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Sunpura is built around quality and long-term reliability. Our products are backed by a manufacturer warranty, giving you support beyond the point of purchase.
You can find the exact warranty period and applicable terms on the product page or in the warranty information. If you need to make a warranty claim, please contact contact@sunpuraenergy.com and include your order number.
This warranty is in addition to your statutory consumer rights.
We are here to support you after your purchase as well.
If you have questions about installation, setup or using your Sunpura products, our support team can help. Email us at contact@sunpuraenergy.com.
The Sunpura GridBox is central connection equipment for compatible Sunpura battery configurations.
UK availability, electrical specifications, compatible batteries, EV-charger support and installation requirements must be confirmed before purchase. Installation must be carried out by a suitably qualified professional in accordance with applicable UK requirements.

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Answers to key questions about the Sunpura GridBox: multi-battery systems, three-phase expansion, EV charging, installation, additional costs and grid-connection requirements.
Usually not. GridBox is not required for a single compatible battery system. It becomes relevant when you move to a larger multi-unit or three-phase configuration, or when a supported EV-charging setup is part of the system design.
Supported smaller Sunpura configurations can use wireless multi-system coordination. GridBox is the central connection equipment for larger grid-tied setups that need multiple units, a three-phase architecture or supported EV-charging integration. The correct route depends on the battery model, system topology and installation.
GridBox is intended for compatible larger Sunpura systems where several battery units need to be connected centrally, including single-phase or three-phase parallel architectures and supported EV-charging scenarios. It is not a default requirement for every home battery installation.
GridBox is electrical connection equipment for higher-power grid-tied systems. In the UK, the installation and associated distribution-board, three-phase or EV-charging work should be assessed and carried out by a suitably qualified electrician. Your installer should also confirm the applicable DNO connection process.
Yes. Depending on the property, additional protection devices, cabling, distribution-board work or other electrical changes may be required. A pre-installation assessment helps identify technical requirements and additional costs before you order.
The current GridBox specification supports compatible single-phase and three-phase EV-charging scenarios, including up to 7 kW single-phase and 22 kW three-phase charging. The usable rating depends on the charger, property supply, protective devices and complete system design, so the installation must be checked before purchase.
They distinguish supported single-phase 230 V and three-phase 400 V connection routes. The correct connection depends on the GridBox version, the property supply and the connected load. Follow the current installation documentation rather than selecting a connection by colour alone.
The current GridBox brochure specifies up to 22 kW three-phase grid input and up to 22 kW three-phase output, with a maximum three-phase output current of 32 A. Supported single-phase EV charging is specified at 7 kW. Actual usable power depends on the connected batteries, EV charger, property supply and installation limits.
GridBox is connection equipment rather than the tariff-optimisation engine. In a compatible Sunpura system, metering, battery control and supported software features can use tariff information to influence charging and discharging. Any saving depends on the tariff, electricity use, solar generation and system configuration.
The current GridBox brochure states that grid-tied parallel operation does not require additional communication cables. The electrical installation must still follow the current GridBox documentation and applicable UK requirements.
GridBox forms part of a wider Sunpura energy system. Metering and software features are provided by the compatible batteries, meters and control components in the installation. Available monitoring and automation therefore depend on the complete system configuration rather than GridBox alone.
The current GridBox specification supports grid-tied parallel operation of up to six compatible units. If you expand later, have the installer check the resulting power, capacity, protection settings and whether the DNO or other installation information needs to be updated.
Yes. Additional cabling, protection devices, distribution-board work, wall penetrations or EV-charger integration may be required depending on the property. Have a suitably qualified electrician assess the installation before purchase if you need an accurate installed-cost estimate.
It depends on the final UK grid-connected configuration. Your installer should determine the appropriate DNO process for the combined generation and storage system, including any existing solar PV. GridBox does not remove those connection requirements.
GridBox is specified as IP54 and designed for wall mounting. Install it in an environment permitted by the current installation manual. IP54 is not a blanket statement that every exposed outdoor location is suitable.
Current brochure highlights include grid-tied parallel operation for up to six compatible units, up to 22 kW three-phase grid input and output, 32 A maximum three-phase output current, six Sunpura inputs rated up to 3.6 kW each, 230 V battery-side input, 230/400 V load connection, IP54 protection and wall mounting. Listed weight is 16.4 kg. Always use the latest datasheet for installation design.