[Galaxy S III Q&A, Help & Troubleshooting] steek-bamboo:
/!\FOUND ONE FIX FOR SCREEN OFF BATTERY DRAIN - BOTTOM OF THE POST/!\​

Hello, and thank you for reading my thread.

1. Introducing of me and my problem

I am the proud owner of a SGS3, but I'm not english so excuse my poor level of speaking. Hope you can understand me. My problem may seem quite familar, but after hours of reading I still did not find anyone with the same problem than me (I read on german, french and english - especially XDA - forums without any actual answer). Like I allready said I have a SGS3 but I had a SGS2 and a Note 1 before. Being a "Flash-addict", and tired of TouchWizz, I flashed a lot of roms, and of course CM. And here is the problem : on every CM installation I have I have terrible battery issues. Here you may think "Pfff... another n00b who didn't read the fu***** manual. (RTFM -- joke -- understood ?) So let's introduce part II :

2. My config'

If my problem is in a new thread and not in a general "Problem" thread, it is because it seems very 'unique' to me. I have :

- GPS totally off (localisation OFF in settings)

- WiFi constant refreshing OFF too

- NFC and AndoBeam OFF even if I read it has no impact on battery life

- I ALWAYS enter multi-tasking and close all apps

- WiFi and Data OFF (Data always OFF because I only have 50MB of mobile internet / month (Viva la france !) - WiFi only ON at home )

- Brightness on AUTO

- CPU governor on 'PEGASUSQ' or 'POWERSAVE' depending on usage

- Talking about usage :

- SMS and Facebook

- Apollo (sorry but I can't live without a7x or black sabbath)

- Bash (u know that weird app that eats your time)

- Internet via Chrome or default browser (at home)

- That's all (+ some games at home)

3. What I have tried

On SGS2 :

- Buying a new battery (talking about battery do you know how do be 1000000% sure you have an original battery ? Some people say about the 'Made in Taiwan / Made in Korea" etc... but I have friends why an original SGS4 w/ battery made in Korean and some w/ battery made in Japan...)

On GN :

- Buying a new battery

On SGS3 (my current one, as you may guess)

- I read it is better not to use Titanium Backup so I tried without (sooooooo long restoring all apps from Play Store)

- I read extSDcard can cause problems so I put it away - do you know where you can unmount extSDcard in CM settings ? I know this option exists in TouchWizz based roms.

- I tried all the placebo solutions like wiping battery stats and so on...

- I installed Boefla (sorry for misspeling) Kernel and used an "Extreme Battery Yank" presset.

- Always upgrading to last CM Nightly (and re-flashing Boeffla Kernel)

- Flashing Mods for battery life

- See last part for SCREEN OFF fix !!!

4. Extra Notes :

- I have no battery issues on Stock ROMs and most of Sammy based roms

- I use a 1A battery charger, Samsung Official or very well done Chinese Export

- I have an extBattery with 2A charging possibility if needed.

- I really enjoy CM11 and really wanted to use it as daily-usage ROM (and not another KK rom like SuperNexus)

- My phone heats a little bit more than on Sammy Roms

- Current Widget says my battery status is Good (not dammaged battery)

- Oh and I have the stock 2100 mAh Battery

Best stats reached : ~5 % in one night (pretty good for me) and 3% in 30 minutes video with Wifi on, samsung headsets, AUTO brightness, PowerSaving governor and synchronisation and all the stuff off.

When playing games like "Worms 2 Armaggedon" or just watching videos on YouTube in HQ by charging the phone with my 1A charger, the battery level does not move (+1 % per 40 minutes)

Thank you for reading my thread and being so awesome in modding our devices !

Edited : Solutions found​

Applied this solution (from Reddit) :

another method for same fix is this one :

Here is an additional fix (thanks to ivek81cro)

I will upload images and links as soon as I am authorized

After this "fix", I had my phone SCREEN OFF two hours without loosing any percentage, with GSM on, WiFi, BT and NFC off. (just like during night)

Still looking for solutions for SCREEN ON, will tell you !