Callsun 240W (2x120W) N-Type Bifacial Solar Panel Instruction Manual

Introduction

This manual provides essential information for the safe and efficient setup, operation, and maintenance of your Callsun 240W (2x120W) N-Type Bifacial Solar Panel Kit. This kit features high-efficiency N-Type cells, bifacial technology for increased energy harvest, and anti-shade circuitry for consistent power output, making it ideal for RVs, trailers, solar generators, and vans.

Setup

Your Callsun 240W (2x120W) N-Type Bifacial Solar Panel Kit is designed for effortless DIY installation. Each kit includes two 120W bifacial solar panels and necessary solar connector cables. The panels feature 12 pre-drilled holes for wide compatibility with various mounting solutions such as Z-brackets and tilt mounts (mounting hardware not included).

For system integration, refer to the following diagrams for typical 12V and 24V setups. Ensure all connections are secure and follow local electrical codes.

Effortless DIY Installation with Solar Connectors and Pre-drilled Holes — **Effortless DIY Installation:** The image shows the dimensions of the solar panel (43.31 in x 22.76 in x 1.38 in), its weight (15.1 lbs), solar connectors for plug & play, 12 pre-drilled holes for zero prep work, and wide compatibility for Z-brackets & tilt mounts.

12V and 24V System Diagrams for Solar Panel Connection — **System Diagrams:** This image illustrates typical 12V and 24V system diagrams for connecting solar panels to a solar charge controller and battery. Components like solar extension cables, partial connectors, and battery cables are shown (not included).

Operating

The Callsun N-Type Bifacial Solar Panels are engineered for superior performance across various conditions:

Bifacial Technology: These panels capture sunlight from both the front and rear sides, allowing for up to 30% additional energy harvest. This is particularly effective when mounted over reflective surfaces like white RV roofs, boat decks, or snowy ground.
Anti-Shade (TwinCell Parallel Circuitry): Unlike traditional panels that cease charging when partially shaded, the TwinCell Parallel Circuitry allows each section of the panel to operate independently. This ensures consistent power flow to your battery bank even if parts of the panel are shaded by trees or other obstructions.
High-Efficiency N-Type 16BB Architecture: The advanced N-Type 16BB cell design enhances light conversion, enabling the panels to generate power efficiently even during low-light conditions such as dawn, dusk, or overcast days.
Heat-Resistant Performance: Designed to minimize power loss in high temperatures, these panels maintain stable voltage output even on hot surfaces, making them ideal for desert or tropical environments.

Video: Callsun 120W N-Type Bifacial vs. Other 120W P-Type: Real-World Efficiency & Shade Test. This video demonstrates the real-world efficiency and shade performance of the Callsun 120W N-Type Bifacial solar panel compared to a standard 120W P-Type panel. It highlights how the Callsun panel maintains power output even under partial shading and showcases its bifacial capabilities.

**Captures 25% Front Efficiency Up To 30% Extra Rear Power:** An illustration showing the layers of the solar panel, including the antireflection layer, busbars, and quantum tunneling, contributing to 25% cell efficiency and up to 30% extra rear power. It also compares Callsun's 16BB 25% cell efficiency to others' 9BB 21% cell efficiency.

**Bifacial Tech Boosts Yield Up To 30%:** A solar panel set up on a beach, illustrating how it captures sunlight from both sides, leading to up to 30% 'Free Power' depending on the ground type (Albedo).

**TwinCell Design Minimizes Shade Power Loss:** A comparison showing a traditional series panel losing 100% power output when partially shaded, versus a Callsun Parallel Circuitry Design panel retaining 50% power output under similar shading conditions. Note: Avoid shading across both zones simultaneously.

**Independent Zones Retain 50% Yield in Half Shade:** An advanced parallel circuitry and TwinCell design comparison showing a P-Type panel with 0% power output under half shade, while a Callsun N-Type Bifacial panel achieves 50% power output.

**Delivers Consistent Energy Production Even On Cloudy Days:** A visual comparison showing a P-Type panel with 10% power output on cloudy days, while a Callsun N-Type Bifacial panel delivers 20-30% power output.

**Continues Producing Power Efficiently In Light Rain Days:** A visual comparison showing a P-Type panel with 5% power output in light rain, while a Callsun N-Type Bifacial panel delivers 10-20% power output.

