EN ISO 18243:2025 PDF

Overview

EN ISO 18243:2025 - Electrically propelled mopeds and motorcycles: Test specifications and safety requirements for lithium‑ion battery systems (ISO 18243:2025) is a CEN-adopted standard that specifies test procedures for lithium‑ion battery packs and systems used in electrically propelled mopeds and motorcycles. The standard defines how to determine essential performance and safety characteristics, and to compare test results across different battery packs or systems. It also supports creation of a dedicated test plan agreed between customer and supplier.

Key topics and requirements

The standard covers a comprehensive set of test categories and requirements for lithium‑ion battery systems, including:

• General safety requirements
  • Evidence of leakage, rupture, fire, explosion and isolation resistance
• Mechanical tests
  • Vibration, mechanical shock, drop and related procedures
• Climatic requirements
  • Thermal shock, dewing (condensation), salt spray exposure
• Simulated accident tests
  • Immersion in water and exposure to fire scenarios to assess pack integrity and safety
• Electrical tests
  • Isolation resistance and short‑circuit protection verification
• Functional safety protections
  • Overcharge, overdischarge, overcurrent, internal overheating and low temperature protections
• Performance tests
  • Energy and capacity measurements at room temperature and across different temperatures and discharge rates
• Test methods and procedures
  • General test sequencing, device-under-test (DUT) preparation, preconditioning cycles and a standard cycle (SC)

Notes in the standard clarify scope boundaries: electrically power‑assisted cycles (EPAC) are typically not treated as mopeds, and cell‑level testing is addressed in the IEC 62660 series.

Applications

This standard is intended for:

• Manufacturers of electric mopeds and motorcycles and their battery suppliers for validating pack/system safety and performance
• Test laboratories performing regulatory or commercial compliance testing of vehicle battery systems
• OEMs and component purchasers configuring contract test plans to compare supplier offerings
• Regulatory bodies and certification organizations assessing safety and homologation evidence

Use cases include type‑approval testing, supplier acceptance testing, certification support, and comparative performance evaluation.

Related standards

• IEC 62660 series (cell‑level testing for lithium‑ion batteries)
• Other ISO/CEN vehicle and battery safety standards as applicable for electric vehicles and components

Keywords: EN ISO 18243:2025, lithium‑ion battery systems, electrically propelled mopeds and motorcycles, test specifications, safety requirements, battery pack testing, performance testing, climatic tests, simulated accident tests.