Lion Energy Sanctuary 2 Indoor - Inverter and Battery System

Lion Energy Sanctuary 2 – Home Energy Storage System

The Lion Energy Sanctuary 2 is a powerful, fully automated home energy storage system designed to keep your home running during power outages. Built with advanced LiFePO₄ battery technology and a hybrid grid-support inverter, it delivers reliable, quiet, and maintenance-free backup power.

When the grid goes down, the system instantly switches to battery power — keeping your lights, refrigerator, furnace, Wi-Fi, and essential appliances running without noise, fuel, or manual intervention.

Designed for indoor installation, the Sanctuary 2 is ideal for whole-home or essential-load backup and can be expanded as your energy needs grow.

Key Features

•  Automatic Backup Power
  Instant seamless transition to battery power during outages — no fuel, no noise, no manual transfer switch required.
•  Expandable Energy Capacity
  14.3kWh (1 battery)
  28.6kWh (2 batteries)
  42.9kWh (3 batteries)
  Expandable up to 43kWh total capacity per inverter.
•  Powerful 8kW Output
  8kW nominal output power
  8.8kW max apparent power
  120V / 240V split-phase output
  Supports essential circuits or larger home loads.
•  Solar & Generator Compatible
  Supports solar PV input (up to 500V)
  Compatible with AC-coupled solar systems
  Generator compatible (single source input)
•  High-Efficiency Performance
  97.8% max inverter efficiency
  89% round-trip system efficiency
  100A grid pass-through capability
•  Safe & Long-Lasting LiFePO₄ Batteries
  14.3kWh Lithium Iron Phosphate modules
  Long cycle life and stable performance
  Advanced Battery Management System (BMS)
  UL certified for safety
•  Smart Monitoring
  Monitor performance, track usage, and manage settings via Lion Energy mobile and desktop app.
•  Indoor-Rated Design
  Type 3R, IP65 inverter rating
  Designed for shaded indoor installations
  Silent operation with no emissions

System Configurations

• Sanctuary ESS 12-14.3 – 400 lbs
• Sanctuary ESS 12-28.6 – 690 lbs
• Sanctuary ESS 12-42.9 – 980 lbs
• Single Cycle Round Trip Efficiency (SCRTE): 89%
• Installation: Install in shaded locations. Do NOT install in direct sunlight.

Major System Components

• Lion Hybrid Inverter – 12kW Grid Support Interactive Inverter
• Lion LFP Battery – 14.3kWh

PV Input

• Max PV Input Power: 12kW
• MPPT Input Voltage Range: 120–500V
• Max Input Current per MPPT: 14A × 4
• Max Short Circuit Current per MPPT: 22A
• AC Solar Max: 8kW

AC Output (On-Grid)

• Nominal Output Power: 8kW
• Max Apparent Power Output: 8.8kW
• Nominal AC Output Current: 33.3A
• Max AC Output Current: 36.7A
• Output Voltage Range: 120V / 240V Split Phase
• Grid Frequency: 60Hz
• Max Grid Passthrough: 100A
• Output THDI: < 3%
• Maximum Output Fault Current:
  • 71.5A (1 Cycle)
  • 72.0A (3 Cycles)
  • 72.4A (5 Cycles)

AC Output (EPS / Backup)

• Nominal Output Power: 8kW
• Power Factor Range: -0.8 to +0.8
• EPS Voltage Range: 110–120V / 220–240V Split Phase
• EPS Frequency: 60Hz
• Output THDU: < 2%

Battery Interface (Inverter Side)

• Battery Voltage Range: 40V–60V
• Max Charging Current: 190A
• Max Discharging Current: 190A

GEN / AC-Coupled PV Connection

• Terminals: L1, L2, N, PE (Split-Phase 120/240V)
• Source: Single source only — generator or AC-coupled solar
• Max Apparent Power: 8kW per inverter
• Auto-Start: Supported

General Inverter Data

• Humidity: 0–95%
• Ingress Protection: Type 3R, IP65
• Max Efficiency: 97.8%
• PV DC AFCI: Type 1
• PVRSS: Tigo RSS Transmitters (RS2)
• Weight: 110 lbs
• Dimensions (H × W × D): 33.6” × 18.50” × 10.08”
• Compliance: UL9540, UL1741:2021, UL1741 SB:2021, UL1741 SA:2018, UL1699B:2018, IEEE 1547:2018, IEEE 1547a:2020, IEEE 1547.1:2020, CPUC Rule21:2017, FCC 15 Class-B

Lion LFP Battery – 14.3kWh

• Battery Type: Lithium Iron Phosphate
• Voltage Range: 40–58.4VDC
• Rated Voltage: 51.2VDC
• Capacity: 14.3kWh
• Usable Capacity: 90%
• SCCR (Isc Rating): 2040A / 7ms
• Parallelable Capacity: 43kWh Max
• Max Parallelable Overcurrent Protective Device: 240A
• Max Quantity in Parallel: 3
• Charging Temperature Range: 32ºF–131ºF / 150A
• Discharging Temperature Range: -4ºF–131ºF / 160A
• Derate Range: Below 50°F, Above 104°F
• Weight: 290 lbs
• Dimensions (H × W × D): 44.4” × 18.50” × 9.75”
• Compliance: UL1973, UL9540, UL9540A