Hi. I have minimal notifications set up. I charged my iPad Pro battery to 100 percent last night and with no activity all night anticipated being at 100 or very close, but I was down to 83. I've been using it on and off all day and it seems to be lasting pretty well, but was concerned about the big drop through the night. Before leaving iPad last night, I did close all applications running in the background. Its new and under warranty, do I need to be concerned Mark?