Are lithium cells OK in checked luggage if packed properly?
We don’t recommend it. You may pack one cell per Acousonde in checked luggage, as long as such cells are “in or packaged with” each associated Acousonde, and that this is done in a manner to prevent short circuits and with strong outer packaging (US DOT CFR Title 49, Part 172.102, Special Provision 188). Guidelines at safetravel.dot.gov are even more restrictive: they only allow a lithium battery to be checked if it is inside its associated device. Regardless, we can’t recommend you check the Acousonde any more than you would check a laptop computer; and since you cannot legally check any number of lithium batteries without also checking an equal number of Acousondes, we urge that you simply do not pack any lithium batteries or Acousondes in your checked luggage.
