Which battery cable do i disconnect first

This is for the same reasoning as when reconnecting the battery. It keeps sparks from happening and shorts from happening. This applies to the good battery as well as the dead battery. When disconnecting the battery or jumper cables it is the opposite. You disconnect the negative first and then the positive. There are a variety of times when you need to connect a battery into your car or other piece of equipment such as a mower or boat.

When you need to connect the battery it is important to connect the positive first and then the negative. This keeps you safe as well as the equipment safe. A circuit can be made when connecting the battery be it the wires touching something or the tools that you are using.

Buyer's Guide. Type keyword s to search. Today's Top Stories. Getty Images. Step 1: Locate the Battery Most vehicles have them bolted in place under the hood. Step 2: Locate the Positive and Negative Terminals. Jeff Xu Car and Driver.

Battery Exide Automotive Battery. DieHard Automotive Battery. Interstate Automotive Battery. This content is created and maintained by a third party, and imported onto this page to help users provide their email addresses. You may be able to find more information about this and similar content at piano.

Commercial Vehicle K K Find a dealer. Which car battery terminal to connect first? Installing the new battery Before placing the new battery in position, ensure that both terminals and the cables are rust-free.

You have now completely disconnected and removed the car battery. Batteries are usually heavy, especially if you drive a truck or an SUV which has a battery weighing almost 40 pounds. To install the new battery you can use the same guide but backward.

Put the battery in place and fit the bracket or strap. Start with installing the positive terminal and the negative terminal after. Remember that you often have to re-set the clock and radio settings in your car after you replaced you battery.

If you have disconnected your car battery after a long time, you might have noticed that the terminals have corrosion on them. The things you would require are:. Making the cleaner is simple; just mix one tablespoon of baking soda in one cup of water and mix it well. Next, dip the toothbrush into the cleaner and start cleaning the terminals.

You might need to apply some force as the dust and grime may be difficult to remove. Scrub the terminals thoroughly until no dust or grime is visible. Once the corrosion is removed, spray water on the terminals and wipe gently with a clean cloth or rag. Once the terminals have been cleaned and dried, apply petroleum jelly on them which will provide some lubrication and prevent any further corrosion. Note: Before you begin cleaning the terminals, inspect the car battery to see if it is leaking, swollen or has any visible damage.

If the battery is damaged then cleaning the terminals will be no good and you would still have to purchase a new battery. The car battery is an essential component that helps to start the engine and power all the electrical modules in the car.