Originally Posted by ASMI1
good news bro, this morning i flashed stock gb 2.3.6 jpla1; the battery drained little bit fast but when it went down to 10% the low battery warning popped up!! so i plugged the phone to the charger and it starts charging normally...is this a good sign?
what i know is that lithium batteries don't require any calibration or it's just jb (stock jplsb)??
btw thanks for your reply
My compliments on your English by the way, you write far better than a lot of English people.
Right, so the plot thickens.....
Was your previous ROM ICS or JB and was it a Samsung stock image or a custom ROM based on stock?
Stock ICS and JB were notorious battery drainers.
GB was much better with battery drain.
So it's no surprise you're seeing slower drain with GB.
But that doesn't answer the question of the abnormal drain on your Note.
Start with resetting your battery stats in recovery mode.
You're right about the battery not specifically needing calibration, but sometimes the Note gets a little confused about the battery level and doesn't seem to read it correctly.
I have reset the battery stats before when my battery has done odd things, it generally helps.
It's best to charge fully then reset the stats in recovery and let it settle for 2-4 hours (you can still use the Note while the battery is settling).
The battery indicator will show a massively reduced % after resetting the stats, and then the % will creep up as you use it - which is an interesting phenomenon to observe!!
Once the battery has settled, let the battery drain down to 20% at least before you charge it fully again.
This should fix any problems your Note has reading the correct charge level from the battery.
It's a while since I've used CWM (which I'm assuming you're using for recovery with GB), I think the battery reset is in the advanced settings, it's pretty obvious when you find it. (I've been using TWRP for too long to remember where things are in CWM!!!).
Then I would seriously consider installing Better Battery Stats (It is free to XDA users from the XDA thread).
Take a look at the BBS thread, there are numerous instances of devices with abnormal battery drain because of partial wakelocks etc.
Post your logs on the BBS thread and ask for help.
The experts on that thread are awesomely helpful.
The next steps are a little more drastic, e.g. replacing your USB daughter board and battery.