Recently I noticed a steep drop in my device's battery reserves. Upon reviewing battery usage statistics in the Settings menu it looks like OneDrive is, for some reason, using 21% of my battery's charge, even when the app isn't actively being used, or even launched. That's more than the OS, more than the screen - more than everything else on the device.
While I've been fairly impresses with Microsoft's Android offerings, this is unacceptable. To see if it makes a difference to battery usage I've gone ahead and turned photo/video autoupload off. Next step is to remove the app from the device completely.
Please let us know when this is fixed. I have disable auto upload of photos and this has reduced my battery drain.