How to Check Car Battery Water Levels

Pry the cell covers (shown in photo outlined in red) off the battery carefully; the chemicals inside are dangerous to skin and clothing.

Look inside each cell and determine if one of them is low on water. Each cell should be full almost to the top.

Add only distilled water to all the low cells until they are full.

Replace the cell covers carefully, preventing cracking or splashing of fluids.

Recharge batter if necessary; best done with a slow trickle charge if the cells were empty.