The writer wrote that the reigns of 18 of Israel's 20 kings stood recorded in "The Chronicles of the Kings of Israel"(all except those of Tibni and Hoshea). This document is different from the canonical books of 1 and 2 Chronicles and is not extant.
Jeroboam was a strong leader. He separated Israel from Judah and reigned a long time. Nevertheless his lack of commitment to Yahweh resulted in him and Israel experiencing discipline from the Lord. During his reign Israel lost control of the area around Damascus that became an independent Aramean state. Ironically it was this area that produced enemies of Israel for many years. The Philistines also recovered some of their territory and became stronger (cf. 15:27). Moreover Israel appears to have lost control over Moab. King Abijah of Judah also defeated Jeroboam in battle (2 Chron. 13:13-20). All of these losses are evidences of God's punishment for apostasy.