Dyness STACK100 Pro 51.2V 5.12kWh LiFePO4 HV Battery Module
Dyness STACK100 Pro 51.2V 5.12kWh LiFePO4 HV Battery Module

Description
Overview
The Dyness STACK100 Pro battery module (model S51100 Pro) is a 5.12 kWh, 51.2 V lithium iron phosphate (LiFePO₄) building block for the STACK100 Pro high-voltage storage system. Designed for residential and small commercial & industrial applications, its rackless, cable-free stacking design makes installation plug-and-play.
Stack 3 to 15 modules on a single STACK100 Pro BDU and base (sold separately) to build a 153.6–768 V cluster of 15.36–76.8 kWh, and connect up to 12 clusters in parallel for up to 921 kWh. With full 1C charge/discharge, IP66 protection and a cycle life of ≥8000 cycles, the STACK100 Pro suits demanding duty such as grid frequency regulation and EV charging stations.
Key Features
High-Performance Battery Design
- 5.12 kWh nominal energy per module (100 Ah at 51.2 V)
- Safe lithium iron phosphate (LiFePO₄) chemistry
- 100% depth of discharge — usable energy equals nominal energy
- Cycle life of ≥8000 cycles
Power & Scalability
- 1C (100 A) maximum charge & discharge; 125 A (1.25C) peak discharge at 25°C
- 3–15 modules per stack: 153.6–768 V nominal, 15.36–76.8 kWh
- Up to 12 clusters in parallel — up to 921 kWh of storage
- Battery equalization allows free mixing of modules within three years
Integrated Safety & Management
- Five-layer safety protection: pressure relief valve, aerosol fire extinguisher, temperature probe, aerogel pad between batteries and fireproof module protection
- IP66 protection rating
- Natural cooling for silent operation
- Certified to CE-EMC, CE-RED, IEC 62619, IEC 63056, IEC 62477, IEC 62040, UN38.3 and VDE 2510
Installation & System Integration
- Rackless, cable-free stacking — zero wiring between modules, one cluster installed in about 30 minutes
- Compact 657 × 460 × 169 mm (W/D/H) module, 55 kg
- CAN / RS485 communication; built-in WiFi module with app OTA updates
- Requires the STACK100 Pro BDU & base (sold separately)
Wide Inverter Compatibility
- Compatible with leading high-voltage hybrid inverters, including Solis, GoodWe, Growatt, Deye and Solinteg
Operating Environment
- Charge & discharge temperature range: -20°C to 50°C
- IP66 rated
Specifications
| Model | S51100 Pro (STACK100 Pro battery module) |
|---|---|
| Battery Type | Lithium-iron Phosphate (LiFePO₄) |
| Nominal Voltage | 51.2V |
| Nominal Capacity | 100Ah |
| Nominal Energy | 5.12kWh |
| Depth of Discharge (DOD) | 100% |
| Recommended Charge & Discharge C Rate | 0.5C (50A) |
| Max. Charge & Discharge C Rate | 1C (100A) |
| Peak Discharge Current (25°C) | 125A (1.25C) |
| Dimensions (W/D/H) | 657/460/169mm |
| Net Weight | 55kg |
| Modules per Stack | 3–15 (153.6–768V nominal, 15.36–76.8kWh) |
| Single Cluster Dimension (W/D/H) | 657/460/292+169×n mm (n = number of battery modules) |
| Expansion | Up to 12 clusters in parallel |
| Charge Temp. Range | -20°C~50°C |
| Discharge Temp. Range | -20°C~50°C |
| Cycle Life | ≥8000 cycles (100% DOD, 0.2C, 25°C) |
| Protection Level | IP66 |
| Communication | CAN/RS485 |
| Installation | Cable-free stacking |
| User Interface | Built-in WIFI module; APP OTA function |
| Cooling Method | Natural Cooling |
| Safety Protection | Pressure relief valve, Aerosol fire extinguisher, Temperature probe, Aerogel pad between batteries, Fireproof protection for the module |
| Certification | CE-EMC/CE-RED/62619/63056/62477/62040/UN38.3/VDE2510 |
| Compatible Inverters | Solis/GoodWe/Growatt/Deye/Solinteg etc. |
| Country of Manufacture | China |