Asa came to power close to the end of Jeroboam"s reign over Israel in910 B.C. Asa reigned from911-870 B.C, 41years, an unusually long reign that probably began when he was quite young (cf. 1 Kings 15:2). It was his grandmother (NIV), not his mother (NASB), who bore the name Maacah (cf. 1 Kings 15:2). The queen mother (dowager), not the king"s wife, was the first lady in the kingdom. [1][source]
The rightness of Asa"s acts is clear from his removing the pagan worship practices of Rehoboam and Abijam ( 1 Kings 15:12-13; cf. Deuteronomy 9:21). He did away with some of the high places ( 2 Chronicles 14:3), but not all of them ( 1 Kings 15:14). However, his heart was true to Yahweh all his days ( 1 Kings 15:14), even though he became somewhat self-reliant later in his life ( 2 Chronicles 16:7-10). [source][source][source]