Conditions
These batteries must be individually protected to prevent short circuits. Spare batteries must be individually protected (in original retail packaging or by otherwise insulating terminals e.g. by taping over exposed terminals or placing each battery in a separate plastic bag or protective pouch) to prevent short circuits. You must gain approval from your airline before flying.
Quantity limit
No more than two spare batteries to be carried or more than two power banks total per person may be carried. Airlines may be more restrictive in the total battery and power bank quantities permitted for carriage - contact the airline in advance.
Airline approval required
Can be carried-on
Can't be checked-in