SMA Grid connection inverters


The Sunny Boy Storage is the interface to work with high-voltage batteries from important reputable manufacturers. With a charge and discharge power between 2.5 to 6.0 kW, it is ideally suited to handle electricity demand of a private household.

More sun for the home
Storing solar energy simply and cost-effectively

The Sunny Boy Storage is the right solution for people who want to make their home independent from conventional electric utility companies and rising electricity costs by using intermediate storage for their solar energy. This gives you maximum flexibility both now and in the future.

A smart combination
Flexible and cost-effective system design around the clock

With the Sunny Boy Storage, customers benefit from markedly reduced system and installation costs and flexible applications. Thanks to AC coupling, the battery inverter can be installed or expanded in any location, at any time, regardless of whether or not there is already a PV system installed. The Sunny Boy Storage is a true jack-of-all-trades, one that uses high-voltage technology to make it cost-efficient and light weight. It also uses just a few components, because the most important functions for intelligent battery management are already integrated. This makes the Sunny Boy Storage the ideal choice for putting more sun in your electricity supply.


  • For new and existing systems: reduced installation costs, can be retrofitted and expanded at any time, as needed
  • For almost all PV system types: string inverters, module inverters and power optimizers
  • Can be combined with numerous types of energy: PV, wind energy, combined heat and power plants
  • Choice of lithium-ion battery (currently Tesla Powerwall, additional batteries to follow shortly)


  • Most cost-effective AC-connected battery inverter on the market
  • 97% efficiency allows for optimal use of cached energy
  • Maximum PV yields while meeting all applicable regulations for feed-in limits (e.g., EEG, KfW 275, Zero Export)

Easy to use

  • Quick and straightforward one-person installation.
  • Simple installation using a smartphone or tablet via WLAN and an intuitive web interface
  • Everything at your fingertips thanks to its direct connection to Sunny Portal / Sunny Places

Keep up with everything
The right solution, now and in the future

Systems with the Sunny Boy Storage can be flexibly adapted to individual needs at any time. Whether the family situation changes, perhaps with the purchase of an electric car, which needs charging daily, or with a swimming pool in the garden for pleasure–with the Sunny Boy Storage, storage systems and PV systems can always be designed or expanded to suit specific requirements. The battery inverter is also versatile when it comes to the method of generating energy. From the photovoltaic system and the wind turbine system to the combined heat and power plant, anything is possible.For a secure electricity supply at any time.

Suitable for any initial situation

New installation: PV system with battery storage

Would you like to be independent from conventional power generators and rising energy costs? The Sunny Boy Storage is a great, cost-effective solution. You can install a storage system with the lowest-possible costs and just a few components. You can start storing the energy from the sun—quickly and simply.

Modernize: PV system with battery storage

Are you still feeding valuable energy into the grid with your PV system, even after the feed in-tariff has expired? Then simply use a storage system to be able to use the energy you produce yourself. You’ll benefit from reduced energy purchases and enjoy greater independence from your electric utility company. You only need three additional components:
With the Sunny Boy Storage, the battery and the Energy Meter, you can turn your existing PV system into a full-fledged storage system.*

Expand: Align an existing PV storage system with increasing demand

Would you like to expand your existing system to handle additional loads with solar energy? Not a problem for systems with the Sunny Boy Storage. You can expand your PV system retroactively at any time to meet your energy needs, independent from the storage system.*


* For PV inverters without Speedwire / Webconnect, it makes sense to integrate the Sunny Home Manager into the system.

