How many lithium batteries can I take on the plane?

How many lithium batteries can you carry with you? The author will explain that on November 29th, when we were on a business trip, we found lithium batteries among dangerous goods on the plane. The specific rules are as follows: a 100-watt-hour lithium battery may carry a battery with a lithium content of less than 2 grams. 100-160 watt-hour batteries can be mailed. The use of 160 watt-hour batteries is not allowed. The airport stipulates that lithium batteries larger than 160WH are not allowed to be mailed. So how big is a 100Wh lithium battery? What is a watthour? We will explain in the form of a question and answer in the next article. How to deal with the problem of airport security lithium battery 1. 100 watt-hour refers to the lithium battery of a single item. Or is it lithium batteries for all items? Answer 1 refers to all items, such as 56 watt-hours for laptop batteries, 30 watt-hours for cameras, and 10 watt-hours for mobile phones. In fact, this is close to the upper limit. Question 2: What are watt hours and how many milliampere hours? Milliampere hours multiplied by battery voltage divided by 1000 equals watt hours. Many people have come into contact with the milliampere hour, a unit of electricity, in mobile phone advertisements. Some media modified the size without knowing it, and misspelled milliampere to milliampere. For example, this phone has a 2000 mAh battery. Milliampere hour is the unit of electric charge, you can understand it as the total number of electrons. But if the total energy we want to know is that we also need to know the energy map of each electron, suppose we have 2000mah electrons, and each electron has a voltage of 2v, so we have 4000 kilowatt-hours of energy, which is equal to 4 kilowatt-hours. energy. If each electron only has a voltage of 1V, then we only need 2 watt-hours of energy in our hands. Question 3. Why does the FAA have to use watt-hour units instead of power units? Answer three, considering that the battery will be blown up, the strength of the blasting effect is directly related to how much energy there is, so it is necessary to specify the limits of an energy unit. For example, we can find a 1000mah battery. The power is very small, but if the battery voltage reaches 200V, the energy is 200 watt-hours. This is more than twice the FAA requirement. Question 4. Why do mobile phones use milliampere-hours and other units to describe the battery instead of power consumption? Answer 4. There are two units of mobile phone lithium batteries, just because many people don’t understand the concept of watt-hours. Another reason is that mobile phone lithium batteries are 90%. The polymer battery is 3.7V, and there is no battery series-parallel combination, so it is just that the power will not cause too much mistakes, and the other 10% is 3.8V polymer. Although the voltage is different, the difference is only 3.7 And 3.8, the negligence is not great. Therefore, it is not a problem to use milliampere to describe the battery in the promotion of mobile phones. Question five, how do you know the battery capacity of products such as notebook digital cameras, and how much? Answer five: because these products have different battery voltages, they are clearly marked with energy units of watt hours, and low-end notebook batteries are about 30-40 watt hours. 60 watt hours, high-end 80-100 watt hours. The working time of a digital camera ranges from 6 watts to 15 watts. If you don't remember what I just said, you can refer to this list. Suitable for mobile phone battery or power bank. The power of the mobile power supply is between 2000 and 10000 mA. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: Brief analysis of battery fault diagnosis and troubleshooting