Does the previous owner doing the unbinding need physical access to the drone during the unbinding, or can they do it without physical access to the drone itself?
"Standard" RID is the Built in RID that comes with a drone, and Strap on or added RID Modules or boards do not count.
If the manufacturer includes RID as an operating function of the Drone it is unlawful to "switch it off".
Get yourself a Hanatora charger with a storage charge option.
After you use the Battery, Charge it to "storage" (60%) and if you don't use it, check it every month and charge it back up to storage (60%) if necessary.
On the day of flight charge...
DJI warranties all their batteries to 200 cycles. After the 200th charge, you will be notified by your drone to replace the battery. I currently have 4 batteries over 200 charges. One of them is at 237. Monitor the cell health make sure they are...