21700 · NMC · British Manufactured
Performance. Power. Quality.
Volklec 21700 lithium-ion cells deliver high performance across diverse applications — on land, at sea, and in the air. British-made. Sovereign supply.
- Air
- Sea
- Land
Air
Air Applications
Illustrative applications
01 / 09
Air · Defence
Heavy-Lift & Armed Drones
The aircraft came back. The payload was delivered. The programme stayed on schedule. Somewhere in that outcome is a cell that never crossed your mind. That's 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.
01 / 09
Air · Commercial
Commercial Delivery Drones
Your operations manager stopped tracking battery swaps as a bottleneck. Your fleet is flying more cycles than the model predicted. The unit economics just got better — and you didn't have to change anything except the cell.
The Strategic Win
Higher flight density, operationally proven hot-swap capability, and a UK supply chain that scales with your network rather than constraining it.
01 / 09
Air · Advanced Mobility
eVTOL & Air Taxis
You walked into the investment meeting and the supply chain question had an answer. UK-manufactured. Sovereign. Proven. The room moved on. That's 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
01 / 09
Sea · Marine
Leisure & Day Boats
A customer just sent you a photo from the water. Unprompted. Just happy. That's what range confidence does. That's what reliability feels like from the other end of the product.
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.
01 / 09
Sea · Autonomy
Unmanned Surface Vessels
Your asset stayed on station for the full mission window. No early recovery. No incident report. You didn't have to explain anything to anyone. In this industry, that's 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.
01 / 09
Sea · Subsea
Subsea Cables & Offshore Nodes
You deployed it. It worked. You moved on. No revisit. No failure analysis. No cost overrun. Just a node doing exactly what it was specified to do, at depth, in the dark, without you.
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
01 / 09
Land · Power Tools
Power Tools & Industrial
You stopped getting the call about the battery that died on site. Your teams stopped noticing the battery and started finishing the job. That's the difference between a brand people recommend and one they tolerate.
The Strategic Win
Reduced warranty risk, cross-platform cell standardisation, and a UK supply chain that doesn't buckle under demand.
01 / 09
Land · Mobility
Electric Motorbikes
You backed the right market at the right moment — and you have the supply chain to prove it. While competitors are scrambling for cells, you're scaling. That's not luck. That's what sourcing from the right partner, early, actually feels like.
The Strategic Win
Cell supply secured for a fast-growing urban mobility market. British manufacturing removes the geopolitical exposure your competitors are still carrying.
01 / 09
Land · Defence
Light Tactical Vehicles
You sleep better knowing the mission-critical component in your programme isn't sourced from a country that might not be an ally next year. That's not just a procurement win. That's 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.
Get in Touch
Start the conversation
Tell us about your programme — what you're integrating, the platform or application, and where you are in the development cycle. We'll come back to you with the right response, not a brochure.
- Energy Cell · 21700-5000mAh · 5.00 Ah
- Power Cell · CP50/1 · 10C continuous discharge
- UK-manufactured · UKBIC, Coventry
- Full traceability and compliance documentation
- Product data sheets available on request