could a bad batt couse problems 4×4 rzr 800

o have a 2008 rzr 800 and when I start it it seams to start slow but always starts. for the first 30 mins or so the gear indicator does not show up then after awhile it stars working and 4×4 starts to work. is this a wire problem or bad batt. cause almost seams as the batt slowly charges and becomes stronger all starts to work fine. im planning on a new batt over all but just curious if anyone out there has come across this problem before with a batt being the problem that 4×4 would not work. thanks for any replys or advise on this post.