Features: a real MPPT solar maximumpower pointtracking, automatic intelligent charge management, low power consumption 1W-100W 9V-28V is suitable 9V 12V 18V 24V solar panelsto the batteries, nickelcadmium, nickelhydrogen, lithiumbatteries (battery) charging, wind turbines solar street lamps Input and output terminals are made of highendswitching power supply forhighfrequency lowimpedance electrolytic capacitors (LowESR), ensure that the outputripple. Can effectively filter out the switching power supply glitches. Automatic intelligent three-stage charging modes. Selftracking solar power charge current automatically adjust the size. Ultra-low pressure designed to achieve low power consumption and highefficiency, professional adaptation of solarpanels Specifications: Input voltage: DC8-28V input DCvoltage. (ProhibitionAC input) Output voltage: DC5-26V stepless transmission For lower output voltage, please contact the owner. 6V battery can be charged either 12 or 8.4V, 12.6V, 16.8V lithiumbattery 7.2V, 10.8V, 14.4V lithiumiron phosphate battery 2-4 string lithiumbatteries, lithiumiron phosphate charge management board Output Current: 2A / 5Amaximum charging current in two: A version 5A B version of A 2A 5A default shipping version Charge indicator: Yes. Fast charging red light long bright red and blue lights flash alternately charged. Full automatic stop. MPPT function: a. MPPTmaximum power point automatictracking, to maximize the full use of solar charging Low pressure: 1V (as is the step-down voltage regulator, the input voltage is at least higherthan the output 1V) Low power consumption: Yes Input reverse polarityprotection: Yes Output reflux protection: Yes. Connection: There Terminals Package Includes: 1PC MPPT Solar Panel Regulator Controller note: Due to the light and screen setting difference, the item color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.