Good product charging my 12v 5ah bike Full in a day. Getting 12.4v 0.37 amp in morning 9:30am and by 11:am 18v 0.43amp . As per specification out put will be 0.53 maximum. By pass diode is not connected with positive terminal. I brought from outside in4007 1amps diode for battery reverce protection .I am at Chennai so by 6:30am itself we will get sun rays in that time also solar panel will charge. By 8:am we are getting good sun rays. I mounted back wall of my house .