This disclosure details exemplary battery pack designs for use in electrified vehicles. An exemplary battery pack may include an enclosure assembly, one or more battery arrays housed within the enclosure assembly, and one or more channel brackets for routing and retaining battery internal components (e.g., wiring harnesses, etc.) within internal channels of the battery pack. The channel brackets may include a mounting platform having a loop that is connected to the mounting platform by a tether. A clip fastener may be received through both the loop and the mounting platform for mounting the channel brackets in place. The loop of the channel bracket is configured to increase the integrity of the clip fastener joint.