Powerful home battery for three-phase homes
A powerful three-phase energy storage system for larger homes and commercial buildings. Safe LFP technology, an integrated hybrid inverter and capacity that grows with your consumption.
All-in-one, ready for three phases
The FlexVolt One HV combines battery modules and a three-phase hybrid inverter in one system. You do not have to add a separate inverter or reserve an extra cabinet: the installer puts down a single continuous unit that can be connected straight away. That saves cabling, lead time and installation space.
The system starts at two modules, 7.6 kWh together, and grows module by module up to six modules and 22.7 kWh. Because 95% of the stored energy is actually usable, little capacity is left on the shelf.
- System energy
- 7.6–22.7kWh
- Usable
- 95per cent
- Backup switchover
- < 10milliseconds
- Service life
- 7,000cycles
For installers
Delivery and installation run through certified installers in the Netherlands.
What the integrated approach gives you
In the FlexVolt One HV the power electronics, the energy management and the battery management work together in one enclosure. They are matched to each other, so you are not bolting together components of different makes.
PCS, EMS and BMS in one system
The inverter, energy control and battery monitoring sit in one system and are fully matched to each other. No intermediate layer is needed to align power, state of charge and protection: a shorter installation and fewer places where something can falter.
Almost all stored energy is usable too
The depth of discharge is 95%, which makes 95% of the stored capacity actually available. A 22.7 kWh system therefore gives you a real buffer rather than a theoretical one. That makes calculating against your own consumption a good deal more honest.
The power stays on during an outage
If the grid drops out, the system switches within 10 milliseconds to a three-phase 400 volt backup supply. Equipment that must not fail simply keeps running. For a whole circuit or a whole building, a FlexSwitch One belongs with it.
Capacity that grows along
You start with two modules and expand to six per system, or eighteen with three systems in parallel. If your consumption grows through a heat pump, extra machinery or charging points, you add to the system instead of replacing it.
Prepared for the connections that actually exist
The connection side is pre-configured for solar panels, battery, grid, backup power and generator. The installer does not have to invent cabling that only turns out to be right afterwards: the positions are fixed and the wiring runs along the routes intended for it. That saves time on the day and keeps later expansion straightforward.
The system has two MPPT inputs that handle up to 1000 volts of solar string, with 16 amperes per input and an MPPT efficiency of 99.9%. The European efficiency is 97.5%, so little is lost on the way from panel to battery. The enclosure has protection rating IP66, which makes both indoor and outdoor placement possible.
Mounting is on the floor and the system works on-grid, on-grid with backup, and fully off-grid. Every module is delivered with a ShockWatch impact indicator, so transport damage is visible on arrival and not only months later.
Use it yourself, or move with the price
A battery is only worth something once it charges and discharges at the right moment. The FlexVolt One HV supports several operating modes and works together with the energy control from Dysun Energy.
Four ways to steer
In self-consumption mode, generated solar power goes to your own equipment first and only then to the battery. If you work with time-of-use tariffs, the system charges in the cheap hours and delivers back when electricity is expensive.
On top of that there is an economy mode and a mode in which the grid takes priority. You choose the setting that suits your contract and your daily rhythm, and follow the result through the app and the web environment.
Together with FlexGrid HEMS
If you want more than charging and discharging, you connect the system to FlexGrid HEMS. That module speaks more than 500 communication protocols, forecasts consumption, solar yield, charging moments and heat demand, and balances automatically across the three phases.
That puts trading on the day-ahead and imbalance markets within reach, as well as smart charging of an electric car with respect for the departure time.
The specifications in one place
- Connection
- Three-phase
- Cell technology
- LFP (lithium iron phosphate)
- Module
- 3.8 kWh
- System energy
- 7.6 to 22.7 kWh
- Inverter
- FlexAmp One HV, 8, 10 or 12 kW
- Nominal voltage
- 102.4 V per module
- Depth of discharge
- 95% DoD
- Max. current
- 37 A
- Solar input
- 2 MPPT, maximum 1000 V
- Backup power
- 400 V (three-phase), switchover within 10 ms
- Standby consumption
- Less than 2 W
- Service life
- 7,000 cycles
- Scalability
- 6 modules per system, 3 systems in parallel
- Protection rating
- IP66
- Operating temperature
- charging -10 to 50, discharging -10 to 55 degrees Celsius
- Weight
- 117 to 269 kg (2 to 6 modules)
- Dimensions
- 670 × 230 mm, height 1135 to 2395 mm
- Mounting
- Floor mounting
- Application
- On-grid, on-grid with backup and off-grid
- Warranty
- 10 years modules · 5 years inverter · 70% after 7,000 cycles
The system is certified to the standards below.
Does the HV suit your connection?
The FlexVolt One HV is built for a three-phase connection. If you have an ordinary home with a single phase, the FlexVolt One LV is the logical choice: the same design, modules of 5.12 kWh.
Key features
What makes the FlexVolt One HV special
The integrated battery solution for premium installations with high demands. The features as they appear in the brochure.
Fully integrated inverter
PCS, EMS and BMS seamlessly integrated for stability, certainty and higher system reliability.
High usable capacity
95% of the stored energy is usable. What goes in comes back out in practice too.
Automotive-level safety
A seven-layer protection system with integrated overvoltage, leakage current and fire detection.
Reliability from the car industry
In development since 2014 to automotive standards, with Tier-1 LFP cells.
Refined outside, clever inside
Concealed cabling and a compact format: the system also fits in small spaces, safely and neatly.
Modularly expandable
Add modules, up to 22.7 kWh. IP66 with a heating module, ten-year warranty and 7,000 charge cycles.
Dysun Energy assurance
- Warranty
- 10 years on the battery
- Capacity warranty
- 70% after 7,000 cycles
- Cell technology
- LFP (LiFePO4)
- Safety
- 7 layers
- Enclosure
- IP66
- Support
- from the Netherlands
These are the values you can hold us to. See the warranty terms or read why a Dysun Energy system offers certainty
Have your situation worked out
Tell us what your connection looks like and what you use per year. We will look at which set-up fits and which installer near you can do the work. Calling works too, on +31 (0)85 800 1730.