As for the rest of the acts of Pekah, along with all his accomplishments, they are indeed written in the Book of the Chronicles of the Kings of Israel.

2 Kings 15:30
Then Hoshea son of Elah led a conspiracy against Pekah son of Remaliah. In the twentieth year of Jotham son of Uzziah, Hoshea attacked Pekah, killed him, and reigned in his place.

2 Kings 15:32
In the second year of the reign of Pekah son of Remaliah over Israel, Jotham son of Uzziah became king of Judah.

And the rest of the acts of Pekah, and all that he did, behold, they are written in the book of the chronicles of the kings of Israel.