280 Watt Flexible Marine Solar Panel - New Generation Back Contact Cell A+ Grade 27.4% Efficient Cells

The CMPower 280W panel uses 27.4% efficient Back Contact solar cells, providing high solar output while maintaining a clean, modern panel design.

Unlike conventional solar cells with electrical contacts on the front surface, ABC (All-Back Contact) technology places all positive and negative electrical contacts on the rear side of the cell. This maximizes the front surface area available for sunlight energy absorption.

Removing front-side electrical contacts also creates a clean, seamless, grid-free appearance, giving the panel a sleek all-black finish particularly suited to premium marine, yacht, RV, and van installations.

For larger onboard electrical systems, increasing solar capacity without consuming excessive usable space can be a challenge.

The CMPower 280W Back Contact panel delivers 280 watts of maximum power from a panel measuring:
765 × 1510 × 3 mm
31.5 × 59.6 × 0.12 in

Its 27.4% efficient solar cells help maximize solar generation from the available mounting area, making this panel particularly attractive when higher output is required but installation space remains limited.

With substantially more output from a single panel than smaller-format modules, the 280W model can also help reduce the number of individual panels required to achieve a desired total solar array capacity, depending on the available mounting area and system design.

Despite its 280W maximum power rating, the CMPower panel weighs only 4.8 kg (10.58 lb).

Its lightweight construction can help minimize additional load on compatible bimini structures, boat surfaces, RV and van roofs, and other weight-sensitive installations.

At just 3 mm thick, the panel maintains a low-profile installation compared with conventional framed rigid solar modules.

The semi-flexible construction allows installation on suitable curved surfaces, with the datasheet specifying a maximum bend specification of 60°.

Note: This is a semi-flexible solar panel and should only be bent within the manufacturer's specified limits.

Marine and mobile solar installations frequently experience changing or partial shading caused by:

• Masts
• Rigging
• Antennas
• Rails
• Radar equipment
• Bimini hardware
• Roof accessories
• Other nearby structures

The CMPower Back Contact panel incorporates an advanced cell and electrical design intended to improve performance under partial shading, helping make better use of available sunlight in real-world conditions.

This makes it particularly useful for marine installations where maintaining completely unobstructed sunlight throughout the day can be difficult.

Solar panel output normally decreases as cell temperature increases, making temperature performance important for panels exposed to direct sunlight on boat decks, bimini tops, RVs, vans, and rooftops.

The CMPower 170W Back Contact panel features a Pmax temperature coefficient of -0.26%/°C, helping reduce power loss as panel temperature rises.

Its temperature characteristics are:

• Pmax: -0.26%/°C
• Voc: -0.24%/°C
• Isc: +0.05%/°C
• Operating Temperature: -40°C to +85°C

For boats with sufficient mounting area, the 280W output and semi-flexible construction make this panel particularly attractive for larger bimini top and deck-mounted solar installations.

Its 31.5 × 59.6 inch footprint provides significantly more solar capacity from a single panel than smaller-format modules, while the 3 mm thickness and 10.58 lb weight help maintain a relatively low-profile installation.

For larger boats, yachts, and cruising vessels with higher electrical demands, installing higher-wattage panels can help maximize the amount of solar capacity that can be fitted within the available bimini or deck area.

The CMPower 280W semi-flexible solar panel is designed for real-world installations including:

Boats • Bimini Tops • Boat Decks • Yachts • Sailboats • Vans • RVs • Roof Racks • Rooftops • Curved Surfaces

Its marine-oriented construction includes a waterproof IP67 XC502 junction box, 316 stainless steel mounting holes and eyelets, and testing that includes IEC salt mist and high-temperature humidity conditions.

The black backsheet and all-black Back Contact cell design also provide a clean finished appearance suitable for installations where aesthetics are important.

The panel is supplied with six mounting holes/eyelets manufactured from 316 stainless steel, a corrosion-resistant material commonly suited to demanding marine environments.

The grommets are positioned approximately 14 mm from the panel edge, according to the datasheet.

Electrical connection is provided through:

0.9 m solar cable • 4 mm² conductor • MC4 connectors

Combined with the IP67 waterproof XC502 junction box, these features provide a practical foundation for professional marine and mobile solar installations.