Standards
Standards, policy and test know-how for new-energy products.
Megawatt charging for trucks: the MCS standards are here — what changes for charger makers With IEC TS 63379 published in January 2026 and IEC 61851-23-3 following, the Megawatt Charging System now has an international standard base. Up to 3 000 A and 1 250 V at the vehicle — 3.75 MW. What the standards cover, what is still open and what it takes to test an MCS charger. Read -
VDE-AR-N 4105:2026: what Germany’s new low-voltage grid code means for inverter, storage and charger makers Germany’s connection rule for generators and storage on the low-voltage grid has been revised for the first time since 2018. It brings new business — zero feed-in, commercial systems up to 500 kW, bidirectional charging — and a certificate deadline that every supplier to the German market has to plan for. -
IEC 61000-6-3:2026: the residential emission standard adds 9–150 kHz and magnetic fields The fourth edition of the generic EMC emission standard for residential environments was published in April 2026. What changed, when Europe and China catch up, and which inverter and storage products are affected. -
GB/T 18487.2-2026: the new EMC standard for EV chargers takes effect on 1 November China’s EMC standard for off-board charging equipment is replaced after nine years. A new safety floor in immunity tests, RCD checks, fixed test loads and a wider radiated range. -
GB 34660-2026: China’s vehicle EMC standard gets 6 GHz immunity and ADAS failure criteria The mandatory road-vehicle EMC standard is replaced from 1 July 2027. Immunity now reaches 6 GHz, driver-assistance faults count as failures, and charging EMC moves to a separate standard. -
GB/T 12668.2-2025: China’s drive rating standard moves to IEC 61800-2:2021 on 1 January 2027 After more than 20 years, China replaces its 2002 rating standard for AC drives. The new edition follows IEC 61800-2:2021, adds high-voltage drives and a method for evaluating products against the standard. -
GB 44240-2024: China’s first mandatory safety standard for energy storage batteries Since 1 August 2025, lithium cells and battery packs for energy storage in China must meet a mandatory national standard, including thermal runaway and thermal propagation tests. -
GB/T 20234.4-2023 and GB/T 18487.1-2023: China’s high-power DC charging standards A new connector part for up to 1500 V and 800 A, a revised conductive charging system standard, and a new CQC certification basis. What changed and what chargers need to retest. -
GB 18384-2025 and GB 38031-2025: what changed for EV high-voltage safety Two mandatory Chinese standards took effect on 1 July 2026. Battery packs must now not catch fire or explode after thermal runaway, and vehicles need a physical high-voltage disconnect. -
UL 9540 third edition: what energy storage makers need to know The third edition of UL 9540 splits AC and DC energy storage systems, ties capacity limits to UL 9540A fire tests and adds requirements for explosion control, liquid cooling and remote software updates. -
ISO 15118-20 and bidirectional charging: what changes for charger makers ISO 15118-20 is the second-generation vehicle-to-charger protocol. It adds bidirectional power transfer, mandatory TLS 1.3 and new control modes.
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