Air freight lithium battery UN38.3 (undot) detection



In order to ensure the safety of air transportation and meet the transportation needs of customers for goods containing lithium battery, according to the relevant provisions of the dangerous goods rules of the International Aviation Association, the operation specification of rechargeable lithium battery, namely the test of UN38.3 (undot), is formulated.




Product range



All kinds of lead-acid batteries (such as lead-acid batteries for automobile starting, fixed lead-acid batteries, small valve controlled sealed lead-acid batteries, etc.)

Various secondary power batteries (such as batteries for power vehicles, batteries for electric road vehicles, batteries for electric tools, batteries for hybrid vehicles, etc.)

Various mobile phone batteries (such as lithium-ion batteries, lithium polymer batteries, NiMH batteries, etc.)

Various small secondary batteries (such as laptop batteries, digital camera batteries, camera batteries, various cylindrical batteries, wireless communication batteries, portable DVD batteries, CD and MP3 player batteries, etc.)

Various primary batteries (such as alkaline zinc manganese battery, lithium manganese battery, etc.)



UN38.3 test items



T. 1 height simulation test

Under the condition of pressure ≤ 11.6kpa and temperature 20 ± 5 ℃.

T. 2 thermal test

Under the conditions of 75 ± 2 ℃ and - 40 ± 2 ℃, the high and low temperature impact test shall be carried out. The storage time in the limit temperature shall be ≥ 6h, the high and low temperature conversion time shall be ≤ 30min, and the impact test shall be carried out for 10 times. The storage time at room temperature (20 ± 5 ℃) shall be 24h, and the total test time shall be at least one week

T. 3 vibration test

In 15 minutes, a reciprocating logarithmic sweep sinusoidal vibration was completed from 7Hz to 200Hz, and in 3 hours, 12 vibrations in three-dimensional direction were completed;

T. 4 impact test

150g, 6ms or 50g, 11ms half sine impact, 3 times in each installation direction, 18 times in total;

T. 5 external short circuit test

Under the condition of 55 ± 2 ℃ and external resistance < 0.1 Ω, the short circuit lasts for 1h after the battery temperature returns to 55 ± 2 ℃.

T. 6 impact test

9.1kg weight falls from 61 ± 2.5cm on the battery with 15.8mm round bar, and the surface temperature of the battery is detected.

T. 7 overcharge test

The battery is overcharged for 24 hours under the condition of twice the maximum continuous charging current and twice the maximum charging voltage.

T. 8. Forced discharge test

The battery is connected to 12V DC power supply in series, and the maximum discharge current is used for forced discharge.



Qualification criteria



(a) In tests t.1 to T.6, no disintegration or fire occurred.

(b) In tests t.1, t.2, and T.5, effluents are not toxic, flammable, or corrosive.



（1） No exhaust or leakage can be seen through visual inspection.

（2） No exhaust or leakage occurred that resulted in weight loss exceeding that shown in table 38.3.4.7.1.

（c） In tests T.3 and T.6, the effluent is not toxic or corrosive.

（1） No exhaust or leakage can be seen through visual inspection.

（2） No exhaust or leakage occurs that results in weight loss exceeding that shown in table 38.3.4.7.1



Packaging requirements



1. Unless installed in equipment (such as mobile phones, cameras, walkie talkies, laptops, etc.), batteries and primary batteries must be separately packed to prevent short circuit and be packed in solid outer packaging.

2. Unless installed in the equipment, if each package contains more than 24 primary batteries or 12 batteries, the following requirements must also be met:

1) Each package must be marked to indicate the lithium battery contained and the special measures to be taken when the package is damaged.

2) Each ticket must have attached documents to explain the lithium battery in the package and the special measures to be taken when the package is damaged.

3) Each package must be able to withstand the drop test of 1.2m in any orientation without damaging the battery or cell in the package, without changing the position of the battery in the package, so that the battery and battery (or primary battery and primary battery) contact each other, and no battery leaks out of the package.

4) Unless the lithium battery is installed in the equipment, the gross weight of each package shall not exceed 30kg.



Conditionality



The lithium battery and lithium battery pack delivered can be transported as non restricted goods (non dangerous goods) if all the following conditions are met. If any of the following conditions cannot be met, the operation shall be in accordance with the requirements of un3090 or un3091 for the collection and transportation of dangerous goods

（1） , restrictions on lithium content

1. For metal lithium or lithium alloy primary batteries, the lithium content shall not exceed 1g; for lithium ion primary batteries, the lithium equivalent content shall not exceed 1.5g.

Note: primary battery is also called battery cell.

2. For metal lithium or lithium alloy batteries, the total lithium content shall not exceed 2G, and for lithium-ion batteries, the lithium equivalent content shall not exceed 8g.

Note: the above "lithium content" refers to the amount of lithium metal on the anode of lithium metal or lithium alloy battery. For lithium-ion batteries, the "lithium equivalent content" in grams is calculated by multiplying 0.3 by ampere hour of rated capacity.

For example, if the rated capacity of a mobile phone lithium-ion battery is 800MAH (800MAH), its "lithium equivalent content" is: 0.3 x 0.8 (ampere hour) = 0.24g.

（2） . meet UN test requirements

Each type of primary battery and battery shall be tested and proved to meet all requirements of 38.3, Part 3, UN Manual of transport tests and standards for dangerous goods.