I personally store my Mini 3 Pro batteries at the 2-1/2 lights level (2 of the 4 lights lit and a third one flashing). And I check them monthly to ensure they aren't self-discharging. You can also buy fireproof Li-Ion storage bags and boxes which in theory will protect your house if a battery decides to go up in flames.

Understanding the Context

I don't know how they had these drones, but I just got the Air 3S from Ebay and a seller called "DJI Authorized Store". It showed in stock and shipping within 24 hours from Florida, so I took a chance and a week later I received my drone with NO hassles with Customs or anyone else. Ordered on 10/31, received it yesterday, 11/7. The "DJI Official Store." seller is definitely not a scam.

Key Insights

When ordering from that seller, the products are shipped directly from the DJI Store. How do I know this? Well, I ordered from them before. Here's my Mavic Pro order (note the name of the seller): And here's my FedEx tracking information showing my order being fulfilled directly by the ...