JJN JJN-SP-425W-N-1 425W Bifacial N-Type Rigid Solar Panel, 25% Efficient

Some solar projects call for a fixed panel as part of a rooftop or farm array, others prioritize equipment that can be moved from place to place. The JJN JJN-SP-425W-N-1 is a rigid panel designed for the first kind of setup, with a bifacial design that can collect light on both sides.

Its 425-watt maximum power rating and stated 25% efficiency make it a useful panel to consider when planning a home, farm, or off-grid solar system. It is specified for 12V, 24V, and 48V on-grid and off-grid systems.

For a practical example, a fixed installation can use the panel as part of a rooftop array, while its bifacial construction can also make sense where light reaches the rear surface. The right approach depends on the installation: a rigid panel suits a planned mounting location, while a frequently moved setup calls for a different kind of equipment.

The essentials

This panel combines N-type monocrystalline cells with 16BB construction and a bifacial, dual-glass design. The front surface receives direct sunlight, while the rear can capture reflected or ambient light. The manufacturer states up to 30% more energy yield from the bifacial design, actual contribution depends on the light reaching the back of the panel. That feature is especially relevant when choosing a mounting position with useful light exposure behind the panel.

The maximum power is 425 watts, with an output voltage of 31.05 volts, a maximum voltage of 38 volts, and an amperage capacity of 13.78 amps. Its stated system compatibility spans 12V, 24V, and 48V on-grid and off-grid applications. The panel is UL 61730 certified, as stated in the product information. Customer feedback highlights perceived build quality and performance, offering an additional perspective alongside the panel’s listed specifications.

Size & fit

The panel measures 67.8 inches long, 44.6 inches wide, and 1.2 inches high, and weighs 51.6 pounds. Those dimensions are useful when planning the mounting area and handling the panel during installation. Its rigid construction uses aluminum, monocrystalline silicon, and tempered glass, making it suited to a fixed solar setup rather than a compact, portable format. A drainage clip is included to help manage water and reduce dust buildup on the panel surface.

Tips for day-to-day use

Choose a mounting position that receives direct sunlight and, where possible, allows light to reach the rear side as well. This helps make practical use of the bifacial design. Before installation, plan the available mounting area around the panel’s dimensions and account for its weight when arranging handling and support. Match the panel’s listed voltage and current specifications to the requirements of the intended solar system, whether it is for a rooftop, home, farm, storage, or charging-station application.

Buying verdict

The JJN JJN-SP-425W-N-1 is a strong fit for buyers planning a fixed solar installation who want a 425W rigid panel with N-type monocrystalline cells and light capture from both sides. Its stated compatibility with 12V, 24V, and 48V on-grid and off-grid systems gives it a clear role in home, farm, and other planned solar projects. Choose it when the installation area can accommodate its full dimensions and take advantage of its bifacial design.