425W BC Monocrystalline Flexible Solar Panel

  • Ultra-thin lightweight, only 5.2kg, bendable (min static bending radius ≥25cm)
  • Fits curved RV, van, yacht and arched roofs perfectly
  • IP67 waterproof MC4 connectors & junction box; works -40℃ to +85℃
  • Strong low-light performance: over 81% power output at 200W/m²
  • ETFE anti-UV surface, glass-free, hail & salt spray resistant
  • Pre-fitted MC4 plugs for plug-and-play; drill-free mounting with adhesive & holes, install in 15 mins
  • 1000V DC max system voltage, ±5% power tolerance, Class II safety
  • Great for off-grid, RV, camper, marine & remote outdoor power

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The 425W BC Monocrystalline Flexible Solar Panel is a specially designed back-contact monocrystalline solar product that achieves over 23.5% conversion efficiency, retaining stable high power output in low-light environments with more than 81% power retention at 200W/m².
Its IP67 waterproof & dustproof junction box and MC4 connectors, alongside -40℃ to +85℃ extreme temperature resistance, guarantee long-term stable outdoor operation. This ultra-thin flexible panel adapts seamlessly to curved RV, van and yacht surfaces, and pre-wired standard MC4 connectors enable quick plug-and-play installation. It is a premium durable power accessory for RV camping, marine vessels and off-grid power engineering wholesale distributors.

Core Product Advantages

  • High-Efficiency BC Solar Cells – ≥23.5% top-grade back-contact monocrystalline silicon, 425W peak power, low power attenuation
  • IP67 Protection Rating – Fully dust and water resistant, resistant to salt spray, hail and all harsh outdoor marine & roadside environments
  • Flexible Curved Adaptability – Static minimum bending radius ≥25cm, freely fits curved RV roofs, vans, sailboats and arc architectural surfaces
  • Ultra-Light Thin Build – Only 5.2kg lightweight structure with 2.5mm ultra-thin ETFE lamination, 50% lighter than equivalent rigid glass solar panels
  • Drill-Free Quick Installation – Pre-attached adhesive plus reinforced mounting holes, complete installation within 15 mins without damaging vehicle or hull structure
  • Wide Operating Temperature – -40℃ to +85℃, stable power generation under extreme cold and high-temperature sunlight exposure
  • Durable ETFE Surface Layer – Anti-UV, anti-tear and anti-corrosion, no fragile glass, 10 times stronger tear resistance than ordinary thin-film panels
  • Excellent Low-Light Performance – Maintains over 81% rated power under weak light, delivers steady power on cloudy and rainy days
  • Safe Electrical Standard – 1000V DC maximum system voltage, Class II safety standard, ±5% power tolerance
  • Global Authoritative Certifications – UL, CE, FCC, RoHS, PSE, ISO9001 & BSCI certified, meets worldwide export standards
  • Full Off-Grid Power Supply – Independent solar power source for RVs, yachts, trailers, remote cabins, sheds and outdoor solar lighting systems
  • We also offer OEM/ODM services for bulk orders of this solar panel.
Package Includes

  • 1 × 425W BC Monocrystalline Flexible Solar Panel
  • 1 × User Manual

Product & Packaging Specs

  • Model: GT-DSP-S425
  • Special Feature: Flexible, Drill-Free Mountable
  • Material Type: BC Back-Contact Monocrystalline Silicon, ETFE Surface
  • Low-light performance: >81% @ 200W/m²
  • Application Class: Class II
  • Efficiency: >23.5% Top Grade BC Mono Cells
  • Bending radius: ≥25 cm (static) / ≥9.84 in (static)
  • Product Dimensions: 85.83 × 27.56 × 0.10 in
  • Net Weight: 11.46 lbs

Product Specifications

Frequently Asked Questions (FAQs)

What core advantages does the 390W BC monocrystalline flexible solar panel have compared with ordinary flexible solar panels?

It adopts premium BC back-contact monocrystalline cells with conversion efficiency over 23.5%, capturing 15% more sunlight than traditional panels. The static bending radius reaches ≥25cm to fit curved RV and yacht surfaces. Equipped with anti-UV polished ETFE surface, its tear resistance is 10 times higher than standard thin-film panels. It only weighs 4.8kg (10.58 lbs), 50% lighter than rigid glass solar panels, and maintains over 80% power output under weak light of 200W/m².

What are the standard electrical parameters of 390W BC monocrystalline flexible solar panel? Can it match 12V/24V energy storage batteries?

STC standard parameters: Pmax=390W, Vmp=24V, Voc=28.5V, Imp=16.25A, Isc=16.45A. The 24V maximum power voltage perfectly fits 12V & 24V off-grid battery systems for RV and marine use. Its max system voltage is 600V DC, supporting series and parallel combination expansion.

What international certifications does this panel carry for wholesale sales in Europe and North America?

We have complete global certifications including UL, CE, FC, RoHS and ISO9001. It complies with Class II electrical safety standard, fully meeting import and market access standards of EU and the US, helping wholesalers avoid extra customs compliance costs.

Can the solar panel work under extreme hot and cold climates? What’s its waterproof grade?

Operating temperature range: -40℃ ~ +85℃ (-40℉~185℉), stable performance in frigid northern areas and hot coastal tropics. The MC4 connector is IP67 waterproof & dustproof, the ETFE surface resists salt spray and hail, ideal for marine and all harsh outdoor environments.

Do customers need to drill holes during installation? What accessories are included in the package?

Drill-free installation design. Pre-attached adhesive and reinforced mounting holes are reserved on the panel back. Each package contains 1 piece of 390W solar panel and 1 user manual. The whole installation can be finished within 15 minutes without damaging RV or yacht structures.

What’s the wholesale MOQ, power tolerance and after-sales support for bulk orders?

We accept flexible MOQ and mixed container orders. The panel power tolerance is controlled within ±5%. We provide long-term product warranty, full test reports, technical guidance and free marketing material packs for all wholesale partners.

What target scenarios and end buyers are suitable for this 390W BC monocrystalline flexible solar panel?

It targets off-grid mobile energy markets, widely used for RV, camper vans, yachts, travel trailers, remote cabins, farm sheds and outdoor solar lighting. It is a hot-selling product for RV accessory dealers, marine equipment suppliers and off-grid energy system wholesalers.

What are the size, weight and bending restriction of the panel for shipping and storage planning?

Product dimensions: 1760 × 1000 × 3 mm / 46.3 × 39.37 × 0.1 in; net weight: 4.8kg (10.58 lbs). Static minimum bending radius ≥25cm; excessive bending will break internal cells. Its ultra-thin flexible structure saves shipping space and lowers ocean freight cost for bulk shipments compared with rigid solar panels.

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