Lion Energy Sanctuary 3 Energy Storage System (AC ESS)

Lion Energy Sanctuary 3 Energy Storage System (AC ESS)The Sanctuary 3 Energy Storage System is a powerful, quiet, and fully automated whole home backup solution designed for modern, high demand households. With an 18kW grid interactive inverter and advanced LiFePO battery technology, it delivers seamless power during outages without fuel, noise, or manual switching. Built to scale, Sanctuary 3 grows with your energy needs, offering long runtime, high output, and intelligent energy management. Features

The Sanctuary 3 Energy Storage System is a powerful, quiet, and fully automated whole-home backup solution designed for modern, high-demand households. With an 18kW grid-interactive inverter and advanced LiFePO₄ battery technology, it delivers seamless power during outages without fuel, noise, or manual switching. Built to scale, Sanctuary 3 grows with your energy needs, offering long runtime, high output, and intelligent energy management.

Features

• Whole-home backup power with instant automatic switchover
• Silent operation with no fuel or emissions
• High-output 18kW split-phase inverter
• Scalable inverter and battery expansion
• Supports HVAC, large appliances, and critical loads
• Advanced LiFePO₄ battery technology
• Grid-interactive with generator and AC-coupled solar support
• Designed for indoor or outdoor shaded installation
• Low maintenance, long service life

Specifications

System

• Max Parallelable Inverters: 4
• Max Parallelable Batteries: 15
• Max Parallelable Output Power: 48kW
• Max System Capacity: 215.6kWh
• Max System Weight: 4,225 lbs
• Max Parallelable Circuit Protective Device: 240A
• Usable Capacity: 80%
• Single Cycle Round Trip Efficiency (SCRTE): 89%
• Battery State of Health at End of Warranty: 70%
• Humidity Rating: 0–95%
• Altitude Rating: 0–4,000m, derating above 2,000m
• Ingress Protection: NEMA 3R, IP65
• Max Internal Fault Current Rating: 1,800A
  

Inverter – Sanctuary 3 (18kW Grid-Interactive)

• Rated Power (On-Grid): 18kW
• Max Apparent Power: 19.8kVA
• Nominal AC Output Current: 75A
• Max AC Output Current: 82.5A
• Output Voltage: 120 / 240V split-phase
• Grid Frequency: 60Hz
• Max Grid Pass-Through: 200A
• Off-Grid Output Power: 12kW
• Power Factor Range: 0.8–1
• Output THD: <2%
• Maximum Output Fault Current: 71.3A (1 cycle), 724A (5 cycles)
• PV Input Power: 18kW
• MPPT Voltage Range: 120–430V
• Max PV Input Voltage: 600V
• Max Short Circuit Current per MPPT: 22A
• Battery Voltage Range: 40–58.4V
• Max Charging Current: 250A
• Max Discharging Current: 260A
• Max Efficiency: 96.5%
• Rapid Shutdown: Tigo RSS Transmitter
• Arc Fault Protection: AFCI, PV DC Arc
• Dimensions: 51.5" × 19.5" × 10.43"
• Weight: 184 lbs

Battery – Sanctuary 3 (14.3kWh)

• Battery Type: Lithium Iron Phosphate (LiFePO₄)
• Rated Voltage: 51.2VDC
• Voltage Range: 40–58.4VDC
• Capacity: 14.3kWh
• Operating Temperature (Charge): 32°F to 113°F
• Operating Temperature (Discharge): -4°F to 140°F
• Derating: Below 50°F, Above 104°F
• Dimensions: 44.91" × 18.50" × 10.43"
• Weight: 290 lbs

Certifications & Compliance

• ESS System: UL 9540
• Inverter: UL 1741, UL 1741 SB, IEEE 1547-2018, IEEE 1547.1-2020, FCC Part 15 Class B, UL 1699B
• Battery: UL 1973, UL 9540A

Other Details

• Supports generator or AC-coupled solar connection, single source only
• Auto-start generator functionality supported
• Install in shaded, well-ventilated locations only
• High-voltage system, electric shock risk
• Capacitors retain hazardous energy, do not touch
• Read all instructions before installation, operation, or maintenance