LUMO GRS51280 High-Voltage Battery Module
A powerful, scalable 14.34 kWh building block for high-voltage energy storage
The LUMO GRS51280 is a 51.2 V, 280 Ah battery module designed for scalable high-voltage energy storage systems. Each module provides 14.34 kWh of nominal energy and supports flexible series and parallel configurations for residential, commercial, industrial and hybrid energy applications.
Up to 15 modules can be connected in series, creating battery systems with nominal voltages of up to 768 V and nominal energy of up to 215.0 kWh per series string. The specification also supports up to 15 battery banks in parallel, providing a flexible platform for projects requiring higher energy capacity.
With a recommended charge and discharge current of 140 A, a maximum current of 200 A, more than 6000 specified cycles and a design life of over 20 years, the GRS51280 provides a practical foundation for long-term solar energy storage, load management and backup-power applications.
Product highlights
- 14.34 kWh nominal energy per module
- 51.2 V nominal voltage
- 280 Ah nominal capacity
- 140 A recommended charge and discharge current
- 200 A maximum charge and discharge current
- Up to 15 battery modules in series
- Up to 15 battery banks in parallel
- More than 6000 cycles at 0.5C charge, 0.5C discharge and 80% DoD
- More than 20 years specified design life
- RS485, RS232 and CAN communication interfaces
- CE, IEC, UN38.3, MSDS and RoHS documentation stated in the specification
- Rack-format modular enclosure for scalable installation
Why GRS51280
High-capacity modular architecture
Each GRS51280 module stores 14.336 kWh of nominal energy in a compact rack-format enclosure. Its modular design allows system capacity and operating voltage to be selected according to the inverter, PCS and project requirements.
Modules can be added in series to create higher-voltage battery strings, while the stated parallel-bank capability provides a route to larger total storage capacities. This architecture is suitable for projects ranging from smaller hybrid energy systems to larger commercial and industrial installations.
Strong charge and discharge performance
The GRS51280 supports a recommended charge and discharge current of 140 A. At the module’s nominal voltage, this represents approximately 7.17 kW of recommended DC power.
The specified maximum charge and discharge current is 200 A, corresponding to approximately 10.24 kW at module level. In a series-connected system, voltage and total power increase with the number of modules while string current remains unchanged.
Actual system current may be limited by the high-voltage control box, inverter, PCS, cabling, protection equipment or thermal conditions. All components must therefore be selected according to the complete system design.
Pack-level protection with integrated aerosol fire suppression
Every OMS51314 battery pack includes its own aerosol fire-suppression device. LUMO calls this pack-level protection: a dedicated fire-response layer is placed inside each battery module, close to the cells where a thermal event could begin.
This localized architecture offers three practical advantages:
- Response close to the source: fire suppression is positioned inside the affected pack instead of relying only on cabinet-level or room-level systems.
- Protection repeated with every module: each added battery module brings its own dedicated aerosol protection layer as system capacity increases.
- Stronger system safety architecture: pack-level aerosol protection complements the electrical protections and external fire-safety measures required for a complete energy storage installation.
Pack-level aerosol protection is an additional safety layer. Final system design must still follow applicable local codes and project-specific fire detection, ventilation, isolation and suppression requirements.
Long operating life
The GRS51280 is specified for more than 6000 cycles under 0.5C charge, 0.5C discharge and 80% depth-of-discharge conditions. Its specified design life of more than 20 years supports energy-storage projects where long-term operation and predictable lifecycle performance are important.
Actual service life will depend on operating temperature, depth of discharge, charge and discharge rate, system configuration and maintenance conditions.
Flexible high-voltage system configurations
The 51.2 V module functions as a repeatable building block for high-voltage storage systems. Configurations can range from one 51.2 V / 14.34 kWh module to a 15-module system rated at 768 V / 215.0 kWh per series string.
The associated LUMO LMCB280 high-voltage control box is specified for operating voltages from 0 to 1000 V and a nominal current of 140 A. It provides RS485 and CAN communication and is designed for integration with the GRS51280 battery platform.
Parallel battery-bank configurations must be designed and approved according to the selected PCS or inverter, battery-management architecture, protection system, cable sizing and applicable project requirements.
Communication and system integration
RS485, RS232 and CAN interfaces support communication between the battery-management system and compatible inverters, PCS equipment and monitoring platforms.
Final communication compatibility, protocol version and control logic should be confirmed for the selected equipment before system installation.
Modular installation and servicing
Each battery module measures 483 x 245 x 792 mm and weighs approximately 114 kg. The rack-format construction allows multiple modules to be arranged according to the required voltage, capacity and available installation space.
The modular architecture supports staged installation, system expansion and module-level servicing without requiring a completely different battery platform for each capacity.
Technical specifications
| Parameter | GRS51280 specification |
|---|---|
| Model | LUMO-GRS51280 |
| Product rating | 51.2 V, 280 Ah |
| Nominal voltage | 51.2 V |
| Nominal capacity | 280 Ah |
| Nominal energy | 14.336 kWh |
| Discharge cut-off voltage | 44.8 V |
| Charge cut-off voltage | 56.8 V |
| Recommended charge/discharge current | 140 A |
| Maximum charge/discharge current | 200 A |
| Communication | RS485 / RS232 / CAN |
| Charge temperature | 0°C to 50°C |
| Discharge temperature | -10°C to 50°C |
| Transport/storage temperature | -20°C to 60°C |
| Cycle life | >6000 cycles at 0.5C/0.5C and 80% DoD |
| Design life | 20+ years |
| Series capability | Up to 15 modules |
| Parallel capability | Up to 15 battery banks |
| Module dimensions | 483 x 245 x 792 mm |
| Module weight | 114 kg |
| Certifications/documentation stated | CE / IEC / UN38.3 / MSDS / RoHS |
System configuration examples
| Modules in series | Nominal voltage | Nominal energy |
|---|---|---|
| 1 | 51.2 V | 14.34 kWh |
| 3 | 153.6 V | 43.01 kWh |
| 4 | 204.8 V | 57.34 kWh |
| 5 | 256.0 V | 71.68 kWh |
| 6 | 307.2 V | 86.02 kWh |
| 8 | 409.6 V | 114.69 kWh |
| 10 | 512.0 V | 143.36 kWh |
| 12 | 614.4 V | 172.03 kWh |
| 13 | 665.6 V | 186.37 kWh |
| 14 | 716.8 V | 200.70 kWh |
| 15 | 768.0 V | 215.04 kWh |
Typical applications
- Residential and commercial solar energy storage
- Commercial and industrial energy-storage systems
- Solar self-consumption
- Peak shaving and load shifting
- Time-of-use energy management
- Backup and standby power
- Factories and manufacturing facilities
- Commercial buildings
- Farms and remote installations
- EV charging infrastructure
- Hybrid solar-grid-generator systems
- Microgrids and off-grid energy systems
Short product summary
The LUMO GRS51280 is a 51.2 V, 280 Ah high-voltage battery module providing 14.34 kWh of nominal energy per module. It supports a recommended charge and discharge current of 140 A, a specified maximum current of 200 A and RS485, RS232 and CAN communication.
With support for up to 15 modules in series and up to 15 battery banks in parallel, the GRS51280 provides a flexible platform for scalable energy-storage systems. More than 6000 specified cycles, a design life exceeding 15 years and a modular rack-format enclosure make it suitable for long-term solar storage, energy management and backup-power applications.
