The Sunpura S2400 AC is an AC-coupled plug-in home battery for existing solar and home energy systems. It is designed for households that already generate solar power and want to increase self-consumption without rebuilding the entire solar setup.
The S2400 AC works without direct PV input. Instead, it is integrated on the AC side of an existing energy system, making it a flexible retrofit option when you want to add battery storage to an installed solar setup.
If your existing solar panels already produce more energy than you can use at certain times, the S2400 AC gives you a practical route to store more of that energy and use it later. It is especially relevant for households looking for smart self-consumption, flexible expansion and app-based energy control.
Performance and savings depend on your solar system, tariff, household loads, installation conditions and compatible metering setup.
We deliver your order directly to your home. Shipping costs and delivery times vary depending on your location (usually 3–7 business days). Alternatively, you can collect your order free of charge from our warehouse in Bochum, Germany. Choosing direct local pickup not only saves you from international shipping fees but also allows you to benefit from highly favorable local purchase conditions and direct transaction advantages.
Further details can be found in our [Shipping Policy].
Your satisfaction is our top priority. We will fully refund the purchase price for undamaged products returned within 30 days.
As soon as we receive and inspect your return, we will issue the refund. Further details can be found in our [Right of Withdrawal].
Sunpura stands for quality and durability. Our products are backed by a manufacturer's warranty to ensure you are on the safe side even after your purchase.
The exact warranty period and terms can be found on the product page or in the warranty information. In the event of a warranty claim, please contact us at contact@sunpuraenergy.com and provide your order number.
We are also here for you after your purchase.
Do you have any questions about the installation, setup, or use of your Sunpura products? Our support team is happy to help. Please write to us at contact@sunpuraenergy.com.
With the Sunpura S2400, you can store surplus solar power, increase self-consumption and use energy when it is most valuable in your home.
The improved economics come not from storing energy alone, but mainly from using it more intelligently at the right time.
Self-generated electricity is used more often in your own home instead of being exported under unfavourable conditions.
Stored energy is also available in the evening, at night or when generation is lower.
With time-of-use tariffs and smart devices, energy is used when it makes the most economic sense.
Use your stored solar power when grid electricity is most expensive. Increase your savings potential by combining the system with a time-of-use electricity tariff
Designed for households that already generate solar power and want to use their self-consumption more intelligently with AC-coupled battery storage.
Already generating solar power? The S2400 AC adds battery storage to your existing system and makes surplus energy usable later in the home.
The S2400 AC is designed for AC-side integration and is especially suitable for systems where solar panels and an inverter are already installed.
Use cheaper price windows more strategically and use stored energy when grid electricity is more expensive.
Combined with a Smart Meter and app, the S2400 AC detects consumption, grid import and battery storage demand more transparently.
The S2400 AC is designed for homes that already generate solar power. It stores energy on the AC side and makes it available later — depending on consumption, metering data and your electricity tariff.
Your existing solar installation or plug-in solar system generates power as usual. When more energy is available than is currently consumed, the S2400 AC can store it for later use.
In the evening, at night or during more expensive tariff periods, the S2400 AC can provide stored energy and help reduce grid import more precisely.
The S2400 AC is more than retrofit battery storage. Through the off-grid output, it can power selected loads when the grid goes down — depending on battery level, output and connected load.
During a power cut, the S2400 AC can keep important devices running through the off-grid output. Ideal for selected loads such as routers, lighting, chargers or smaller household appliances.
Powers selected loads when the grid goes down.
Suitable for selected loads such as lights, internet equipment, chargers or smaller household appliances.
Supports short-term peak loads through the off-grid output.
Sicherheit
Integrated protection functions support safe operation under overcurrent, overvoltage, short-circuit and temperature deviation conditions.
Wetterfestigkeit
The IP65 housing supports flexible installation locations, provided installation and environment follow the product requirements.
Systemschutz
Battery and system monitoring help keep operation stable, transparent and suitable for everyday use.
Sunpura analysiert electricitypreise, Solarertrag and consumption in real time – and steuert energy flows automatisch for more self-consumption, more Kontrolle and more Ersparnis.
View solar power, consumption, battery level and electricity prices in one place. The Sunpura app helps you understand energy flows and control compatible devices more intelligently.
Track how much electricity your solar panels generate, how much your home consumes and when the battery charges or discharges.
Charge more strategically during cheaper price windows and use stored energy when electricity is more expensive.
The system helps use more solar power in your own home instead of exporting surplus energy unused.
Connect compatible meters and smart loads for more automation in everyday use.
Sunpura HEMS supports integration with time-of-use tariffs, compatible energy providers, Smart Meter, Smart Plug and smart home systems — for more precise control and better use of solar power, battery storage and grid electricity.
Actual optimisation depends on system configuration, compatible metering, energy contract, consumption profile and local installation conditions.
The S2400 AC is designed for homes that already use a PV system or plug-in solar and want to add AC-coupled battery storage. The exact integration depends on the existing system, meter setup, consumer unit space and local connection requirements.
First check whether your existing plug-in solar system, solar installation and meter setup are suitable for an AC-side battery storage solution.
A compatible Smart Meter helps measure consumption, surplus and grid import more precisely and use battery storage control effectively.
