"Batter Up" ditulis oleh Jared Lee, [[Yang Hyun-suk]], selaku pendiri YG Entertainment, Asa, salahanggota satudari member [[BABYMONSTER]], Choi Hyun-suk, anggota dari [[Treasure|TREASURE]], Lee Chan-hyuk dari [[AKMU]], dan tim penulis lagu Where the Noise dan BigTone. Lagu tersebut dikomposisikan oleh Chaz Mishan, Yang Hyun-suk, Dee.P, Jared Lee, dan Asa.<ref>{{Cite web|last=기자|first=김현숙 Mk스포츠|title=악뮤 이찬혁·트레저 최현석 참여…베이비몬스터 ‘BATTER UP’ 프로듀서진 공개|url=https://entertain.naver.com/read?oid=410&aid=0000969283|website=entertain.naver.com|language=ko|access-date=2023-12-10}}</ref> Lagu 'Batter Up' tersebut memiliki penggambaran sebagai lagu dengan alunan "hip-hop dan trap".<ref>{{Cite web|title=YG 신인 베이비몬스터, 데뷔곡 ‘BATTER UP’ 최초 공개…힙합 스웨그|url=https://entertain.naver.com/read?oid=609&aid=0000795662|website=entertain.naver.com|language=ko|access-date=2023-12-10}}</ref>
==Posisi Peringkat==
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! scope="row" | [[Hong Kong Songs|Hong Kong]]Hongkong (''[[Billboard (magazine)|Billboard]]'')
| 25
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! scope="row" | JapanJepang ([[Japan Hot 100]])
| 100
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! scope="row" | SingaporeSingapura ([[Recording Industry Association Singapore|RIAS]])
| 16
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! scope="row" | South Korea Selatan ([[Circle Digital Chart|Circle]])
| 123
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! scope="row" | USAmerika Serikat [[World Digital Song Sales]] (''[[Billboard (magazine)|Billboard]]'')
