Ultra-fast charging for depots and commercial fleets — no trenching, no utility upgrade, no 12-to-18-month wait. The 400squared stores energy on site and delivers it the moment your vehicles need it.
High-utilization fleets need fast, predictable turnaround. The grid wasn’t built to deliver that at the edge — where the vehicles actually are. The 400squared combines on-site battery storage, ultra-fast charging, and AI-driven energy management, so charging speed no longer depends on what the local grid can give you.
Deploy where others can't
No trenching. No utility upgrade. Plug into your existing low-voltage connection and run.
A conventional 400 kW charger needs a grid connection most sites don’t have. The 400squared pulls as little as ~30 kW and still delivers up to 400 kW, because the energy is already stored on site. That means depots, yards, and remote sites that can’t host traditional fast charging can host this — on the connection they already have.
The 400squared
by the numbers
400 kWh
Total Available Energy Storage Capacity
400 kW
Peak Maximum Continuous Output Power
2-4 weeks
Average Time from Order to Commissioning
2 hours
Installation time
What that means for your operation:
Proven in the most extreme environments
Tested under desert heat, limited grid access, and demanding duty cycles, the 400squared delivers where reliability matters most.
Port uptime
99%
Installation time
2 hours
Average energy delivered per session
38 kWh
Charge in 10 minutes
Up to 50%
Validated at the Hyundai California Proving Ground and stress-tested across extreme field conditions.
Advanced integration
Every unit runs on the same software stack: Stargazer decides when energy moves, Reef shows you everything that happens.
Stargazer®
AI energy optimization
Stargazer learns how your fleet actually charges — which vehicles plug in when, and how much energy each shift really needs — and schedules around it. Energy goes into the battery when power is cheapest, stays there through demand-charge windows, and a reserve is held back for outages before they hit.
Shifts charging to the lowest-cost hours, automatically
Learns your duty cycles and adapts as they change
Reserves capacity ahead of forecasted grid events
Reef® Platform
Remote monitoring & operations
Comprehensive monitoring and diagnostics platform providing real-time insights and predictive maintenance capabilities.