148187
5.5 Environmental and safety characteristics
5.5.1 Vibration
No fire, No explosion, No leakage, The maximum mass loss ≤0.1%
After standard fully charge, cell shall be attached to a vibration table directly and subjected to vibration that consists of 10 Hz to 55 Hz
to 10 Hz at the speed of 1Hz/min in 90~100mins.The total excursion of the vibration is 0.8mm (0.060 inches). The cell shall be vibrated
in each direction along axis of the cylinder and the vertical directions of axis of the cylinder.
UL1642
5.5.2 Drop test
No fire, No explode
The cell is charged following the standard charge method; The cells is dropped three times from a height of 1.0 m onto a concrete floor,
to obtain impacts in random orientations, at 25°C±2°C;Observation of 1 h.
IEC62133
5.5.3 Overcharge test
No fire, No explode
The cell is discharged following the standard discharge method. Apply a 8.4V power supply and a 2C charge current for 24hrs.
UN38.3
5.5.4 Forced Discharge test
No fire, No explode
Cell shall first be discharged according to standard discharge method, then the cell is subjected to a reverse charge at 1C for 90 min at
25±2°C
IEC62133
5.5.5 130°C hot oven test
No fire, No explode
The cell is charged following the standard charge method. After charging the cell is put in the oven. And then the oven temperature will
be ramped at 5°C per minute to 130°C and held at 130°C. When the temperature of the cell reach 130°C, the cell is maintained in the 130°C
oven for a maximum of 30 minute or until a fire or explosion is obtained, whichever comes first.
GB31241
5.5.6 Crush test
No fire, No explode
After charging a cell following the standard charge method, the cell shall be crushed between two flat surfaces. The direction of the crus-
hing force shall be vertical to axis of the cylinder. The crushing force is to be applied by a hydraulic ram with a 32mm diameter piston.
Crushing force is approximately 13 KN. Once the maximum pressure has been obtained it is to be released.
UL1642
5.5.7 Short circuit test at room temperature
No fire, No explode
Cell shall first be charged according to standard charge method, and then cell is to be short-circuited by connecting the positive and
negative terminals of the cell with copper wire having a maximum resistance load of 80 ± 20mΩ. This test is done at room temperature.
Monitor the cell temperature while testing. The cell is continuously discharged until the cell case temperature has returned to be 10°C
less then peak temperature.
UL1642
5.5.8 Short circuit test at 55°C
No fire, No explode
Cell shall first be charged according to standard charge method, and then cell is to be short-circuited by connecting the positive and
negative terminals of the cell with copper wire having a maximum resistance load of 80±20mΩ. This test is done at 55±5°C. Monitor the
cell temperature while testing. The cell is continuously discharged until the cell case temperature has returned to be 10°C℃ less then
peak temperature.
UL1642
5.5.9 Low Pressure text
No fire, No explosion, No leakage, The maximum mass loss ≤0.1%
Cell shall first be charged according to standard charge method, and then cell is to be stored at an absolute pressure of 11.6 kPa for six
hours at ambient temperature.
UL1642
Note: All above safety tests will be conducted at 25°C±2°C except where specified differently. Use proper ventilation with
protective equipment.
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