Model 10A Rated charge current 10A Rated discharge current 10A MPPT efficiency Max:99% . Over load, short circuit protection 1.5 rated current . No load current Less than 10mA . Over voltage protection 16V; x2/24V Voltage of stop charging 14.7V; x2/24V . Discharge recovery voltage 12.0V; x2/24V Max PV Input Voltage 50V Colour: Black Material: plastic + metal Over discharge voltage 10.8V; x2/24V USB output 5V 1A Working temperature -35~+55 Dimension of controller 131x99.5x29.5(mm)(LxWxH) Product Overview: 1. Use single-chip microcomputer control, has the advantages of intelligent, strong adaptability, reliable function. 2. Adopts the MPPT technology, can work in the maximum power point of the I-V curves, the efficiency is up to 99%. 3. With high precision temperature detection and compensation circuit, longer battery life. 4. three stage of battery display, can intuitively understand of the working status of the controller. 5. Delicate structure design and highly precise circuit design, allowing the space of the controller to be maximize. 6. With over charging, over discharging, overload, short circuit and reverse polarity protection. 7. With USB 5V output, can charge different digital products. Installation Instructions: Please first connect the battery, and then connect the solar panel and the load in order. The controller has reverse polarity protection internally, but if the connection error still may damage your controller. Please make sure the voltage and current are within the rated range of controller Package Contents:1 * Solar Charge Controller Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.