Residential
Solis FlexHome modular battery 15–40 kWh · high voltage
Solis FlexHome (15–40 kWh) is a powerful high-voltage (HV) modular energy storage system built for energy-intensive private homes, residences and the commercial sector. Thanks to its high operating voltage and flexible scaling from 15 to 40 kWh, the system delivers maximum conversion efficiency, minimal losses and high current output for powering demanding equipment.
Models
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Overview
Solis FlexHome (15–40 kWh, HV) is a high-efficiency modular high-voltage energy storage system designed to build reliable off-grid and backup power systems for large private houses, office centres, production areas and commercial sites. The high-voltage (HV) architecture minimises resistive losses in the cabling and delivers maximum efficiency when working with three-phase hybrid inverters.
The modular FlexHome concept lets storage capacity grow flexibly from 15 kWh to 40 kWh within a single rack simply by adding battery packs, making it easy to adapt to a site's growing needs. The system is built around premium LiFePO₄ (lithium iron phosphate) cells rated for over 6000 cycles and distinguished by the highest standards of thermal and chemical safety.
The system is fully integrated with high-voltage Solis inverters, guaranteeing instant switchover to backup power (under 10 ms), supporting high charge/discharge currents for rapid solar energy accumulation or operation with diesel generators, and providing intelligent protection through a centralised BMS controller. Remote management and diagnostics are handled through the SolisCloud platform.
Key specifications
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Storage capacity (kWh)
15–40
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Battery voltage
High voltage — HV (200 V+)
Key features
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The high-voltage (HV) architecture delivers maximum system efficiency, minimal heat losses and highly effective operation with three-phase inverters
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Modular capacity scaling from 15 to 40 kWh allows the system to be matched precisely to the site's energy consumption
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Safe, long-life LiFePO₄ cells rated for over 6,000 cycles for extended operation under heavy load
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Fast, seamless switchover to backup power (< 10 ms) for reliable protection of sensitive equipment and industrial automation
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Support for high charge and discharge currents for rapid energy storage from PV modules, the grid or a diesel generator
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An intelligent high-power HV BMS controller monitors the parameters of every module in real time
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Full remote monitoring support via SolisCloud for online status control and firmware updates
Technical specifications
Models
SKU: FlexHome Stackable Battery (HV) 15kWh
Performance
- Battery type
- LiFePO4
- Rated capacity (energy)
- 15 kWh
- Rated capacity (energy)
- 20 kWh
- Rated capacity (energy)
- 25 kWh
- Rated capacity (energy)
- 30 kWh
- Rated capacity (energy)
- 35 kWh
- Rated capacity (energy)
- 40 kWh
- Operating voltage
- 134.4-172.8 V
- Operating voltage
- 179.2-230.4 V
- Operating voltage
- 224-288 V
- Operating voltage
- 268.8-345.6 V
- Operating voltage
- 313.6-403.2 V
- Operating voltage
- 358.4-460.8 V
- Cell capacity
- 100 A·h
- Recommended charge / discharge rate (C-rate)
- 0.5 C/0.5 C
- Max. charge / discharge rate (C-rate)
- 0.5 C/0.5 C
- Recommended charge / discharge current
- 50 A
- Max. discharge current
- 50 A
- Depth of discharge
- Max. 100% DOD
- Display
- SOC indicator, status indicator
- Communication
- CAN/RS485
- Cycle life
- ≥6000
Protection
- Overvoltage / undervoltage protection
- Yes
- Overcurrent protection
- Yes
- Over-temperature / under-temperature protection
- Yes
- DC circuit breaker
- Yes
- DC fuses
- Yes
- Aerogel thermal insulation plate
- m
- Aerogel thermal insulation plate
- Yes
- Aerogel thermal insulation plate
- Yes
- Aerogel thermal insulation plate
- Yes
- Aerogel thermal insulation plate
- Yes
- Aerogel thermal insulation plate
- Yes
- Fire suppression function
