Can I Carry A Battery On A Plane. Lithium batteries with more than 100 watt hours may be allowed in carry-on bags with airline approval but are limited to two spare batteries per passenger. Batteries and Checked Bags.

Passengers can carry most consumer-type batteries and portable battery-powered electronics devices for their own personal use in carry-on baggage. Any damaged or defective batteries should not be taken on the plane in any luggage which may seem obvious now. Eventually bringing Flashlights more than 7 inches will not be.
6 rows If your airline approves it you can bring a maximum of 2 larger lithium-ion batteries that are.
When a carry-on bag is checked at the gate or at planeside all spare lithium batteries and power banks must be removed from the bag and kept with the passenger in the aircraft cabin. If a power tool has an installed lithium-ion battery you can pack that in checked luggage. You cant pack them in checked baggage. Allowed in carry-on baggage in equipment or spares as well as in checked baggage.
