Today, after having the online map failure issues yesterday that I created the separate issue for, I had my phone fully charged last night. I unplugged it and had it with me until about noon, but had not used it for anything. I noticed that the power was down to 60% which is unheard of as I expected it to be at about 95% at that point in the day. I looked into the power usage and Oruxmaps was by far the largest. I had closed Oruxmaps yesterday and had not started it today, yet it was still doing something in the background. I think that it may have still been trying to download online maps or something and having failed was still trying over and over again. I went into the Settings | apps | Orux and Forced Stop. That seems to have stopped the power drain. I rebooted the phone. Now the online maps are working properly again.