---
title: Standard for energy storage systems and equipment
ref_no: "UL 9540:2023"
status: Revised
effective_on: 2023-06-28
market: United States
source_url: "https://www.shopulstandards.com/ProductDetail.aspx?productId=UL9540"
verified_at: 2026-08-19
version: 1
canonical: "https://tsinghu.com/en/regulations/ul-9540"
publisher: Shenzhen Tsinghu Technology Co., Ltd. (agency, not a certification body)
license: CC-BY-4.0
---

# UL 9540:2023 Standard for energy storage systems and equipment

| | |
|---|---|
| Effective | 2023-06-28 |
| 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

- 2023-06-28 — Third edition published (https://www.shopulstandards.com/ProductDetail.aspx?productId=UL9540)
- 2020-02-01 — Second edition published (https://www.shopulstandards.com/ProductDetail.aspx?productId=UL9540)