Dyness Stack 314 HV Battery module 16.076 kWh
The Dyness Stack 314 HV Battery Module (model S51314) is a high-voltage LiFePO₄ battery module with a nominal capacity of 16.076 kWh (15.272 kWh usable) per module. The module operates at a nominal voltage of 51.2 V and is part of the modular STACK314 system. By connecting 3 to 15 modules in series, a system voltage of 134.4 to 864 V is achieved. Up to 12 clusters can be connected in parallel for a maximum system capacity of 2.89 MWh. The module requires a separate Dyness Stack 314 BDU & Base control unit for operation. Modules from different production dates may be mixed within three years — flexible for future expansion.
- High energy density: 16.076 kWh nominal (15.272 kWh usable) per module at 314 Ah and 51.2 V nominal.
- Maximum scalability: 3–15 modules in series (134.4–864 V), up to 12 clusters in parallel — maximum 2.89 MWh.
- Cable-free installation: plug-and-play stacking connection between modules — no separate DC cables between modules required.
- Long service life: ≥8,000 charge/discharge cycles and 10-year manufacturer warranty.
- Safe LiFePO₄ chemistry: thermally stable, integrated aerosol fire extinguisher detects and extinguishes fires within 5 seconds.
- Module mixing: modules from different production dates may be mixed within three years.
- Certified: UN38.3, CE-EMC and IEC62619 certified for professional installation and operation.
Technical notes for installers
The Stack 314 HV Battery Module is suitable for indoor use only (IP20). Each module weighs 115 kg and has dimensions of 770 × 425 × 230 mm; installation requires a minimum of two persons. For more than 5 modules in series, the use of a hoist or lifting equipment is recommended. Cluster height is 293 + 230 × n mm (where n is the number of modules, maximum 8 per column). If more than 8 modules are required, two columns must be used. For installations on an upper floor, the load-bearing capacity must be assessed by a structural professional — cluster weight is 38 + 115 × n kg. The recommended charge/discharge current is 140 A (0.45C); the maximum continuous current is 200 A (0.64C) and the peak current is 280 A for 2 minutes at 25 °C.
| Parameter | Value |
|---|---|
| Chemistry | LiFePO₄ (LFP) |
| Model number | S51314 |
| Nominal voltage per module | 51.2 V |
| Capacity per module | 314 Ah |
| Nominal energy per module | 16.076 kWh |
| Usable energy per module | 15.272 kWh (95% DoD) |
| Depth of discharge (DoD) | 95% |
| Operating voltage (3–15S) | 134.4–864 V |
| System capacity (1 cluster) | 48.228–241.14 kWh |
| Max. system capacity (12 clusters parallel) | 2.89 MWh |
| Recommended charge/discharge current | 140 A (0.45C) |
| Max. continuous charge/discharge current | 200 A (0.64C) |
| Peak discharge current (25 °C) | 280 A, 2 min |
| Recommended charge/discharge power | 7.168 kW |
| Max. charge/discharge power | 10.24 kW |
| Cycle life | ≥8,000 cycles (0.2C, 25 °C, 95% DoD, 70% EOL) |
| Warranty | 10 years |
| Min. modules per cluster | 3 |
| Max. modules in series | 15 |
| Max. modules per column (recommended) | 8 |
| Max. clusters in parallel | 12 |
| Module dimensions (W × D × H) | 770 × 425 × 230 mm |
| Weight per module | 115 kg |
| Cluster height (n modules) | 293 + 230 × n mm |
| Cluster weight (n modules) | 38 + 115 × n kg |
| Protection rating | IP20 (indoor use only) |
| Cooling | Forced air cooling |
| Charging temperature | 0 °C to +55 °C (optional: −20 °C to +55 °C) |
| Discharging temperature | −20 °C to +55 °C |
| Communication (via BDU) | CAN / RS485 |
| User interface | WiFi + App |
| Installation method | Cable-free stacking (plug-and-play) |
| Fire protection | Integrated aerosol fire extinguisher (<5 seconds) |
| Certifications | UN38.3 · CE-EMC · IEC62619 |
What is included in the Dyness Stack 314 HV Battery Module package?
The package contains the following components:
| Item | Quantity |
|---|---|
| S51314 Battery module | 1 |
| Flat head screws M5×30 | 4 |
| Packing list | 1 |
The Dyness Stack 314 BDU & Base (control unit) is not included and is sold separately. A minimum of 3 modules is required for a functional system.
Which inverters are compatible with the Dyness Stack 314?
The STACK314 system communicates via CAN or RS485 (via the BDU) and is compatible with, among others: ATESS, Deye, Growatt, Megarevo, Solinteg, Solis, Sosen and Sinexcel. Please consult the installation manual and the current Dyness compatibility list for model-specific and settings details per inverter type.
How many Stack 314 modules do I need for my system?
Per cluster, 3 to 15 modules in series can be connected, resulting in a system capacity of 48.23 kWh to 241.14 kWh per cluster. A maximum of 8 modules per column is recommended (cluster height: 293 + 230 × n mm; cluster weight: 38 + 115 × n kg). If more than 8 modules are required, two columns must be used. Up to 12 clusters in parallel are possible for a maximum system capacity of 2.89 MWh. Modules from different production dates may be mixed within three years.
What are the installation requirements for the Dyness Stack 314 HV Battery Module?
Installation by certified electricians only, in accordance with applicable national standards. The system is suitable for indoor use only (IP20). Each module weighs 115 kg; installation requires a minimum of two persons. For more than 5 modules, a hoist is recommended. For installations on an upper floor, the load-bearing capacity must be assessed by a structural professional — cluster weight is 38 + 115 × n kg. If more than 8 modules are required, two columns must be used. Ensure adequate ventilation around the system for the forced air cooling. Please consult the installation manual for all installation requirements.
What is the difference between the Dyness Stack 314 and the Stack 280 battery module?
The Stack 314 module (S51314) has a nominal capacity of 16.076 kWh (314 Ah) compared to 14.34 kWh (280 Ah) for the Stack 280 module (S51280). The Stack 314 therefore offers higher energy density per module and a larger maximum system capacity of 2.89 MWh (vs. 2.58 MWh for the Stack 280). Both modules support cable-free stacking installation, forced air cooling, an integrated aerosol fire extinguisher and ≥8,000 cycles. The Stack 314 is specifically designed for small commercial and industrial applications where higher capacity per module is required.
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