RE-LION FACTORY is a French mission-driven company (entreprise à mission) based in Le Rove, near Marseille. We design and manufacture batteries and autonomous power solutions from second-life lithium-ion cells recovered from e-mobility: e-bikes, e-scooters and electric vehicles.

We work at cell level. Every cell is diagnosed individually (residual capacity, state of health, internal resistance, self-discharge, thermal stability), then reassembled into modular, maintainable packs. Each pack keeps its own traceability record covering first life, diagnostics and second-life use.

For cities and their partners, our flagship product is the RE-LION® Autonomous Solar Kit: plug-and-play power for off-grid urban equipment such as air-quality and noise sensors, LoRaWAN/IoT devices, 4G/5G/PoE cameras, signage, LED lighting and telecom relays. No trenching, no grid connection: fast deployment for permanent networks or temporary monitoring campaigns. IP65, sized to each site and device, with optional predictive monitoring and a multi-site dashboard.

We also offer Battery as a Service (monitoring, maintenance and anticipated cell replacement), The Circular Loop (giving an organisation’s own batteries a second life within its operations), replacement batteries for payment terminals and custom battery design in small series.

Cell life extended by 8 to 10 years, up to 80% lower carbon footprint than new batteries: second life is a concrete lever for circular, resilient and sovereign European cities.

At Smart City Expo we want to meet sensor manufacturers and IoT integrators who need autonomous power, cities and environmental agencies running monitoring networks, micromobility operators looking for a second life for their batteries, and partners for European R&D projects.

Mission-driven company (entreprise à mission). Our products give a second life to e-mobility lithium-ion cells: cell life extended by 8 to 10 years and up to 80% lower carbon footprint than new batteries. Eco-designed, repairable packs with removable cells and full traceability. Made in Le Rove (France) with local supply through the French take-back scheme. Integrated QHSE system under way, aiming at ISO 9001 / 14001 / 45001 certification in 2027.

Our RE-LION® Autonomous Solar Kit powers air-quality and noise sensors, LoRaWAN gateways, cameras or signage where there is no grid: plug-and-play, IP65, sized to the device and the site, with optional predictive monitoring. Its batteries are made from e-scooter and e-bike cells, each one tested individually and traced. Come and see how a city’s used mobility batteries can power its own monitoring network.

Autonomous solar power units supplied to French regional air-quality monitoring agencies for measurement stations without grid access. Replacement batteries for payment terminals (Ingenico, Verifone ranges). Member of French battery industry working groups (France Batteries, RCube) and of the regional second-life lithium hub. Supported by the EU Just Transition Fund.