The battery was kept at 70 ° C (158 ° f) for 7 hours in a dry chamber with complete convection circulation.
Then carefully take out the sample and restore it to room temperature, and observe that the surface of the sample must be free of damage, such as the battery shell is not broken or electrolyte leakage.
Result: no explosion, no fire, no liquid leakage. In addition, the battery shell will not burst, and the cell or any protective device cannot be perforated or leaked.

Put the battery in a blast incubator at 70 ° C ± 2 ° C for 7h, then take out the sample and restore it to room temperature.
Results: the sample Shell did not undergo physical deformation that exposed the internal composition.

Put the battery in a blast incubator at 70 ° C ± 2 ° C for 7h, then take out the sample and restore it to room temperature.
Results: the sample Shell did not undergo physical deformation that exposed the internal composition.