SMA Sunny Island SI 4.4M-11 battery inverter for grid-connected
battery storage, backup power and off-grid applications. The Sunny
Island takes over the energy and battery management of a connected 48
V battery system and charges and discharges the storage system
bidirectionally.
The device is suitable for PV storage systems and self-sufficient
energy supplies and offers a high short-term overload capacity for
consumers with increased inrush current. The AC nominal power is 3.3
kW at 230 V and 50 Hz, on the battery side it operates with a nominal
voltage of 48 V and a rated discharge current of 75 A.
The version with IP54 protection is designed for stationary energy and
storage systems. A battery storage system is not part of the offer.
TECHNICAL DATA
Manufacturer: SMA Solar Technology AG
Type: Sunny Island SI 4.4M-11
Device type: Battery inverter
Serial Number: 1261039450
Nominal power: 3,300 W
Power 30 min at 25 °C: 4,400 W
Power 5 min at 25 °C: 4,600 W
Peak power 3 s: 5,500 W
Battery Nominal Voltage: 48 V DC
Battery voltage range: 41 to 63 V DC
Rated discharge current: 75 A
Rated charging current: 63 A
Max. battery charging current: 75 A
AC Nominal Voltage: 230V
Frequency: 50 Hz
AC Rated Current: 14.5A
Max. AC Input Current: 50 A
Power factor cos phi: -1 to +1
Efficiency: max. approx. 95.5 %
Degree of protection: IP54
Protection class: I
Battery types: Lead and released lithium-ion
Marking: CE, GS
Production: Made in Germany
WHAT'S IN
THE BOX
SMA Sunny Island SI 4.4M-11 including connected cables, external main
switch, connection and distribution box, and other connected material
shown.
Auction-ID: A1-50599-333
