Retired EV batteries.
Reused whole.
Ready for the grid.
CycleWatt turns complete retired EV battery packs into smart, modular energy storage - without dismantling the packs or discarding their original engineering value.
Problem · The battery paradox
One end-of-life challenge.
One grid opportunity.
Two fast-growing problems are colliding: valuable EV batteries are reaching retirement while electrified sites need affordable local storage. CycleWatt connects both sides.
Retired packs become a liability
Thousands of retired EV packs need a responsible next step. Packs can retain 70-80% usable capacity when they leave vehicles, while direct recycling can cost around €1,000 per pack.
Electrified sites hit power bottlenecks
Electrification creates demand for thousands of new stationary batteries. New systems bring higher cell cost, long global supply chains and exposure to geopolitical disruption.
Solution · Whole Pack Utilization
Drop. Test. Plug. Play.
CycleWatt keeps qualified automotive battery packs intact, validates their condition, integrates them into storage and connects the system to the site.
Drop
An authorized partner removes the retired pack and keeps the automotive enclosure intact.
Test
CycleWatt screens BMS data, insulation, safety status and usable battery condition.
Plug
A qualified pack connects to E-Stack® through CycleWatt interfaces and independent controls.
Play
The EMS dispatches stored energy for site loads, charging and renewable-energy use.
vs new-battery systems
plus original BMS
compatibility
Product · E-Stack®
Second-life storage, engineered as a product.
A compact all-in-one Battery Energy Storage System integrating complete retired EV packs, power conversion, environmental control, local HMI and remote monitoring.
Why second-life
Use the battery value Europe already has.
Click each point to see how whole-pack reuse addresses battery retirement and local energy needs together.
Lower processing burdenAvoid module sorting, reassembly and a replacement module-level BMS architecture.
Engineering effort is concentrated on pack qualification, safe interfacing, system controls and deployment instead of rebuilding the battery from modules.
Automotive-grade foundationRetain the pack enclosure, thermal design, original BMS and embedded protection logic.
The complete pack remains an engineered system. CycleWatt adds redundant controls, cabinet supervision, power conversion and site-level energy management.
Lower-carbon pathwayExtend the use of an existing battery asset before material recycling.
Qualified packs deliver additional stationary value before entering the final recycling route.
European energy sovereigntyTurn batteries already located in Europe into local energy infrastructure.
Second-life systems reduce dependence on newly manufactured cells for every local storage project and keep more battery value in Europe.
One circular solutionConnect retired-battery owners with energy users who need storage now.
CycleWatt provides a direct technical and commercial bridge between battery retirement and site-level storage deployment.
Media · BFM Business
CycleWatt on Paroles d'Entreprises.
CycleWatt presents its vision for giving complete electric-vehicle battery packs a second life as local energy-storage systems.
The interview explains why keeping the pack intact can preserve engineering value, reduce processing and support European energy sovereignty.
Ecosystem
Supported by mobility, energy and innovation partners.
