Both zero-feed and power limit functions must be enabled in the SUNPURA app.

The SUNPURA app offers four modes for users to choose from:

Self-generation and self-consumption, AI Smart Control Mode, Custom Mode, and Smart Socket Mode.

Zero-feed:

Zero-feed can be selected independently in both Self-generation and AI Smart Control modes.

Zero-feed enabled: Power generated by the device's solar panels is first supplied to home appliances; any remaining power is stored in the battery pack. If both the first two conditions are met, solar power generation is limited, and no power is fed into the grid.

Zero-feed disabled: Power generated by the device's solar panels is first supplied to home appliances; any remaining power is stored in the battery pack. If the battery is fully charged and still has power remaining, it may be fed into the grid.

Power Limit:
Power limit can be set independently in both AI Smart Control and Custom Mode.

In AI Smart Control mode, users can customize the meter's maximum charge and discharge power. The SUNPURA app automatically monitors the total power of all loads through the smart meter. For example, if the meter's maximum charge and discharge power is set to 5.5kW, the device will automatically stop charging if the total control of all loads exceeds 5.5kW.

In custom mode, users can set their own plans, which can limit the time and power of charging or feeding.

To reset the connection between the app and the storage system, you generally need to select “Unbind Device” or “Factory Reset” within the app, then restart the device and reconnect according to the pairing procedure, ensuring that the phone and device are in the same network environment for successful connection.

If the app frequently pushes alarm notifications while the storage system operates normally, this may be due to sensor false alarms, communication delays, or overly sensitive app settings; it is recommended to check the alarm threshold settings in the app, verify the device operation status, and try updating the firmware and app to reduce false alarms.

Suppose the app shows the device as offline while the storage system is actually operating normally. In that case, this may be due to an unstable Wi-Fi signal, a router blocking communication ports, or a delay in app-device synchronization. In such cases, try restarting the app or the router, and, if necessary, update the firmware to restore consistency between the app display and the device status.

If the app’s data refreshes slowly or does not update, it may be caused by network latency, unstable communication between the battery and the device, or an outdated app version. It is recommended to check the Wi-Fi signal quality, ensure the device is online, and update the app to the latest version. If the problem persists, try restarting the app or the device to restore normal data refresh.

If the app cannot connect to the storage system, first ensure that your phone and the device are on the same 2,4 GHz Wi-Fi network with a stable signal; then check whether the device is properly powered and in standby mode. If the problem persists, try restarting the router or reinstalling the app. If connection issues continue, contact after-sales technical support to check the communication module or perform remote diagnostics.

To connect a smart plug:
1)Plug the smart plug into a household outlet.
2)Turn on the smart plug.
3)Press and hold the power button on the smart plug for about 5 seconds. The outlet's indicator light will flash, and the outlet will enter Bluetooth pairing mode.
4)Tap Add Device in the app. Once the device is detected, enter your Wi-Fi username and password to connect successfully.
5)Please note that the NOVB2048 only works with certain smart plugs.

Yes. Just connect one phase.

Both are fine.

Yes. We can provide plugins to make our devices compatible with Home Assistant.

Please verify whether a primary device is present among the devices connected to the power station. When devices are added to the power station, they are automatically set as master and secondary devices. Usually, the first device added is the master, and the subsequent devices are slaves (as shown in the figure on the right). Only when there is a primary device in the power station can you add an electricity meter.

The S2400 currently does not support standalone CTs. CTs are accessories for SUNPURA smart meters. The smart meter and CT are wired, while the smart meter and S2400 are wireless (Wi-Fi). For CT models, specifications, and detailed installation instructions, please refer to the attached [Smart Meter User Guide].

The S2400 supports connecting to IR meter readers or P1 interface meter readers. Compatible Smart meter reader brands, models, and standards are listed in the table:

The attached [EN_Digital meter models] is a digital electricity meter model compatible with SUNPURA's independently developed infrared meter readers and P1 interface meter readers.

Brands and models of digital meters compatible with the Everhome Smart Meter Reader can be found at the following website:

kompatible Stromzähler per App steuern

For other brands of digital meters compatible with the above meter reader models, please check each brand's official website.

The S2400 currently does not support a standalone CT connection. CTs are accessories for Sunpura smart meters. CT models and specifications are detailed in the smart meter manual. Please refer to the attached manual [Smart meter user guide] for detailed installation instructions.

