Xiamen D.T. Multi Tech Co., Ltd. is one of the most reliable manufacturers and suppliers of three phase home energy storage in China. With abundant experience, we warmly welcome you to wholesale cheap three phase home energy storage from our factory. If you have any enquiry about cooperation, please feel free to email us.
Residential All-in-One Hybrid ESS
Our Three-Phase Home Energy Storage System redefines residential energy independence with a robust, future‑proof design built for today's modern households.As an all-in-one three-phase hybrid ESS, it unifies high-performance battery storage, smart energy control, and modular expandability in a streamlined unit, perfectly optimized for grid-tied and hybrid residential solar installations.
Engineered for safety, longevity, and simplicity, this LiFePO4-based solution stands out for homeowners, installers, EPCs, and distributors seeking a dependable energy storage system that combines effortless installation, consistent long-term performance, and superior compatibility with a wide range of three-phase residential energy requirements.
Designed for Residential Energy Applications
Designed exclusively for three-phase household energy scenarios, the delivers stable power supply for both balanced and unbalanced loads, while significantly boosting self-consumption of rooftop solar generation.
Cut Your Energy Costs
Powered by premium cells from CATL & EVE
Human-safe low-voltage architecture
Smart Home Energy Management
Multiple operating modes: self-consumption, peak shaving, time-of-use optimization & battery priority
Seamless integration with modern smart home setups
Superior Performance
High DC/AC ratio up to 2
Ultra-long battery cycle life
Full 100% three-phase unbalanced output capability
Hassle-Free Installation
Stackable, cable-free modular design, Compact, space-saving structure
IP66-rated for reliable outdoor & indoor protection
Flexible System Expansion
Compatible with on-grid and off-grid parallel operation
Expandable up to 8 battery modules per system
Intelligent O&M
24/7 remote cloud monitoring
Quick commissioning via Bluetooth
Remote firmware updates
Products Description
| Hybrid Inverter Model | DT-E4KT | DT-E5KT | DT-E6KT |
| PV Input | |||
| Recommended Max. PV Array | 10 kW | 11 kW | 12 kW |
| Input Power STC | |||
| Max PV Voltage | 1000 V | ||
| Nominal Voltage | 720 V | ||
| MPPT Voltage Range | 140 ~ 950 V | ||
| MPPT Voltage Range with Full Load | 200 ~ 800 V | 230 ~ 800 V | 250 ~ 800 V |
| Start Voltage | 200 V | ||
| Number of MPPT Tracker | 2 | ||
| String per MPPT Tracker | 1 | ||
| Max. Input Current per MPPT | 20 A | ||
| Max. Short-Circuit Current per MPPT | 25 A | ||
| AC Output & Input (Grid) | |||
| Max. AC Continuous Output Power | 4000 W | 5000 W | 6000 W |
| Max. AC Apparent Output Power | 4400 VA | 5500 VA | 6600 VA |
| Max. Continuous Input Power | 10000 W | 11000 W | 12000 W |
| Nominal AC Voltage | 400 Vac | ||
| Nominal Frequency | 50 Hz / 60 Hz (±5 Hz) | ||
| Nominal Output Current | 5.8 A (RMS) | 7.3 A (RMS) | 8.7 A (RMS) |
| Max. Output Current | 13.1 A (RMS) | 13.1 A (RMS) | 13.1 A (RMS) |
| Max. Input Current | 21.0 A (RMS) | 22.6 A (RMS) | 22.6 A (RMS) |
| Power Factor (cos φ) | -0.8 (Lagging) ~ 0.8 (Leading) | ||
| THDi | <3% | ||
| AC Output (Backup) | |||
| Nominal AC Output Power | 4000 W | 5000 W | 6000 W |
| Max. AC Output Power | 4000 VA | 5000 VA | 6000 VA |
| Nominal Output Current | 5.8 A | 7.3 A | 8.7 A |
| Max. Output Current | 13.1 A (RMS) | ||
| Nominal Output Voltage | 400 Vac | ||
| Nominal Output Frequency | 50 Hz / 60 Hz | ||
| Output THDv (Linear Load) | 2% (Linear Load) | ||
| Battery Input | |||
| Battery Type | LFP (LiFePO4) | ||
| Nominal Battery Voltage | 51.2 V | ||
| Charging Voltage Range | 44 ~ 58 V | ||
| Max. Charging / Discharging Current | 100 / 100 A | 120 / 120 A | 120 / 150A |
| Rated Charging / Discharging Power | 4000 W | 5000 W | 6000 W |
| Battery Capacity | 100 ~ 800 Ah | ||
| Efficiency | |||
| Max. PV Efficiency | 96.60% | ||
| Euro. Efficiency | 94.50% | ||
| Protection | |||
| DC Switch | Integrated | ||
| Anti-islanding Protection | Integrated | ||
| Residual Current Monitoring | Integrated | ||
| PV Reverse Polarity Protection | Integrated | ||
| AC Short Circuit Protection | Integrated | ||
| AC Overvoltage Protection | Integrated | ||
| DC / AC Surge Protection | DC Type II; AC Type III | ||
| Remote Shutdown | Integrated | ||
| AFCI | Optional | ||
| General Specifications | |||
| Dimensions (W x H x D) | 725 × 490 × 245 mm | ||
| Weight | 40 kg | ||
| Operating Temperature Range | -25°C to +60°C (>40°C derating) | ||
| Cooling Type | Natural Convection | ||
| Max. Operation Altitude | ≤ 4000m | ||
| Operation Humidity | 0 ~ 95% (No Condensation) | ||
| IP Class | IP66 | ||
| Topology | Transformerless | ||
| Communication | RS 485 / CAN2.0 / WIFI | ||
| Display | LED / WIFI+APP / Web | ||
Smart Home Energy Management
Homes today are evolving from simple power users into environments where energy can be actively managed. This Home Energy function within the system is designed to give homeowners clearer control over how electricity is produced, stored, and consumed throughout the day. By coordinating rooftop solar generation, battery storage, and household demand, the system helps balance energy usage automatically, allowing power to flow where it is needed most without requiring complicated manual adjustments.
The system also supports practical energy strategies such as peak shaving and time-of-use scheduling. In regions where electricity prices fluctuate during the day, the battery can store energy when tariffs are lower and release it when grid electricity becomes more expensive. This approach helps households use their stored energy more effectively while keeping daily electricity costs more predictable over time.
FAQ
Q: What type of battery cells are used in this energy storage system?
A: The system uses LiFePO4 (LFP) battery technology, which is widely recognized for its safety, stability, and long service life.
For cell sourcing, we provide options from EVE or CATL, two well-known manufacturers in the lithium battery industry. This ensures consistent performance and reliable supply for residential energy storage projects.
Q: Does the system support three-phase residential electricity?
A: Yes. The system is designed for three-phase household power systems and supports 100% three-phase unbalanced output.
This is particularly important for homes where different phases may carry different loads.
Q: Is the system suitable for both on-grid and off-grid installations?
A: The system supports both on-grid and hybrid configurations.
Depending on the inverter setup, it can operate as part of a grid-connected solar system while also providing backup energy storage capabilities.
Q: What communication protocol does the battery system support?
A: The battery communicates through a CAN communication interface, which is commonly used for energy storage systems and ensures compatibility with many hybrid inverter platforms.
Q: Is the battery system suitable for outdoor installation?
A: Yes. The battery pack is designed with IP65 protection, which allows it to be installed in outdoor environments when properly mounted.
The system also uses natural cooling, which simplifies installation and reduces maintenance.
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