Description
Fogstar Energy 48.3kWh IP65 Modular Solar Battery Stack
The Fogstar Energy 48.3kWh IP65 Modular Battery Stack is a high-capacity 48V (51.2V) LiFePO4 energy storage system designed for larger residential, commercial and light industrial solar battery installations.
Built from three individual 16.1kWh battery modules, the system delivers a combined 48.3kWh of energy storage in a robust, modular configuration. A top-mounted control unit manages all three modules as one integrated battery system, while a dedicated base plate provides a secure foundation.
With integrated heating, automatic fire suppression, advanced battery management and an IP65-rated enclosure, the Fogstar 48.3kWh battery stack is designed for reliable operation in demanding environments.
Its modular construction makes installation, maintenance and future expansion more straightforward, making it an excellent option for properties requiring substantial solar energy storage or backup power capacity.
48.3kWh Modular Battery Storage
The system comprises three 16.1kWh LiFePO4 battery modules connected within a single modular stack.
- Battery Module 1: 16.1kWh
- Battery Module 2: 16.1kWh
- Battery Module 3: 16.1kWh
- Total Rated Energy: 48.3kWh
- Nominal Voltage: 51.2V
- Total Capacity: 942Ah
The top-mounted control unit manages the connected modules as one unified battery system, simplifying system monitoring and integration with compatible solar inverters.
Advanced Battery Management and Protection
The Fogstar Energy modular battery stack incorporates advanced battery management technology to support efficient charging, discharging and long-term reliability.
- Integrated battery management system (BMS)
- SEPLOS BMS technology for system protection and control
- 2A JK active cell balancing
- Accurate cell voltage monitoring
- Integrated 350A system isolation breaker
- LCD touchscreen for real-time system information
Active cell balancing helps maintain consistent cell voltages, supporting battery stability, performance and service life.
IP65 Protection for Indoor and Outdoor Installations
The Fogstar 48.3kWh battery stack features a sealed IP65-rated enclosure, providing protection against dust ingress and water jets.
This makes the system suitable for appropriately designed indoor and outdoor battery installations, including utility areas, plant rooms and sheltered external locations.
Integrated Heating for Cold-Weather Performance
An integrated battery heating system helps maintain suitable cell temperatures during charging in colder environments.
The system is designed for operation in ambient conditions down to -15°C, with heating assisting charging performance when temperatures fall.
This makes the battery particularly suitable for UK installations where winter temperatures may affect conventional lithium battery charging.
Automatic Fire Suppression
For additional protection, the Fogstar Energy battery stack incorporates a built-in, heat-activated aerosol fire suppression system.
The system is designed to activate automatically in response to excessive internal temperatures, providing an additional layer of protection within the battery enclosure.
Compatible Solar Inverter Integration
CAN and RS485 communication enable integration with a range of compatible solar inverter systems.
Supported inverter protocols include:
- Victron
- LuxPower
- Sunsynk
- Solis
- Voltronic
- Voltacon
Compatibility should be confirmed against the specific inverter model, firmware and battery communication settings before installation.
Expandable Solar Battery Storage
The modular battery design allows additional battery capacity to be added as energy requirements increase.
Starting with a 48.3kWh configuration, compatible modules can be used to expand the system to a maximum stated capacity of 64.4kWh.
This flexibility makes the Fogstar modular stack suitable for larger homes, commercial premises and installations where battery storage demand may increase over time.
Key Features
- 48.3kWh capacity: Three 16.1kWh LiFePO4 battery modules.
- Modular construction: Designed for easier handling, installation and future expansion.
- IP65 enclosure: Protection against dust and water ingress.
- Integrated heating: Supports charging in low-temperature environments.
- Automatic fire suppression: Heat-activated aerosol protection.
- Advanced BMS: Intelligent battery monitoring and protection.
- 2A active balancing: JK active cell balancing technology.
- High current capability: Up to 300A system charge and discharge current.
- 350A breaker: Integrated system isolation.
- LCD touchscreen: Convenient local monitoring and control.
- CAN/RS485 communication: Supports compatible hybrid and off-grid inverters.
- Long cycle life: Rated for 8,000 cycles at 91% depth of discharge.
- 6-year warranty: Supported by 10 years of UK-based customer service.
Technical Specifications
- Manufacturer: Fogstar Energy
- Product: IP65 48V Modular Battery Stack
- Battery Chemistry: LiFePO4
- Rated Energy: 48.3kWh
- Nominal Voltage: 51.2V
- Operating Voltage: 43.2V – 57.6V
- Capacity: 942Ah
- Module Configuration: 3 × 16S1P
- Number of Battery Modules: 3
- Energy per Module: 16.1kWh
- Maximum Charge Current: 300A
- Maximum Discharge Current: 300A
- Battery Management: SEPLOS BMS
- Active Balancing: JK 2A
- System Breaker: 350A
- Cycle Life: 8,000 cycles at 91% DOD
- Charging Temperature: 0°C to 45°C (with heating support)
- Discharge Temperature: -20°C to 45°C
- Communications: CAN / RS485
- Ingress Protection: IP65
- Dimensions: 830 × 450 × 949mm
- Weight: 394kg
- Warranty: 6 years
- Customer Support: 10 years UK-based support
What’s Included?
- 3 × Fogstar Energy 16.1kWh LiFePO4 battery modules
- 1 × Top-mounted battery control unit
- 1 × Battery stack base plate
- Pre-terminated 95mm² battery power cables
- Battery interconnection cables with Amphenol connectors
- 1.5m communication cable
The supplied battery power cables allow connection to a compatible inverter or external busbar, depending on the installation design.
Installation note: All electrical connections must be completed by a suitably qualified installer following the manufacturer’s instructions. The manufacturer specifies that negative connections must be completed before positive connections.
Ideal Applications
- Large residential solar battery storage systems
- Commercial energy storage installations
- Light industrial renewable energy systems
- High-capacity hybrid inverter installations
- Off-grid homes and remote properties
- Backup and resilience systems
- Expandable solar energy storage projects
Technical Downloads
Download the manufacturer documentation for technical specifications, installation guidance and warranty information.
Download Modular Battery Stack Technical Specification (PDF)
Download 48.3kWh Battery Technical Document (PDF)
Download Modular Battery Stack Technical Manual (PDF)
Download Fogstar Energy Battery Warranty Booklet (PDF)
Availability and Pre-Orders
This product is available to pre-order, subject to supplier availability.
Please contact South West Renewables for current stock information, expected delivery times and ordering arrangements before purchasing.
Due to the size and weight of this battery system, delivery and handling requirements should be confirmed before ordering.
