(Marposs: Auburn Hills, MI) -- Marposs, a leader in measurement, inspection, and test technologies, has announced its new automatic machine for leak testing of sealed batteries in high production environments. This patent pending system is based on electrolyte tracing, which makes it possible to perform the leak test after it has been filled with the electrolytes and completely sealed.

Perfect sealing is necessary to prevent the loss of electrolytes, often composed of flammable solvents which can produce toxic substances if they come in contact with humidity in the air. Additionally, it is equally important to prevent moisture and other sources of external contamination from entering the cell, which can compromise functionality.

Current state-of-the-art leak testing systems for battery cells use helium as a tracer gas in the vacuum chamber, which requires testing prior to filling with the electrolyte and sealing of the cell. Therefore, the tightness of the final seal cannot be totally verified. The ability of the Marposs system to test after filling and sealing provides higher quality verification of batteries being used in electric vehicle (EV) production.

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