According to regulations, a laptop, two mobile phones with a total of 4 batteries and a power bank generally do not exceed the limit. It should be judged by the size of the computer battery.
Notes: Regarding the rated energy of lithium batteries for commonly used portable electronic devices, mobile phones are generally 3-10Wh, SLR cameras are generally 10-20Wh, camcorders are typically 20-40Wh, tablets or laptops are typically 20-40Wh. mainly 30 to 100 Wh, generally no more than 100 Wh.
Detailed information
When traveling with lithium batteries, you must strictly comply with airline regulations: lithium batteries cannot be registered and must be carried in hand luggage. And the lithium contentlithium metal batteries should not exceed 2 grams.
The Civil Aviation Administration of China issued the “Notice on Strengthening the Safe Management of Air Transportation of Lithium Batteries in Passenger Baggage”. The notice states that when traveling on a civil aviation aircraft, personal use of lithium or lithium-ion battery cells or battery-based consumer electronic equipment and spare batteries may be carried on board with baggage, but the lithium content of lithium metal batteries must not exceed 2 grams and the rated energy value of lithium-ion batteries must not exceed 100 Wh (watt hours).
For devices that exceed 100 Wh but do not exceed 160 Wh, they must be approved by the airline and can be installed in checked baggage or carry-on baggage. Lithium batteries exceeding 160Wh aret strictly prohibited. Devices containing lithium batteries may be carried in checked or carry-on baggage, but spare lithium batteries may only be carried in carry-on baggage.
It is prohibited to transport or check large lithium batteries or electronic devices exceeding 160 Wh.
References:
Do dry batteries need to be registered on the aircraft?
< p>30-40%. According to the official website of lithium iron phosphate battery, the solid content of lithium iron phosphate battery is 30-40%. Lithium iron phosphate battery refers to a lithium ion battery using lithium iron phosphate as the cathode material. Cathode materialss lithium ion batteries mainly include lithium cobalt oxide, lithium manganate, lithium nickel oxide, ternary materials, lithium iron phosphate, etc.Dry batteries do not need to be checked on the plane and can be taken with you, but you must follow the relevant regulations of the Civil Aviation Administration of China.
In accordance with the clear regulations of the Civil Aviation Administration of China regarding passengers carrying batteries, passengers are not allowed to carry lithium batteries in their checked baggage. They can only carry them with them or register them, as well as protection and registration. Lithium battery insulation measures must be met. Pack them individually and do not carry dry batteries containing foreign objects. Passengers can take apsimilar consumer electronics, such as watches, computers, cameras, cell phones, laptops, video cameras, etc., containing lithium or lithium-ion batteries for personal use. Backup batteries must be separately protected to prevent short circuits and must only be discharged. You can take it with you on the plane in your hand luggage and you cannot check it in. There are also lithium metal or lithium alloy batteries with a lithium content of no more than 2 g, and lithium-ion batteries with a total lithium content of less than 8 g. Passengers may carry lithium-ion batteries of the same mass and with a total weight of more than 8 grams but not more than 25 grams. And they must be separately protected to prevent short circuits, so that they can be taken on the plane in hand luggage.