Cold isn’t always the enemy of an electric car; heat is the real threat, shortening battery life and cutting charge power. Startup Hydrohertz suggests a fix: Dectravalve, a system that manages battery temperature with zone-level precision.

The idea is straightforward—and all the more compelling for that: split the pack into several independent thermal zones and control each one separately. That keeps temperatures tightly in check even on high-power chargers. In tests with a 100‑kWh LFP pack, the system capped temperatures at 44.5°C with only a 2.6°C spread between cells—versus 12°C and spikes up to 56°C without it. The upshot: charging from 10 to 80 percent takes 10 minutes, without overheating or forced power reductions.

Hydrohertz claims up to a 10% range gain thanks to better thermal stability and slower cell aging. Dectravalve uses a single electronically controlled modular unit that serves four or more cooling circuits, preventing hot coolant from flowing between them.

For EV makers, the technology offers a way to enhance today’s batteries without waiting for new cell generations; for drivers, it means steady range and rapid charging even in hot weather. If these figures carry over to real-world use, that’s the kind of quiet progress that makes daily driving easier—and long trips simpler to plan.