If that is the case, why would you ever tell the insurance company that it was slightly swollen before flight? It would otherwise be impossible for them to prove!
Don't deny your own claim. LOL!
DJI batteries are known for swelling based upon age rather than usage. The alarmist posts above are well-intended but inaccurate. The biggest concern with DJI batteries that swell is a potential disconnection during flight when they heat up...
Operational swelling that is 'slight' is not that big of a risk factor. I think you are overly dramatizing the scenario. As I mentioned previously, if the swelling is more advanced, then yes, the batteries should not be used.
Which is a good thing to do. Remember, there are different types of swelling. The 5 batteries I alternatively use over several years have slight swelling from time to time and that is dependent on weather and how hard I work the drone. The...