So why wouldn't You execute damn single-word command "powertop" and paste results here? It doesn't matter, if You do it on new or old battery, it just shows results of system wakeups, etc.

Usage:
on termina, execute "powertop". Immediately lock screen and put phone to rest without touching it - powertop will sleep for 11 seconds, then collect data for 30 seconds. So, after minute, You can safely turn it on, then copy output and paste it here.

Of course, phone should be idle, without any other things opened - ideally, in flight mode (but GSM doesn't affect results much).

/Estel