Electronic Products Testing Professional Organization

Applicable product range:

Lithium ion or lithium metal battery

Exporting countries:

Export to any country by air transport, sea transport

Application Project:

UN38.3 test report: air transport appraisal report; shipping appraisal report; 1.2m free fall

Testing standards:

UN38.3

Certification period:

2-3 weeks

Do you need factory inspection:

No need

Shipping method:

1.PI965 (Lithium battery sold separately)

Such as: lithium ion or lithium polymer batteries and batteries, mobile power, etc.

label:

2.PI966 (Lithium battery and equipment package)

Such as: mobile phones, cameras, etc.

3.PI967 (lithium battery installed in the device)

Such as: tablet, Bluetooth audio, headphones, etc.

4.PI968 (Lithium metal battery shipped separately)

5.PI969 (Lithium metal battery and equipment package)

6.PI970 (lithium metal battery installed in the device)

Lithium battery operation label

Size :120*110mm or 100*100mm or 105*74mm

Lithium battery operation label on the outer box

The ninth category of dangerous goods identification
Minimum size: 100*100mm

Marks.

Cargo labels only
Size: 120 * 110

UN38.3 certification test project

T.1 height simulation test

· Store the battery and battery at a temperature of 20±5°C and an atmospheric pressure of not more than 11.6kpa for not less than 6 hours.

• The open circuit voltage after the sample test should be no less than 90% of the open circuit voltage before the test. This requirement does not apply to fully discharged batteries and cells.

The sample (battery) should be free of liquid leakage, no venting, no disintegration, no cracking, and no ignition.

T.2 thermal shock

· Battery storage conditions are as follows:

· One temperature cycle is 72±2°C (6h) — -40±2°C (6h)

·The maximum temperature conversion interval is 30min

· Repeat 10 cycles

• After the cycle is over, the battery is left at 20 ± 5 ° C for 24 hours.

• The open circuit voltage after the sample test should be no less than 90% of the open circuit voltage before the test. This requirement does not apply to fully discharged batteries and cells.

The sample (battery) should be free of liquid leakage, no venting, no disintegration, no cracking, and no ignition.

T.3 vibration test

·The battery cell and battery are firmly mounted on the vibration table (the table top)

• The vibration is in the form of a sine wave, increasing from 7 Hz to 200 Hz, then decreasing back to 7 Hz for one cycle, and one cycle lasting 15 minutes for logarithmic forward transmission.

• Logarithmic sweep: keep the maximum acceleration of 1gn from 7 Hz until the frequency is 18 Hz, then keep the amplitude at 0.8 mm (total offset 1.6 mm) and increase the frequency until the maximum acceleration reaches 8 gn (frequency is about 50 Hz) ), keep the maximum acceleration at 8gn until the frequency increases to 200 Hz.

• One of the directions of vibration must be the vertical sample polarity, and each cell is cycled 12 times from three mutually perpendicular directions, 3 hours in each direction for 9 hours.

• The open circuit voltage after the sample test should be no less than 90% of the open circuit voltage before the test. This requirement does not apply to fully discharged batteries and cells.

The sample (battery) should be free of liquid leakage, no venting, no disintegration, no cracking, and no ignition.

T.4 impact test

• Secure the surface of all fittings for each cell and battery sample with a stable bracket.

• For each cell or battery with a half-sinusoidal acceleration of 150gn peak for 6 milliseconds, large batteries and large battery packs must withstand a maximum acceleration of 50gn and a half-sine wave impulse with a pulse duration of 11ms.

• Each battery or battery pack is subjected to three impacts in the positive direction of three mutually perpendicular battery mounting orientations, followed by three impacts in the opposite direction, for a total of 18 impacts.

• The open circuit voltage after the sample test should be no less than 90% of the open circuit voltage before the test. This requirement does not apply to fully discharged batteries and cells.

The sample (battery) should be free of liquid leakage, no venting, no disintegration, no cracking, and no ignition.

T.5 external short circuit test

· Keep the test environment temperature at 57±4°C, so that the external temperature of the battery or battery sample reaches 57±4°C.

• Short-circuit the positive and negative samples of the sample with a total resistance loop of less than 0.1 Ω. The external temperature of the sample is restored to 57 ± 4 ° C and remains short-circuited for more than 1 hour.

• The cell or battery must be observed for an additional 6 hours to reach a conclusion.

