ISO 23308-1:2025

Overview

ISO 23308-1:2025 - Energy efficiency of industrial trucks - Test methods - Part 1: General - establishes the general criteria and test requirements for measuring the energy consumption of self‑propelled industrial trucks during operation. Applicable to the in‑use phase of the product life cycle, this Part 1 document defines test conditions, measurement procedures and documentation rules that apply across a wide range of truck types and technology variants (electric, internal combustion, hybrid). It also incorporates battery efficiency and charger efficiency measurement for electric trucks.

Key technical topics and requirements

• Scope and applicability: Covers many truck types as defined in ISO 5053-1 (e.g., counterbalance lift trucks, reach trucks, pallet trucks, order‑picking trucks, towing tractors, container handlers, rough‑terrain trucks, multi‑directional lift trucks, and more).
• Test conditions: Specifies the test area (flat, hard surface such as concrete or asphalt with ≤2% slope), test track requirements, and environmental and maintenance conditions to ensure comparable results.
• Test load: Default test load is 70% of rated load (or 70% of rated drawbar pull for tractors; 70% of payload for burden carriers; personnel carriers use 70% of total passenger weight per ISO 3411).
• Measurement procedures: Defines operating sequences, measurement accuracy, and separate approaches for:
  • Electric trucks: truck energy consumption, battery efficiency, charger efficiency (including Annex A synthetic discharge cycle and Annex B simplified lead‑acid battery procedure).
  • Internal combustion (IC) trucks and hybrid trucks: adapted measurement methods.
• Calculations & documentation: Includes calculation methods, test report formats and declarations (energy consumption, battery and charger efficiencies).
• Greenhouse gas reporting: Annex C supports calculation of carbon dioxide equivalent (CO2e).

Practical applications and who uses this standard

• Machine manufacturers: Benchmark product energy performance, design improvements and provide standardized energy data in manuals.
• Procurement teams and fleet managers: Compare energy consumption across truck models for total cost of ownership and sustainability decisions.
• Regulators and market surveillance authorities: Use consistent test methods for compliance checks and energy labeling.
• Service providers and consultants: Perform independent testing, energy audits and life‑cycle assessments.
• R&D and test laboratories: Implement repeatable test cycles for product development and third‑party verification.

Related standards and annexes

• Complements truck‑specific parts: ISO 23308‑2, ‑3, ‑4, ‑6, which add detailed test cycles and requirements per truck type.
• Normative references include ISO 5053-1 (vocabulary), ISO 3691 series (safety and rated loads), IEC/IEC battery standards and fuel standards (EN 590/EN 589) where relevant.
• Normative annexes: Annex A (synthetic discharge cycle), Annex B (lead‑acid simplified procedure); Annex C (CO2e calculation).

Keywords: ISO 23308-1:2025, energy efficiency, industrial trucks, test methods, battery efficiency, charger efficiency, electric trucks, in-use testing, test cycle, industrial truck energy consumption.