I've been using the S Pen Pro since it launched, and one thing has always bugged me about it: there's no documented way to turn it off. That's it. That's the post. Why can't you turn it off after you've turned it on? If I don't use it for a few days, the battery's gone and I have to charge it again.
I can definitely understand how frustrating this may be. Give this a shot for me. Go to Settings > Device > S Pen. Then toggle the Turn off pen detection switch to ON.
