The ASIWO Manta and Manta Pro underwater scooters have a battery capacity of 126Wh and 252Wh respectively. While most airlines allow devices with batteries up to 160Wh of power on board, some airlines have different regulations. It is important to check with your airline before traveling to confirm their regulations and guidelines, and plan accordingly. The detailed instructions regarding transportation of the ASIWO underwater scooters by air is included in the manual, and it's highly recommended that you follow it. It's also important for  you to follow the regulations of the country you are traveling to.