Sunforce 52022 5 Watt Solar Trickle Charger - Pack of 2 Features sturdy and durable aluminum frame with amorphous solar cells ; Includes 5 Watt solar panels (x 2) , 12V DC plug (x 2), battery clamps (x 2) and mounting hardware (x 2) for easy installation Completely weatherproof for added durability Amorphous solar panel works in all daylight conditions; even on cloudy days Built-in overcharge/discharge protection Maintains and trickle charges 12 Volt batteries for your car, boat, RV, electric fence, deer feeder and more