Thank you belodion.
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Even when I'm doing somethin in settings it drain really really fast, don't know what is the problem, like I said, 1% per 2 minutes, sometimes even worse, only good thing is that on stand by battery is amazing but only then. I used facebook for few times(now deleted), messenger not often but something like 2 hours, few videos on youtube and some research on chrome. Today I used it maybe for one hour on messenger, and listening music for about 30-40minutes, also when I tried switch to ART it drained for 2-3% when it was loading, and of course when I switched ot back to dalvik again drained 2-3%, really don't know what to do, everything is great about this phone, only battery is miserable, even my lumia 820 had better battery then this LG G3.
Appreciate your answer and I hope that u could help me about this or someone else.