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High Voltage Modular LiFePO4 Energy Storage System
The DT Stacked Lithium Battery is a high voltage, modular energy storage solution designed for residential, commercial, and industrial solar applications. Built on a 51.2V LiFePO4 battery module, the system supports flexible stacking up to 400V DC, delivering high efficiency, long service life, and reliable performance for hybrid and off-grid solar systems.
This stacked lithium battery system adopts a scalable architecture that allows multiple battery modules to be stacked vertically, forming a compact and high-voltage battery bank. Designed for both indoor and outdoor installations, the system features an IP65-rated enclosure, advanced BMS protection, and plug-and-play installation to simplify deployment and maintenance.
Key Features of the Stacked Lithium Battery
- High Voltage Design (200–400V DC)
Reduces current, minimizes energy loss, and improves overall system efficiency.
- Modular & Scalable Structure
Supports 2 to 8 battery modules, with system energy expandable from 10.24 kWh to 40.96 kWh.
- Advanced LiFePO4 Chemistry
Enhanced safety, thermal stability, and long cycle life.
- IP65 Protection Level
Suitable for outdoor environments and harsh weather conditions.
- Integrated Smart BMS
Multi-level hardware and software protection, fault diagnosis, and module isolation.
- Plug & Play Installation
Floor-mounted stacked cabinet design with simple electrical connections.
- Long Service Life
More than 6000 cycles @ 80% DOD, design life over 10 years.
Single Battery Module
| Parameter | Specification |
|---|---|
| Battery Type | LiFePO4 |
| Nominal Energy | 5.12 kWh |
| Nominal Capacity | 100 Ah |
| Nominal Voltage | 51.2 V |
| Voltage Range | 43.2 – 58.4 V |
| Operation Temperature | Discharge: -20°C to 45°C / Charge: 0°C to 45°C |
| Cycle Life | >6000 cycles @ 25°C, 80% DOD |
| Designed Life | 10+ years |
| Dimensions (W×H×D) | 600 × 390 × 158.5 mm |
| Weight | 44 kg |
| Enclosure Protection | IP65 |
Products Description
| Parameters | DT-48100-4S | DT-48100-5S | DT-48100-6S | DT-48100-7S | DT-48100-8S |
| Battery module energy (kWh) | 20.48 | 25.6 | 30.72 | 35.84 | 40.96 |
| Module Number | 4 | 5 | 6 | 7 | 8 |
| Rated Voltage (V) | 204.8 | 256 | 307.2 | 358.4 | 409.6 |
| Voltage Range (V) | 172.8-233.6 | 216-292 | 259.2-350.4 | 302.4-408.8 | 345.6-467.2 |
| Charge Current (A) | 20 | 20 | 20 | 20 | 20 |
| Max. Discharge Current (A) | 50 | 50 | 50 | 50 | 50 |
| Dimension:(W*D*H) | 600*390*985 | 600*390*1138 | 600*390*1291 | 600*390*1444 | 600*390*1597 |
| Weight (kg) | 196 | 240 | 284 | 328 | 372 |
| Environment Parameter | |||||
| Enclosure Protection Rating | IP65 | ||||
| Charge Temperature Range (℃) | 0℃~50℃ | ||||
| Discharge Temperature Range (℃) | -20℃~55℃ | ||||
| Installation Method | Floor-mount | ||||
| Service Life | |||||
| Cycle Life | >6000(@25℃, 80% DOD) | ||||
| Design Life (Year) | 10 | ||||
| Certification | |||||
| Safety & Certification | CE, IEC62619, UL1973 | ||||
| Transportation | UN38.3 | ||||
Scalable Stacked Design
A key advantage of this stacked lithium battery system is its true modular and stackable structure, which allows system capacity and voltage to be expanded simply by adding battery modules.
For project developers and EPC contractors, this stackable design eliminates the need to oversize the system at the initial installation stage. Projects can start with a smaller configuration-such as a 4-module 20.48 kWh system at 204.8V-and later be expanded to 6 or 8 modules as energy demand increases, without replacing inverters, cabinets, or control systems.
The vertical stacking structure also provides clear installation advantages. With a consistent footprint of 600 × 390 mm, capacity expansion only increases the system height, not the floor space required. This is particularly valuable for residential utility rooms, commercial equipment rooms, and space-restricted installations where layout flexibility is limited.
FAQ
Q: What is the usable energy of the system?
A: The nominal energy ranges from 10.24 kWh to 40.96 kWh, depending on the number of modules. Usable energy is determined by system settings and depth of discharge, with the battery designed to support 80% DOD for long-term operation.
Q: Is the system suitable for outdoor installation?
A: Yes. The stacked lithium battery enclosure is rated IP65, making it suitable for both indoor and outdoor installations, including environments exposed to dust and rain.
Q: What is the expected cycle life of the battery?
A: The battery provides more than 6000 cycles at 80% depth of discharge under standard operating conditions, supporting a design life of over 10 years.
Q: How does the system handle safety and protection?
A: An integrated smart BMS provides multi-level protection, including over-voltage, under-voltage, over-current, short-circuit, and temperature protection. Fault diagnosis and module isolation are also supported.
Q: Is the battery suitable for commercial and industrial applications?
A: Yes. With high-voltage output, scalable capacity, and stable current performance, the system is well suited for commercial and light industrial energy storage projects, as well as residential hybrid solar systems.
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