Callsun 100W Flexible Solar Panel — 240° Bendable Ultra-Thin, ETFE Weatherproof for RVs & Boats

Callsun's 100W Flexible Solar Panel is an ultra-thin, 240° bendable solar module engineered to conform to curved roofs and marine surfaces while delivering high-efficiency charging for portable power stations and vehicle batteries.

This flexible panel blends rugged marine-grade protection with lightweight, low-profile design so you can add solar capacity to uneven or aerodynamic surfaces that rigid panels can't reach. Designed with ETFE weatherproofing, 11BB monocrystalline cells and universal connectors, it gives dependable 100W output for RV roofs, boats, vans, rooftop tents and off-grid cabins where space and weight matter.

How does this panel perform on curved or aerodynamic surfaces?

The Callsun 100W panel bends up to 240°, letting it sit smoothly on dome-shaped, tapered or compound-curved roofs without buckling. At just 0.1 inch thick and roughly half the weight of rigid modules, it reduces wind lift and keeps a low profile for better aerodynamics and stealth installations.

• 240° flexibility for tight radii and compound curves
• Ultra-thin 0.1-inch construction for near-flush mounts
• 50% lighter weight than standard rigid panels

Will this panel withstand marine exposure and harsh weather?

Yes — the panel uses a premium ETFE outer layer and multilayer bonding that resists salt-mist, UV yellowing, and hail damage better than standard laminates. That makes it a practical choice for bimini tops, sailboats, and coastal installations where corrosion and sun degradation are concerns.

• ETFE coating for stronger UV and salt resistance
• Multi-layer bonding to prevent delamination in moisture
• Durable against hail and prolonged sun exposure

How does it integrate with portable power stations and battery systems?

Callsun built this panel for plug-and-play charging of popular solar generators and battery systems, including EcoFlow, Jackery, Bluetti, Anker and Rockpals. Standard solar connectors simplify setup, and the panel’s 23% efficient monocrystalline cells with 11BB layout provide steady charging even in partially shaded conditions.

• Compatible with major portable power stations (EcoFlow, Jackery, Bluetti)
• Standard solar connectors for quick hook-up
• 23% efficiency and 11BB cells for improved low-light output

What are the best mounting and use scenarios for this ultra-thin panel?

This panel excels where weight, contour conformity and low clearance are priorities: rooftop tents, stealth camper vans, curved RV roofs, and small boats. Because it sits nearly flush and is lightweight, it reduces wind resistance and can be adhered or fastened with minimal structural modification.

• Adhesive or low-profile fastener mounts for curved surfaces
• Ideal for stealth camping, van life, and aerodynamic vehicles
• Suitable for charging LiFePO4 batteries, trolling motors, and off-grid systems

Who is this for? If you need reliable solar charging on a non-flat surface — whether you’re outfitting an RV, a marine craft, an overland vehicle, or a small off-grid building — the Callsun 100W Flexible Solar Panel offers a lightweight, corrosion-resistant option that maximizes wattage in tight spaces. It’s aimed at campers, van-lifers, boat owners, and DIY installers who want a discreet, high-efficiency panel that pairs easily with mainstream portable power stations and battery systems.