
You Will Need
* Eye goggles
* Distilled water
* Protective gloves
* Coca-Cola
* A damp cloth
* An old toothbrush
* And an old kitchen baster
* A tool found in auto parts stores called a terminal cleaner (optional)
Cool engine : Make sure the engine is off and the car is cool.
Wear goggles : Put on protective eye goggles. 12:47:58
Unscrew battery caps : Unscrew the battery’s removable battery caps; there are usually two.If your car doesn’t have a battery cap, it probably has a small “eye.” A green or yellow “eye” indicates a charged battery, but a black “eye” means you need to head to your local auto shop.
Check water level : Look inside each opening—known as the “cell”—and find the little ring, or the “Full” line, near the bottom of the opening. Check the water level in comparison to this line. If it’s low, add some distilled water.
Replace caps : Replace the caps.
Check terminal ends : Check the battery terminal ends—the cable ends that connect the battery cables to the battery terminals. If you see heavy corrosion—it will look like white or bluish fuzz—have it checked out by a mechanic.
Apply sodium bicarbonate : If you see light corrosion on the terminal ends, put on your protective gloves and pour a cola or baking soda dissolved in water over them. Both contain sodium bicarbonate, which attacks the acid that has formed on your battery.
Rinse : Rinse the battery with water to flush away any residue, and then close the hood.
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