UL 2271-2023-09
STANDARD FOR SAFETY Batteries for Use In Light Electric Vehicle (LEV) Applications

Standard No.

UL 2271-2023-09

Release Date

2023

Published By

Underwriters Laboratories (UL)  US  /  UL

Scope

These requirements cover electrical energy storage assemblies (EESAs), such as battery packs and combined battery pack-electrochemical capacitor assemblies, and the subassemblies/modules that make up these assemblies, for use in light electric vehicles (LEVs) as defined in this standard. This standard also covers battery management systems (BMS) that provide protection and control for EESAs. This standard does not evaluate the performance or reliability of these devices. This standard does not include evaluation requirements for EESAs used in electric vehicles, such as on-road passenger cars and motorcycles used on public roads (including highways), and starter batteries and heavy off-road vehicles, such as battery-powered ride-on industrial trucks, earthmoving or construction equipment, which are covered under the Standard for Electric Vehicle Batteries, UL/ULC 2580. This standard does not include evaluation requirements for EESAs used in stationary and power auxiliary power applications, which are covered under the Standard for Batteries for Stationary and Power Auxiliary Power Applications, UL 1973. These requirements do not include equipment used in hazardous locations as defined in the National Electrical Code, NFPA 70.

UL 2271-2023-09 Referenced Document

• ASTM B117 Standard Practice for Operating Salt Spray (Fog) Apparatus
• CSA E60730-1 Specification for radio disturbance and immunity measuring apparatus and methods – Part 1-1: Radio disturbance and immunity measuring apparatus – Measuring apparatus (Edition 4.0)*， 2025-06-30 Update
• IEC 60417 Graphical symbols for use on equipment - 12-month subscription to regularly updated online database comprising all graphical symbols published in IEC 60417*， 2025-01-01 Update
• IEC 60529 Degrees of Protection Provided by Enclosures (IP Code) (Edition 2.1 ***Applies to French text only***)*， 2026-06-08 Update
• IEC 60812 Failure modes and effects analysis (FMEA and FMECA)
• IEC 61025 Fault tree analysis (FTA)
• IEC 61508-1 Functional safety of electrical/electronic/programmable electronic safety-related systems - Part 1: General requirements
• ISO 13849-1 Safety of machinery - Safety-related parts of control systems - Part 1: General principles for design
• ISO 13849-2 Safety of machinery - Safety-related parts of control systems - Part 2: Validation
• ISO 26262-1 Road vehicles - Functional safety - Part 1: Vocabulary
• ISO 6469-1 Electrically propelled road vehicles — Safety specifications — Part 1: Rechargeable energy storage system (RESS) — Amendment 1: Safety management of thermal propagation
• ISO 7010 Graphical symbols*， 2024-04-01 Update
• ISO 9227 Corrosion tests in artificial atmospheres — Salt spray tests — Amendment 1: Footnote of Warning*， 2024-02-19 Update
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• UL 1989 Valve Regulated or Vented Batteries with Aqueous Electrolytes*， 2023-09-21 Update
• UL 1998 Safety-related software*， 2026-06-08 Update
• UL 2251 Plugs, receptacles and cable couplers for electric vehicles*， 2026-06-08 Update
• UL 50E Enclosures for Electrical Equipment, Environmental Considerations*， 2025-10-17 Update
• UL 546 CONDUCTOR TERMINATION COMPOUNDS
• UL 60730-1 Standard for Automatic Electrical Controls - Part 1: General Requirements*， 2024-10-31 Update
• UL 62368-1 Standard for Audio/Video, Information and Communication Technology Equipment - Part 1: Safety Requirements*， 2025-07-31 Update
• UL 746B Polymeric materials; long term property evaluations*， 2026-06-08 Update
• UL 746C STANDARD FOR SAFETY Polymeric Materials – Use in Electrical Equipment Evaluations
• UL 810A Standard for Safety: Electrochemical Capacitors*， 2026-02-03 Update
• UL 840 UL Standard for Safety for Insulation Coordination Including Clearances and Creepage Distances for Electrical Equipment*， 2026-06-08 Update
• UL 94 Standard for Tests for Flammability of Plastic Materials for Parts in Devices and Appliances
• UL 991 Tests for safety-related controls employing solid-state devices*， 2026-06-08 Update

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