... current , 1A for USB, 3A for DC Input interface, DC interface X1 Output interface , 4 (2 for USB, 2 for DC) For USB,Output voltage , 3 ... , Loading light for 3.3V (red for working) 10,output interface for USB11,Slide switch for choosing 8.4V,5V or ... is not working,please close it.)13,DC output interface 14,Switch for USB output.. More models1) Battery 12V4.5AH Solar panel ...