- Yes
- Explosion relief valves
- Yes
General data
- Dimensions (W × H × D)
- 800*857*285 mm
- Dimensions (W × H × D)
- 800*1046*285 mm
- Dimensions (W × H × D)
- 800*1235*285 mm
- Dimensions (W × H × D)
- 800*1424*285 mm
- Dimensions (W × H × D)
- 800*1613*285 mm
- Dimensions (W × H × D)
- 800*1802*285 mm
- Weight
- 180 kg
- Weight
- 230 kg
- Weight
- 280 kg
- Weight
- 330 kg
- Weight
- 380 kg
- Weight
- 430 kg
- Cooling method
- Natural convection
- Ingress protection (IP)
- IP66
- Anti-corrosion protection class
- C5M
- Ambient operating temperature range
- -20~55 °C (Smart heating function)
- Storage temperature range
- -10~45 °C
- Relative humidity range
- 5~95 %
- Max. operating altitude
- 4000 m
- Mounting method
- Floor / wall mounting
- Scalability
- Up to 4 units in parallel
- Compatible inverters
- S6-EH3P(3-12)K-H/S6-EH3P(12-20)K-H/S6-EH3P(12-20)K-ND-H/S6-EH3P(8-12)K-LV-ND-H
- Standards compliance
- IEC 62619, IEC 63056, ISO13849, VDE 2510-50, UN 38.3,
Related products
Documentation and certificates
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DownloadDatasheet
Модульна батарея Solis FlexHome 15–40 кВт·год · високовольтна.pdf
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DownloadUser manual 1
Модульна батарея Solis FlexHome 15–40 кВт·год · високовольтна_інструкції.pdf
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Download
User manual 2
Модульна батарея Solis FlexHome 15–40 кВт·год · високовольтна_інструкції2.pdf
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Download
User manual 3
Модульна батарея Solis FlexHome 15–40 кВт·год · високовольтна_інструкції4.pdf
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Download
User manual 4
Акумуляторна батарея Solis IntelliHome 5–16 кВт·год · LV_інструкція4.pdf
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DownloadCertificate 1
Модульна батарея Solis FlexHome 15–40 кВт·год · високовольтна_сертифікат.pdf
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Download
Certificate 2
Модульна батарея Solis FlexHome 15–40 кВт·год · високовольтна_сертифікат2.pdf
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Download
Certificate 3
Модульна батарея Solis FlexHome 15–40 кВт·год · високовольтна_сертифікат3.pdf
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Download
Certificate 4
Модульна батарея Solis FlexHome 15–40 кВт·год · високовольтна_сертифікат4.pdf
Frequently asked questions
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Start from the site's average daily consumption and the peak load the inverter has to carry in off-grid mode. The power range of each modification and the recommended PV array size for it are listed in the product card under "Key specifications" — for a precise selection, contact a Solis dealer or use the form below.
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The list of validated batteries is published on the product page — in the compatible-equipment section, where one has already been compiled for that model. The voltage range (LV or HV, depending on the series) is stated in the technical specifications either way. If there is no list, or the battery you need is not on it, contact the Solis Ukraine technical department — compatibility should be confirmed separately.
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Most Solis hybrid and off-grid inverters support connecting a generator with automatic start-up when the battery is discharged. Whether a specific model has this function, and how it is wired, is stated under "Key features" and in the "Technical specifications" table of the product card.
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It depends on the series: single-phase models are designed for a 220 V grid, three-phase models for 380/400 V. The exact connection type for a given product is stated in the "Grid phases" card under "Key specifications".
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Solis equipment carries the manufacturer's warranty, which in Ukraine is administered by official dealers and authorised service centres. The exact term and conditions are stated on the warranty card and on the device's rating plate — for registration and the claim procedure, see the Support section.
Didn't find your answer?
The Solis Ukraine technical department advises on equipment compatibility, wiring diagrams and system configuration.