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IEC 62133 For 5200mAh Power Bank/5000mAh Power Bank/4400mAh Power Bank/2600mAh Power Bank
IEC 62133-2012 Secondary cells and batteries containing alkaline or other non-acid electrolytes -Safety requirements for portable sealed secondary cells,and for batteries made from them, for use in portable applications
7.Specific requirements and tests (nickel systems)
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Charging procedure for test purposes |
7.1 |
Unless otherwise stated in this standard, the charging procedure for test purposes is carried out in an ambient temperature of
Prior to charging, the battery shall have been discharged at |
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Continuous low-rate charging (cells) |
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a)Requirement:A continuous low-rate charge shall not cause fire or explosion. b)Test:Fully charged cells are subjected for 28 days to a charge as specified by the manufacturer. c)Acceptance criteria:No fire, no explosion. |
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Vibration |
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a) Requirements:Vibration encountered during transportation shall not cause leakage, fire or explosion.
b) Test:Fully charged cells or batteries are vibration-tested under the following test conditions and the sequence in table 3. A simple harmonic motion is applied to the cells or batteries with an amplitude of Step 1: Verify that the measured voltage is typical of the charged product being tested. Steps 2-4: Apply the vibration as specified in Table 3. Step 5: Rest cell for 1 h, and then make a visual inspection. c) Acceptance criteria:No fire, no explosion, no leakage
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Moulded case stress at high ambient temperature (batteries) |
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a) Requirement Internal components of batteries shall not be exposed during use at high temperature. b) Test
Fully charged batteries are exposed to a moderately high temperature to evaluate case integrity. The battery is placed in an air circulating oven at a temperature of c) Acceptance criteria No physical distortion of the battery case resulting in exposure of internal components. |
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Temperature cycling |
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a) Requirements Repeated exposure to high and low temperatures shall not cause fire or explosion. b) Test according to the following procedure and the profile shown in Figure 1.
Fully charged cells or batteries are subjected to temperature cycling (-
Step 1: Place the cells or batteries in an ambient temperature of
Step 2: Change the ambient temperature to
Step 3: Change the ambient temperature to
Step 4: Change the ambient temperature to Step 5: Repeat steps 1 to 4 for a further four cycles. Step 6: After the fifth cycle, store the cells or batteries and check after a rest period of at least 24 h. NOTE This test can be performed in a single chamber whose temperature is changed or in three separate chambers at three different test temperatures. c) Acceptance criteria No fire, no explosion, no leakage. |
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Incorrect installation (cells) |
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a) Requirements The incorrect installation of a single cell in a multi-cell application shall not cause fire or explosion b) Test
Fully charged cells are evaluated under conditions in which one of the cells is incorrectly installed. Four fully charged single cells of the same brand, type, size and age are connected in series with one of the four cells reversed. The resultant assembly is connected across a resistor of 1 Ω until the vent opens or until the temperature of the reversed cell returns to ambient temperature. Alternatively, a stabilized c) Acceptance criteria No fire, no explosion |
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External short circuit |
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a) Requirements Short-circuiting of the positive and negative terminals shall not cause fire or explosion. b) Test
Two sets of fully charged cells or batteries are stored in an ambient temperature of by connecting the positive and negative terminals with a total external resistance of 80 mΩ± 20 mΩ. The cells or batteries remain on test for 24 h or until the case temperature declines by 20 % of the maximum temperature rise, whichever is the sooner. c) Acceptance criteria No fire, no explosion. |
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Free fall |
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a) Requirements Dropping a cell or battery (for example, from a bench top) shall not cause fire or explosion. b)Test
Each fully charged cell or battery is dropped three times from a height of c) Acceptance criteria No fire, no explosion. |
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Mechanical shock (crash hazard) |
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a) Requirements Shocks encountered during handling or transportation shall not cause fire, explosion or leakage. b) Test
