This series solar charge controller is a kind of intelligent, multi-functional solar charge and discharge controller. All the controlling parameters can be reset flexibly to satisfy your different needs. Features: Visual LCD graphic symbol, brief key operation. Automatic identification system voltage level, intelligent PWM charge mode. Adjustable charge/discharge control parameters, settable operating modes of loads. Lithium battery version. Battery over temperature protection, low voltage/reverse polarity protection. Over-load and short-circuit protection. With dual USB 5V output. Specifications: Color: Black + Blue; Material: Plastic; Max. Charge/Discharge Current: 10A Max. Solar Panel Input Voltage: ≤50V; Rated Voltage: 12.6V (3 Series Lithium Battery); Stop Charge Voltage: 12.6V (3 Series Lithium Battery); Low Voltage Recovery: 11.1V (3 Series Lithium Battery); Low Voltage Protection: 9V (3 Series Lithium Battery); USB Output Voltage/Current: 5V 2A; No Load Loss: ≤10mA; Temperature Compensation: -3mV/Cell/°C; Operation Temperature: -20°C~60°C; Item Size: 13 * 6.8 * 3.2cm / 5.12 * 2.67 * 1.26in; Item Weight: 119g~152g / 4.21oz~5.38oz; Package Size: 14 * 8 * 4cm / 5.51 * 3.15 * 1.57in; Package Weight: 154g~187g / 5.46oz~6.61oz; Package List: 1 * Solar Charge Controller; 1 * User Manual (English)