Hi siriuset, welcome! You can let the
MA hover for a while in the backyard or equivalent till the batteries go down to about 60%, that is what I do I discover I have a full battery and won't be able to fly. Now, some times, it is understandable that you won't even have the opportunity or time to do that. Luckily DJI batteries are intelligent in that they will be able to auto discharge right about 7 days after if they have been sitting unused. It is ok to rely on this smart feature once in a while as long as you don't make a habit of it. Bottom line, discharge batteries to about 60% manually if you can, if you can't do that, the auto discharge function will take care of it for you. Also, don't forget it is equally bad to let the batteries sit around on a low voltage for a long time. Try to store them charged at 30% - 60% of their capacity.