0 ghz. never did oc or uc too much.
i will set my voltages back to stock after a few cycles.
also i run fs trim. supposed to stop lag or something. i been running it on all my devices so i figured i may as well follow suit with my s3. i also renamed mpdesion.
my standby time is still good. ill get 2 days on weekends when im not using phone much. but screen time is still less then 2 hours.
i just finished the first full charge with what u recommended. so lets see. heading out for 10 hours here soon. lets see how it does!

My bad! All my references to ROM or kernel versions pertains to Intergalatic ROM and its kernels. Sorry, I should've mentioned that.

diablo009 said:
My bad! All my references to ROM or kernel versions pertains to Intergalatic ROM and its kernels. Sorry, I should've mentioned that.
Click to expand...
Click to collapse
Thanks for your time. I've tried your settings for a few cycles. 3+ hours battery. And 2 days total. Not bad!
I have a question. I'm reading on that intergalactic ROM, and it says about certain bootloaders. One is non reverse able or something. I've read on it and I can't figure out what one to use. My phone is on telus if that means anything.
Sent from my Nexus 7 using XDA Premium HD app

ronedogg said:
Thanks for your time. I've tried your settings for a few cycles. 3+ hours battery. And 2 days total. Not bad!
I have a question. I'm reading on that intergalactic ROM, and it says about certain bootloaders. One is non reverse able or something. I've read on it and I can't figure out what one to use. My phone is on telus if that means anything.
Sent from my Nexus 7 using XDA Premium HD app
Click to expand...
Click to collapse
I used the first one (reversible):
Option A: MJ2 bootloader and MJB modem

diablo009 said:
I used the first one (reversible):
Option A: MJ2 bootloader and MJB modem
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Click to collapse
Thanks man. I downloaded the mj2 boot loader and mjb modem package. Do I flash this prior to the ROM? And say I choose to go back to slimbean, do I have to do anything to reverse this?
Sorry I just never had to do this on my nexus 7 or ace Android devices . I just wanna make sure I cover all bases. I kinda miss a two based ROM and after hearing your success with battery on it. Its obvisouly the ROM and kernel combo for me. Games I could care less about, I use my phone for texting Facebook and browser. And I go long periods without access to charger.
Thank you so much for all your assistance.

ronedogg said:
Thanks man. I downloaded the mj2 boot loader and mjb modem package. Do I flash this prior to the ROM? And say I choose to go back to slimbean, do I have to do anything to reverse this?
Sorry I just never had to do this on my nexus 7 or ace Android devices . I just wanna make sure I cover all bases. I kinda miss a two based ROM and after hearing your success with battery on it. Its obvisouly the ROM and kernel combo for me. Games I could care less about, I use my phone for texting Facebook and browser. And I go long periods without access to charger.
Thank you so much for all your assistance.
Click to expand...
Click to collapse
Yes. Following the same sequence of steps mentioned there. I too did the same.
And rest assured, once you are on this, I don't see a reason you'd even want to go back
Until this release neither we had to do all this boot loader thingy. But with the latest release Samsung did something that created all this mess.

diablo009 said:
Yes. Following the same sequence of steps mentioned there. I too did the same.
And rest assured, once you are on this, I don't see a reason you'd even want to go back
Until this release neither we had to do all this boot loader thingy. But with the latest release Samsung did something that created all this mess.
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Click to collapse
Hey. When I try to flash the boot loader and modem zip it gives me a error in twrp saying it can't load the zip.
Sent from my Nexus 7 using XDA Premium HD app

ronedogg said:
Hey. When I try to flash the boot loader and modem zip it gives me a error in twrp saying it can't load the zip.
Sent from my Nexus 7 using XDA Premium HD app
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1. Try updating your TWRP.
2. Try downloading the zip again, and verify the zip.

diablo009 said:
1. Try updating your TWRP.
2. Try downloading the zip again, and verify the zip.
Click to expand...
Click to collapse
Thanks. This wasn't my issue. I needed the i747m boot loader mk5. Intergalactic thread op directed me to it in the s3rx thread.
About to install here soon, backing up and doing a nandroid just incase.. Im going to go With kt kernel and your simple adjustments.
I see u were using 1 15 kernel. I got 1 18. Shouldn't make a difference?
What are u getting now for screen time?

ronedogg said:
Thanks. This wasn't my issue. I needed the i747m boot loader mk5. Intergalactic thread op directed me to it in the s3rx thread.
About to install here soon, backing up and doing a nandroid just incase.. Im going to go With kt kernel and your simple adjustments.
I see u were using 1 15 kernel. I got 1 18. Shouldn't make a difference?
What are u getting now for screen time?
Click to expand...
Click to collapse
That was very dangerous. Sorry, I too should've asked. Had it gone through, you could've ended up bricking your phone. Whew! Missed by a whisker!
And I flashed 1.15. I am not sure of 1.18 'cos I haven't installed it. But newer version should be better.

diablo009 said:
That was very dangerous. Sorry, I too should've asked. Had it gone through, you could've ended up bricking your phone. Whew! Missed by a whisker!
And I flashed 1.15. I am not sure of 1.18 'cos I haven't installed it. But newer version should be better.
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Click to collapse
Hey!
So I ended up leaving that tw ROM for now. I made a nandroid so I will try it again.
But I'm here to report my new setup and battery stats.
I'm running slimkat rc2 with the latest ktoonsez kernel.
I'm using your settings in ktweaker but I ended up back on koonservative gov and enabled hotplugging.
7h screen on time. WiFi on the whole time. Browsing forms reading emails.
Lag free 100%
Sent from my SAMSUNG-SGH-I747 using XDA Premium HD app

Do I need to post a screenshot for proof? Or does it really matter lol
Sent from my SAMSUNG-SGH-I747 using XDA Premium HD app

ronedogg said:
Do I need to post a screenshot for proof? Or does it really matter lol
Sent from my SAMSUNG-SGH-I747 using XDA Premium HD app
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We are all so used to getting good battery, it hardly matters anymore, unless someone posted a hard-to-believe 10 hours on stock battery.