ISO 23308-3:2025

Overview

ISO 23308-3:2025 - "Energy efficiency of industrial trucks - Test methods - Part 3: Container handling lift trucks" specifies standardized test methods to measure energy consumption of container handling lift trucks. It applies to the two truck types defined in ISO 5053-1: variable-reach container handlers and counterbalance container handlers. The standard defines test conditions, measurement procedures, an operating cycle, and required documentation to obtain comparable energy-efficiency data for these machines.

Key topics and requirements

• Scope and truck types: Targets variable‑reach and counterbalance container handlers as per ISO 5053-1.
• Test conditions: Specifies travelling position (bottom of container ≤ 0.9 m above the seat index point), boom fully retracted for travelling, and additional requirements aligned with ISO 23308-1.
• Load specifications:
  • Laden container handler: test load = 70% of rated load.
  • Empty container handler: use a standard 20 ft container (height 2 591 mm, length 6 058 mm, minimum weight 2 200 kg) per ISO 668.
• Test cycle and setup:
  • Measurement begins with truck loaded and fully supported, twist locks engaged at travelling position (position A).
  • Table 1 defines test duration (1 h), number of cycles per hour (e.g., 30 or 20 depending on rated capacity), travel distance (100 m), and lift height (4 m).
  • Variable‑reach trucks may be tested with simultaneous lifting and boom extension.
• Operating sequence: Detailed stepwise cycle (positions A → B → C → D → A) including turns, lifting without depositing the load, and travel restrictions (no travel during lift/lower or reach/retract operations).
• Documentation: Test reports and manufacturer declarations follow the requirements in ISO 23308-1:2025, Clause 6.

Applications and users

ISO 23308-3:2025 is practical for:

• Manufacturers - benchmarking product energy performance and supporting technical documentation.
• Test laboratories and certification bodies - performing repeatable energy consumption measurements for comparability and claims.
• Fleet managers and purchasers - comparing energy efficiency of container handlers to inform procurement and total cost of ownership assessments.
• Regulators and market surveillance - verifying compliance and supporting eco‑labelling or energy reporting.
• Consultants and service providers - conducting energy audits, simulations, and advising on efficiency improvements.

Using these standardized test methods enables consistent measurement of energy consumption, supports energy-efficiency claims, and facilitates fair comparison across models and manufacturers.

Related standards

• ISO 23308-1:2025 (General test procedures)
• ISO 5053-1 (Industrial trucks - Vocabulary - Types)
• ISO 668 (Freight container classification and dimensions)
• ISO 22915-9:2014 and ISO 22915-12:2015 (Stability verification for container handlers)

Keywords: ISO 23308-3:2025, energy efficiency, industrial trucks, container handling lift trucks, test methods, energy consumption measurement, variable‑reach container handler, counterbalance container handler.