SMA Sunny Island 4548-US Battery Inverter

SMA Sunny Island 4548-US Battery Inverter


SMA Sunny Island inverters are based on the same proven inverter technology the brand is known for. The Sunny Island 4548-US is an off-grid inverter boasting an impressive 96% maximum efficiency and is a complete power system capable of handling critical loads as well as intelligently managing your batteries.

  • 96% efficiency
  • Able to control connected diesel generators
  • Expandable to power up to 100 Kw
  • Intelligent charge control to extend battery life
  • Perfect for off-grid or grid backup systems

Up to 12 Sunny Island units can be connected together to create an off-grid system up to 100kW providing continuous reliable power to your home. Combining the SI 4548-US with a generator allows for back-up battery charging.

When a Sunny Island unit is coupled with a Sunny Boy grid-tie inverter the system becomes an AC coupled system, allowing your PV array to power your loads, charge your battery bank, and feed excess power back to the grid.



  • Dimensions (LxWxH): 24.1 × 18.4 × 9.3 inches
  • Weight: 139 lbs
  • Intelligent battery management
  • Maximum efficiency of 96%
  • Charge level calculation
  • Built in LCD display
  • Connectable in parallel and modularly expandable
  • Extreme overload capability
  • Free Sunny Portal monitoring with global access
  • Comprehensive SMA communications and data collection options
  • SMA power balancer for three-phase grid connection
  • Wall mounting plate with anti-theft lock
  • Isolation monitoring
  • DC reverse polarity protection
  • DC fuse
  • AC short-circuit
  • Overtemperature / battery deep discharge prevention
  • LED indicator for malfunction
  • Ground fault protection
  • MPN: SI4548-US-10

Data Sheet:

Sunny Island 4548-6048-US-10 Data Sheet


SMA Warranty Information

Installation Guide:

SMA Sunny Island Installation Manual


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