GREENROCK stacks and combiner

Saltwater batteries are operating based on an electrolyte of aqueous sodium ions. The individual stacks of 12V, 24V or 48V can be extended modularly. Saltwater technology is the safest and most environmentally friendly way to store electrical energy. It is particularly suitable for long-lasting stationary applications, such as residential houses, commercial storage systems or off-grid solutions.

  • Preferred replacement for lead batteries
  • Safe and environmentally friendly alternative to lithium ion storage
Größenvergleich Stack

24V/48V with 2.7 kWh

Advantages of salt water technology

  • safe and environmentally friendly

  • non-flammable cell – non-explosive

  • maintenance-free

  • free of toxic materials

  • environmentally friendly electrolyte based on salt water

  • frequently occurring raw materials – no shortage possible

  • safe to touch

  • 100% depth of discharge

  • no overcharging possible

  • long system service life even in deep discharge or partial load condition

  • wide temperature range +5°C to +50°C

  • no additional building regulations to be considered

  • Transport as harmless goods – no dangerous goods or ADR

Product Performance – 24V and 48V saltwater battery

Nominal Energy:
2,7 kWh (4A charge/discharge)

Nominal Voltage:
DC 48 V

Voltage Range:
35 V – 59 V

charging power:
CC

Depth of Discharge (DOD):
100%

Efficiency:
88,5%

Maximum charge current:
20A

Maximum discharge current:
20A

Operating temperature:
-5°C to + 50°C

Storage Temperature:
-5°C to + 50°C

Cycle Life:
5.000 Zyklen @ 80% DOD

Nominal Energy:
2,7 kWh (8A charge/discharge)

Nominal Voltage:
DC 24 V

Voltage Range:
 17,5 V – 29,5 V

charging power:
CC (Gleichstrom)

Depth of Discharge (DOD):
100%

Efficiency:
88,5%

Maximum charge current:
40A

Maximum charge current:
40A

Operating temperature:
-5°C to + 50°C

Storage Temperature:
-5°C to + 50°C

Cycle Life:
5.000 Zyklen @ 80% DOD

Physical Characterictics

Height:
960 mm

Width:
313 mm

Depth:
329 mm

Weight:
140 kg

Structure Saltwater Battery

Read more about a cost comparison between different battery technologies. 

cost comparison

Product performance 12V saltwater battery

Nominal Energy:
 675 Wh (5A charging/discharging))

Nominal Voltage:
DC 12 Volt

Voltage Range:
8,8 – 15 V

Charging:
CC (Gleichstrom)

Depth of Discharge (DOD):
100%

Efficiency:
88,5%

Maximum charge current:
20A

Maximum discharge current:
20A

Operating temperature:
-5°C to + 50°C

Storage temperature:
-5°C bis + 50°C

Cycle life:
5.000 Zyklen @ 80% DOD

Physical Characteristics

Height:
235 mm

Width:
313 mm

Depth:
329 mm

Weight:
35 kg

GREENROCK Combiner Box

The Combiner box makes DC connection of the battery simple and easy.

Up to 12 GREENROCK battery stacks are connected easily. The box contains power distribution, including fuse protection for the individual stacks. Several combiner boxes can be connected to form a cluster.

Wir empfehlen jede Installation von GREENROCK Stacks mit einer Combiner Box durchzuführen. Mit einem integrierten SOC (State of Charge) Board und einem LAN Anschluss wird jeder Stack einzeln überwacht. Die Combiner Box ist für Diagnose und Analysezwecke unbedingt nötig.

We recommend installing a Combiner Box with each GREENROCK stack installation. With an integrated SOC (State of Charge) board and a LAN port, each stack is monitored individually. The Combiner Box is most important for diagnosis and analysis.

Combiner-Box_Rendering

Functions of the Combiner Box

Temperature sensor

Voltage measurement per stack

Analysis tool for measuring SOC of each individual stack

Remote diagnosis and analysis

Makes DC battery connection simple and easy

Selected Customer projects – GREENROCK in use

Learn more about our other areas of business

GREENROCK Home

10 kWh Landschaft

GREENROCK’s battery technology is the safest and greenest electricity storage device in the market for storing electric power. Maintenance-free and reliable at the same time. Robust due to the possibility of a complete deep discharging of the battery

Learn more

GREENROCK Business

Greenrock-Business

The safes and most environmentally friendly battery storage – delivered as turnkey solution.  Saltwater batteries, power electronics, energy management system (EMS), cabling and fuse protection are included in the GREENROCK business.

Learn more

Saltwaterbattery

Whitepaper_Keyvisual

GREENROCK’s battery technology is the safest and greenest electricity storage device in the market for storing electric power. Maintenance-free and reliable at the same time. Robust due to the possibility of a complete deep discharging of the battery.

Learn more

Step towards energy independence. Be informed about saltwater electrical energy storage.

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