06/17/2026
: State of Health (SOH)
When it comes to battery development, State of Health (SOH) is a critical metric that reflects a battery’s current condition relative to its original performance. Expressed as a percentage, SOH helps engineers understand how aging, usage, and environmental factors impact capacity, internal resistance, and overall reliability.
In modern electrification programs, accurate SOH assessment is essential for:
- Validating battery durability and lifecycle performance
- Optimizing Battery Management System (BMS) algorithms
- Ensuring safety and reliability under real-world operating conditions
Testing is at the core of SOH evaluation. Through controlled cycling, environmental stress testing, and high-fidelity data acquisition, engineers can track degradation trends and make informed design decisions.
A&D Technology supports this work with integrated test solutions enabling precise measurement, repeatability, and actionable insight across your battery development lifecycle.
Want to explore more essential engineering terms? Check out A&D Technology’s Vehicle Engineering Glossary:
https://hubs.ly/Q04kzz--0