NEW   

Sodium-Ion Daily Energy Storage Kit

Store your energy.

Use it whenever you need it.

✔ A safer, more sustainable alternative to lithium-Ion.

✔ High performance, enhanced safety and proven reliability

✔ Real-time remote monitoring and control


Starting from 3600€ excl. VAT 
 


Request a Quote Download the technical datasheet (.pdf)

4.5 kWh per battery
Compatible with Solar PV
Backup Power
Remote Monitoring
Up to 8 batteries in parallel
More sustainable Sodium-Ion technology

A smart, scalable and reliable solution


The H2Gremm kit combines Biwatt R2 Sodium-Ion battery technology with the Victron MultiPlus-II inverter, providing a reliable, secure and scalable energy storage solution.
Designed to maximize your self-consumption, provide backup power and reduce your reliance on the grid.
This kit enables daily storage of solar energy, helping you maximize your self-consumption and energy independence.
To achieve greater energy independence throughout the year, long-term (seasonal) energy storage is key : check our Quokka H product.

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Excess PV energy storage

Store your excess solar energy during the day and use it whenever you need it.


Backup Power

Keep your essential equipment running, even during a power outage.



Remote Monitoring & Control

Monitor and control your system in real time from your smartphone or computer.

Inverter: Victron MultiPlus-II

AC Output Voltage ​ ​​​​230V (AC)

Frequency ​ ​​ ​​​50 Hz

Rated Power ​ ​ ​​​5000 VA

Rated Current ​ ​ ​​​100 A

Dimensions ​D ​​149 x W 320 x H 607 mm

Weight ​ ​ ​ ​30 kg

Battery: Biwatt R2 Sodium-Ion

Battery capacity (per unit) ​4,5 kWh

Max. Charge/ 

Discharge Current ​ ​ ​100A

Max. Number of

Batteries in Parallel ​​​8

Usable State of 

Charge Range ​ ​ ​​​15% à 100%

Operating Temperature 

Range ​ ​​​-20°C à +55°C

Dimensions ​D 525 x W 594 x H 155 mm

Weight​ ​ ​​ ​​54,5 kg

Technical Specifications


Battery: Biwatt R2 Sodium-Ion

Battery capacity (per unit) ​ ​4,5 kWh

Max. Charge/
Discharge Current ​ ​ ​​100A

Max. Number of
Batteries in Parallel            ​ ​​8

Usable State of
Charge Range ​ ​ ​​​​15% à 100%
Operating Temperature
Range ​ ​ ​ ​​​​-20°C à +55°C

Dimensions (P x L x H) ​​D 525 x W 594 x H 155 mm

Weight ​ ​ ​ ​ ​ ​​​​54,5 kg

Technical Specifications




Inverter: Victron MultiPlus-II

AC Output Voltage ​ ​ ​ ​230V (AC)

Frequency ​ ​ ​ ​​​​​50 Hz

​Rated Power ​ ​ ​ ​ ​​​5000 VA

Rated Currrent ​​ ​​​​​100 A

Dimensions (D × W × H) ​​ ​​​149 x 320 x 607 mm

Weight ​ ​ ​ ​ ​ ​​30 kg

Included in the Kit

✔ Smart control system with real-time monitoring – Victron Cerbo GX

✔ ​Communication Cable – H2Gremm Custom Wiring

✔ ​Fuse Holder – Mega Fuse

✔ ​Mega Fuse – 58 V, 125 A

✔ Sodium-Ion battery pre-configured for seamless integration with the Victron inverter

✔ Victron inverter pre-configured for seamless integration with the Sodium-Ion battery

Available options

✔ Additional Sodium-Ion battery (up to 8 units in total)

✔ GX Touch 50 Control Display

✔ Available inverter power options: 8000 VA, 10000 VA and 15000 VA

✔ Long-term energy storage – Compatible with Quokka H

Application Examples

Single-family homes
Businesses
Isolated sites
Agricultural buildings
Local authorities
Industrial applications


Have a project? Let’s talk!


Our team can help you design and size the energy solution best suited to your needs


Request a Quote


Compliance & Standards