  Sunny Boy Storage 2.5
Conexión CA
Potencia nominal 2500 W
Potencia máx. aparente 2500 VA
Tensión nominal 220 / 230 / 240 V ( 180 a 280 Vac)
Frecuencia 50 / 60 Hz ( - 5 a + 5 Hz)
Tensión de red 230 V
Frecuencia de Red 50 Hz.
Corriente CA máx. 11 A
Factor de potencia a potencia nominal 1
Factor a desfase ajustable de 0,8 inductivo hasta 0,8 capacitativo
Fases de inyección / conexión 1 / 1
Conexión CC Batería
Potencia máxima (con cos φ =1) 2650 W
Tensión máxima 500 V
Rango tensión 100 a 500 V
Tensión nominal 360 V
Tensión mínima / arranque 100 V
Intensidad máxima 10 A
Corriente de cortocircuito máx. 18 A
Tipo de batería Iones de Litio *
Rendimiento máximo ∼97,0%
Rendimiento europeo ∼96,5%
Consumo sin carga / en reposo ≤10 W / ≤2 W
Dispositivos de protección
Punto de desconexión en la entrada No
Monitorización de toma a tierra Si
Monitorización de toma de red Si
Protección contra inversión de polaridad No
Resistencia al cortocircuito de CA Si
Resistencia al cortocircuito de CA con separación galvánica No
Unidad de seguimiento de la corriente residual sensible a la corriente universal Si
Clase de protección según IEC 62103 I
Categoría de sobretensión según IEC 60664-1 III
Datos Generales
Dimensiones ( an x al x prof ) 450 x 357 x 122 mm
Peso 9,2 Kg
Rango de temperatura - 40ºC a 60ºC
Emisión sonora < 25 dB
Topología Sin transformador
Sistema de refrigeración Convección
Grado de protección según IEC 60529 IP65
Clase climática según IEC 60721-3-4 4K4H
Humead máxima (sin condensación) 1
Equipamiento / Función / Accesorios
Conexión CC / CA Conector / Conector
Servidor Web Integrado Si
Interfaces Ehternet / WLAN
Protocolos de comunicación ModBus (SMA, Sunspec), Webconnect
Comunicación con la batería CAN Bus
Limitación de la potencia activa dinámica integrada Si
Garantía 10 Años
Sunny Home Manager Opcional
SMA Energy Meter Opcional


  Sunny Boy Storage 3.7 Sunny Boy Storage 5.0 Sunny Boy Storage 6.0
AC Connection    
Rated Power 3680 W 5000 W 1) 6000 W 1)
Overload capacity (at 25ºC to max. 60 sec) 2) 4600 W 6300 W 7500 W
AC nominal current output 16 A 21,7 A 3) 26 A
Nominal voltage 230 (172 to 264,50 V)
Frequency 50 / 60 Hz ( 45 to 65 Hz)
Adjustable displacement power factor 0,8 overexcited to 0,8 underexcited
Feed-in phases / connection phases 1 / 1
Battery DC input    
Max. DC voltage 600 V 600 V 600 V
DC Voltage range 100 to 500 V 100 to 500 V 100 to 500 V
DC rated voltage 360 V 360 V 360 V
Start DC voltage 100 V 100 V 100 V
Max. DC Current / Number of DC inputs 10 A / 3 x 10 A 10 A / 3 x 10 A 10 A / 3 x 10 A
Max. DC short-circuit current 40 A 40 A 50 A
Battery type Li-ion 4) Li-ion 4) Li-ion 4)
Max. Efficiency 97,5 % 97,5 % 97,5 %
Protective devices    
Ground fault monitoring Yes Yes Yes
Grid monitoring Yes Yes Yes
DC reverse polarity protection Yes Yes Yes
AC short-circuit current capability Yes Yes Yes
All-pole-sensitive residual-current monitoring unit Yes Yes Yes
Protection class according to IEC 62103 I I I
Overvoltage category according to IEC 60664-1 IV IV IV
General data    
Dimensions ( W x H x D ) 535 x 730 x 198 mm
Weight 26 Kg
Temperature range - 25ºC to 60ºC
Self-consumption standby / self-consumption with no load < 5 W / < 10 W (without supply for batteries or grid switching unit)
Topology Transformerless
Cooling method Convection
Degree of protection according to IEC 60529 IP65
Climatic category according to IEC 60721-3-4 4K4H
Max. permissible value for relative humidity (non-condensing) 100 %
Features / function / accessories
Interfaces Ehternet / WLAN / CAN / RS485
Battery communication CAN Bus
Display / Web User interface Integrated webserver / via Smartphone, tablet or laptop
Remote monitoring Sunny Portal via Webconnect
Warranty 5 / 10 Years with registration in Sunny Portal
Sunny Home Manager / Home Manager Optional
SMA Energy Meter Optional


1) VDE: AR-N 4105; PAC, r 4600 W; Smax 4600 VA
2) Solo en el funcionamiento de la corriente de repuesto con un equipo de conmutación; la capacidad de sobrecarga depende de la batería empleada
3) AS4777: Iac máx.: 21,7 A
4) Baterías aprobadas por SMA, como LG Chem, BYD, etc. (consulte

Catálogo General 2020

  • SMA-Sunny-Boy-Storage.jpg
  • Sunny Boy Storage 0.jpg
  • Sunny Boy Storage 1.jpg
  • Sunny Boy Storage y LG.jpg
  • SMA-Sunny-Boy-Storage-1.jpg

Do you want more information about this product?  |  (+34) 965 560 025  |  Skype