I just got my PCC (model 808D/808D-1) for my KR808-D1 batteries but sadly there is no manual. What I think I figured out is that when charging the PCC via USB, the top light is red and will eventually go green(?). When charging a battery, the bottom light will illuminate(?) Just not sure exactly what is what. Also, can I leave a battery in the PCC after its done charging? Thanks much!