hi, i wanna store my macbook pro for a month and more..! so what do i have to do with the battery in order to keep it safe and never drain while i'm storing it..?! P.S: am not going to use my MBP during the period of storing..! thank u!
The 50% is from Apple's battery page. That's only recommended for storage for 6+ months however. There's another page which only identifies whether batteries stored for varying periods of time will still hold a charge.
In the end there is no way to prevent the battery from draining, you can't dodge physics. As far as the precise %age to store it at I don't have the answers...