The fully charged cell or battery is secured to the testing machine by means of a rigid mount which will support all mounting surfaces of the cell or battery. The cell or battery is subjected to a total of three shocks of equal magnitude. The shocks are applied in each of three mutually perpendicular directions. At least one of them shall be perpendicular to a flat face. For each shock the cell or battery is accelerated in such a manner that during the initial 3 ms the minimum average acceleration is 75 gn· The peak acceleration shall be between 125 gn and 175 gn. Cells or batteries are tested in an ambient temperature of c) Acceptance criteria No fire, no explosion, no leakage. |
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Thermal abuse (cells) |
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a) Requirements An extremely high temperature shall not cause fire or explosion. b) Test
Each fully charged cell, stabilized at room temperature, is placed in a gravity or circulating air-convection oven. The oven temperature is raised at a rate of c) Acceptance criteria No fire, no explosion. |
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Crushing of cells |
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a) Requirements Severe crushing of a cell (for example, during disposal in a waste compactor) shall not cause fire or explosion. b) Test Each fully charged cell is crushed between two flat surfaces. The force for the crushing is applied by a hydraulic ram exerting a force of 13 kN ± 1 kN. The crushing is performed in a manner that will cause the most adverse result. Once the maximum force has been applied, or an abrupt voltage drop of one-third of the original voltage has been obtained, the force is released. A cylindrical or prismatic cell is crushed with its longitudinal axis parallel to the flat surfaces of the crushing apparatus . To test both wide and narrow sides of prismatic cells, a second set of cells is tested, rotated 90°around their longitudinal axes compared to the first set. c) Acceptance criteria No fire, no explosion. |
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Low pressure (cells)
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a) Requirements Low pressure (for example, during transportation in an aircraft cargo hold) shall not cause fire or explosion. b) Test
Each fully charged cell is placed in a vacuum chamber, in an ambient temperature of c) Acceptance criteria No fire, no explosion, no leakage |
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Overcharge |
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a) Requirements Charging for longer periods and at a higher rate than specified by the manufacturer shall not cause fire or explosion. b) Test A discharged cell or battery is subjected to a high-rate charge of 2.5 times the recommend charging current for a time that produces a 250 % charge input (250 % of rated capacity). c) Acceptance criteria No fire, no explosion. |
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Forced discharge (cells) |
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a) Requirements A cell in a multi-cell application shall withstand polarity reversal without causing fire or explosion. b) Test A discharged cell is subjected to a reverse charge at 1 It A for 90 min. c) Acceptance criteria No fire, no explosion. |
8.Spec ific requirements and tests (lithium sy stems)
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Charging procedures for test purposes |
8.1
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(This charging procedure applies to subclauses other than those specified in
Unless otherwise stated in this standard, the charging procedure for test purposes is carried out in an ambient temperature of
Prior to charging, the battery shall have been discharged at |
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(This charging procedure applies only to After stabilization for 1 to 4 hours respectively at ambient temperature of highest test temperature and lowest test temperature, as specified in Table 4 (currently for lithium cobalt oxide), cells are charged by using the upper limited charging voltage and maximum charging current, until the charging current is reduced to 0.05It A. using a constant voltage charging method. Table 4- Condition of charging procedure
If a cell's specified upper and/or lower charging temperature exceeds values for the upper and/or lower limit test temperatures of Table 4, the cell shall be charged, and if applicable tested, at the specified values plus
NOTE NOTE 2 New chemistries systems will be incorporated in the standard when new data becomes available. |
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Continuous charging at constant voltage (cells) |
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a) Requirement A continuous charge at constant voltage shall not cause fire or explosion. b) Test Fully charged cells are subjected for 7 days to a charge as specified by the manufacturer. c) Acceptance criteria No fire, no explosion, no leakage |
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Moulded case stress at high ambient temperature (battery) |
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a) Requirement Internal components of batteries shall not be exposed during use at high temperature. b) Test
Fully charged batteries, according to the first procedure in |
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