Question: Can I Just Disconnect Positive Terminal?

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.”.

Do you hook up negative or positive first?

When disconnecting the cables from the old battery, disconnect the negative first, then the positive. Connect the new battery in the reverse order, positive then negative.” When you are replacing your car battery, It isn’t always easy to remember the order in which to disconnect and reconnect the terminals.

How long should I disconnect my car battery to reset computer?

It’s a real tight fit, but if you can find it and disconnect it, leave it disconnected for 30 seconds. The nice thing about this method over the “disconnect the negative cable” method is that you don’t have to reprogram your radio! If you can’t find it, then do the negative cable – again for about 30 seconds.

Do I need to 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. I am assuming you have a short you can’t find and want to disconnect the battery.

Which terminal should you disconnect first?

Always work on the negative terminal before the positive when you disconnect your battery. Grab a socket from your socket kit and hold it near, but not against, the nut on the negative terminal of your battery.

What happens when you disconnect the negative battery cable?

If you remove the negative clamp and inadvertently complete a circuit to ground, there will be no current flow because the ground clamp is already grounded. Subsequent shorting of the positive terminal to ground will then produce no current flow because the current has no return path to the negative post.

Why do you disconnect the 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.

Is it bad to let a car sit for a month?

If a car sits parked for a month or more, the battery may lose so much power that it will need a jump-start — or a charge before the engine will start. … Here are more reasons not to let your car sit for several weeks or longer: Tires slowly lose air under all conditions but especially during cold weather.

Which battery cable should you disconnect when working on a vehicle?

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.

What happens if you disconnect the positive terminal first?

Electrically it makes no difference which terminal you disconnect first as either one will remove power from all the electronics in the car. … It can fall across either terminal and the car and nothing will happen.

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 do you disconnect positive battery terminals?

Follow these steps and the operation will go smoothly and quickly.Step 1: Locate the Battery. Most vehicles have them bolted in place under the hood. … Step 2: Locate the Positive and Negative Terminals. … Step 3: Find the Right Wrenches. … Step 4: Unbolt the Cables. … Step 5: Remove the Battery Hold-Down Clamp.

Why you should remove the positive terminal after removing the negative?

Usually removing the positive cable first will cause no problems. However, removing the negative cable first is safer because it eliminates the possibility of having a short circuit if you inadvertently touch a tool to both the positive terminal and a metal part of the car at the same time.

Should Battery Disconnect be on positive or negative?

The negative cable connects to the body ground already—so there’s no additional danger if it rubs. It’s the same principle as why you should always disconnect the battery’s negative side first before performing electrical service.

When a battery is disconnected the earth lead should always be disconnected first because?

The grounded terminal should be disconnected first to ensure that a battery dead-short does not occur, should the spanner disconnecting the other one contact a nearby grounded metal part. A battery dead-short will result in short circuit currents of the order of hundreds of amperes and heavy sparks.