400W (200W*2) 18V Solar Panel N-Type Mono 18BB Roof RV Boat Off-Grid Battery

 Powerful 18V Output for 12V Battery Charging

Unlike standard 12V solar panels, our 18V solar panel can charge your 12V battery more efficiently through a controller using just one panel. This gives you a practical advantage and makes installation easier.

Premium Pure Copper Wire

Built for hot weather performance.

Our panel uses high-quality pure copper wire, which stays cooler and carries current better than copper-clad aluminum wire, especially in summer conditions.

Superior Build Quality

Made with higher manufacturing standards and refined craftsmanship, this solar panel offers dependable performance, durability, and a clean finished look.

Dual-Layer Wire Protection

The cable is designed with a 2-layer protection system for enhanced durability:

Outer UV-resistant layer

Inner insulation layer

This helps protect the wiring from sunlight, wear, and outdoor conditions.

Reverse Current Blocking Protection

Equipped with a blocking diode junction box, the solar panel helps prevent reverse current at night, so your battery won’t lose power after sunset.

Smooth and Safe Edges

The panel frame is finished with smooth edges for safer handling during installation and transport.

Secure Packaging

Carefully packaged to help ensure the solar panel arrives well protected and in excellent condition.

FAQ

Q: What is the difference between off-grid and on-grid systems?

A: Off-grid systems use batteries and work independently from the utility grid. On-grid systems connect to the utility grid and may help reduce electricity costs through net metering.

Q: Why is my solar panel not reaching full power?

A: Output may be affected by weather, shading, dirt, panel angle, temperature, or system wiring. Cleaning and proper installation can help improve performance.

Q: Should I wire panels in series or parallel?

A: Series wiring increases voltage, while parallel wiring increases current and can reduce shading-related losses. Choose the setup that matches your controller or inverter specifications.

Q: What does “12V” mean in the title?

A: “12V” means the panel is intended for use with a 12V battery system. The actual panel operating voltage is typically higher (around 18V), which is required for proper charging.

Item specifics

Condition: A brand-new

Technology: N-Type

Efficiency: High Efficiency

Frame Material: Aluminum

Dimensions: 1340 × 670 × 30 mm

Weight: Approximately 18.5 lbs (8.4 kg)

UPC: Does not apply

Brand: AeternaSol

Power Source: Solar

Type: Solar Panel

Features: High Efficiency, Monocrystalline Cells, Maintenance Free, All Daylight Conditions, Portable, Corrosion Resistant

Current Type: DC

Solar Technology: Monocrystalline

System Configuration: Off-Grid

Application: RV, Camper, Caravan, Motorhome, Boat, Marine, Camping, Home Garden, Backup Power, Shed, OffGrid System, Solar Generator, Cabin

Voltage: 18 V

Resistance Properties: Waterproof, Weatherproof, Dust Resistant, Corrosion Resistant, Abrasion Resistant, Acid Resistant, Chemical Resistant, Fade Resistant

Power: 200 W

Current Output: 11-19 A

Charging Mode: MPPT / PWM Compatible

Current Rating: Greater Than 10 A

MPN: Does not apply

Wattage: 200-299 W

Pliability: Rigid

Connector Type: MC4

Color: Black

Recommended Environment: Outdoor

Connector Configuration: Male & Female

Protection Properties: Reverse Current Protection, Short Circuit Protection, Overcharge Protection, Overcurrent Protection, Overvoltage Protection, Undervoltage Protection, Surge Protection, Lightning Protection, Thermal Protection

Maximum Input Voltage: 11-20 V

Material: Reinforced Glass

Size: 52.8 × 26.4 in

Item Length: 52.8 in

Maximum Input Power: 200 W

EAN: Does not apply