Fogstar Energy IP65-Rated 48.3kWh 51.2V Modular Battery Stack

  
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Fogstar Energy IP65-Rated 48.3kWh 51.2V Modular Battery Stack

  • 48.3kWh scalable 51.2V LiFePO₄ storage for demanding commercial and industrial sites.
  • Rugged IP65, heated enclosure with built-in fire suppression for harsh UK and export environments.
  • Ready for modern LV inverter systems, with CAN/RS485 communications and preloaded protocols.

The Fogstar Energy IP65-Rated 48.3kWh 51.2V Modular Battery Stack is a high-capacity LiFePO₄ solution for logistics, commercial and industrial applications needing reliable off-grid or backup power. Each modular stack delivers 48.3kWh of usable storage, with an integrated control module managing the system as a single unit and support for multiple LV 51.2V inverters. Multiple stacks can be combined to build larger systems, making this a practical choice for depots, warehouses, cold stores and critical plant loads.

Key features

  • 48.3kWh 51.2V LiFePO₄ modular stack with 314Ah nominal capacity and 48,230Wh total energy.
  • Rugged IP65-rated enclosure with integrated heating for operation down to –20 °C ambient.
  • Built-in aerosol fire suppression unit for rapid, low-maintenance protection of enclosed electrical spaces.
  • CAN/RS485 communications and preloaded LV inverter protocols, including support for LuxPower, Sunsynk, Solis, Victron, Voltacon and more.
  • Designed for scalable systems up to multi-stack installations, with pre-terminated 95 mm² power cables and modular 16.1kWh stacks.

Example applications

  • Battery storage for commercial solar PV on warehouses, logistics hubs and light industrial units.
  • Resilient backup power for cold rooms, IT rooms, security systems and critical production loads.
  • Hybrid generator-battery systems on construction compounds, remote sites and temporary facilities.
  • Microgrids and off-grid systems using compatible LV inverters for farms, estates and small industrial sites.

UK expert support

Energian provides UK-based expert support to help you specify and integrate the Fogstar Energy 48.3kWh 51.2V Modular Battery Stack into new or existing systems. For most commercial and industrial projects, installation should be carried out by a qualified electrician or approved installer familiar with LV battery systems, inverter programming and relevant regulations.

Technical specifications – Fogstar Energy 48.3kWh 51.2V Modular Battery Stack

Core performance

  • Rated energy: 48.3kWh
  • Rated voltage: 51.2V
  • Chemistry: LiFePO₄
  • Nominal capacity: 314Ah
  • Total energy (Wh): 48,230Wh
  • Cycle life: 8,000 cycles @ 91% DoD

Electrical ratings

  • Maximum charge voltage: 57.6V
  • Maximum charge current: 300A
  • Maximum discharge current: 300A
  • Discharge cut-off voltage: 43.2V
  • Charging parameters (typical): Bulk 57.6V, Float 55.2V, Low DC cut-off 43.2V
  • BMS: SEPLOS 150A

Mechanical & environmental

  • Energy per stack: 16.1kWh modules (stacked to 48.3kWh with base and control module)
  • Battery dimensions (L x W x H): 830 mm x 450 mm x 949 mm (48.3kWh stack)
  • System construction: base plate, control module and modular 16.1kWh battery stacks
  • Weight (48.3kWh stack): 394kg
  • Approximate weight per 16.1kWh stack: 123kg
  • IP rating: IP65
  • Operating discharge temperature: –20 °C to 45 °C
  • Charging temperature: –15 °C to 45 °C
  • Relative humidity (operation): 5% – 65%

Thermal management & protection

  • Integrated heating system: activates below 5 °C to enable safe charging at 0 °C and operation down to –20 °C ambient.
  • Built-in fire suppression: ultra-thin aerosol unit triggered around 170 °C, releasing potassium aerosol to disrupt the fire’s chemical reaction.

Battery management & communications

  • Battery management system: SEPLOS 150A
  • Active balancer: 2A JK active balancer for cell-to-cell energy transfer and improved pack stability.
  • Communication ports: CAN / RS485
  • Preloaded inverter protocols: compatible with multiple LV inverters, including but not limited to LuxPower, Sunsynk, Solis, Victron, Voltacon and more.

Connections & cabling

  • Supplied with pre-terminated 95 mm² battery power cables for direct battery–inverter connection or via external busbar.
  • Battery-to-battery connections via Amphenol connectors for secure, low-resistance links.
  • Supplied communication cable: approx. 1.5 m for system control and data integration.
  • Installation note: all negative connections must be made before connecting the positive.
  • Maximum modules per stack: four (4) battery modules per stack.

User interface & indicators

  • Control module with LCD touchscreen.
  • LED indicator lights for Alarm/Error, Low Battery, Charging/Fully Charged.
  • Mechanical features: battery handles, wheels with locking/levelling mechanism, base plate and 350A breaker.

Safety precautions (summary)

  • Due to weight, at least five people should assist with lifting a 16.1kWh module, following manual handling guidelines.
  • Install only in suitable, safe environments by a qualified person, following all relevant electrical codes and standards.
  • Never work on the system while powered or connected to the grid; ensure correct grounding, polarity, programming, cabling and torque.
  • Use only with compatible LV 51.2V systems; do not connect in series or mix with other chemistries.
  • Keep away from heat sources, hazards, pets and children. If overheating or burning smells occur, trip the breaker and contact emergency services.
  • Clean the enclosure with a dry cloth only.

Warranty

  • Fogstar Energy 48.3kWh battery: 6-year warranty and 10-year customer support (coverage includes BMS failure, cell failure, temperature sensors, charging/discharging faults and internal corrosion).
  • Full warranty document available from Fogstar (see Fogstar website for latest version).

Documents available for download

Shipping & support

Shipping is available to the UK, Ireland, Africa, the Caribbean and worldwide. If a shipping rate is not shown at checkout, please contact us on +44 2080640335 or info@energian.co.uk for a tailored quotation.

UK expert support is available – contact us with any questions or support requests via phone, email or live chat, or visit our office for an in-person consultation.