Professional-grade rack-mount energy storage for off-grid homes, cabins, and rural properties.
The Fogstar Energy Server Rack Battery is a 5.12kWh, 48V LiFePO4 unit built for modular installation in standard server rack cabinets. It's the building block of choice for off-grid properties that need scalable, reliable energy storage — start with one unit and expand by adding more racks as demand grows, up to 32 units in parallel.
Constructed from 16 Grade A EVE LiFePO4 cells with a 100A PACE BMS, this battery delivers 4,000 cycles at 80% depth of discharge. The built-in LCD touchscreen lets you configure inverter protocols and monitor state of charge directly on the unit — no separate hardware needed. An integrated heating system allows safe charging in cold UK conditions, down to -20°C ambient.
Pre-loaded inverter protocols mean genuine plug-and-play compatibility with Victron, Pylontech, Sofar, Growatt, Solis, and Goodwe — no manual configuration required.
Key Specifications:
Capacity: 5.12kWh (100Ah)
Nominal Voltage: 51.2V
BMS: 100A PACE
Built-in 125A DC breaker
Cycle Life: 4,000 at 80% DoD
Heating: Built-in, charges to -20°C
Display: LCD touchscreen
Max parallel: 32 units
Form factor: Standard server rack
Warranty: 10 years
Compatible inverters: Victron, Pylontech, Sofar, Growatt, Solis, Goodwe
Sourced from Fogstar — UK manufacturer with UK-based technical support and warranty.