Classification of the waterproof grade

For different customers, some specific fields, such as underwater detection robots, cleaning robots, etc., have certain requirements on the waterproof level of the battery, so how is the waterproof level divided? Manly can provide waterproof lithium battery for you.

There are 9 levels of international industrial standard waterproofing, which are represented by 0-8 respectively
0: no protection
1: Water droplets will not affect the shell
2: When the shell is tilted to 15 degrees, the water droplets into the shell have no effect
3: Water or rain has no effect on the shell from the 60 degree corner
4: The liquid splashed into the shell from any direction has no harmful effect
5: Rinse with water without any harm
6: Can be used in the cabin environment
7: Can be resistant to immersion in a short time (1m)
8: Long-term immersion in water under certain pressure