Specification: Model (Optional): KYZ-10A/KYZ-20A/KYZ-30A Battery Voltage: 12V/24V Self-Adaptive Charging Current: 10A/20A/30A Discharge Current: 10A/10A/10A Maximum Solar Input: <41V Equalization Lithium Battery: 12.8V Lead-acid Battery: 14.4V Float Charge Lithium Battery: 12.0V (default, 11.5-12.8V adjustable) Lead-acid Battery: 13.7V (default, 13-15V adjustable) Under-voltage Protection Lithium Battery: 10.7V (default, adjustable from 9.0-11.0V) Lead-acid Battery: 10.7V (default, adjustable from 9.0-11.5V) Discharge Reconnect Lithium Battery: 11.6V (default, 11.0-11.7V adjustable) Lead-acid Battery: 12.6V (default, 11.5-13V adjustable) Standby Current: <10mA USB Output: 5V/2A Max Operating Temperature: -35~60℃ Size: 133*70*35mm / 5.2 * 2.7 * 1.3in Weight: Approx. 205g / 7.2oz Tips: All red voltages are for 12V systems only; double them when using a 24V system. Package List: 1*Solar Charge Controller Important: 1. Ensure the battery voltage is sufficient for the controller to recognize the battery type before initial installation. 2. The battery cable should be as short as possible to minimize loss. 3. The controller is only suitable for regulating solar modules. Never connect another charging source to it. 4. The controller will get warm when running. Install it in a well-ventilated area.