Hi all, I am stuck with this circuit. (plz look the image). The author of this circuit says that when charging a battery, the green led glows and when battery gets the full charge (about 13.5v) the charging will stop and red LED starts to glow. But in my case this red LED glows always. (even my battery has only 12.5v). Then i replace the battery with an empty one.(almost 2.2v dead battery). And now the result is the same. Then i crosschecked the circuit and i couldn't find any error in my soldering or any other parts. the components connected in the right way. So please help me to correct this. Is there any chance to conduct the transistor all time regardless the base voltage. I mean does the transistor got damaged ?.