For the most part, this section of scripture looks very much like the accounting of these kings and their life stories as recorded from about 1 Kings 3 through 2 Kings 8. However, there are many variations between them. In some ways the Chronicles passages look more detailed, but in some instances the Kings books seem to give information on more of the rulers.
The passage that stands out to me the most is 2 Chronicles 20:12. In this story king Jehosaphat and his small army are facing the Moabites, Ammonites, and Meunites. Rather than relying on his strength, Jehoshaphat prays to the Lord, “we do not know what to do, but our eyes are upon you.” (2 Chron. 20:12b)