Long-term storage: What is your exact protocol when leaving the station unused for a month?

Obviously, I won't leave the station plugged into the wall acting as an EPS while I'm out. I want to pack it away safely, but I want to make sure I don't accidentally degrade the LiFePO4 cells by storing it at the wrong voltage.

I've read conflicting advice online, some say to store it at 100% just in case of an emergency when you get back, while others say to drain it to exactly 50%.

For those who have stored their units away in a closet for several weeks or months, what exact battery percentage do you leave it at? Also, do you just unplug it and walk away, or is there a specific sequence to physically force the unit into a "deep sleep" mode before a long vacation?