WARNING: This page is about a different car, the 2014 Hyundai Santa Fe Sport and 2013 Hyundai Santa Fe Sport. However, it is still accessible from the selected car via links, so may be relevant.
Disconnect the battery negative (-) cable.
Disconnect the battery sensor connector (A).
Remove the battery negative (-) cable after removing the bolts (B).
Fig 1: Identifying Battery Negative Cable And Bolts