A current transformer (CT) is a sensor that converts large currents in power systems into smaller currents in proportion, based on the principle of electromagnetic induction, for measurement or protection.

No.

Yes, after installation, the storage system should be regularly inspected for device appearance, bracket stability, cable connections, and ventilation, while removing dust and debris to ensure long-term stable operation; periodic functional checks according to the manual should also be conducted to extend the service life and maintain safety.

After installation, check according to the manual that each cable is securely connected and correctly polarized to avoid looseness or reverse connection; if necessary, use a multimeter to measure voltage and current to confirm normal system input and output, and ensure that all cables are neatly secured to prevent wear or accidental pulling.

No. The SUNPURA S2400 energy storage system has passed IP65 certification, ensuring it is waterproof.

After installation, a power-on test should be conducted according to the manual to confirm that the battery and inverter operate normally, that voltage, current, and connection status meet standards, and to monitor for any unusual noises, overheating, or alarm notifications to ensure correct installation and safe operation.

Storage systems can be installed indoors, but it is essential to ensure good ventilation, keep them away from heat sources and flammable materials, and place the battery in a dry environment to prevent humidity and overheating from affecting battery life and safety. Installation should follow the manufacturer’s indoor installation guidelines.

Yes, to ensure that the device does not shift or tip over under wind, vibration, or seismic conditions, the balcony storage system must be securely mounted using manufacturer-recommended brackets, and screws should be periodically checked to guarantee long-term safe operation.

Up to three devices can be plugged into sockets with different phases in the home. The parallel function can be achieved without connecting communication lines or a parallel box. For detailed steps, please refer to the document [S2400 Parallel Operation Guide].

Our balcony energy storage systems are designed to be plug-and-play, making them easy for users to install and use. Before installation, we recommend carefully reading the product manual to ensure compliance with the correct power interface, safety distance, maximum output power, and other relevant requirements. If you are unsure of the operating instructions, consult a professional or after-sales service representative to avoid damage or safety hazards caused by improper installation.

• Plug the microinverter into the off-grid socket of the S2400 to achieve AC coupling.
• Plug the microinverter and S2400 into separate outlets in your home (preferably on the same phase) to achieve AC coupling.

First, please confirm that the device has been upgraded to the latest version. If the device is confirmed to be the newest version, the problem may be caused by the inverter and battery not being properly connected. Turn off the inverter, unplug all cables, separate the battery and inverter, re-stack them, and restart the inverter to see if the problem is resolved. If not, and spare inverters or batteries are available, please re-stack the inverter with the red light using a different battery pack or re-stack the new inverter with the original battery pack to identify the cause of the problem (inverter/battery pack).

Steps:

1. Verify the antenna is installed and securely connected.
2. Verify the Wi-Fi is 2.4GHz.
3. Ensure your phone's Bluetooth is turned on.
4. Ensure the device is powered on.
5. Ensure the Wi-Fi account and password are entered correctly.

Yes.

No.

In theory, a power station can connect multiple devices via WiFi, and devices can be added to the same power station for parallel operation (see the Parallel Operation Guide for details). However, currently, only three devices can be used in parallel, so a power station can only have a maximum of three devices connected at a time.

The S2400 does not include a PV DC cable, but the SUNPURA PV module package does. You can also purchase the DC cable separately on the official website.

The S2400 has two MPPT inputs (two PV inputs), each with a voltage range of 10-100V. Connecting a standard PV module (e.g., 450Wp (peak power)) will ensure normal operation. The maximum number of PV panels that can be linked should be determined by consulting the PV panel data sheet (maximum open-circuit voltage). Ensure that the total open-circuit voltage of the PV panels, whether connected in series or parallel, does not exceed 100V.

If the PV panel is connected to the device at a voltage exceeding the device's maximum, the device will be damaged. If the current exceeds the device's maximum current rating, the device will not be damaged, but it will limit the current from the PV panel. Therefore, when connecting a PV panel, it is important to refer to the panel's maximum output voltage.

The devices can be connected in series or in parallel. Still, the open-circuit voltage must not exceed 100 V after series connection (please refer to the photovoltaic panel's parameter manual for confirmation).

The Sunpura energy storage system has an off-grid emergency power supply function. Turn on the off-grid switch on the App (the system is turned on by default). When the grid is out, it can automatically switch to battery power and continue supplying critical loads to meet basic household electricity needs. However, the specific power supply capacity and duration depend on the battery capacity and load power, etc.

