Second-life battery systems

A second life for energy

Our energy storage gives batteries from electromobility a second life. By reusing existing batteries, we reduce the demand for newly mined raw materials, lower CO₂ emissions, and create products that utilize energy more efficiently and environmentally friendly. This is circular economy in action – technologically advanced, ecologically sensible, and economically wise.

Implementing circular economy

Why your next battery has a story

Imagine a high-performance athlete ends their career in professional sports. They might no longer be fast enough for the world elite, but they are still fitter and have more stamina than average. It's the same in the world of electromobility: Batteries from electric vehicles are replaced after a few years, even though they still have an enormous capacity of 80%.

This is where our second-life batteries come into play. Instead of wasting valuable resources, we give these powerhouses a new, meaningful purpose – as stationary battery storage in your home.

From the street to your basement: A Swiss success story

Each of our batteries has already rendered valuable service for mobility in Switzerland. We use components that have proven themselves in the tough daily routine:

  • The pioneers: Our first storage units were built with batteries from the iconic yellow "Post-Töffli" (motorcycles of the Swiss Post). These batteries have reliably delivered thousands of kilometers of letters and parcels.

  • The powerhouses: Later, we expanded our range to include batteries from public transport (buses) and municipal vehicles that keep our cities clean.

The milestone: Since spring 2026, we at Modual have succeeded in using complete battery packs from electric passenger cars (PWs) as highly efficient stationary storage for the first time.

From the street to your basement: A Swiss success story

Other applications have very different requirements than e-mobility. For example, fixed battery storage. Because they are permanently installed, energy density is almost irrelevant. Lower C-rates are also completely acceptable for most applications.

From the street to your basement: A Swiss success story

Other applications have very different requirements than e-mobility. For example, fixed battery storage. Because they are permanently installed, energy density is almost irrelevant. Lower C-rates are also completely acceptable for most applications.

Circular economy: Because our resources are valuable

The production of batteries requires valuable raw materials like lithium and cobalt. It would be ecologically irresponsible to dispose of these materials while they are still fully functional.

With a second-life storage, you become part of the circular economy. You ensure that the energy already invested and the raw materials remain in the cycle as long as possible. This conserves the environment, reduces the CO2 footprint of your energy supply, and shows respect for the resources of our planet.

Sustainability for us does not mean renunciation, 

Sustainability for us means smart reuse.

The production of batteries requires valuable raw materials like lithium and cobalt. It would be ecologically irresponsible to dispose of these materials while they are still fully functional.
With a second-life storage, you become part of the circular economy. You ensure that the energy already invested and the raw materials remain in the cycle as long as possible. This conserves the environment, reduces the CO2 footprint of your energy supply, and shows respect for the resources of our planet.
Sustainability for us does not mean renunciation, 
Sustainability for us means smart reuse.

Swiss precision and its own "brain"

We believe in local quality. That's why our storage units are manufactured directly in Switzerland in Brunnen SZ. However, the heart of the system is our in-house battery management system (BMS)

  • Customized control: We programmed the software for the BMS ourselves in order to perfectly meet the special requirements of second-life cells.

  • Highest safety: The BMS monitors every cell around the clock, ensuring optimal and safe operation.

Longevity: Thanks to the intelligent Swiss control, we guarantee that the second life of your battery is particularly long and efficient.

Swiss precision and its own "brain"

Second Life describes the second phase of use for products that have fulfilled their original purpose and is an important part of the circular economy. At modual, each battery is carefully tested and validated for further use in our storage systems.

Swiss precision and its own "brain"

Second Life describes the second phase of use for products that have fulfilled their original purpose and is an important part of the circular economy. At modual, each battery is carefully tested and validated for further use in our storage systems.

Swiss precision for your home

We believe in quality at your doorstep. That is why our stationary storage systems are manufactured directly in Switzerland. This not only ensures short transport routes but also the highest processing standards. The heart of our storage systems is something you cannot see from the outside: the BMS (Battery Management System). In-house software: We have developed and programmed the brain of your storage system ourselves. Maximum safety: Our BMS monitors each individual cell around the clock. It ensures that the battery always operates within the optimal range. Longevity: Through the intelligent control "Made in Switzerland", we ensure that the second life of your battery is particularly long and efficient.

Your contribution to the circular economy

By using a battery storage system, you generally reduce your ecological footprint. By purchasing a Second Life battery storage system, you additionally reduce CO2 emissions during storage production, prevent the mining of new raw materials, and give society time to build up our recycling capacities.

CO2

The battery cells account for about 80% of the CO2 emissions of a battery storage system. By reusing already produced battery cells, modular storage solutions have an ecological footprint that is about 60% lower than that of new storage.

Extract new raw materials

For our home storage systems, we exclusively use LFP battery cells. Depending on the original cell manufacturer and supply chain, there are differences. But as a guideline, about 95 kg of raw materials need to be mined to produce 1 kWh of battery cells. Therefore, several tons of raw materials are behind each battery storage system.

Recycling capacities

Humanity has the know-how to reclaim nearly 100% of the raw materials in a battery. Unfortunately, newly mined raw materials are often still cheaper than those from a recycling process. For this reason, there are only limited capacities, and humanity struggles to build additional ones. In 2024, for example, Europe would only have been able to recycle about 10 percent of the electric vehicle batteries that will return to the market in 2030.

Become part of the solution

Use energy that is already there - safely regulated, locally manufactured, and with a story that continues to be written in your home.

Increase self-sufficiency, reduce costs, decrease CO₂.

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Increase self-sufficiency, reduce costs, decrease CO₂.

Ready for sustainable energy?

Select your preferred way

Configure product

Get a personalized quote in 2 minutes.

Buy from distributors

Order directly from our sales partners

Find installers

Contact your installer or a certified partner.

Increase self-sufficiency, reduce costs, decrease CO₂.

Ready for sustainable energy?

Select your preferred way

Configure product

Get a personalized quote in 2 minutes.

Buy from distributors

Order directly from our sales partners

Find installers

Contact your installer or a certified partner.

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Stay up to date

Receive updates on new products and offers

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© modual 2025 - All Rights Reserved.

© modual 2025 - All Rights Reserved.

© modual 2025 - All Rights Reserved.