Environmental Test Chambers for Battery Safety Testing | Canrud

An environmental test chamber precisely controls temperature and, in many models, humidity within a sealed enclosure, allowing battery researchers to evaluate how cells and packs perform and behave safely across the full range of conditions they might encounter in real-world deployment.

Why Environmental Testing Matters for Batteries

Battery performance and safety margins both shift meaningfully with temperature — capacity, internal resistance, and even the risk profile for thermal runaway all change between a -20°C cold-climate scenario and a 60°C hot-storage or high-ambient-temperature scenario. Testing only at room temperature leaves a significant blind spot for any application that will actually operate across a realistic temperature range.

Types of Environmental Testing

• Temperature cycling — repeatedly cycling between temperature extremes to assess mechanical and electrochemical stress from thermal expansion and contraction.
• High-temperature storage testing — evaluating capacity fade and gas generation during extended storage at elevated temperature.
• Low-temperature performance testing — measuring usable capacity and power output at cold temperatures.
• Humidity exposure testing — assessing corrosion risk and seal integrity under humid conditions, particularly relevant for pack-level enclosures.
• Combined temperature and humidity profiles — simulating realistic field conditions that combine multiple environmental stressors simultaneously.

How Environmental Testing Fits Into a Complete Safety Program

Environmental testing typically complements electrical and mechanical safety testing rather than replacing it, since a cell's response to abuse conditions like overcharge or short-circuit can vary meaningfully depending on ambient temperature at the time of the event. Canrud's electrical & safety testing service incorporates environmental conditions into safety evaluation protocols.

When an unexpected result emerges from environmental testing, our failure & root cause analysis service can help identify the underlying mechanism. You can also browse products to see equipment options if you're building out in-house environmental testing capability.

Frequently Asked Questions

Why is environmental testing important for batteries?

Battery performance and safety margins shift meaningfully with temperature and humidity, so testing only at room temperature leaves a significant blind spot for real-world deployment conditions.

What is temperature cycling testing?

Temperature cycling repeatedly moves a battery between temperature extremes to assess mechanical and electrochemical stress from repeated thermal expansion and contraction.

Does temperature affect battery safety, not just performance?

Yes, the risk profile for thermal runaway and a cell's response to abuse conditions like overcharge can vary meaningfully depending on ambient temperature, making environmental testing part of a complete safety program.

What is high-temperature storage testing used for?

It evaluates capacity fade and gas generation during extended storage at elevated temperature, revealing degradation behavior that wouldn't show up in short-term room-temperature testing.

Why is humidity testing relevant for battery packs?

Humidity exposure testing assesses corrosion risk and seal integrity, which is particularly relevant for pack-level enclosures that need to protect internal components from moisture over their service life.

Should environmental testing be combined with electrical safety testing?

Yes, combining environmental conditions with electrical safety tests like overcharge or short-circuit testing provides a more realistic picture of how a battery will behave in actual field conditions.

What temperature range is typical for battery environmental testing?

Testing ranges vary by application, but commonly span from around -20°C to 60°C or beyond, chosen to represent the realistic operating and storage conditions of the target application.

Conclusion

Environmental testing closes a critical gap that room-temperature-only evaluation simply can't address, and it's often the step that reveals whether a promising formulation is actually ready for real-world deployment.

Canrud has supported comprehensive battery safety testing for 10+ years, backed by a 100+ patent portfolio in battery technology. Our team can help you design an environmental test plan suited to your target application.