The unit features a built-in 100A high-power MPPT solar charge controller with an MPPT efficiency of up to 99%. It supports a maximum PV input voltage of 500 VDC and operates within a voltage range of 60 VDC to 500 VDC, enabling it to fully harness solar energy and significantly improve power generation efficiency. The device supports simultaneous charging from both PV and grid power, with a maximum charging current of 100A. It employs a CC/CV (constant current/constant voltage) charging mode and features a built-in battery equalization function, effectively optimizing battery performance and extending service life. It also supports dual-activation for lithium batteries, allowing the system to be activated by either grid or PV power, ensuring flexible and convenient operation.

The device is equipped with WiFi remote monitoring, allowing real-time viewing of operational parameters—such as system power generation, battery charge level, and load power—via a smartphone or computer, facilitating remote management. It features overload protection, supporting 110%–150% load for 10 seconds and ≥150% load for 5 seconds, ensuring safer operation. With dimensions of 358 x 295 x 100 mm, the unit features a compact and space-saving design, making it suitable for wall-mounted or desktop installation. It achieves a peak efficiency of 96% from PV to inverter and 93% from battery to inverter, ensuring highly efficient and energy-saving operation.

The energy storage unit utilizes the SW-T512V5KWH-S model, a 5kWh wall-mounted vertical lithium iron phosphate battery pack. It employs LiFePO4 material with a nominal voltage of 51.2V, a capacity of 100Ah, and a rated energy storage of 5.12kWh. The operating voltage range is 43.2–58.0V, ensuring stable charging and discharging performance. The battery has a cycle life of over 6,000 cycles. Under conditions of 25°C ambient temperature, 0.5C charge/discharge rates, and a 90% depth of discharge, it maintains long-term stable performance, offering high safety, no memory effect, and low maintenance costs.

The battery supports a recommended charge/discharge current of 100A/100A and a maximum discharge current of 200A, compatible with the 3.5kW power output of an integrated inverter-controller unit, meeting short-term high-power electricity demands for households. Equipped with a built-in BMS (Battery Management System) for intelligent protection, it features multiple safeguards against overcharging, over-discharging, overcurrent, overheating, and short circuits. It also incorporates active balancing to ensure consistent cell voltages, thereby enhancing overall runtime and lifespan. The unit features a 3.2-inch LCD display for intuitive monitoring of battery charge level, operational status, voltage, current, and other parameters. It supports RS485, Bluetooth communication, and connection to a smart app for real-time monitoring of battery performance. The battery supports both wall-mounted and floor-standing installation options. With an IP20 protection rating and a wide operating temperature range, it is suitable for indoor residential environments. It supports up to 16 units in parallel for capacity expansion, meeting future capacity upgrade needs.

The PV modules are mounted using specialized brackets made of zinc-aluminum-magnesium alloy, which offers high corrosion resistance, superior mechanical strength, and excellent wind and load-bearing capabilities, making it ideal for long-term outdoor use. The angle can be adjusted according to the installation environment to maximize PV power generation efficiency, and the standardized design ensures quick and easy installation.

The system comes with a complete set of accessories, including dedicated MC4 connectors, DC/AC circuit breakers, PV cables, grounding components, communication cables, and installation fasteners. All components are specifically designed for photovoltaic systems, ensuring electrical compatibility, stable connections, and adequate protection. This enables a one-stop installation without the need for additional purchases, guaranteeing proper wiring and safe operation.

This 3.5 kW/5 kWh residential solar power system features a well-balanced configuration and highly compatible components. During the day, solar power is prioritized to supply loads, with excess electricity stored in the battery. At night or during cloudy or rainy weather, the battery discharges to provide power, while the utility grid serves as a backup supplement, ensuring uninterrupted power supply around the clock. The system operates efficiently, intelligently, conveniently, safely, and reliably. It effectively reduces household electricity costs and decreases reliance on the grid, making it an ideal solution for home green energy retrofits, emergency backup power, and off-grid power supply.