1Features with short circuit protection, overcurrent protection, overcharge and overdischarge protection, store electrical energy function. 2Widely used in solar street lights, solar monitoring, solar Internet of things, solar lights, irrigation systems, intelligent systems etc. 3Small in size and light in weight, good waterproof heat dissipation performance, high charging efficiency. 4Built to meet standard specification, strictly follow factory quality control. 5This product has the characteristics of low power consumption, stable charge and discharge, easy installation and maintenance. Condition: 100% Item Type: Controller Material: Aluminum Color: As shown in the picture Battery Properties/Capacity: 18650 lithium battery 12V 4000MAH-200000MAH(Included) Solar Peak Input Voltage: 30V, 50V Load Voltage Range: 9.6-12.6V, 10.0 -14.6 V Static Power Consumption:1 x Controller 2 x Connecting Line 1 x Bag of Screw(12pcs) 1 x Instruction Manual 1.Pleaseallow12cmerrorduetomanualmeasurement.Thanksforyourunderstanding.2.Monitorsarenotcalibratedsame,itemcolordisplayedinphotosmaybeshowingslightlydifferentfromtherealobject.Pleasetaketherealoneasstandard.3.Strictlyfollowtheinstructions.