SK Signet 400kW All-in-One Ultra-Fast EV Charger

SK Signet is a South Korean maker of high-power EV charging equipment that presents itself as a total solution provider for EV charging, based in Bucheon, Gyeonggi-do, with a manufacturing facility in Texas, United States. Beyond hardware, it offers installation through verified contractors, support for charging station operation and ongoing service quality management for sites such as gas stations, highway rest areas, public institutions, apartments, offices and shopping centres.

Its flagship launched in 2026 is a 400 kW all-in-one charger that combines the power cabinet and dispenser in one unit. High-density silicon carbide power modules reach conversion efficiency of up to 96.5%, and operators can configure 320, 360 or 400 kW by adding modules rather than replacing the charger. The unit uses liquid-cooled cables with swing-arm management, a 32-inch touchscreen and CCS1 and NACS connectors. The lineup also includes 30, 50, 100 and 200 kW chargers for different site types.

• All-in-one cabinet: power electronics and dispenser combined in a single 400 kW unit.
• SiC power modules: high-density silicon carbide modules with up to 96.5% efficiency.
• Scalable output: selectable 320, 360 or 400 kW by adding power modules.
• Driver interface: liquid-cooled cables, swing-arm cable management and 32-inch touchscreen.
• Connector options: CCS1 and NACS support for 800 V vehicle architectures.
• Full lineup and services: 30 to 200 kW chargers plus installation, operation support and service management.

Vietnamese fuel retailers can install compact 400 kW chargers on existing forecourts without major civil works. Expressway rest stops can offer short charging stops for long-distance EV travel. Electric bus and truck operators can use high-power units to shorten turnaround times at depots.

The all-in-one design cuts installation footprint by about 54% compared with the company's previous models, easing deployment at space-limited fuel stations. Modular power lets operators start at 320 kW and add capacity later without replacing hardware. Conversion efficiency up to 96.5% lowers energy losses, and an 8-minute charge time is listed for the 400 kW class at gas stations.

New EVs increasingly use 800 V architectures that can accept much higher charging power, pushing operators toward 350 to 400 kW chargers at highways and fuel stations. Fuel retailers converting forecourts need compact, efficient units that can be upgraded as traffic grows. In Southeast Asia, oil companies and highway operators are beginning to add ultra-fast charging along major corridors.

South Korean company based in Bucheon, Gyeonggi-do, operating under SK branding with a production facility in Texas. Signed an MoU with synergEV in May 2026 covering hardware for US and Latin American deployments, software integration and pilot projects. Plans a European launch of the 400 kW charger by the end of 2026.