Check the battery cell appearance. There should be no deformation or cracks in appearance and the surface should be flat, dry, free from damage or dirt, etc., and should have clear and correct signs. or cracks in appearance and the surface should be flat, dry, free from damage or dirt, etc., and should have clear and correct signs.
Check the battery cell polarity. Polarity should be correct and clearly marked with positive and negative signs.
Check the battery cell size and weight. The dimension and weight of the battery should meet the technical requirements.
Dimensions: (length (173.6±1) × width (48.5±1) × height (154.8±1.5) (including polarity pole height)) mm
Weight: (2.65±0.05) kg
Fully charge the battery cell, and discharged at 1I1 to the discharge termination voltage. And repeated the process 5 times. When the range of the results of the three consecutive tests is less than 3% of the rated capacity, the test can be terminated in advance, and the last three test results are taken at average value. The discharge capacity of the battery shall not be lower than the rated capacity, and at the same time shall not exceed 110% of the rated capacity, and the initial capacity range of all test samples shall not be less than 5% of the average initial capacity.