How to Disconnect Your Vehicle’s Battery

If you haven’t attempted to disconnect a battery before, we’re here to help. It’s simple and requires just a couple of tools. A battery can be disconnected anywhere, but it’s recommended that you disconnect it while at the auto repair shop or at home.

Typically, you’ll find the battery under the hood. Hopefully this is easy to do, since the vehicle’s battery is heavy.

Step By Step How to Disconnect Your Vehicle’s Battery

Step 1: Locate the Battery

Most vehicles have them bolted in place under the hood. This can be a little tricky to find. A good tip is to head toward the gas cap area to locate it.

There will be some studs sticking out from the battery. These studs must be pushed in to unhook the battery from the vehicle.

Step 2: Locate the Positive and Negative Terminals

One thing to consider is that not all batteries are the same. For vehicles with removable batteries, you will need to look for positive terminals, which are usually colored red and the negative terminals, which are usually black.

The positive terminals will be connected to the battery, and the negative terminals will be connected to the battery’s negative terminal.

Step 3: Find the Right Wrenches

When disconnecting your battery, you will need a set of specific wrenches. These wrenches may vary, depending on the type of battery you’re removing.

If it’s an AGM battery, you will need a socket wrench. If it’s a lead-acid battery, you will need a cylinder head wrench.

Step 4: Unbolt the Cables

The light socket on the battery will have two cables attached to it. You will need to disconnect these cables before removing the battery from the car.

They will have a heavy-duty clamp with a hex head. You will need to use a hex socket and ratcheting wrench to loosen the clamp. Unscrew the bolt and remove the cable.

Step 5: Remove the Battery Hold-Down Clamp

Remove the two bolts on each side of the battery, and remove the battery.

Step 6: Install New Battery

Installing the battery isn’t too difficult, especially if you have experience with working on cars. You will need to put the battery back in the same position you removed it and tighten the bolts.

You will need to connect the cables to the positive and negative terminals. If you’re using an AGM battery, be sure to connect the cables to the positive terminal.

Step 7: Test the Battery

After installing the battery, you’ll want to test it to make sure it charged fully. Run your car for about three minutes and check if the lights come on and work normally.

If they work normally, then the battery is fully charged and ready to install in your car. If they don’t work, you’ll have to replace your battery.


If all goes well, your car should now start and run fine. To test it out, you can start your car outside, and turn on the key. It should fire up without any trouble.

Running the car and letting it warm up for a while will let you know if everything is working properly. If something doesn’t look right, or if you have any problems, be sure to let us know in the comments or share your findings below. We hope you enjoyed this tutorial and good luck on your quest.

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