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Kreisel Electric introduces Li-ion home energy storage systems; 9.6 kW output for faster EV charging

Austrian manufacturer of high-performance batteries Kreisel Electric (earlier post) has introduced the MAVERO home energy storage system. The Li-ion battery packs are available in four different sizes, with usable capacity ranging from 8 kWh to 22 kWh. The casing is available in two colors and communicates all charge and discharge activities by means of LEDs. First deliveries are planned for early 2017.

MAVERO is a wall-mounted home energy storage system that stores electricity from any renewable energy source. Featuring a sophisticated design and a compact size of 105cm x 140 cm (41" x 55"), the discharge power of the system ranges from 4.8 to 9.6 kW in the voltage range from 288 to 384 V. The system enables accelerated EV charging with 100% self-generated electricity.

Usable capacity 8 kWh 11 kWh 16 kWh 22 kWh
Charge/Discharge power 4.8 kW 9.6 kW
Charge/Discharge current 14 A 28 A
Weight 70 kg 90 kg 150 kg 170 kg
Dimensions (LxBxH) 1400 x 1050 x 150 mm 1400 x 1050 x 275 mm
Voltage range 288 V – 384 V
Life expectancy 20 years, 5,000 cycles (10-year guarantee)

The efficiency rate is 96% and the space requirement is considerably lower than competitors. With an installation volume of 1.95 dm3/kWh, Kreisel said it is able to achieve 70% more capacity in roughly the same size, due to its proprietary high-performance batteries.

As one point of comparison, Tesla’s Powerwall home energy storage unit offers 3.3 kW and 92.5% round-trip DC efficiency.

The MAVERO system can be installed quickly by a single technician at relatively low costs. The modular design also offers flexible optimization based on energy needs, since additional modules can be added later. An innovative lighting design (ambient interface LED) communicates the battery level and the charge and discharge activities. Kreisel Electric also wants to break new ground in terms of the price with their new "Kreisel Energy" division. Ultimately, the retail price should be less than €700 per kWh.

MAVERO is designed to provide enough energy each day for the average household. The models MAVERO 20 and 28 have a higher capacity for more demanding applications such as charging electric cars.



Looking on the website under their battery for the i3 giving more range than the standard one they use 18650 cells:

I can't find the chemistry, but suspect that in the stationary storage at least it is NMC, not Tesla car's NCA.

They are the only ones I know of beside Tesla using 18650, but it does seem to give great energy density.

But the price above!
700 Euros kwh!

Hardly economic, I would have thought.

Bob Niland

So if we generously assume that the 22kWh is the full depth of a cycle, and we can get the rated 5000 cycles out of it to that depth, that's 110,000 kWh lifetime.

At €14740 for the 22kwh variant (excluding taxes, installation & suchlike), that's €0.13/kWh lifetime, or about about 15¢/kWh at current exchange rates. On paper, that's below market in the US in some places, or have I made some grievous calculation error?

Realistically, I suspect the battery aging, and additional up-front costs are going to shift the lifetime TCO rate to somewhere in the 20-25¢/kWh.

With renewables, it's really all about storage.


In other words, the cost of storing electricity with this battery is roughly equal to the cost of generating it with a brand-new nuclear power plant.  Filling the battery costs extra.


Yes, 20 to 25 cents/kWh (without adequate used fuel disposal and insurance) is very close to the cost of new NPPs being built in England. However, the price of electricity from the new UK CPPs will probably rise another 20+% before the projects and finished.

Near future bio-ethanol FCs and/or batteries will do it for about 10 to 15 cents/kWh for a total for PVs + storage of 15 to 20 cents/kWh (or about 50% of NPPs), sometime between 2020 and 2025.


The EPRs planned for the UK will probably never be built.  The design is too complex and hard to build.  Finland will complete Olkilouoto but is looking to Rosatom for new business.  These problems are due to the EPR design, not nuclear power.

There are a number of AP1000s, among other designs, also planned for the UK.  The AP1000 design has some teething pains but the first unit in China is already done with cold hydrostatic testing and will be on-line this year.  By the time anything breaks ground in the UK there will be the experience of 8 units to speed things along.

Bob Niland

E-P: Filling the battery costs extra.

Yeah, I omitted that bit in my TCO calc. I assumed the buyer already had an array or an owl slicer in the backyard.

But even those have TCOs, as they aren't free and don't last forever.

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