We have an 08 Essence. I have replaced batteries from the local Freightliner dealer twice. They run sales fairly regularly. FL part number is ABP/31S925. 2015 price was $169.98 Sale price.
My contact there says to check if I need them and the last time he sold me a slightly smaller CA battery (pair) for about what full price would have been. The sale makes a lot of difference in prices.
The original batteries were EPM/AE1131XMF (2011 price on these were $276)
If you google the part numbers and look at the Alliance site, you can cross reference with other brands
horsedoc
2008 Damon Essence
2013 Jeep Sahara Unlimited
Blue Ox tow