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release time:2024-04-24 Hits: Popular:AG11 battery
Calculation method of lithium content of 12V 18650 lithium ion battery
In daily life, each of us uses 18650 lithium ion battery products every day, such as mobile phones, notebooks, 12V lithium batteries, etc., and these batteries are used for charging. What is the lithium element in lithium batteries? How is lithium content calculated?
In addition, many people may not know that the Civil Aviation Administration of China has a requirement for the transportation of lithium batteries. According to the relevant requirements in the "Aviation 18650 lithium ion battery Specifications":
1. When a 18650 lithium ion battery in a machine or device is transported as a suitcase, the volume of the lithium metal composite or lithium aluminum alloy rechargeable battery cannot exceed 2 grams.
2. The rated mechanical energy of 18650 lithium ion battery cannot exceed 100wh.
3. For large and small lithium batteries with a rated mechanical energy of more than 100WH or less than 160WH, the shipper must allow the shipper to load the battery, but the total weight cannot exceed 2 pieces.
4. Mechanical equipment and equipment equipped with internal lithium batteries can be placed in suitcases for checked luggage, or can be placed in portable suitcases, leaving only one portable one.
Calculation method of lithium content of 12V 18650 lithium ion battery:
If the current amount (mAh) is marked on the 18650 lithium ion battery, the net weight of the rechargeable battery can be calculated by dividing the current amount by 1000 and multiplying by . For example, the current capacity of a rechargeable battery is 5000Mah, the lithium content is 5000Mah/1000X=g, and the lithium element is less than 3g, which meets the testing standards.
Calculation method of allowable differential kinetic energy:
(1) If the working voltage (v) and allowable capacity (ah) of the rechargeable battery are known, the rated mechanical energy can be calculated based on the rated mechanical energy evaluated. For example, a 12v20ah 18650 lithium ion battery has a rated kinetic energy of 12×20=240; generally speaking, the rated current and time tolerance volume are marked on the rechargeable battery.
(2) If the 12v 18650 lithium ion battery only displays mAh (milliamp-hour), then the ampere-hour (Ah) can be calculated by dividing the value by 1000. For example, when the nominal voltage of a 18650 lithium ion battery is 3000 mAh, the rated kinetic energy is: 3000mAh/1000=2Ah, ×2Ah=11.1Wh.
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