UL 9540A:2026Test method for evaluating thermal runaway fire propagation in battery energy storage systems03/13/2026RevisedUN R100.05Uniform provisions concerning the approval of vehicles with regard to specific requirements for the electric power train09/26/2025RevisedUL 2743:2025Standard for portable power packs09/24/2025RevisedUL 9540:2023Standard for energy storage systems and equipment06/28/2023Revised
United States
RevisedUL 9540:2023
Standard for energy storage systems and equipment
- Effective
- 06/28/2023
- Scope
- Stationary and mobile energy storage systems
- Key requirements
- System-level safety; used with UL 9540A data for fire authority approval
- Languages
- EN
- Market
- United States
Change history
Related certification marks
Applies to product lines
- Last verified
- 2026-08-19
- Version
- v1
- Official source
- View source