Sunpura GridBox – Three-Phase Energy Hub for 4–6 Sunpura Batteries

No, generally not. The Sunpura GridBox is not a mandatory accessory for a single battery. It primarily becomes relevant if you want to expand your Sunpura system beyond a small setup—for example, to 4 to 6 batteries, three-phase power, or EV charging integration.

Small Sunpura setups can usually be expanded wirelessly. The GridBox is designed for larger system expansions where multiple compatible Sunpura batteries need to be connected centrally, three-phase power is used, or an EV charger is integrated. In short: wireless expansion is often sufficient for small setups. For a more powerful three-phase system, the GridBox acts as the central energy hub.

The GridBox is particularly suitable for users who want to centrally connect 4 to 6 compatible Sunpura batteries, build a three-phase system, integrate an EV charger, or prepare their energy storage setup for higher loads in the long term.

The GridBox is designed for more powerful grid-connected storage and EV charging scenarios. We strongly recommend having it checked and installed by a qualified electrician, especially for three-phase connections, EV charger integration, electrical cabinet modifications, or longer cable runs.

Yes, this is recommended. Depending on your home installation, additional components or adjustments may be required, such as protective devices, cable routing, wall penetrations or changes to the electrical distribution board. A professional check before purchase helps you understand possible additional costs and technical requirements more realistically.

Yes. The GridBox supports both single-phase and three-phase EV charging scenarios. Depending on the installation, 7kW single-phase charging or up to 22kW three-phase charging is possible. The precise setup depends on your EV charger, home installation and system configuration, and should be evaluated by a professional beforehand.

The blue connector is intended for single-phase 230V applications, such as single-phase charging or load scenarios. The red connector is intended for three-phase 400V applications, such as 11kW or 22kW EV charging scenarios. The right connection depends on your home installation and the load you plan to connect.

The GridBox supports up to 22kW three-phase input power and up to 22kW three-phase output power. For single-phase charging scenarios, 7kW is supported. The actual usable power depends on the installation, connected batteries, EV charger and local electrical distribution.

When combined with compatible Sunpura batteries, a Smart Meter and app control, an expanded GridBox setup can help store and use energy more strategically—for example when solar power is available or electricity prices are low. Actual savings depend on your tariff, consumption profile, PV yield and system configuration.

According to the product specifications, the GridBox supports parallel operation without additional communication cables. The batteries are integrated into the system through the provided connections. Exact installation should still follow the manual and local electrical requirements.

The GridBox is part of the Sunpura energy ecosystem. For intelligent features such as self-consumption optimization, dynamic electricity tariffs or more precise load control, additional components such as a Smart Meter and app control may be required. The available features depend on your specific system configuration.

The GridBox is designed for scalable setups with up to 6 compatible Sunpura batteries. If you expand your system later, you should have it checked whether the change affects connection capacity, storage capacity or system data that may need to be registered.

Yes. Depending on your existing home installation, additional costs may occur, for example for cables, protective components, electrical cabinet adjustments, wall penetrations or EV charger integration. We therefore recommend having the installation checked by a qualified electrician before purchase.

This depends on your system configuration and local requirements. For larger grid-connected storage or PV systems, or when power output or storage capacity changes, registration or notification may be required. Please clarify this in advance with your qualified electrician or grid operator.

The GridBox features an IP54 protection rating and is designed for wall mounting. It should be installed in a suitable environment according to the installation manual. Suitability for outdoor areas, moisture, direct weather exposure or special installation locations should be verified beforehand.

The key specifications include: up to 6 compatible Sunpura batteries, 22kW three-phase input and output power, 32A maximum output current, 6 × 3.6kW battery inputs, AC230V battery connection, AC230V / AC400V load connection, CEE connection, IP54 rating, wall mounting and 16kg weight.