oh man.....,mine is 13.3 max n idle around 12.2/12.0
But when i rev,the voltage goes up but stuck at 13.3 or 13 like tat
issit battery gonna kaput liao arr.....
seems like batt is charging but did not go up as u mention
@WTBH
1st thing u nid to do is chek battery contact.make sure its tight
2nd is u chek the fuses....
3rd is u nid to chek e starter relay
If all abovd is gd.....,then its e starter motor....
probably its bad....