What happens if i touch both battery terminals

Power is delivered to the light bulb from the positive side of the battery via the wiring harness, but the current is returned to the negative side of the battery through the body of the vehicle. The negative side is the ground. The negative battery cable is connected directly to the engine or the body so mostly everything in the vehicle that is made of metal is grounded.

This means that if you take the power wire off of the light bulb, and touch it to metal, you will get a spark. Touching a power wire to grounded metal is just like touching a power wire to the negative battery post. So the reason for all this yakkety-yak is to help you to understand the most important lesson when it comes to disconnecting a battery.

Always disconnect the negative side first. See paragraph 3. These days battery terminals come in all shapes and sizes, and connect to the posts in a variety of different ways. The one thing that they all have in common is a nut or bolt fastener that loosens to free up the terminal. Under normal circumstances you should never have to remove the fastener, only loosen it. Loosening the fastener should open up the terminal so it can be pulled off of the battery post. Over time the terminals can accumulate some corrosion, causing the terminal to stay clamped onto the post even after the fastener has been loosened.

When this happens you can usually use a pair of pliers to spread the terminal, allowing it to be removed from the post. There is a tool called a Battery Terminal Puller that works very well for removing stubborn terminals. It clamps around the terminal while a screw pushes on the post, lifting off the terminal. Source: lifewire. You might also like Long life batteries for each type of vehicles. Leave a Reply Want to join the discussion?

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Fully charged according to the battery charger but the voltage is 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.

Can you touch the positive terminal of a car battery? Category: automotive road side assistance. Merely touching the positive terminal of a 12V battery does not fulfill that requirement, unless some part of you simultaneously has a low resistance path to the negative terminal of that same battery. If you have dry hands, you probably have fairly high resistance and won't feel a shock. Can 12v kill you? Can you get shocked by a AA battery? Can you shock yourself with a 9 volt battery? What to do if you get an electric shock from a plug?

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What happens if you connect the negative terminal first? Similar Asks.