· During the test and within 6 hours, the battery or battery sample

- The external temperature does not exceed 170 ° C

- No disintegration, no cracking and no fire.

T.6 impact test

Impact (for cylindrical batteries with a diameter of not less than 18 mm)

· Place the battery or polymer cell for the test sample on a flat, smooth surface

• After placing a crossbar of 15.8 mm in diameter across the middle of the cell, an object of mass 9.1 kg was dropped from the height of 61 ± 2.5 cm toward the sample.

• For specimens subjected to impact, the longitudinal axis should be parallel to the flat surface and perpendicular to the longitudinal axis of the curved surface 15.8 ± 0.1 mm across the center of the specimen. Each sample was subjected to only one impact.

·The maximum surface temperature of the battery or battery should not exceed 170 ° C

Within 6 hours after the end of the test, the cells and polymer cells should be free of disintegration and no ignition.

T.6 extrusion test

Extrusion (for prismatic, pocket, coin/button batteries and cylindrical batteries less than 18 mm in diameter)

• The battery or component battery is squeezed between two planes, and the pressing force is gradually increased, and the speed at the first contact point is about 1.5 cm/sec. Squeeze continues until one of three things happens:

- The applied force reaches 13 KN ± 0.78 KN

- The battery voltage drops by at least 100 millivolts

- The battery is deformed to more than 50% of the original thickness.

• Prismatic or bagged batteries should be pressed from the widest side. Button/coin-shaped batteries should be pressed from their flat surfaces. The cylindrical shape should be pressed from a direction perpendicular to the longitudinal axis.

·The maximum surface temperature of the battery or battery should not exceed 170 ° C

Within 6 hours after the end of the test, the cells and polymer cells should be free of disintegration and no ignition.

T.7 overcharge test

· Charge the sample with 2 times the maximum continuous charging current recommended by the manufacturer

· The minimum voltage of this test is:

• If the manufacturer's recommended charging voltage does not exceed 18V, the minimum charging voltage for this test should be twice the manufacturer's rated maximum charging voltage or the smaller of 22V.

· If the recommended charging voltage exceeds 18V, the minimum charging voltage for this test should be 1.2 times the maximum rated charging voltage of the manufacturer.

• The test lasts for 24 hours at an ambient temperature of 20 ± 5 °C.

The test sample shall be free from disintegration and non-ignition during the test and within 7 days after the test.

T.8 forced discharge test

• At a temperature of 20 ± 5 ° C, a single cell is connected to a 12 V DC power source for forced discharge. This DC power supply provides the initial current for each cell to the maximum discharge current specified by the manufacturer.

• The specified discharge current is obtained by a load of suitable size and power connected in series on the test cell. The forced discharge time (hours) of each cell is the rated capacity divided by the initial current (amperes).

The test sample shall be free from disintegration and non-ignition during the test and within 7 days after the test.

1.2m drop (after packaging)

The packaged lithium battery was dropped from 1200mm (the lowest point of the battery) to 18-20mm thick hardwood board at 20±5°C (the board was laid on the concrete floor).

The test sample does not ignite during the test and after the test and does not explode.

Judging test eligibility criteria

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

(2) In tests T.1, T.2 and T.5, the effluent is not a toxic, flammable or corrosive substance.

a. No visual observation of exhaust or leakage;

b. No exhaust or leakage resulting in weight loss exceeding those shown in Table 38.3.4.7.1.

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

a. No visual observation of exhaust or leakage;

b. No exhaust or leakage resulting in weight loss exceeding those shown in Table 38.3.4.7.1.

(4) The 1.2m drop is from the positive and negative directions of X, Y and Z, and it is dropped once in each direction without leakage, no disintegration, no burning, no explosion, no damage.

Application

1. Determine customer information;

(1) Which city's air products are exported by customers;

(2) Whether the customer's products are shipped separately or in conjunction with other products.

2. Fill in the UN38.3 application form;

3. Provide battery specifications and other information.

Quotation

Determine the test time and corresponding fees based on the information provided.

Pay

After confirming the quotation, the applicant signs the application form and service agreement and pays the project fee.

Step 4:

Sample

The customer sends the sample.

Test

The ESTL laboratory performs a full set of UN38.3 tests on the products requested according to the relevant testing standards.

Report

The test passed and the report was completed.

Step 7:

Certification

The project is completed, and the appraisal certificate is issued.