So for the past 2 weeks I have been having issue with starting the car. At first the car would just click without cranking. after holding it for a while eventually the crank would kick in. Prior to this it did seem the car took longer to crank then normal but was cranking from the beginning of me turning the key. Today I tried to start the car however this time it seems that it wont start at all. I have power throughout the car but it seems sluggish i.e. the windows are slow to roll up and down. I looked at the battery and it is displaying green in the little window.

Can anyone help me?