I'm new to the forum and haven't figured out how to efficiently search yet for my battery issue so I apologize in advance if this is a redundant thread. My P2V+ recently started experiencing sudden in flight discharge of the battery causing it to begin a controlled descent. The P2V+ with check out normally during pre flight, take-off normally but within about 15 seconds the battery icon on the app starts flashing red and it begins to descend. I use the P2V+ generally of fly real estate photos and to be honest maybe fly it once a month or so. I didn't notice a couple of posts here not to store fully charged batteries which exactly what I don't do. I bought this P2V+ new from DJI about 20 months ago. Have I ruined these batteries already? Is there another issue I could look into?