Ramsond� 20 Watt 20W W Solar Panel Module 12V Nominal Output RV Boat Battery Charger Charging Trickle Boat

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Price: $214.99 $66.99   

Product Feature

• 20 Watt Solar Panel
• 12V Nominal Voltage Vmp: 17.6V Voc: 21.8V Imp:1.14A Isc:1.25A
• Grade A Solar Cell 17% Efficiency
• Heavy Duty Frame with Mounting/Drain Holes
• Rear Mounted Waterproof Junction Box with Sliding Access Cover

Product Description

Ramsond solar panels use the most premium components and raw material. Ramsond solar panels use only 'Grade A' quality, high purity silicone cells. Ramsond does not incorporate used, rejected, refused or second-hand cells into its solar panels. Furthermore, Ramsond utilizes the most advanced technologies in the production of its panels, such as a fully automated, microprocessor guided, precision, robotic arms guided soldering process of the solar cells. The solar cells are coated with a blue nitride anti-reflection coating. This special coating process provides a uniform blue hue color and increases light absorption in all weather conditions. The encapsulation and lamination process used with Ramsond solar cells consists of a process that ensures true atmospheric vacuum and encapsulation of cells within lamination layers of High Ethylene Vinyl Acetate (High-EVA) and DuPontTM Tedlar . Each panel is equipped with low-iron, patterned, tempered glass. The glass has been manufactured, again, through a proprietary process, providing up to 60% more strength, as compared to conventional photovoltaic (PV) glass. As a result, Ramsond panels are among the world's strongest, with hail impact survival index rating of 25mm@80 km/h. This means the specialized PV glass of Ramsond panels can withstand hail size of 1+ inch, traveling at speeds of approximately 50 miles per hour. Ramsond solar panels are framed in heavy duty anodized extruded aluminum with drainage/mounting holes. The aluminum frame is specially produced for Ramsond solar panels and is designed to provide a perfect balance of technology, style and function. The combination of the advanced components and production techniques, along with Ramsond's industry leading 25 Year Limited Power Warranty, make the Ramsond series of solar panels, among the most advanced and sought after PV modules in the world.

Ramsond® 20 Watt 20W W Solar Panel Module 12V Nominal Output RV Boat Battery Charger Charging Trickle Boat Review

I bought it last week and I used it today for about 3 hours around noon in full sun, Houston Texas. Short circuit current is about 1.10-1.2A in peak, it was good. I charged my SLA battery 12V 7.2Ah for a while and found there are more than 10 spots changing color on the cells. Also some cells started changing its color. Back side is still looking Ok though, It's tyipical connection defect in production line I guess. I felt it's not safe to use without anyone attending, so I am preparing to return.
Solid type solar panel is quite reliable for the structure compaired to folding type, so I liked it first, but this time, my unit isn't so nice. If it didn't have such heat spot problem, I would have liked it very much. I want replacement and want to try good unit.

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