Inverter QOLTEC ECO Solar Boost 4kW MPPT LCD, 4 kW output, MPPT charge control, LCD display

The QOLTEC ECO Solar Boost 4kW MPPT LCD is a grid-tied inverter designed for small residential and light commercial photovoltaic (PV) systems. It converts DC power from solar panels into 4 kW of AC output and integrates an MPPT (Maximum Power Point Tracking) charge controller with an LCD display to monitor system status. The unit manages PV input, optimises panel output with MPPT algorithms, and supplies stable AC power to local loads or feeds excess energy to the grid, making it suitable for rooftop installations where reliable conversion and basic on-site monitoring are required.

Advantages

The integrated MPPT charge control improves energy yield by continuously tracking the maximum power point of the PV array, increasing overall system efficiency compared with fixed-point controllers. The built-in LCD provides immediate, readable information about operational status, input/output parameters and basic fault indications without additional monitoring equipment. With a 4 kW AC output rating the inverter supports typical single-phase household loads while maintaining compact installation footprint suitable for small installations.

Suitable for

• Small residential rooftop solar systems
• Light commercial PV installations (shops, offices)
• Retrofit projects replacing older inverters or controllers
• Projects requiring simple on-site monitoring and MPPT optimisation

Key specifications

• AC output power: 4 kW
• Integrated MPPT charge controller for PV input optimisation
• LCD display for system monitoring and status indicators
• Grid-tied operation for feeding excess energy to the utility grid
• Suitable for single-phase electrical systems
• Compact design for wall-mounted or small-box installations

How to use

Mount the inverter in a dry, ventilated location close to the main AC distribution panel and the PV array DC wiring. Connect the PV array to the inverter’s DC input following the polarity and voltage range guidelines from the manufacturer, and connect the inverter’s AC output to the building’s distribution panel in accordance with local electrical codes. Use the LCD display to navigate basic menus, read input/output voltages and currents, and check MPPT operating status. Commission the system by verifying grid connection settings and performing initial measurements to confirm proper operation.

Recommendations

Ensure PV array voltage and current remain within the inverter’s specified input ranges and protect DC and AC circuits with appropriate overcurrent devices and disconnects. Periodically inspect DC connections for tightness and signs of corrosion, and keep the LCD and ventilation openings free of dust. For grid connection and safety compliance use a qualified electrician and follow local regulations.