Thanks for your sharing. But as far as I know, there are some deviation when test a lipo battery with its wire, and there will also be deviation in the test equipment, which will lead to inaccurate results. I'm not very sure with that
There is also a need to discharge to the storage voltage when the battery is not used. My 4s 1800mah lipo cannot be charged because I did not discharged to the storage voltage for a 3 months storage.
No, you need to pay attention to whether the lipo battery capacity has increased and whether the weight exceeds the drone's capacity. If not, it will increase your flight time