Automatically manages the operation of solar panels and batteries in a solar system. Overload and short-circuit protection. Reverse discharge and reverse polarity protection. Under-voltage and overcharge protection. Provides protection against lightning surges. Helps prolong battery life cycle and ensures stable load performance. Easy to install and operate. Suitable for small solar energy systems. Color: Black Material: Plastic Rated Charge Current: 20A Product appearance and printed text may vary slightly between batches, but this does not affect functionality. Package Contents: 1 x Auto Solar Charge Controller Only the items listed are included; other items are not part of the package. Note: Due to lighting effects and monitor settings, the color of the item in the image may slightly differ from the actual product. Measurement error allowed is +/- 1-3 cm.