Section 420 (Battery System): THERMOWRAP: Description
WARNING: This page is about a different car, the 2004 Chrysler Pacifica. However, it is still accessible from the selected car via links, so may be relevant.
A one-piece slip-on thermowrap unit shields the battery case from engine compartment heat. The thermowrap slips over the battery case (Fig 1 ) and acts like a protective jacket.