Dead battery but dashboard lights still work but bike ownt start.

K my bike began shaking while I was looking for a parking space on a parking lot. When I found a space I parked my bike and when I came back it would not start. The dashboard lights light up but when I attempt to start the bike the lights go out and the bike makes a clicking sound and that's it. I asked someone to push me in 2nd gear while clutch down and it turned one but it still was shaking like if it the bike wanted to die. At home I just start the bike and I turns on naturally, but when I unplug the cables it loses power and in moments it dies again not been able to turn back on. So in 2 months my battery will be a year old. Do I need a new battery or can this one be charged? or is there a different problem ?