• A warehouse full of batteries in front of a field with wind turbines.

    Mercedes-Benz Energy Storage.

    For stationary storage solutions.

A second life for e-car batteries.

A strong concept: used vehicle batteries are combined to create a stationary battery system so that they can be of use on the energy market as storage systems far beyond their life as vehicle batteries. Energy storage is set to become increasingly important due to the expansion of energy from renewable sources such as the wind or sun and the associated electricity fluctuations. Mercedes-Benz Energy GmbH already has outstanding expertise, experience and viable concepts in the field of second-life storage.

Charge and discharge rates of up to 4 C can be achieved with second-life Mercedes-Benz Energy batteries. Scalable components with integrated cooling provide storage capacities ranging from 100 kWh up to 100 MWh.

Black start, back-up, UPS or off-grid applications are all areas in which the storage systems developed by Mercedes-Benz Energy and its partners can be used.

A car battery as a key component in large-scale storage.

At a glance.

Stylized blue line drawing of a tachometer.
High performance standards achievable (up to 4 C) 
Stylized blue line drawing of a thermometer.
Integrated battery cooling possible 
Stylized blue line drawing of a shield with lightning symbol
Safe and long-lasting lithium-ion technology (TS 16949) 
Stylized blue line drawing of an energy storage system in two parts.
Individually scalable (modular system structure) 
Stylized blue line drawing of a medal.
“Made in Germany” to Mercedes-Benz standards

Technical data.

Number of cells100
Nom./ max. voltage365 V / 420 V
Capacity (nominal)37.8 Ah
Energy content13.8 kWh
Power (continuous/peak)45 kW / 90 kW
Dimensions900 x 480 x 200 mm
Weight110 kg

Diverse applications.

The potential applications of the scalable Mercedes-Benz Energy Storage systems couldn’t be more varied. Large enterprises, retailers and even buildings with highly variable energy needs can all benefit from the “second life” of e-car batteries. They can also be used in agricultural operations and workshops, municipalities or other businesses.

Stylized blue line drawing of a graph with a peak in the middle.
Peak load management.
Peak loads and large fluctuations in consumption often drive energy costs unnecessarily high. However, if you use a storage system, you will use significantly less electricity from the grid during peak periods and instead use cheaper energy that has already been stored.

Stylized blue line drawing of a light bulb split down the middle.
Back-up power. UPS. Black start.
If your primary concern is not the cost of energy but rather having a reliable supply, then the energy storage system is your safeguard. Your back-up. Your emergency power system. Your uninterruptible power supply. A black start function can be integrated upon request.

Stylized blue line drawing of the Sun and a wind turbine.
The Mercedes-Benz Energy Storage system can be used in conjunction with a photovoltaic or wind power system to provide you with a reliable energy supply without being connected to the grid.

Stylized blue line drawing of a see-saw with a flash of lightning on each side.
Operating reserve and grid stability.
Another possible application is to sell the battery storage on the operating reserve market. This offsets imbalances between power generation and consumption in the grid.

Current sales folder for Mercedes-Benz Energy Storage.

At a glance.

A4 information folder, 4 pages
You can download the current brochure here and find out all the important information on Mercedes-Benz Energy Storage systems – the key components for stationary large-scale storage solutions.
Download the brochure now

Some of our large-scale storage projects.

  • A smart electric drive with the “enercity” logo in front of racks with batteries.

enercity puts Hannover in the lead.

Partners Daimler AG – via its wholly owned subsidiary ACCUMOTIVE – and enercity (Stadtwerke Hannover AG) are building a “live spare parts store”.

The third-generation smart fortwo electric drive has been on the roads since 2012, delighting customers around the world. The next generation is revved up and ready to go. The smart EQ fortwo models heralded the start of the EQ era. But what happens if the battery fails? Car manufacturers are prepared for this eventuality, of course, and must have suitable replacements available. This innovative storage concept has another decisive advantage.

For a battery to be ready for use upon replacement, it must be regularly cycled – gently charged and discharged – while in storage. Otherwise, it might deep-discharge, which can damage the battery.

Close-up of the grille of a smart electric drive.
Silver-coloured battery.

A fountain of youth for batteries.

The highly advanced battery management system developed by Daimler subsidiary “Deutsche ACCUMOTIVE” ensures an optimum battery state by regularly charging and discharging energy. This maintains the right temperature and charge at all times in each battery pack for compliance with strict quality and service life requirements. This procedure does not adversely affect the ageing process of the systems but instead acts as a fountain of youth for the battery packs.

The spare parts store for electromotive battery systems comprises some 3,000 of the batteries that are being held in stock for the current fleet of smart electric-drive vehicles and have been pooled to form a stationary storage facility. Its storage capacity of 17,5 MWh in total makes the system one of the largest in Europe. Once completed, the energy storage facility will market its capacity on the German primary balancing power market.

The world’s largest second-use battery storage system.

What is currently the world’s largest second-use battery storage will be starting up soon in Lünen, Westphalia. A joint venture of Daimler AG, The Mobility House AG and GETEC is going to operate the facility on the REMONDIS SE site and market the energy storage on the German primary balancing power market. Unlike all other Mercedes-Benz Energy Storage Business systems, this solution works with used batteries. Systems from second-generation smart electric-drive vehicles are being pooled in Lünen to form a stationary storage facility with a total capacity of 13 MWh. The process has proven to improve the environmental footprint of electric vehicles and, in doing so, helps to make e-mobility cost-efficient.

High-performance battery storage systems are one of the cornerstones of a successful energy transformation. As more electricity is fed in from fluctuating renewable energy sources – such as wind and solar power plants – they will be the key to stabilizing the grids. They even out fluctuations with virtually no losses, taking over a task that is currently being performed in part by fossil-fuelled power plants. This can speed up the energy transformation and eliminate the cost of expanding the grid and building new power plants.

Five people in suits holding the groundbreaking ceremony for the battery storage system in Lünen.