[T-Mobile, Samsung Galaxy SIII] Chaebi69:
Resolving Battery Issue in RLS15

Contrary to what Jarule51082 for those that can't get out of the Samsung Logo unless Developer's Option is chosen. I'm making a similar tips for those that can access the phone after selecting Custom.

I have managed to get rid of the drain. It really is just a matter of finding the right kernel that will work together with this ROM. I have tried Stock, Xone, Deviant and Ktoonsez. While they work great on other ROMs I've played with, it didn't do anything to rid the battery drain on the Galaxy Mod. But take note that one of the kernels mentioned worked just fine to some of our users in this Forum. So my suggestion is to go back a few pages and read the suggested kernels that were reported to be working. I guess each phone have their own slight differences.

Back in RLS14.1, we used the Faux123 Kernel, I don't remember which version was included in 14.1, but that's the Dec. 30 release. So, go ahead and download the 4.1.1 JB release and you should be fine (either Mainline or Ultimate is fine, I'm using Ultimate). Also, it won't matter what choices you pick during the Aroma setup. I have tested it to work with or without V6 Settings, and the result has been great for my first cycle (14h 50m on battery, 2h and 16m screen time with 53% battery).

So:

-Wipe Cache, Dalvik, Factory Reset and System. I actually went as far as wiping Data, but I think that's an optional thing.

-Flash ROM. Select whatever you want in the Aroma. But beware that selecting both Note 2 Gallery/Camera and Android 4.2 Gallery/Camera will result an installation flaw. For instance, when I first did this, I got the Note 2 Camera/Gallery but only the 4.2 Gallery and not the Camera. So, flash the 4.2 Gallery/Camera separately later instead. To those that need to download it, you can get it from this thread.

-And then, for the time being: select the Stock Kernel.

-Let the phone setup and leave it for 5 minutes. or so. Set it up and make sure you go to the Lock Screen Options and disable the Ripple Effect if you're using a different Lock screen to prevent yourself from being locked out because of the Ripple + Screen Rotation + Other Lock Screen bug. Better be safe than sorry since you'll be rebooting quite often.

-Go back to Recovery and Wipe Cache and Dalvik. Flash your desired Kernel, let it sit for 2 minutes.

-You're done.

Also, I've seen some newcomers with other battery draining problems so here's a tips I picked up there and there. Some of these tips are already well known to most users but who knows:

-Starting off with the most basic: Turn off GPS when you don't need it, set screen brightness to automatic and Power Saving doesn't really have to be on (I think others will have different opinion about this).

-Facebook users: set your Refresh Intervel to "Never". Your notifications will still be instant, but at least the app will not be updating feeds. Plus, you can refresh it yourself when you're browsing.

-E-Mail (besides Gmail), same this as above. But I believe the Interval can only be set to 3 hours at a time. But then again, do you really check your e-mails that often? Besides, you can refresh it manually as well.

-Download BuildProp Editor by JRummy in the Play Store. Scroll all the way down to wifi.supplicant_scan_interval. Set the value to 600+ (I have mine at 3000). You don't need the phone to be scanning that often for WiFi networks since you manually search (when you need it) and set it up yourself anyway.

-Set the V6 settings as recommended in OP's first page of the thread using the Terminal. Although Pure said that the V6 settings will help or it may not, so you'll be the judge over this. Also, the Battery Calibration works wonder.

I hope this helps people resolve their battery draining issue!