Development and manufacture of lithium-ion cells, battery modules and marine energy storage systems
Leclanché SA
Yverdon-les-Bains (CH) · Willstätt (DE)New on Amplifa
About Leclanché
Leclanché SA is a Swiss manufacturer of lithium-ion cells and complete energy storage systems, founded in 1909 in Yverdon-les-Bains. The vertically integrated company develops and manufactures the entire value chain from the cell through modules with battery and energy management systems (BMS/EMS) to the battery pack. Cell manufacturing takes place at the Willstätt site in Germany, among other things as large-format lithium titanate cells with a patented ceramic separator and water-based electrode production. At the headquarters in Yverdon-les-Bains, series production of the Navius MRS-3 Marine Rack System has been running since 2025; it is type-certified by Lloyd's Register, Bureau Veritas and DNV. The solutions are used in shipping, rail, commercial vehicles, power grids and microgrids as well as in special applications. The listed company (SIX: LECN) employs more than 350 staff with representations in eight countries.
- Site
- CH-1400 Yverdon-les-Bains
- Processes
- Manufacture of lithium-ion cells, Electrode production with water-based binder (WBB), Assembly of battery modules with BMS, cooling (air/water) and junction boxes, Assembly of battery packs (incl. cooling, BMS, IP65 housing), Series production Navius MRS-3 Marine Rack System, Software development EMS/BMS (energy storage management), Testing/certification against mechanical, thermal and electrical abuse tests, Cell, module and pack development (vertically integrated)
- Materials
- Lithium-Ion, Lithium Titanate, Ceramic (separator), Ceramic Separator, Water-Based Binder Process
- Certificates
- Type Approval Navius MRS-3, Type Approval Marine Rack System, Type Approval Lloyd's Register (Navius MRS-3), Type Approval Bureau Veritas (Navius MRS-3), Type Approval DNV (Navius MRS-3), Type Approval RINA/DNV-GL (Marine Rack System)
- Founded
- 1909
- Employees
- 350+
- Industries
- Marine/Shipping, Rail (e-Rail), Commercial Vehicles, Grid Operators/Utilities, Microgrids, Renewable Energy + Storage
- 01
Electrode production (water-based binder process)
- 02
Cell manufacturing (lithium-ion/lithium titanate)
- 03
Module assembly with BMS and cooling (air/water)
- 04
Pack integration incl. housings, junction boxes, fire protection
- 05
Battery and energy management software (BMS/EMS)
- 06
System integration and project business
- 07
Type testing and certification
Cell Chemistry & Processes
Lithium-Ion
Basis of cell manufacturing for marine, rail, grid and special applications.
Lithium Titanate
Large-format cells with high cycle stability (up to 15,000 cycles according to the manufacturer) for industrial storage.
Ceramic Separator
Licensed ceramic separator to increase the safety of the large-format cells.
Water-Based Binder Process
Solvent-free electrode production at the Willstätt site.
Sites
Yverdon-les-Bains
CHHeadquarters, development, series production Navius MRS-3
- Lot size
- Series production of Marine Rack Systems
- Materials
- Lithium-ion
- Series production line Navius MRS-3
Willstätt
DECell manufacturing lithium-ion/lithium titanate
- Part weight / size
- DIN-A4-size large-format cells
- Lot size
- approx. 400,000 cells/year
- Materials
- Lithium-ion, lithium titanate
- Fully automated cell production line (up to 76 MWh/year)
- Electrode production with water-based binder process
Systems & Components
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Manufacture of lithium-ion cellsOther | – | – | – | – | Lithium Titanate, Lithium-Ion |
| Electrode production with water-based binder (WBB)Plastics | – | – | – | – | Lithium-Ion |
| Assembly of battery modules with BMS, cooling (air/water) and junction boxesAssembly | – | – | – | – | – |
| Assembly of battery packs (incl. cooling, BMS, IP65 housing)Assembly | – | – | – | – | – |
| Series production Navius MRS-3 Marine Rack SystemAssembly | – | – | – | – | Lithium-Ion |
| Software development EMS/BMS (energy storage management)Engineering | – | – | – | – | – |
| Testing/certification against mechanical, thermal and electrical abuse testsTesting | – | – | – | – | – |
4 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Production line for lithium titanate cells (fully automated) | – | – | Annual capacity up to 76 MWh | 2012 | Willstätt, Germany |
| Cell manufacturing line with electrode production (water-based binder process) | – | – | – | – | Willstätt, Germany |
| Series production line for Navius MRS-3 Marine Rack Systems | – | – | – | 2025 | Yverdon-les-Bains, Switzerland |
| Production line for large-format pouch/flat cells (approx. 400,000 cells/year) | – | – | – | 2021 | Willstätt, Germany |
Additional services
Reference customers
Certifications & Type Approvals
Multi-layered safety concept at cell, module and system level, tested against mechanical, thermal and electrical abuse tests. The Navius MRS-3 carries type approvals from Lloyd's Register, Bureau Veritas and DNV.
| Evidence | Yverdon-les-Bains | Willstätt |
|---|---|---|
| Type Approval Lloyd's Register (Navius MRS-3) | ||
| Type Approval Bureau Veritas (Navius MRS-3) | ||
| Type Approval DNV (Navius MRS-3) | ||
| Type Approval RINA/DNV-GL (Marine Rack System) |
History
- 1909
Founded in Yverdon-les-Bains as a battery manufacturer
- 1918
Opening of an in-house test and development laboratory
- 2006
Integration of Bullith AG (Fraunhofer spin-off), pivot to lithium-ion
- 2008
Relocation to a modern production facility in Yverdon-les-Bains
- 2012
Start of production of large-format lithium titanate cells with ceramic separator (capacity up to 76 MWh)
- 2013
Precept joins as strategic investor
- 2014
Conversion of debt into shares, majority >90% held by Precept; presentation of the home battery storage TiBox
- 2017
Revenue CHF 18 million; pilot project with Fastned
- 2020
Battery supply for Canadian Pacific hydrogen locomotive announced
- 2025
Type Approvals (LR, BV, DNV) and start of series production of Navius MRS-3 in Yverdon-les-Bains
- 2026
Insolvency filing of Leclanché GmbH (press release Sept. 2026), delisting