Description
The Feston FES-5K-Rack is a lithium-ion solar storage battery built on safe, long-life LiFePO4 chemistry, storing 5.12 kWh of usable energy for night time use, grid failure backup, or off-grid power. It charges flexibly from either solar or the grid, with a 90% depth of discharge ensuring you get the most out of every cycle.
With a life cycle of 6000, maintenance-free operation, and support for up to 16 batteries in parallel, the FES-5K-Rack scales easily from a single home backup to a large storage bank, backed by a 10-year warranty.
Safe, scalable lithium storage for solar systems
- 5.12 kWh total capacity at 100% depth of discharge
- Safe, long-life LiFePO4 battery chemistry
- 51.2V nominal voltage with 100 Ah rated capacity
- 90% depth of discharge for maximum usable energy
- 6000 life cycles for years of dependable service
- Charges from solar or grid for flexible energy management
- Supports up to 16 batteries in parallel for easy expansion
- 50A standard charging and 100A discharging current
- Built-in protection against overcharge, under voltage, over temperature, over current, and short circuit
- Maintenance-free operation with long lifespan
- Rack design with castor wheels for stackable installation
- 10-year warranty for long-term peace of mind



