21700 · NMC · British Manufactured

Performance. Power. Quality.

Volklec’s British-made 21700 lithium-ion cells deliver high performance across diverse applications for land, sea and air.

Air

Air Applications

Illustrative applications

01 / 09

Air · Defence

Heavy-Lift & Armed Drones

The aircraft returned. The payload was delivered. The programme stayed on schedule. Behind that outcome is a cell that was never considered. That is exactly how it should be.

The Strategic Win

Field-proven endurance for demanding payload operations, with British manufacturing removing the sovereign risk that overseas cell dependency creates.

02 / 09

Air · Commercial

Commercial Delivery Drones

The operations manager stopped tracking battery swaps as a bottleneck. The fleet is flying more cycles than the model predicted. Unit economics have improved, and nothing changed except the cell.

The Strategic Win

Higher flight density, operationally proven hot swap capability, and a UK supply chain that scales with the network rather than constraining it.

03 / 09

Air · Advanced Mobility

eVTOL & Air Taxis

The investment meeting moved forward with a clear answer to the supply chain question. UK manufactured. Sovereign. Proven. The discussion continued. One less reason for the deal not to happen.

The Strategic Win

The gravimetric energy density to make the design viable, and the British manufacturing provenance to make the investment case undeniable.

Sea

Sea Applications

Illustrative applications

04 / 09

Sea · Marine

Leisure & Day Boats

A customer shared a photo from the water. Unprompted. Simply satisfied. That is what range confidence delivers. That is what reliability feels like in real use.

The Strategic Win

Stronger brand loyalty in a fast-electrifying consumer marine market, built on UK-made cells that keep their promise every time someone casts off.

05 / 09

Sea · Autonomy

Unmanned Surface Vessels

The asset remained on station for the full mission window. No early recovery. No incident report. No explanation required. In this industry, that is the best possible outcome.

The Strategic Win

Extended autonomous endurance, saltwater-ruggedised reliability, and a sovereign supply chain that satisfies defence procurement from the first conversation.

06 / 09

Sea · Subsea

Subsea Cables & Offshore Nodes

The system was deployed. It performed as expected. Operations continued without interruption. No revisit. No failure analysis. No cost overrun. A node operating exactly as specified, at depth, in the dark.

The Strategic Win

Maximum energy density in minimum volume, from a UK manufacturer with the quality assurance that high-value, zero-failure subsea deployments demand.

Land

Land Applications

Illustrative applications

07 / 09

Land · Power Tools

Power Tools & Industrial

Calls about batteries failing on site stopped. Teams stopped noticing the battery and focused on completing the job. That is the difference between a brand that is recommended and one that is tolerated.

The Strategic Win

Reduced warranty risk, cross-platform cell standardisation, and a UK supply chain that doesn't buckle under demand.

08 / 09

Land · Mobility

Electric Motorbikes

The right market was backed at the right moment, with a supply chain to support it. While competitors are scrambling for cells, operations are scaling. This is not luck. It is the result of sourcing from the right partner at an early stage.

The Strategic Win

Cell supply is secured for a fast growing urban mobility market. British manufacturing removes the geopolitical exposure that competitors are still carrying.

09 / 09

Land · Defence

Light Tactical Vehicles

Confidence comes from knowing that a mission critical component is not sourced from a country that may not be an ally in the future. That is not just a procurement win. It is the kind of decision that defines a career.

The Strategic Win

NATO-compatible sovereign supply with the operational endurance that silent watch demands — and the audit trail defence procurement requires.

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