NUZAMAS Car battery maintainer can charge 12V batteries with the power of the sun and create max of 20 watts of energy，rated voltage 18V, output current up to 1000mAh
Mono-crystalline silicon panel works in sunlight conditions and is weatherproof（splash proof）for added durability
Built-in blocking diode to prevent reverse discharge and safety. Lightweight makes it portable and suction cups makes it easy to place onto the front screen of vehicles
This product is designed for outdoor 12V applications, such as cars, campers, ships, automobiles, etc. Motor rechargeable batteries, and maintain sufficient capacity to protect the battery power supply. It is convenient, environmental, safe, and maintain your car battery anywhere.
Multi-Connections: Comes with USB, Car Charging plug, Alligator Clips. This item also comes with a cable for you to connect two NUZAMAS 20W solar panels to get more power and speed up your battery charging (please see the last image for reference)