Features1Intelligent and Convenient: The solar charge controller is MCU control, which has the advantages of intelligence, strong adaptability, and reliable functions 2MPPT Technology: The solar panel charge controller applies MPPT maximum power point tracking technology, which can work at the best power point of the I V curve, and the efficiency is up to 99% 3Long Lasting Battery: The 12v solar charge controller adopts high accuracy temperature detection and compensation circuit, and the battery life is longer 412V 24V: The solar charge controller has automatic identification of 12V 24V system voltage and three stage battery power display. with exquisite structural design and circuit design 5USB 5V Output: The MPPT solar charge controller has overcharge, overdischarge, overcurrent, short circuit, anti reverse connection protection. The 5V output with USB connector meets the charging needs of digital productsSpecificationItem Type: Solar Charge ControllerMaterial:ABSProduct Size: Approx. 13.2 x 10 x 3.2cm / 5.2 x 3.9 x 1.3inIndicator Light:Solar: Charging Status Indicator, Steady Light Means Charging, Flashing Means Entering Floating Charging State.Load: Discharge Status Indicator, when the Load Indicator is On, It Means That the Battery is Allowed to Output, but It Does Not Mean Whether There is Actual Output Current.Battery: Battery Level IndicatorRated Charging Current: 20ASystem Voltage: 12V 24V Automatic AdaptationMPPT Tracking Efficiency: Maximum 99%Overload and Short Circuit Protection: 1.5 Times Rated CurrentNo Load Loss: