After doing some flying with my MPP a couple of days ago and giving my Wife some lessons we were flying behind my house and I ran one of my batteries down to 11% before putting the UAV away for the day. For the last couple of days the weather has been awful here in Ga. as it has in most of the U.S. My question is should the batterie be charged back up and allowed to discharge on it's own or is it good to leave it at this level. I have 3 batteries that I use in rotation so it could be a few days before it gets regularly charged and used again. I really want to keep them at optimum because I would like them to last me aa long time.