Draft minutes of the 13th IWG on EV/HFCV-RS meeting held 8 October 2026. The group reviewed the work program ahead of the forthcoming GRPE session scheduled for 14-16 October 2026, with the objective to provide GRPE with a first draft of the future UN Regulation. The latest draft Regulation was jointly reviewed, continuing technical discussions on provisions and addressing comments and proposals from stakeholders. Particular attention was given to the scope, type definition and testing requirements, and the presence of installer definition in the UN Regulation. Participants worked collaboratively towards consolidating inputs and preparing an agreed version of the draft for presentation at the next GRPE session.

Document outlines preparation for establishing a Task Force on Swappable Battery under GRPE. Identifies sustainability aspects including on-board battery use as renewable energy buffer, battery cost and separate sale/lease models, vehicle lifespan exceeding battery life requiring service exchange, and battery replacement due to technology evolution. Lists issues for WP.29 framework covering vehicle approval with different battery pack numbers, separate battery approval, safety measures during swapping, attachment functionality, durability requirements, battery history tracing, cyber security, battery failure alerts, software updates, battery lifetime definition, and compatibility checking between battery and vehicle combinations. Proposes establishment of new Task Force under GRPE with collaboration among existing groups, two-step approach for identifying work items and drafting Terms of Reference, and timeline for five Task Force meetings from December 2026 to April 2027.

Proposal to introduce UBE_certified in templates for the information document and WLTP test report, clarify that test results must be within 2 percent of the declared value, and specify the number of significant figures to be used for Usable Battery Energy of the vehicle at certification as related to level 1A requirements in Annex A1 and Annex A2 to UN R154.

Proposal to revise the generic transfer function coefficient based on 2026 test campaign results, revise the ALI range for specific transfer function assessment, integrate assessment criteria for both test methods, and delete the coefficient of determination (R²) requirement since delta ALI and RMSE are sufficiently tight for assessment.