電池が

the battery

→ 電池
phrase Rare #33,747
the battery The particle が marks 電池 (battery) as the subject; the rest of the sentence says what is happening to it.
JA: 電池が切れそうだ。
EN: The battery is about to run out.

やばい、電池がもう切れる。

Oh no, my battery's about to die.

電池が弱ってきているのでうまく動かない。

It isn’t working properly because the battery is running low.

電池が切れた。

The battery died.

電池がゼロになってる

The battery is dead.

— デッド・ドント・ダイ (2019)