Can lithium batteries be brought on board?

　　1. Power supply and lithium-ion batteries cannot be mailed. They have to be put in hand luggage and carried on the plane. Due to the increasing number of accidents caused by rechargeable batteries in recent years, many rechargeable batteries are not planned safely and in some cases may lead to the risk of sparks or explosions. As a result, lithium-ion batteries cannot currently be mailed to any flight. Whether a lithium-ion battery can be carried depends on the device and its watt-hour (WH) rating (for rechargeable lithium-ion polymer batteries) or lithium capacity (LC) (for non-rechargeable lithium-metal batteries). At airport security, if the security officer thinks your lithium-ion battery is not in compliance with regulations, it will be confiscated

　　2. We can follow two approaches: all removable spare batteries and standalone lithium-ion batteries, such as those used in phones, cameras and tablets. As long as they can be removed, we should take them with us. Non-removable lithium-ion batteries, such as iphones, MacBooks and other electronics that cannot replace lithium-ion batteries. In theory, passengers can mail the products, but airport security checks the rated security of the bag

　　3. Rules vary from airline to airline. Typically, each airline determines the number of lithium-ion batteries each passenger can carry based on their capacity. Take Cathay Pacific. Each passenger is limited to 20 spare batteries with a capacity of less than 100 watt-hours (WH) of 2 grams of lithium (LC), and up to two spare batteries with a capacity of 100 watt-hours to 160 watt-hours. For large lithium-ion batteries above 160wh, they must be declared and transported as goods in accordance with IATA Dangerous Goods regulations, and cannot be carried as luggage

　　4. Take out your lithium-ion battery and check it. You'll find the words MAH and V are usually printed on them. Milliampere-hour is "milliampere-hour". We need to convert it to watt-hours. The battery capacity of some devices will be listed directly as "wh", but usually the battery capacity unit is "Mah". Converting "MAH" to "wh" is calculated as follows: e (wh) =q (MAH) ×V (V) 1000 is calculated based on the battery of the Samsung Galaxy S3. The battery has a capacity of 2,100 mah and a voltage of 3.8 volts. If converted to "wh", then 2100x3 81000=7.98Wh.

　　5. Each lithium-ion battery needs to be packed in a container to ensure that the positive and negative terminals of the battery do not short-circuit. It is best to wrap electrodes in original retail packaging or tape. In addition, passengers can place lithium-ion batteries in insulated battery cases or plastic bags. Do not carry lithium ion batteries on the machine

　　6. Small vehicles equipped with lithium-ion batteries include electric two-wheelers, Hot Wheels, balance cars, unicycles, other balance scooters and mini Segways. Since December 9, 2015, Cathay Pacific Airways and Cathay Pacific Dragonair have been banned from carrying lithium-ion battery small vehicles and related components in all cabins and hand luggage due to their flammability. If a passenger brings such goods to the airport at check-in, the goods will be rejected and the passenger will be responsible for handling the relevant contraband before boarding. Neither Cathay nor Cathay Dragon will store the cargo because it is flammable.

　　7, ordinary daily use of AA alkaline batteries can not be sent to the cabin. Batteries must be worn in hand luggage and must have adequate short circuit protection. You can pack the electrodes in their original retail packaging, wrap the electrodes with tape, or store each battery in a separate plastic bag or protective case, and turn off the batteries in all electronic devices (such as cameras, cell phones, and bookkeepers) to prevent accidental activation in baggage at the check-in room.

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