Sunny Boy Storage 3.8-US / 5.0-US / 6.0-US - SMA Smart Connected
Sunny Boy Storage 3.8-US / 5.0-US / 6.0-US

Sunny Boy Storage 3.8-US / 5.0-US / 6.0-US Where to Buy

The Sunny Boy Storage battery inverter has been precisely engineered to serve as the intelligent interface between PV, the electrical grid and industry-leading high-voltage batteries. Its AC coupled architecture enables installation at any point in time, providing greater flexibility and giving installers the opportunity to generate new business with existing customers. Along with its ability to address the large retrofit market of existing PV systems, it also delivers the most costeffective, versatile and innovative residential storage solution available. Additionally, up to 2000 W of convenience power can now be achieved in the event of a grid outage during both day and night thanks to SMA’s proprietary Backup Lite feature. Whole home backup is also available with the SMA Automatic Backup Unit.

Learn more about home energy storage solutions


  • AC coupled for new PV systems or retrofitting existing systems
  • Compatible with many leading high-voltage batteries

Simple & Flexible

  • Quick and easy installation
  • Multiple configuration options with the ability to expand


  • High level of system integration provides unmatched monitoring and control
  • Three separate DC inputs allow for maximum power and energy capacity

Multiple Use Cases

  • Backup power options for whole home or protected loads
  • Solutions for energy management, zero export, and demand charge avoidance

SMA Energy System Part 1: Installation of Sunny Boy Storage

The new Sunny Boy Storage grid-tied battery inverter, the keystone of the SMA Energy System, is easy to connect to multiple high voltage lithium ion batteries. It includes the Backup Lite function and all communications options of the Sunny Boy line.

SMA Energy System Part 2: Commissioning of Sunny Boy Storage

Commissioning of the new Sunny Boy Storage grid-tied battery inverter, the keystone of the SMA Energy System, is a straightforward process using the built in user interface of the inverter and the BYD Battery Box HV.

Now the user manual is also available as