Smart home battery for single-phase homes
FlexVolt One LV — compact power, single-phase
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 up from modules of 5.12 kWh, of which 4.75 kWh is actually usable. You start with the capacity that fits your current consumption and put another module on top later if you get a heat pump, a second car or extra solar panels. The system stays the same throughout: the same control module, the same app, the same installation.
Inside, the inverter, the battery management system and the energy management work as one whole. That saves separate cabinets on the wall and it saves fault-prone couplings between devices from different brands. Through the Dysun Energy app, with its concealed LED display, you can see at any moment what goes in and what comes 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
During the day your panels generate more than you use. Instead of feeding that surplus back, it goes into the battery and you take it out again in the evening. With a 95% depth of discharge, little capacity is left 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. Wall or floor mounting is possible, depending on what the space allows. 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
- Wall or floor mounting
- 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 not for the highest density but 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 enclosure with its own heating module: reliable down to −20 °C in an unheated garage. G2 ShockWatch indicators show on delivery whether the module arrived in one piece.
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 exclusively through certified installers. They look at your meter cupboard, your consumption and your solar panels, and use that to decide how many modules you need and where the system is best placed.
Do not know yet who you will work with? Then request a quote; we put you in touch with an installer in your region. If you work as an installer yourself, the page for installers explains how you manage connected systems remotely.
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 are tucked away in the design. That saves up to 50% of the installation time and removes loose connections that have to be checked.
Modular and scalable
A system from 5.12 to 20.4 kWh, modularly expandable to 81.6 kWh. 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.