Originally Posted by huntergreen
the mfgs cheap out when ever they can, i am sure if this wan't serving some purpose they would not include it.
However, when you have to accomodate anyone/everyone in all corners of Northern America and its [at times] inclement/extreme weather conditions, it's in your [Chrysler's] best interest to cover your ass and have a battery that will last AT LEAST up to its warranty period; to avoid [possible]warranty/replacement issues.
Like I mentioned, it's the extreme cold that kills automotive batteries and these protective mats are there to keep the engine compartment warmth [insulator] within the battery's immediate area for optimal operating conditions as well as longevity. The extreme cold "freezes" the chemical reactions needed in a battery's cells thereby creating failure almost instantly; on top, a low voltage automotive battery under extreme cold [the worse combination] will simply freeze shut. Yes, sure, the extreme hot is not pleasant either for automotive batteries, but failure under these conditions is far more rare than extreme cold.
Also, it looks like it's a $0.10 piece at best.... especially at the quantity Chrysler ordered them; so it's not a part that'll break-the-bank for Chrysler.
Anyway, the reason I got rid of my insulated OEM cover is, in my neck of the woods, we never see the extreme cold temperatures mentioned above; at least not in the ten years or so I've resided here..... and I wanted to show off the DieHard Platinum logo for cosmetic reasons.
Hope this helped some.