I've got two batteries for my H480 that I obtained used. For a handful of flights, they performed normally, 10-12 minutes of flight time (with Real Sense) before low battery warning. Recently, after just a few minutes of flight, I get a low battery warning and proceed to land immediately. Using a X2-AC plus charger to balance charge. Wondering if running the discharge program, and then fully charging again might do anything helpful. No excess heat or puffiness seen. When they operated normally, they were slightly warm after landing, per usual operations with my other batteries. Tried reading up on LiPo batteries, but most of the tech stuff is beyond my tiny brain... Doomed to discard, or is this worth a try? If it's to be discard, seems like keeping one for ground uses might be a good idea - calibration, hookup to PC, etc. - can run out of juice quickly for those ops without consequence.