Are Lithium Batteries Allowed On Airplanes. But if you are unsure contact the manufacturer. With your airline approval passengers are allowed to carry up to two spare larger lithium-ion batteries 101 to 160-watt hours or lithium metal batteries of two to eight grams.
However you must remove the lithium battery before you put the bag in the overhead locker. Most of the power banks that are allowed on a flight need to be carried in your hand luggage and should be under a certain capacity. For everyones safety we have rules for bringing lithium batteries on your flight.
Batteries for your electric razor are also allowed in carry-on or checked luggage.
One spare battery not exceeding 300 watt hours or two spare batteries not exceeding 160 watt hours each are permitted in carry-on bags. The battery must stay with you at all times. For a lithium metal battery whether installed in a device or carried as a spare the limit on lithium content is 2 grams of lithium metal per battery. Batteries for your electric razor are also allowed in carry-on or checked luggage.
