UK-Based · Est. 2022 · Hook, Hampshire
Three companies.
One lithium-ion ecosystem.
Lithium Ion Group unites three specialists covering every stage of the battery journey — genuine retail cells, bulk industrial sourcing, and certified custom pack manufacturing. Ten-plus years of combined expertise, one trusted UK group.
Where do you fit in?
Which company is right for you?
Whether you need a single pack of cells or a certified custom-engineered battery pack, one of our three companies is built for exactly that job.
Individuals & Resellers
Genuine, batch-tested 18650/21700/26650 cells and chargers — retail and small bulk, with safety-first packaging. That’s Nu Battery.
Meet Nu Battery →Bulk & Industrial Sourcing
20 to 10,000,000 cells, BMS modules, chargers and pack-building accessories, dispatched fast from UK stock. That’s Cell Supply.
Meet Cell Supply →Custom Pack Manufacturing
Bespoke, certified battery packs engineered in the UK for automotive, medical and industrial applications. That’s Britcell.
Meet Britcell →
Nu Battery Ltd
The UK’s No.1 source for 18650 & 21700 lithium-ion batteries
Fully compliant, genuine and traceable batteries, ideal for individuals or resellers such as vape shops and distributors. Industry-leading packaging ensures every customer gets a robust storage case and clear safety guidance, at the point of sale and beyond.
Cell Supply Ltd
Lithium-ion cells & components — delivered fast, trusted by engineers and industry
The leading UK source for bulk lithium-ion batteries, battery management systems and pack-building accessories. Reliably supplying EV, Military, Personal Transport, Solar and Educational sectors — accessible to individuals for DIY projects too. From 20 to 10,000,000 cells, lithium-ion sourcing is solved.
Britcell Ltd
Powering progress: custom battery pack manufacturing, engineered in the UK
Innovative, fresh solutions to off-grid or portable power challenges. Britcell delivers advanced, bespoke battery packs for automotive, medical and industrial applications — certified to UN38.3 and IEC standards, backed by a UK-based engineering team ready to talk through your next-generation power requirement.
Compare the group
One group, three ways to get powered up
Not sure where you land? Compare order volumes, typical customers and certifications across all three companies at a glance.
| Company | Order volume | Typical customer | Core offer | Certification / QA | Lead time |
|---|---|---|---|---|---|
| Nu Battery |
1 – 100s of cells | Individuals, vape shops, resellers | Retail-ready cells, chargers, cases | EU Battery Directive, batch-tested | Same-day dispatch (before 3pm) |
| Cell Supply |
20 – 10,000,000 cells | Engineers, pack builders, industry | Bulk cells, BMS, chargers, accessories | UK-based QA, 4.8/5 Trustpilot | Fast dispatch from UK warehouse |
| Britcell |
Bespoke / project-based | Automotive, medical, industrial OEMs | Custom-engineered battery packs | UN38.3 & IEC certified | Scoped per project |
Who we power
Sectors served across the group
Between our three companies, Lithium Ion Group supports every corner of the power ecosystem.
Why the group
One trusted UK group behind every cell and pack
Genuine, traceable stock
Every cell is batch-tested and traceable, compliant with the EU Battery Directive across the retail and wholesale businesses.
Certified engineering
Britcell’s custom packs meet UN38.3 and IEC international standards, with a safety-first UK engineering team.
10+ years, one warehouse
A decade of lithium-ion expertise and a shared UK base in Hook, Hampshire, means fast dispatch across the group.
University & industry ties
Partnerships with prestigious universities feed next-generation energy recovery and storage research back into the group.
4.8 / 5 customer rated
Cell Supply and Nu Battery are both rated “Excellent” on Trustpilot by engineers, pack builders and everyday customers alike.
Any scale, any stage
From a single cell to a two-million-unit order, or a bespoke certified pack — there’s a Lithium Ion Group company built for it.
Get in touch
Not sure which company you need?
Tell us what you’re building and we’ll point you to the right team within the group — or reach the individual companies directly below.