![]() If any of the cells looks low, add distilled water only and take care to not overfill the battery. If the battery has removable caps, carefully pry the caps off and check the level of the water. Don’t touch your face until after you’ve washed your hands. If the battery terminals and posts have a lot of acid buildup, wear eye protection and a mask so the airborne corrosion does not contact your eyes, nose and mouth. If you look on the top of the battery, you can see which is which – the ground cable will have a negative (-) sign and the power or positive cable will have a plus (+) sign.Ĭlean the battery terminals with a terminal cleaning brush and a mixture of baking soda and water to neutralize the battery acid. ![]() This is always the black cable unless someone replaced the cables with the wrong colors. Once you get down to the battery, remove the negative or ground cable first. ![]() If you have anything on, it could cause the battery to arc while you are working with it. Some batteries are easily accessible however, some are under or in the fender and some may even be in the trunk or under the seat depending on the make and model of your vehicle.īe sure all accessories are off and the lights, including the interior light, are off. Before you even get started, if you have to remove the battery from the vehicle to charge it, be sure you have the tools for the job. It is very easy to get a good shock if the battery does have some juice. ![]() You should know which terminal to remove first if you have to remove the battery, which terminal to hook up first on the charger, how long to charge a dead car battery and more.īefore we get into how to charge a car battery at home, you need to know how to prepare to charge the battery. Charging a dead car battery is more than simply hooking up a charger if you want to do this job safely. ![]()
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