After setup, battery behaviour, consumption data and time-of-use tariff logic can be controlled more transparently through the Sunpura app.
Note: the exact installation process may vary depending on the existing PV system, inverter, meter location, accessories and local connection requirements. Always follow the official product documentation and safety instructions. If unsure, consult a qualified professional.
The key components for getting started with your AC-coupled battery storage. Actual contents may vary depending on the selected variant or kit configuration.
A2400 AC*1 +B2400*1
5m AC cable ×1
Rear mounting block ×2
M5×12 combined Phillips screws ×18
M8×80 self-tapping expansion screws
Rear mounting bracket ×1
Rear mounting block ×2
Documents
Note: images and quantities may vary depending on the selected bundle, accessories and delivery batch. The product configuration in the cart is decisive.
All key performance, battery and system data for the Sunpura S2400 AC at a glance.
All important Sunpura S2400 AC documents at a glance — from user manual and technical data to certificates.
Answers to the key questions around S2400 AC, AC battery storage retrofit, existing plug-in solar systems, Smart Meter, time-of-use tariffs, zero export and backup power.
Yes. The Sunpura S2400 AC is designed as AC-coupled battery storage for retrofitting. It is especially suitable for homes that already use plug-in solar or a PV system and want to use surplus energy later in the home. This lets you keep your existing solar setup without redesigning the solar side completely.
The S2400 is the version with direct PV input and integrated battery storage. The S2400 AC is the AC-coupled version without direct PV input. It is especially useful when solar panels and an inverter are already installed and you want to add battery storage to the existing system.
No. The S2400 AC does not have direct PV input. It is designed for AC-coupled applications and works on the AC side of your energy system. If you want to connect solar panels directly to the battery, the Sunpura S2400 is the more suitable version.
The S2400 AC is intended for existing PV systems with an existing AC side. Whether the integration fits your inverter and meter setup depends on the existing system, metering solution and required functions. If you are unsure, we can check your configuration before purchase.
This depends on the existing system and the desired integration. The S2400 AC is designed as a plug & play battery storage solution, but Smart Meter setup, meter space, connection requirements or local rules may require a qualified assessment. Always read the official documents before installation and consult a professional if you are unsure.
The greatest benefit comes when the S2400 AC is used with an existing plug-in solar or PV system, because it can make surplus energy available later. Depending on the setup, it can also be used in an energy management system with compatible metering and a time-of-use tariff. The right configuration should be checked in advance.
The S2400 AC has an IP65-rated enclosure and is designed for flexible locations around the home, balcony or protected outdoor areas. A suitable location, adequate ventilation, secure mounting and compliance with product instructions are important. Indoors, the battery should be dry, accessible and kept away from heat sources or flammable materials.
An AC-coupled battery is not connected directly between the solar panel and PV input. Instead, it works on the AC side of the home. This allows the S2400 AC to complement an existing plug-in solar or PV system. With compatible metering, the system can understand energy flows more clearly and provide stored energy later when the home needs it.
The S2400 AC can be especially worthwhile if you already generate solar power but cannot always use it directly. Instead of exporting surplus energy immediately, it can be stored and used later in the home. Actual benefit depends on consumption, PV output, electricity tariff, battery size and control strategy.
Yes. This is exactly what retrofit AC-coupled battery storage is for. The S2400 AC helps you use more energy from your existing system in your own home — for example in the evening, at night or during higher grid-price periods. With Smart Meter data and the app, self-consumption can be analysed more transparently and optimised more precisely.
When used with a time-of-use tariff, the S2400 AC can help use energy more economically. The battery can be integrated into your energy management setup so lower-price windows are taken into account and stored energy is used during more expensive periods. Actual savings depend on tariff, consumption profile and system configuration.
For basic battery storage functions, the requirement depends on your exact setup. For precise self-consumption optimisation, zero export, time-of-use tariffs and better measurement of household energy flows, a compatible Smart Meter is recommended.
When connected to a compatible Smart Meter and configured correctly in the app, the S2400 AC can help reduce export to the grid and use more energy yourself. The exact result depends on your installation and local setup.
The Sunpura app supports several operating modes, including self-consumption, AI Smart Mode, custom schedules and Smart Plug control. Depending on the mode, functions such as self-consumption optimisation, time-of-use tariff use, power limiting or zero export can be implemented in different ways.
The S2400 supports connection with IR meter readers or P1 meter readers depending on system setup. Sunpura documentation lists, among others, SUNPURA SMeter-RS02, everHome EcoTracker, Tibber Pulse, HomeWizard P1 Meter, Powerfox Poweropti and IOmeter. Availability and compatibility should be checked for your market and meter type.
Yes. The S2400 AC has an off-grid output for selected loads. During a power cut, it can continue powering important devices if battery level, power demand and connection type are suitable. It should not be understood as a permanently installed whole-home backup system.
It is mainly suitable for selected loads with appropriate power demand, such as routers, lighting, chargers or smaller household appliances. The S2400 AC offers 2,400W off-grid output and up to 3,600W peak output for short periods. Which devices can sensibly be powered depends on their consumption and the battery level.
Sunpura balcony energy storage systems come with a 10-year warranty according to the relevant product and warranty terms. Technical support can also help with installation, integration, app use and troubleshooting. Please keep your proof of purchase, model name and serial number for service requests.
