Best game but is this a glitch – Five Nights at Freddy's Review

So when I first played the game and beat it which was last week. I then wanted to help my brother. But then I realized the power was going out faster. Which is weird because I was doing the same thing that what I did with my I pad. But in night 2 I was only at 2 percent. In my iPad I was at 50 percent at 2 am so I confused. But is this a glitch.
Review by Munestminecraft on Five Nights at Freddy's.