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Air travel with Lithium ion batteries
FAA has some regulations for using and carrying lithium ion batteries on aircraft. Those regulations may vary from time to time. To learn more about lithium batteries, their restrictions, and how to tell what size they are, go to
Batteries Carried by Airline Passengers FAQ (faa.gov)
According to those regulations:
1. Carry-on baggage only: Spare (uninstalled) lithium ion batteries must be carried in carry-on baggage only. When a carry-on bag is checked at the gate or at plane side, all spare lithium batteries must be removed from the bag and kept with the passenger in the aircraft cabin. The battery terminals must be protected from short circuit.
2. Size limits: Lithium ion (rechargeable) batteries are limited to a rating of 100 watt hours (Wh) per battery. These limits allow for nearly all types of lithium batteries used by the average person in their electronic devices. With airline approval, passengers may also carry up to two spare larger lithium ion batteries (101-160 watt hours). This size covers the larger after-market extended-life laptop computer batteries and some larger batteries used in professional audio/visual equipment.
3. Quantity limits: None for most batteries – but batteries must be for use by the passenger. Batteries carried for further sale or distribution (vendor samples, etc.) are prohibited. There is a limit of two spare batteries per person for the larger lithium ion batteries described above (101-160 watt hours per battery).
However, some airlines may have their own rules and some airline may not allow you use any battery on airplane at all. So you may also need to contact with your airline to find out whether they just follow FAA rules or have their own rules, which normally are even more strict .
Batteries must be protected from damage.
Battery terminals (usually the ends) must be protected from short circuit (i.e., the terminals must not come in contact with other metal). Methods include: leaving the batteries in their retail packaging, covering battery terminals with tape, using a battery case, using a battery sleeve in a camera bag, or putting them snugly in a plastic bag or protective pouch.
To learn more about lithium batteries, their restrictions, and how to tell what size they are, go to
http://SafeTravel.dot.gov
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