https://battery-communication.org/tech-working-groups/wg-01-protocol-layer/2026-09-11T14:21:00+02:00https://battery-communication.org/tech-working-groups/data-models/2026-09-11T14:30:48+02:00https://battery-communication.org/tech-working-groups/conformance/2026-09-11T14:31:46+02:00