UK startup Hydrohertz unveils battery-cooling tech that cuts EV fast-charging to 10 minutes
News, 17 November 2025
UK-based Hydrohertz has introduced a next-generation thermal management system — the patented “Dectravalve” — that promises to dramatically reduce electric-vehicle charging times, improve range and extend battery life. The innovation uses a multi-zone cooling valve to regulate temperatures within an EV battery pack more precisely than traditional single-loop cooling systems.
In independent testing with the Warwick Manufacturing Group (WMG), a 100 kWh LFP battery equipped with Dectravalve was charged at up to 350 kW, and the 10-to-80 % charging time dropped to approximately 10 minutes — compared to around 30 minutes on standard systems. During the test, the battery’s hottest cell remained below 44.5 °C and temperature variation across the pack was only 2.6 °C. By contrast, typical packs reach 56 °C with temperature swings up to 12 °C under similar load.
Beyond faster charging, the system also contributes to better efficiency and safety. Because the Dectravalve maintains uniform, optimal temperatures, the battery can deliver up to 10 % more usable range in real-world driving. It also reduces risk of “lithium plating” and thermal stress that degrade battery life. Hydrohertz says the solution is chemistry-agnostic — compatible with current and future battery types — and could be a game-changer for EV makers seeking to improve charging convenience, performance and longevity.
Compiled using AI
