Question: Can You Just Disconnect The Negative Terminal?

What happens if you connect the negative terminal first?

The negative cable is connected to the body/chassis of the car.

If you connect the negative first, then the positive, if you happen to touch the wrench to something metal while it is touching the positive terminal, that’s a short – because the chassis is already connected to the negative battery terminal..

Which terminal do you disconnect first on a car battery?

Always remove the negative cable first. Use a wrench to loosen the nut on the black/negative (-) end of the battery. Detach the black/negative (-) cable from the battery. Detach the red/positive (+) cable from the battery.

What happens if you don’t disconnect the negative battery cable?

The electrical power in a car’s engine is activated by the battery. Contact between the negative battery terminal and the battery, even if the cable is not clamped onto the battery, may reactivate the electrical system within the car.

Why do you disconnect negative terminal first?

By removing the negative battery cable you are disconnecting the battery from the chassis of your vehicle. If you begin to remove the positive side before the negative and your wrench would make contact with any part of the vehicle, then you could cause a short in the system.

Which battery terminal Do I disconnect for storage?

The low-tech solution is to disconnect the negative battery cable. You’ll likely lose the stereo presets, time and other settings. If you want to keep those settings and ensure that your battery starts the moment you return, purchase a battery tender, also known as a trickle charger.

How long can a car sit without being driven?

But when your vehicle is sitting, your car’s battery will likely go dead in just two or three months. Why? Because when you drive your car, the vehicle’s alternator continually recharges the battery to replenish the power you’re using. No driving means no charging — and a dead battery.

What terminal do you disconnect when working on a car?

Disconnect the Battery Cables Make sure you disconnect the negative terminal first. Lay the disconnected negative cable carefully to one side, making sure it’s well away from the battery terminal. Disconnect the cable from the positive battery terminal in the same way, then lay it to one side.

How do you keep a car battery from going flat when not in use?

If you’re not going out, you can keep battery issues at bay by turning the engine over until your vehicle is up to working temperature, while stationary in a parking space or on your drive. If you do this and notice any engine warning lights come on, some garages are still open to carry out essential work.

Is it OK to just disconnect the negative terminal?

“If someone is going away for a few months over the winter, they should definitely disconnect the battery. It’s the only way to prevent battery drain,” Rashidi said. … I would recommend taking the negative battery post out, and wrapping something around the end so it doesn’t touch anything while you’re not there.”

How do you disconnect a negative battery terminal?

First, unbolt the negative battery cable and disconnect it by lifting it free. It might take some wiggling and twisting to pull it off. Be sure never to let the wrench touch both the negative and positive terminals at the same time.

Should I disconnect both battery terminals?

No, it won’t. You can disconnect whichever terminal you want, or even both, it won’t discharge. Whichever one you choose results in an open circuit so no current can possibly flow.