To increase the self-consumption rate, users can schedule high-energy appliances to operate during daytime or after the storage is fully charged, optimize storage capacity and charge/discharge strategy, and regularly analyze electricity usage patterns through the app to maximize direct use of self-generated electricity.

The energy-saving effect of a storage system is influenced by multiple factors, including battery capacity, solar panel efficiency, household electricity consumption patterns, charge/discharge strategy, and ambient temperature; therefore, when evaluating energy savings, these factors should be considered comprehensively to obtain a more accurate economic analysis.

The storage system does not directly affect renewable energy subsidies, but proper use can increase self-consumption of solar power, indirectly optimizing subsidy benefits; for example, some regions provide electricity discounts based on self-consumption, so using a storage system can help users achieve greater economic benefits.

When solar power generation is insufficient, the storage system prioritizes using the electricity already stored in the battery for household consumption, while supplementing the deficit from the grid to ensure an uninterrupted power supply. The system management software intelligently schedules energy sources to maximize energy savings and economic efficiency.

Using multiple storage devices in parallel can increase total storage capacity and peak discharge capability, thereby providing more self-generated or stored electricity during peak consumption or consecutive cloudy days, theoretically improving energy savings; however, proper system configuration and coordination between devices are necessary, otherwise efficiency may decrease or load conflicts may occur.

The storage system can be charged during the day and used at night during peak electricity periods to reduce purchasing high-cost electricity from the grid, thereby lowering nighttime electricity costs; however, the actual effect depends on price differences, storage capacity, and nighttime electricity demand.

The amount of solar energy that a battery can store depends on the number of battery packs installed. For example, a B2400 battery has a capacity of 2.4 kWh, so it can theoretically store up to 2.4 kilowatt-hours of electricity. But actual storage may be affected by charge/discharge efficiency, ambient temperature, solar panel output, and system management strategies.

Energy savings can be evaluated by recording daily or monthly grid electricity consumption changes, battery charge and discharge amounts, and solar power generation, while also considering electricity bills to quantify the actual reduction in overall household energy consumption and electricity costs provided by the storage system.

Balcony storage systems can, through [Intelligent Control Mode], reduce household electricity costs by storing electricity during low-price periods, discharging during high-price periods, or directly using solar power to reduce grid dependency. The actual savings depend on system capacity, usage patterns, local electricity prices, and solar panel efficiency, and it is recommended to evaluate based on real usage conditions.

Users can report faults through the APP or via official technical support, and after-sales personnel will remotely analyze the issue and provide solutions. In cases of software or communication failures, processing can be done online, reducing the time required to return or exchange faulty products.

SUNPURA currently only offers free replacement services in the country of sale or designated regions. International repairs may be at the user's expense. Specific terms and conditions are subject to the warranty information or after-sales confirmation.

For devices purchased through authorized distributors, users must first contact the distributor to request warranty coverage. If the distributor is unavailable, users can request remote support or a replacement for a faulty product through official after-sales channels. SUNPURA is committed to providing users with the best possible product experience.

Generally, the warranty period for parts or new products replaced during the warranty period is the remaining warranty period of the original equipment. Specific terms and conditions are subject to the warranty instructions or after-sales confirmation.

Manufacturer warranties do not cover natural disasters (e.g., lightning, floods) or accidental human damage (e.g., drops, liquid intrusion). Such cases are handled through additional insurance or paid repair.

If the device fails outside the warranty period, users can choose to pay for repairs or replacement parts. You can ask after-sales staff for details on extended warranties or preferential services to reduce repair costs.

Sunpura provides free logistics services for exchanges due to product quality issues. Please get in touch with the after-sales service for specific return and exchange procedures.

When applying for warranty service, prepare the purchase proof, device model, serial number, and a description of the issue, and apply to official after-sales channels; after-sales personnel will arrange repair, replacement, or remote diagnostics as appropriate, and inform the user of the warranty procedure and expected timeline.

The Sunpura balcony energy storage system has a 10-year warranty, which covers quality issues with batteries, inverters, and major electrical components but failures caused by human damage, natural disasters, or non-standard operation. For specific terms, please refer to the product warranty manual.

Yes. Sunpura systems are fully plug-and-play and can be installed without professional tools.

Most setups do not require an electrician. Grid registration depends on local regulations.

We have local European support. You can send email to support@sunpuraenergy.com .