Denchi Group, a leading provider of advanced subsea and mission-critical battery systems, offers the BB-2590 Smart Battery, a rugged, waterproof lithium-ion pack designed to provide dependable power for AUVs, UUVs, ROVs, hybrid marine platforms, and subsea sensor systems.
Developed with the same proven engineering that supports global defence programmes, the BB-2590 delivers high energy density, intelligent communication, and extreme durability in a compact, marine-ready format.
The BB-2590 is constructed to withstand shock, vibration, and thermal cycling, and is waterproof to IP66 standards, making it ideally suited for offshore and subsea applications. Its dual-voltage outputs (14.4 V / 28.8 V) provide integrators with maximum flexibility for powering propulsion systems, payloads, communications, or auxiliary subsystems.
With an SMBus smart interface, the battery supports real-time telemetry, health monitoring, and intelligent charging, simplifying system integration and enhancing mission reliability.
Specifications
| Voltage Modes | 12 V (10–16.4 V), 24 V (20–32.8 V) |
| Capacity | 21.0 Ah (12 V), 10.5 Ah (24 V) |
| Energy | 302.4 Wh |
| Chemistry | NMC (Nickel-Manganese-Cobalt) |
| Max Discharge Current | 20 A |
| Operating Temperature | –40 °C to +60 °C |
| Ruggedization | Waterproof IP66 tactical pack |
| Communications | SMBus interface for smart charging & telemetry |
| NSN (Denchi) | 6130-99-959-6648 |
Marine & Subsea Applications
- Autonomous Underwater Vehicles (AUVs) / Unmanned Underwater Vehicles (UUVs)
- Remotely Operated Vehicles (ROVs) & marine robotics
- Subsea monitoring nodes and instrumentation payloads
- Hybrid propulsion and backup systems for surface vessels
- Offshore renewable energy and oceanographic platforms
Based in the UK, Denchi Group delivers advanced battery systems for defence, aerospace, and ocean technology markets. With extensive in-house design, manufacturing, and testing capabilities, Denchi provides both off-the-shelf and custom energy solutions engineered for subsea, unmanned, and mission-critical applications.



