Coventry-based battery manufacturer
Volklec has continued its rapid expansion, moving into the global underwater construction and defence industry through a multi-million-pound power system development project with offshore technology specialist Walker Subsea. The move demonstrates the brand’s pioneering capabilities and will help unlock a sizable future market opportunity.
The agreement will see the two companies co-create a first-to-market solution, the D-SEA underwater battery pack, powered by Volklec’s 21700-5000mAh energy cells. Delivering a major step forward in subsea vehicle autonomy, D-SEA provides onboard energy storage to remotely-operated vehicles (ROVs), currently limited by dependence on power from a support vessel.
In a global market valued at $5.9billion, underwater battery power is a key enabling technology for the construction of offshore renewable energy sites, and defence of critical ocean infrastructure. Thanks to the team’s deep battery systems expertise and agile, first-to-market approach, the project is now scheduled for underwater trials in Q1 2026.
Junaid Mujaver, chief operating officer at Volklec, said: “At Volklec, we drive technological innovation by collaboratively designing, manufacturing and delivering sovereign energy storage solutions for our customers. Marking the latest collaboration of several projects currently in the pipeline, we are now helping Walker Subsea create a novel and powerful underwater energy storage device with a range of applications for the marine and defence sectors.”
Vahid Walker, technical director at Walker Subsea, concluded: “It was critical for us to use a UK-based manufacturer for sustainability, supply chain de-risking and to enable sovereign capability. D-SEA marks just the first step in our long journey towards full, wireless capabilities for underwater transport, and the energy cells supplied by Volklec offer a significant step towards realising this vision.”