What is the current best information on this? I know there are some old threads but there has been a firmware update since then to fix a battery problem so it’s hard to know what is current.
Recently saw this response from DJI: https://www.reddit.com/r/dji/comments/uc36zd/dji_mini_2_battery/i68svw6/
Hello, there. Overcharging or overdischarging will damage the battery.
It is recommended to charge and discharge the battery to 72% once every three months to improve battery performance. If the battery level is below 72%, it is recommended to charge it until it is 72% before storing. If the battery level is above 72%, the battery will discharge automatically after 5 days to 72%.
Long-term storage of batteries:During storage, the battery will deplete at an extremely low speed as is normal for lithium batteries. When the battery level is extremely low, batteries may over-discharge. To maintain battery activity and extend battery use life, it is recommended to discharge the battery to 40% - 65% when it will not be used for 10 days or longer and store it in a dry and cool place (22°C - 28 °C). Check the battery level every three months and then let the battery completely discharge and then recharge it. Pay attention to battery maintenance during daily use.