Die TSA sagt dazu:
Please contact your airline to see if they accept hoverboards or drones as carry-on or checked baggage. Many do not.
Drones, Airwheels, airboards, solowheels, hoverboards, balance boards, balance wheels, and mini-Segways are considered portable electronic devices with lithium ion batteries.
The allowance for passengers to have portable electronic devices in their checked or carry-on baggage is determined by the size (Watt-hour rating) of the lithium ion battery as follows:
1) Where the lithium ion battery does not exceed 100 Wh passengers may have these devices in either checked or carry-on baggage.
2) Where the lithium ion battery exceeds 100 Wh but does not exceed 160 Wh passengers may have these devices in either checked or carry-on baggage, but approval of the airline is required.
3) Where the lithium ion battery exceeds 160 Wh the device is forbidden from being in either passenger checked or carry-on baggage.
Even if an item is generally permitted, it may be subject to additional screening or not allowed through the checkpoint if it triggers an alarm during the screening process, appears to have been tampered with, or poses other security concerns. The final decision rests with TSA on whether to allow any items on the plane.