I recently bought a Samsung Galaxy 6 Edge, with which I'm very happy. I've installed DejaOffice for Android on it, and have transferred all my relevant data over from my old HTC One 7. However, I was a bit surprised to see a system notification from the "Smart Manager". It said that "...the device has detected apps that have used an unusual amount of power while the screen is turned off." On checking, it turned out to be DejaOffice, and it had consumed 2.58% of the battery power.

Is this anything to be concerned about?