Callsun CN450W 450W Bifacial Solar Panels, 2-Pack, 900W Total, N-Type 16BB

Best use cases

At 69.37 x 44.65 x 1.18 inches per panel, this two-panel Callsun set provides 900W of combined rated power for home rooftops, RVs, and off-grid systems. The bifacial design can collect light from both sides, making it suited to open installations where reflected or ambient light can reach the rear surface. A dual-module parallel layout is designed to help maintain production from one section when another is partly shaded.

For a rooftop or ground-mounted array, the 450W rating per panel gives system planners a higher-wattage module option rather than building the same rated capacity from more lower-wattage panels. The panels are also designed to pair with solar inverters and MPPT charge controllers, match the equipment to the panel’s electrical specifications when planning a system.

Technical overview

• Type: Bifacial monocrystalline solar panels
• Pack: 2 panels, 450W each, 900W total
• Cells: N-Type monocrystalline, 16BB
• Efficiency: 25.6%
• Construction: Double glass with low-iron tempered glass and an anodized aluminum alloy frame
• Dimensions: 69.37 x 44.65 x 1.18 inches per panel
• Maximum power voltage: 30.08V
• Maximum power current: 14.97A
• Protection rating: IP68

The N-Type 16BB cell design, double-glass construction, and bifacial format bring distinct considerations to a system choice: cell technology, panel structure, and the opportunity to collect light at the rear. The parallel anti-shade design is intended to reduce the effect of partial shade on the panel’s output. For system planning, use the listed electrical ratings alongside the inverter or charge controller requirements.

Pros

The two-panel format offers 900W of rated power in a set, while each panel supplies 450W. That can suit projects where panel count, array layout, or available mounting area influences the choice between higher-wattage panels and a larger number of lower-wattage modules. Bifacial generation adds another practical factor: installations with open space or reflective surfaces behind the panels can make use of light reaching the rear side.

The double-glass build and aluminum alloy frame are designed for outdoor solar installations, and the IP68 rating is a documented protection feature. Buyers commonly highlight output and construction, while installation feedback is mixed, including comments about mounting options. The product’s dimensions and electrical ratings are useful starting points for planning the array and its mounting arrangement.

What to clarify

What comes in the set? It is a two-panel pack, with each panel rated at 450W and 900W combined.

What does bifacial mean for an installation? The panels can collect sunlight from both the front and rear, so placement where reflected or ambient light reaches the back can make use of that design.

How does the panel address partial shade? Its dual-module parallel design is intended to let one section continue producing power when the other is shaded, helping limit the effect of partial shading.

Buying verdict

For rooftop, RV, and off-grid projects that call for a two-panel, 900W set, the Callsun CN450W combines N-Type 16BB cells with bifacial generation and double-glass construction. Its higher per-panel wattage, shade-conscious layout, and clearly listed electrical ratings make it a practical choice to consider when planning a solar array around a suitable inverter or MPPT charge controller.