18650 rechargeable battery lithium 3.7v 3500mah
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18650 rechargeable battery lithium 3.7v 3500mah
18650 rechargeable battery lithium 3.7v 3500mah

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Test standards for lithium-ion batteries

source:Industry News release time:2024-06-14 Hits:     Popular:AG11 battery

  

  1. Continuous charging: The fully charged battery cell is charged at 20 ° C plus or minus 5 ° C. Charge continuously for 28 days according to the manufacturer's regulations, without catching fire, exploding, or leaking liquid.

  2. Vibration standard test: A fully charged battery cell with a temperature of 20 ° C plus or minus 5 ° C, an amplitude of 0.8MM, 1 Hz/min, between 10-55Hz, tested in three perpendicular directions, with each axis tested for 90 minutes. No fire, no explosion, no liquid leakage.

  3. Temperature cycling: A fully charged battery cell is placed in a battery test box and subjected to the following cycling tests. A. 75 ± 2 ℃ for 4 hours B.) 20 ± 5 ℃ for 2 hours C.)- 20 ± 2 ℃ for 2 hours D) 20 ± 5 ℃ for 2 hours E Repeat 4 times from A to D. F) Store for 7 days before testing after 5 cycles.

  4. External short circuit: Fully charge the battery cells at 20 ± 5 ℃ and 55 ± 2 ℃, short circuit with a total resistance less than 100 milliohms, without ignition or explosion.

  5. Free fall: Fully charge the battery cell at 20 ± 5 ℃, place it from a height of 1 meter in any direction on a cement ground to obtain an impact, continuously for 3 times, without ignition or explosion.

  6. Mechanical vibration: Fully charge the battery cell at 20 ± 5 ℃, with a maximum acceleration of 125-175gn, and vibrate three times in three perpendicular directions with the same force. No fire, no explosion, no liquid leakage.

  7. High temperature: A fully charged battery cell should be left in a 130 ± 2 ℃ environment for 10 minutes without catching fire or exploding!

  8. Compression of the battery cell: 20 ± 5 ℃, apply approximately 13Kn of force on two planes to compress the fully charged battery cell, so that the longitudinal axis of the battery cell is parallel to the plane. Once the maximum pressure is reached, it is immediately released. No fire, no explosion.

  9. Low voltage: The fully charged battery cell should be maintained at 20 ± 5 ℃ and 11.6Kpa for 6 hours, without ignition, explosion, or liquid leakage.

  10. Overcharging: 20 ± 5 ℃, after discharging the battery cell, the charging current is equal to Irec in heavy rain, and the charging time is 2.13CZ/rec, which is equal to the manufacturer's recommended constant charging current. The unit is amperes. No fire, no explosion!

  11. Forced discharge: At 20 ± 5 ℃, discharge the discharged battery cell with a constant current of 1ItA for 90 minutes. No fire, no explosion!


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