outlander 800 not starting

hi new here I have been having a starting problem with my 2006 outlander 800. I changed the battery and jump the coil and it turns over but weak. when I try the green start button with ignition on it just clicks and nothing. the lights come on and everything but won t start. I tried the winch and same clicking (dead battery sound) the fuses appear o k in front and connections on battery are clean and the coil too. The starter I don t know how to get to it yet and should check the connections but when I jump the coil it does turn over weak. any ideas , thanks