Battery manufacturing

Accurate moisture and concentration measurements

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Industrial scale battery manufacturing is done in almost clean-room type of environments, where ambient conditions are stable and under control, with ultra-low humidity environment maintained for safety, yield, and efficiency. This is because the manufacturing includes handling chemicals that are sensitive to moisture and can pose a security risk if moisture level or humidity rise. 

Strict process control is a must throughout the manufacturing process as well as contamination prevention and cleanliness. 

Vaisala’s measurement solutions help manufacturers to produce more high-quality products in a more sustainable and cost-effective way. Efficient inline measurement data contribute to optimizing processes, which brings down production costs. Our trusted products tolerate the most extreme conditions and aggressive chemicals. 

Lithium battery manufacturing

Lithium-ion battery manufacturing process is sensitive to moisture. Too high humidity in the production room may cause the lithium to react with the humidity and transform into lithium hydroxide and hydrogen. Low relative humidity and precise humidity control is a must in industrial scale manufacturing.  Challenging production environment demands a water vapor detection instrument with reliable performance and strong resistance to process byproducts that may be present in the atmosphere.

Vaisala offers a chemically resistant polymer dew point sensor that is actively manipulated to achieve long term reliability with very little measurement drift. Calibrated devices using this sensor are available as low-cost transmitters or fully configurable field instruments.

Lead acid battery manufacturing: sulfuric acid concentration

Lead-acid and gel batteries are commonly used for automobiles and electric vehicles that need long durability.

Sulfuric acid (H2SO4) is used to activate the lead elements of the lead battery to get the power effect. Acid is prepared by mixing with water. Correct acid concentration levels are critical to ensure the successful power activation effect of the lead-acid battery.

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Lead acid battery manufacturing: Optimizing curing chambers

In industrial scale manufacturing, batteries are dried and cured in curing chambers to create even quality products with expected capacity and long lifecycle. The key parameters in curing chambers are relative humidity (RH) and temperature. The RH in drying chambers during curing process is high, and requires accurately controlled water, steam and hot, dry air injections.

Vaisala’s Indigo520 with HMP7, the relative humidity and temperature probe offers fast response in conditions with high humidity and rapidly changing humidity conditions. Utilize chambers to the full and decrease downtime in production.


  • The Indigo520 offers visualized information of drying chambers allowing fast decision making and rapid response
  • Quality plates and optimized permeation
  • Optimized natural gas and water consumption
  • Probes with vapor and pressure proof construction
  • Connectivity to PLC with MODBUS RTU RS-485

Battery manufacturing related products

DM70 Hand-Held Dewpoint Meter

Handheld Dewpoint Meter DM70

Handheld Dewpoint Meter DM70 for spot-checking applications and field calibration offers accurate and fast measurement for industrial dew point applications, such as compressed air, metal treatment, additive manufacturing as well as food and plastics drying.

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