Store batteries charged or uncharged?
 

I just got the upgrade battery and I want to put my stock battery in a box somewhere. Should I store it fully charged or drained? Or does it matter?

Thanks

I believe regardless it will drain anyway and eventually not hold a chanrge anymore. You should use the stock battery every so often if you want it to stay "fresh".

IIRC for Lithium Ions, charge to 80% and store at room temp.