This 12V 20W Solar Panel is high-quality with high efficiency and a smaller footprint than conventional monocrystalline solar panels. Provides a simple way to keep your 12V batteries topped up and ready for your caravan, farm equipment, etc. It features a robust frame that is dust and weather-resistant. Provided with a 3m long leads terminated with battery clips. Fitted with a blocking diode that allows the battery to be connected directly as a trickle charger (take note of the minimum battery capacity). And also, as a low current charger to replace a load or current drain on the battery. We recommend the use of a solar charge controller to prevent overcharging of the battery when the panel output exceeds the routine circuit load.