WP.29/2026/208
GTR 22: Proposal for a technical report on the development of Amendment 2

Technical report on the development of Amendment 2 to UN GTR No. 22. The GTR establishes a harmonized methodology for in-vehicle battery durability through battery health monitoring and minimum performance requirements. Development involved defining state of certified energy and state of certified range metrics, establishing minimum performance requirement values, creating family definitions, developing statistical procedures for on-board monitor verification, and addressing vehicle-to-grid usage through virtual distance calculations. Phase 3 revisions included defining Part C family criteria for virtual distance monitor verification, boundary conditions for verification testing, and alignment with UN Regulations 154 and 83.

UNECE server
Excerpts from session reports
GRPE | Session 94 | 17-19 Mar

66. The Co-Chair of the IWG on EVE, representative of the EC, introduced ECE/TRANS/WP.29/GRPE/2026/5 as amended by GRPE-94-42-Rev.1, accompanied by GRPE-94-47 as final status report. The representative of OICA requested additional information about how UN GTR are applied and if contracting parties were bound by the value set in the UN GTR, especially minimum performance requirements.

67. The representative of the UK and the EC was supportive of removing the square brackets and to include 72 % remaining capacity after 8 years. The representative of the US also noted that 72 % was acceptable and potentially conservative looking at available evidence.

68. The representative of China requested to keep the values as they were in UN GTR No. 22 and to potentially revise the values at the next amendment. The representative of the Republic of Korea agreed with the representative of the UK, US and EC, highlighting the lack of data for a robust conclusion. The representative of Japan was open to postpone the revision of the values at the next iteration. The Chair proposed to keep the values as they were in the original version of UN GTR No. 22.

69. GRPE agreed to this proposal, adopted ECE/TRANS/WP.29/GRPE/2026/5 as amended by GRPE-94-42-Rev.1 along with GRPE-94-47 as final status report and requested the secretariat to submit them to WP.29 and AC.3 for consideration and vote at their November 2026 sessions as draft Amendment 2 to UN GTR No. 22 and its final status report.