Welcome, Kgkessler. The fun way would be to fly them down to 50%, but these batteries are known to drain slowly by themselves during storage. When they reach about 50% they seem to hold for quite awhile. At least that has been the case with my batteries. I do check them often, and if they drop much below the 50% recommended storage, I just top them off. I also check my GoPro batteries when I haven't flown for awhile, and charge them if needed. I rotate them in the camera every so often, as well. Also, if you haven't done so, be sure to download the Solo manual, and study it. A lot of good info in it. I hope this helps, and good luck.