Smart home battery for single-phase homes
A stackable storage system for homes where space is scarce. Battery, inverter and battery management sit in one slim design, so a narrow hallway, utility room or cellar is enough to store your own electricity.
You start small and grow along
The FlexVolt One LV is built from modules of 5.12 kWh, of which 4.75 kWh is usable. You start with what fits your current consumption and add a module on top later, for example when a heat pump, a second car or extra solar panels arrive. Control module, app and installation stay the same.
Inverter, battery management and energy management sit in one system, fully matched to each other. That saves separate cabinets on the wall and couplings between brands that can falter. The LED display is concealed in the front, and in the Dysun Energy app you see at any moment what goes in and out.
- System energy
- 5.1–20.4kWh
- Usable per module
- 4.75kWh
- Connectable modules
- 16maximum
For installers
Do you live in a home with a three-phase connection? Then look at the FlexVolt One HV.
What changes at home
The battery is not a goal in itself. It is about what you do with it: keeping solar power until you need it, buying at the right moment and carrying on when the grid drops out.
Your own sun, in the evening too
By day your panels generate more than you use. The surplus goes into the battery for the evening. With 95% depth of discharge, little capacity sits unused.
Lights on when the grid fails
The system works on-grid for your own consumption, on-grid with backup and fully off-grid. During a power cut, the circuit your installer designates for it stays powered.
Stack, click, done
The modules click onto each other and onto the control module; the stack stands on the floor and is fixed to the wall with a bracket. By design, a basic set-up stands in less than thirty minutes.
Smartly steered with FlexGrid
Combined with the FlexGrid HEMS, the system charges and discharges based on forecast consumption, solar yield and market prices.
All specifications in one place
The figures apply to the FlexVolt One LV series with a single-phase connection. Your installer decides which set-up fits, based on your meter cupboard and your consumption.
- Connection
- single-phase
- Cell technology
- LFP (lithium iron phosphate)
- Module
- 5.12 kWh, of which 4.75 kWh usable
- System energy
- 5.1 to 20.4 kWh
- Nominal voltage
- 51.2 V
- Working range
- 44.8 to 56.5 V
- Depth of discharge
- 95% DoD
- Max. charge and discharge current
- 80 / 100 / 125 A
- Capacity
- 100 to 400 Ah
- Scalability
- Up to 16 connectable modules
- Standby consumption
- Less than 2 W
- Service life
- 7,000 cycles
- Protection rating
- IP66
- Operating temperature
- -20 to 50 degrees Celsius, charging and discharging
- Weight
- 47 kg per module
- Dimensions
- 23 × 72.5 × 74 to 164 cm
- Communication
- RS-485, WLAN, Bluetooth, DRY, DRM, meter, LAN and 4G (optional)
- Application
- On-grid, on-grid with backup and off-grid
- Mounting
- Floor mounting, locked with a wall bracket
- Warranty
- 10 years modules · 5 years inverter · 70% after 7,000 cycles
The operating temperature applies to charging and discharging; the heating module is part of the system as standard.
Safety
Designed safe, layer by layer
A home battery hangs in your house for years. That is why safety here is not an afterthought but the starting point of the design.
Chemistry that stays calm
Lithium iron phosphate (LFP), the cell chemistry chosen for its stability. Specified at 7,000 cycles.
Seven layers of protection
From cell monitoring to an active suppression system inside the module itself: seven layers between you and a problem. See all seven layers.
Against cold and transport
IP66 with its own heating module, reliable down to −20 °C in an unheated garage. G2 ShockWatch indicators show on delivery whether the module is intact.
Certified to the series below, including the VDE-AR-E 2510-50 battery safety standard.
Delivered through a qualified installer
In the Netherlands the FlexVolt One LV reaches your home only through certified installers. They look at your meter cupboard, consumption and panels, and decide how many modules you need and where the system goes.
No installer yet? Request a quote and we put you in touch with an installer in your region. Are you an installer yourself? See the page for installers.
Key features
What makes the FlexVolt One LV special
Certainty with an all-in-one solution and minimal installation time. The features as they appear in the brochure.
Cable-free design
The connections sit inside the design: up to 50% less installation time and fewer loose connections to check.
Modular and scalable
A system from 5.12 to 20.4 kWh, modularly expandable. You do not fix the final size in advance.
Lightning-fast charging and discharging
Charging and discharging at high current, suited to fast feed-in and peak power.
Off-grid and backup power
UPS function with a switchover within 10 ms, so there is continuity during a power cut.
Intelligent management
Monitoring and analysis through app and web, with smart energy modes, remote diagnostics and over-the-air updates.
Protected and heated
IP66 with a heating module included. 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
Curious which set-up suits your home?
Tell us what you use and what you generate, and we will work out how many modules you need. Rather call directly? That works on +31 (0)85 800 1730 or through dysun@dysun.energy.