Battery Heater Blanket: Operation
WARNING: This page is about a different car, the 2004 Dodge Intrepid, 2004 Chrysler Intrepid, 2004 Chrysler Concorde, and 2004 Chrysler 300M. However, it is still accessible from the selected car via links, so may be relevant.
The temperature of the battery can affect battery performance. Only DAIMLERCHRYSLER approved battery blanket/block heater combination should be used. The battery blanket heater is designed to provide optimum charging system performance in very cold ambient temperatures below -17.8°C (0°F).