How to calculate the lithium content of a lithium battery

According to the relevant provisions of the aviation transport specification for lithium batteries issued by the Civil Aviation Administration:

1. When the battery in the backup battery or equipment is transported as luggage, the lithium content of the lithium metal or lithium alloy battery shall not exceed 2g;

2. The rated energy of lithium-ion battery shall not exceed WH;

3. For large lithium-ion batteries with rated energy greater than WH and less than WH, the battery can be carried with you only after being approved by the aviation operator, but the carrying quantity cannot exceed two.

4. A device containing a lithium battery can be placed in checked luggage or hand luggage, and a spare lithium battery can only be placed in hand luggage.

Calculation method:

1. Rated energy calculation method:

A. If the nominal voltage (V) and nominal capacity (Ah) of the battery are known, the rated energy value can be calculated:

Wh = V x Ah

Nominal voltage and nominal capacity are usually labeled on the battery.

B. If only the mAh is marked on the battery, divide the value by 1000 to get the ampere hour (Ah ).

For example, if the nominal voltage of a battery is 3.7 V and the nominal capacity is 760 mAh, the rated energy of the battery is:

760 mAh limit 1000 = 0.76Ah

3.7V × 0. 76Ah = 2.9Wh

2. Calculation method of lithium in lithium battery:

If the battery is marked with current (mAh), you can divide the data by 1000 and multiply it by 0.3 to obtain the number of grams of lithium in the battery.

For example, if the battery current is 4600 mAh, the lithium content is 4600 mAh limit 1000X0.3 = 1.38 grams, which is less than 2 grams and meets the safety standard.