Description
Fogstar Energy Stackable 5.12kWh 51.2V LiFePO4 Battery
The Fogstar Energy Stackable 5.12kWh Battery is a flexible 51.2V LiFePO4 energy storage solution designed for residential and commercial renewable energy systems.
With 5.12kWh of usable energy storage and a 100Ah capacity, the battery combines Grade A LiFePO4 cells with a Seplos 100A Battery Management System, 2A JK Active Balancer, LCD touchscreen and CAN/RS485 communication.
Its modular stackable design allows storage capacity to be expanded as energy requirements grow, making it suitable for both smaller installations and larger scalable battery storage systems.
Key Features
- 5.12kWh usable energy capacity
- 51.2V nominal voltage
- 100Ah capacity
- Grade A LiFePO4 cells
- Seplos 100A BMS
- 2A JK Active Balancer
- 50A rated charge current
- 100A rated discharge current
- 100A maximum discharge current
- Approximately 6,000 cycles at 91% DOD
- Stackable and expandable design
- LCD touchscreen monitoring
- CAN & RS485 communication
- Preloaded protocols for a range of compatible inverters
- 6-year manufacturer’s warranty
- Up to 10 years of customer support
Stackable & Scalable Energy Storage
The Fogstar Energy 5.12kWh battery has been designed as a modular energy storage solution. A system can start with 5.12kWh of battery storage and be expanded as energy requirements increase.
This makes the system suitable for a wide range of residential and commercial applications where additional battery capacity may be required in the future.
Battery Management & Active Balancing
An integrated Seplos 100A Battery Management System (BMS) manages battery operation and provides communication with compatible inverter systems.
The battery also incorporates a 2A JK Active Balancer, helping to maintain consistent balancing between cells and support efficient long-term battery performance.
Inverter Communication & Compatibility
CAN and RS485 communication are provided for integration with compatible inverter systems.
The battery includes preloaded inverter protocols for a range of popular manufacturers, including LuxPower, Victron, Sunsynk and Solis, along with additional compatible inverter systems.
Please check compatibility with your particular inverter model before purchasing or installing the battery.
LCD Touchscreen Monitoring
An integrated LCD touchscreen provides a convenient interface for monitoring battery information and system operation.
This provides easy access to important battery information without requiring separate monitoring equipment for basic system checks.
Long-Life LiFePO4 Battery Technology
The battery uses matched and balanced Grade A LiFePO4 cells designed to provide reliable performance and long service life.
Fogstar specifies approximately 6,000 cycles at 91% depth of discharge (DOD) when operated under the specified test conditions, with the full 5.12kWh capacity stated as usable.
Technical Specifications
| Battery Chemistry | LiFePO4 |
| Rated Energy | 5.12kWh |
| Usable Energy | 5.12kWh |
| Nominal Voltage | 51.2V |
| Operating Voltage | 42V – 58.2V |
| Capacity | 100Ah |
| Cell Assembly | 2P16S |
| BMS | Seplos 100A |
| Active Balancer | JK 2A |
| Rated Charge Current | 50A @ 25°C |
| Rated Discharge Current | 100A @ 25°C |
| Maximum Discharge Current | 100A |
| Cycle Life | 6,000 cycles @ 91% DOD |
| Charging Temperature | 0°C to 40°C |
| Discharge Temperature | -20°C to 40°C |
| Communication | CAN / RS485 |
| Dimensions | 580 × 470 × 200mm (without accessories) |
| Weight | 48kg |
| Warranty | 6 years |
What’s Included?
- Fogstar Energy Stackable 5.12kWh battery
- 1.5m communication cable
- Positive battery cable
- Negative battery cable
Fogstar Warranty & Support
The Fogstar Energy Stackable 5.12kWh battery is supplied with a 6-year manufacturer’s warranty. Fogstar also states that customer support is available for up to 10 years, subject to its applicable terms and conditions.
Customers should read the manufacturer’s warranty and technical documentation before installation and use.
Product Documents
📄 Download Fogstar 5.12kWh Stackable Battery Warranty Document
📄 Download Fogstar 5.12kWh Technical Specification
📄 Download Fogstar Energy Technical Specification Booklet
Installation Information
Installation should be carried out by a suitably qualified and knowledgeable person using appropriate cabling, protection, system configuration and inverter settings.
Each battery weighs approximately 48kg, so suitable lifting and handling procedures should be used when moving and positioning the unit.
Please refer to the Fogstar technical specification and warranty documentation above for the applicable operating, installation and safety requirements.
Need Help?
If you’re unsure whether the Fogstar Energy Stackable 5.12kWh battery is suitable for your existing inverter or renewable energy system, please contact South West Renewables before ordering. Our team can help with product information and compatibility enquiries.
