電池水 [电－－]

Jyutping din6 ci4 seoi2
Pinyin diàn chí shuǐ

Definitions (粵典–words.hk)
  1. 名詞
    傳統​汽車​電池​（​鉛酸​電池​）​作用​既電解​液體​。
    electrolyte of lead acid battery. Commonly seen in vehicle 12V battery.