Why do I have a massive battery drain on my Galaxy S5?

[AC Question]

I wish I could post a picture here but I don't know how to. One app that I used that temporarily solved the problem was Roehsoft RAM Expander. But being the dumbass that I am, I tried to delete a virus from my phone and that landed me in a boot loop after turning the phone off. Now I got the horrendous battery life again. The battery drains from 100% to 0% in 2 and a half hours with very light use.

 

[belodion]

What do your battery usage stats indicate as the main users of charge after such a discharge?

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[macroman64]

Nothing suspiscious, Display, Android OS, Chrome are the top users. But the thing is , I know for certain that there is a glitch /bug that is making the phone think it has a smaller battery than it actually does.