Did something stupid (I think) and stored by batteries at full capacity over winter. I have not done any firmware upgrades from 3.04 so they all showed being pretty full when checked them. Probably will be familiar to some of you: when I did first flights on two batteries this year at one point the drone lost power, as in was no longer able to lift higher, I was able to land, and the batterys were puffy after the flight, like they were not ready for the power discharge. I have a feeling I ruined the batteries with this stunt. Am I right? This probably was my lack of researching on how to store batteries over winter. I have 3 batteries that I have not touched and I wonder how can I make sure they will work properly. I have the imax b6 charger, any tips or guides on how to properly proceed?