Monocrystalline solar cells are more efficient than older amorphous solar cells for 12V batteries, producing up to 20W of power Ideal for caravans, small cars, motorbikes, golf carts etc. IP65 rating making it waterproof Works in cloudy weather Supplied with a 12V power connector for easy charging Alligator clips for charging directly to the battery Polarity protection to prevent damage to clips connected to the wrong battery terminals 3m power cable for easy connection Compatible with OBDII port solar cable RSPOBDN Product dimensions (mm): HxWxD414 x 354 x 21 Weight (kg)1.678 Voltage18V AmpsOutput1.11A Power 20W