Name: SUNNY ISLAND MASTER SI6H-12 6kW BATTERY INVERTER
SKU: 22138
Availability: InStock

Key Features

6 kW single‑phase battery inverter for off‑grid, backup, and self‑consumption solar systems with battery integration.
48 V DC battery input compatible with lithium‑ion, lead‑acid, VRLA and other battery types (wide capacity range).
High overload capability — up to 6 kW for 30 min and peak boosts when needed.
Supports grid, generator and standalone operation for flexible system design.
Advanced communication interfaces like WLAN, Ethernet and Webconnect for remote monitoring and setup.
IP54 protection rating suitable for harsh environments and outdoor installation.
Efficient conversion with maximum efficiency around 95.8 %.
Flexible energy management integrated into SMA Smart Home / Sunny Portal ecosystem.
Expandable and modular — can be used in clusters or with other Sunny Island units for larger systems.

Product Description

The SUNNY ISLAND MASTER SI6H‑12 6 kW Battery Inverter by SMA is a robust and flexible single‑phase battery inverter designed to serve as the central power conversion and energy management unit in solar storage, off‑grid, and backup power systems. Engineered to deliver reliable AC power from battery storage while maximizing self‑consumption of solar energy, this inverter provides a comprehensive solution for homes, small businesses, and hybrid systems seeking greater energy independence and resilience.

At its core, the Sunny Island SI6H‑12 converts DC power from a 48 V battery bank into high‑quality AC power at 230 V and 50 Hz, making it suitable for standard household and commercial electrical loads. In typical operation, it provides a continuous output of around 4.6 kW with the ability to deliver peak outputs up to 6 kW for short durations when required — perfect for handling startup surges from motors or heavy loads. It can also sustain higher outputs for brief periods to support demanding equipment without compromising safety or stability.

The inverter is designed to work seamlessly in both on‑grid and off‑grid environments. When connected to the utility network or a standby generator, it supports increased self‑consumption of solar power and can manage power flow between solar arrays, batteries, and loads intelligently. In standalone or emergency scenarios, it transitions to backup mode to keep essential loads powered independently of grid availability.

Flexibility is a hallmark of the Sunny Island design. It supports a wide range of battery types — including Lithium‑ion, lead‑acid, and VRLA — and large battery capacities, enabling tailored system design from modest installations to substantial standalone systems. Its DC input range accommodates voltages from approximately 41 V to 63 V, and it delivers robust charging and discharging currents that help maintain battery health and system performance.

The SI6H‑12 integrates modern communication and monitoring features, including WLAN and Ethernet/Webconnect, so users can configure, monitor, and manage system performance from a smartphone, tablet or computer — making it easy to stay in control of energy usage and system status.

Built for real‑world conditions, the Sunny Island inverter boasts an IP54 protection rating and a wide operating temperature range, ensuring reliability in varied environments. It also offers high overload capability and supports modular expansion — allowing parallel operation with additional units to scale capacity for larger installations.

With its blend of power reliability, flexible battery integration, smart energy management, and communication features, the SUNNY ISLAND MASTER SI6H‑12 6 kW Battery Inverter is an excellent choice for anyone looking to integrate battery storage into their solar energy system or create a resilient off‑grid or backup power setup.