Unused, new ones are theoretically supposed to be in a long term hibernation state, sealed in a retail box, that should not require any maintenance, designed for long term storage, from the factory until sale and placed into service, which could...
I don't know that it takes all that to keep them stored but I plan to use *all* batteries in a slow rotation cycle rather than try to squirrel away a set. If I have long term batteries for storage, they are packed away inside an unopened drone kit.
Both of above mentioned sellers I used shipped with FedEx, package was here in 3 days, no hurdles whatsoever. But maybe I just got lucky, so don’t take it for granted
I think that's another aspect to look for when using eBay to purchase your high end equipment. Regardless what they charge, look for sellers who clearly points out they ship using some sort of Express or Expedited service, maybe it a SpeedPack...
I bought all my drones from with_us, but he started charging $200 for shipping (assuming to offset tariff cost) also I purchased my RC Pro 2 from highendhaveen, they charged $49 for expedited shipping (it was here, in Dallas, from Korea in 3...