Climate testing of battery packs – verify performance, safety, and lifetime

Ensure your battery pack performs in real-world conditions and meets market requirements. With SEEL’s climate chamber for battery pack testing, you get reliable results under realistic operating conditions. This reduces risks, shortens development time, and strengthens your company’s competitiveness.

Validate battery performance under realistic conditions

Requirements for modern battery packs are rapidly increasing – higher energy density, longer lifespan, and stricter safety standards, while development timelines are shrinking. To make timely and well-informed decisions, you need tests that go beyond theory and reflect real-world usage.

In our climate chambers, you can test complete battery systems under controlled and realistic environmental conditions. We expose battery packs to extreme temperatures, varying humidity, and high power levels, giving you a clear understanding of how the system performs in practice.

The result is better risk control, fewer late-stage redesigns, and a more efficient development process.

The offering includes

As part of SEEL’s climate chamber battery pack testing services, you gain access to both advanced test infrastructure and hands-on engineering support:

Testing of complete battery packs
Verify the entire system – including battery modules, BMS, cooling systems, and electrical and mechanical components – in an integrated and realistic test environment.

Climate and thermal testing
Ensure functionality and durability under extreme temperatures (–40 °C to +120 °C) and varying humidity (10–98% RH), corresponding to real driving and storage conditions.

Cycling and performance verification
Conduct cycling and RPT tests at high power (up to 450 kW) to analyze capacity, degradation, and system behavior over time.

BMS verification and in-depth analysis
Integrate with the BMS and access detailed data at cell and module level – including voltage, current, and temperature – to optimize control strategies and safety functions.

Production and quality assurance
Verify battery packs in production-like environments to ensure requirements for functionality, quality, and safety are met before delivery.

Tailored test programs
Receive test setups tailored to your needs, from early development stages to validation and industrialization.

Test capacity that meets real-world demands

To simulate real loads and environmental conditions, our climate chambers are designed for high power, flexibility, and safe operation:

Seven climate chambers for parallel testing
Large test volume: 2200 × 3500 × 2600 mm per chamber
Temperature range: –40 °C to +120 °C
Humidity range: 10% RH to 98% RH
Two test channels per chamber
Up to 1200 A and 1000 V per channel
Power capacity: 250 kW / 450 kW (parallel configurable)

Together, this enables testing of complete battery packs under conditions that reflect real-world usage, from extreme climates to high-load scenarios.

Safe testing of critical systems

Battery pack testing requires a secure environment. Our climate chambers are equipped with advanced safety systems, including gas detection, pressure relief, and automatic shutdown functions. This ensures that even demanding tests can be carried out safely and in a controlled manner.

What happens after testing?

You receive a structured test report with measurement data, analysis, and clear conclusions. The results provide a solid decision basis for further development, optimization, or certification.

Why choose SEEL

SEEL – the Swedish Electric Transport Laboratory – is Sweden’s national test center for research and development in electromobility. Here, advanced test infrastructure meets cutting‑edge expertise to accelerate the development of next‑generation electrified transport solutions – and to strengthen a sustainable, competitive battery value chain in Sweden and Europe.

As a SEEL customer, you gain access not only to our test infrastructure but to an entire ecosystem of complementary expertise and testing capabilities. Maximize the value of your vehicle testing by combining it with specialist competencies within SEEL and RISE, such as solar simulations, EMC testing and advanced environmental testing.

As an independent actor, we deliver objective and reliable results in modern laboratories where every test is carried out in a controlled and repeatable environment. This provides safe, comparable and decision‑supporting data that drives development forward.

Our strategic location on Hisingen in Gothenburg also offers fast and convenient access to the region’s strong automotive and industrial cluster. This means shorter lead times, proximity to the right expertise and a partner who can support you throughout the entire development chain – from idea to verified solution.

Contact us today!

Would you like to strengthen your development with reliable battery pack testing in climate chambers? Contact Edi Vejzovic below, and we will explain how we can support your project.