Question 8263
Which liquid must be used to refill the cells of a battery?
- Distilled water.
- Water and oil.
- Water and antifreeze.
Show answer and explanation
Correct answer: Distilled water.
Top up the cells with distilled water. The fluid inside, the electrolyte, is a mixture of acid and water, and only the water evaporates with use. That is why you add only distilled water, never acid, oil, or antifreeze. In the image, distilled water is poured through a funnel into one of the cells, and the side of the battery has minimum and maximum level marks.