**Continues Producing Power Efficiently In Light Snow Days:** A visual comparison showing a P-Type panel with 5% power output in light snow, while a Callsun N-Type Bifacial panel delivers 10-20% power output.

Up To 30% Additional Rear-Side Power: Capture Reflected Light (Albedo) For Bonus Energy — **Up To 30% Additional Rear-Side Power:** This image shows three solar panels on different surfaces (snow/white roof, concrete/sand, grass/soil) demonstrating how reflected light (Albedo) can provide +25-30% gain, +15-20% gain, and +5-10% gain respectively.

**Gain 2% Extra Power In Hot Weather:** A graph comparing Callsun N-Type (Cool-Run Tech) with Standard P-Type (Overheats), showing Callsun maintaining higher real-world output, gaining 2% extra power at 167°F. Desert-proven performance optimized for 100°F+ climates.

Maintenance

To ensure optimal performance and longevity of your solar panels, regular maintenance is recommended. Keep the panel surfaces clean from dust, dirt, and debris. Use a soft cloth and water for cleaning. Avoid abrasive materials or harsh chemicals.

The Callsun solar panels are built for extreme conditions, featuring a reinforced aluminum frame (1.1mm) and 3.2mm impact-rated tempered glass. They are IP68 waterproof, designed to withstand 5400Pa snow loads and 2400Pa wind loads, ensuring durability for over 25 years.

Built For Extremes: Durable, Reliable, Weatherproof — **Built For Extremes:** This image highlights the robust construction of the solar panel, featuring 3.2mm tempered glass, IP68 waterproof rating, maximum wind load of 2400Pa, maximum snow load of 5400Pa, and a 1.1mm aluminum frame, ensuring durability and reliability in various weather conditions.

Enhanced Durability And Longevity: Built For Harsh Environments — **Enhanced Durability And Longevity:** This image details the robust construction with a 1.1mm anodized aluminum frame for rigidity and rust-proof performance against high winds, and 3.2mm impact-rated glass for superior hail and debris defense.

IP68 Waterproof with Fully Sealed Protection — **IP68 Waterproof:** This image shows a solar panel on a rooftop in the rain, emphasizing its IP68 waterproof rating with fully sealed protection, contrasting it with a non-completely sealed alternative.

Lower Degradation, Longer Lifespan: 25-Year Performance Guarantee — **Lower Degradation, Longer Lifespan:** A graph comparing the power output degradation of Advanced N-Type versus Standard P-Type solar panels over 25 years, showing N-Type retaining 87.4% performance compared to P-Type's 84.8%, indicating +2.6% more lifetime energy and commercial-grade durability.

Troubleshooting

If your solar panels are not performing as expected, consider the following:

Low Power Output: Check for any shading on the panel surface. Even partial shading can reduce output. Ensure all connections are secure and free from corrosion. Verify that your charge controller settings are appropriate for your battery type and system voltage.
No Power Output: Confirm all cables are correctly connected and not damaged. Check the solar connector cables for proper polarity. Inspect the charge controller for error indicators.
Environmental Factors: Extreme temperatures, heavy cloud cover, rain, or snow can temporarily reduce efficiency. The N-Type bifacial design is optimized for these conditions, but significant weather events will still impact output.

Specifications

Feature	Detail
Brand	Callsun
Material	Aluminum, Monocrystalline Silicon, Tempered Glass
Product Dimensions	43.31"L x 22.76"W x 1.38"H
Item Weight	14.33 Pounds
Efficiency	25% High Efficiency
Upper Temperature Rating	185 Degrees Fahrenheit
Maximum Power	240 Watts (2x120W)
Special Features	25% High Efficiency, Anti-Shade, Bifacial Solar Panel, N type 16BB Solar Panel, Waterproof
Output Voltage	20.48 Volts
Model Number	CS120W
Included Components	2Pcs 120 watt solar panel, Solar connector cables, User manual

Warranty and Support

Your Callsun 240W (2x120W) N-Type Bifacial Solar Panel Kit comes with a worry-free 10-year warranty and a 25-year performance guarantee, ensuring 87.4% performance retention after 25 years. For any questions, technical assistance, or warranty claims, please contact Callsun customer service. Our friendly customer service team is ready to assist you.

Callsun CS120W