Accidentally connected positive to negative battery

The negative terminal was connected as well at the time this happened. The car is an 03 V70 24L non-turbo and it is running poorly.

Instead of connecting the positive cable to the positive battery terminal and the negative - cable to the negative battery terminal you hooked them up backward.

Accidentally connected positive to negative battery. I accidentally touched the positive battery wire to the negative post on the new battery and the wire smoked a little. I went on to connect the wires to the correct posts tightened the terminals and now the truck wont start it wont do anything. A few mechanics have said it was a fuse but all of the fuses seem to be ok.

Charging a battery requires that the positive cable connects to the positive terminal and the negative cable connects to the negative terminal. When charging a battery from another battery the cables must meet this requirement on both ends. The battery terminals and cables are typically labeled or color-coded making it simple to match the connections.

Doing this will not cause any problem because the battery negative and the car body to which the radio and amp is bolted are connected together. Adding the amp feed will have no effect. The positive battery terminal is the dangerous one when the negative is still connected to ground.

Never connect it to anything other than a correct feed. When I was installing a new battery I accidentally touched the negative and positive cables to the wrong terminals for a second. The car horn sounded and it sparked.

I quickly pulled the cables off and put them on the correct terminals. Now the car will not start no lights nothing. I Checked the battery and it is measuring 126 volts.

I wanted to make sure the connections were tight on my battery and I started to tighten the positive terminal with the little wrench included in the toolkit and as I was making sure the little bolt was tight LOTS of sparks flew and crackling and it scared the hell out of me. The negative terminal was connected as well at the time this happened. From what you described the only current path you created was from the positive battery post through the wrench to the seat supposedly ground back up a cable to the negative battery post.

My sense of logic says the problem is located along that path. Disconnect the battery negative first. Anybody ever heard of resetting the computer by disconnecting the positive battery lead and touching it off on the negative battery terminal.

I had a guy tell me that this car learns the driving habits of the operator and I may need to reset the computer by doing this. The car is an 03 V70 24L non-turbo and it is running poorly. The whole body of the car is usually connected to the minus pole.

And you can accidentally hit that body with the positive lead. So connecting the lead first is safer. Whole car except a few parts like the positive pole are connected.

Any mistake with the other lead will lead to a short. Installed new battery backward the car wont start. You decided to change the car battery but accidentally put the cables backward.

Instead of connecting the positive cable to the positive battery terminal and the negative - cable to the negative battery terminal you hooked them up backward. All of a sudden you see a scary spark and your car goes completely dead. Connecting a Battery to the Charger with Reverse Polarity.

If by chance accidentally or intentionally the battery charger or solar panel Inverter etc connected to the wrong way around ie. The charger negative and positive connected to the battery positive and negative. To verify that use a test light or digital voltmeter.

Put one probe on the batterys negative post and the other one right on an unpainted bare surface on the engine or transmission. You should find 000 volts because electrically those two points are the same point in the circuit. Connecting the positive terminal of each battery to the negative terminal of the other battery will result in a huge surge of electrical current between the two batteries.

This will cause the batteries to heat very quickly and in lead-acid type batteries – the most common type – it will result in the generation of a large amount of hydrogen gas within the charged battery. To join batteries in parallel use a jumper wire to connect both the positive terminals and another jumper wire to connect both the negative terminals of both batteries to each other. Negative to negative and positive to positive.

You CAN connect your load to ONE of the batteries. I accidentally touched the positive battery post with my wrench and got a spark. So after that happened I then removed the negative battery connect and proceeded to replace my power brake booster.

After I was finished I replaced the negative battery post and went. Usually the terminals are marked with a negative - and a positive sign. You must connect the jumper cables to the battery properly to avoid major problems.

Heres how jumper cables should be connected. One end of the red positive jumper cable connects to the positive terminal of the dead battery. The other end of the red cable connects to the positive terminal of the good battery.

One end of the black negative jumper cable connects to the negative battery. If you connect one negative of one battery to one positive of the other battery and put the load between the remaining negative and positive terminals you have created an 18 V battery with the. Until you connect the negative cables to the negative posts no electricity is flowing from the battery.

I reconnect my battery the same way as if I were try to jump start a carpositive first and then negative. Connecting positive wire to negative wire of the second battery just means you have created a battery with the voltage being the summation of the two batteries individual voltage. But things can get cruel when you connect the other terminal to the battery as well.

You can disconnect the positive terminal of a car battery first as long as your tools do not bridge a connection between the positive terminal and any metal surface of the vehicle. Doing so will create a short since the negative terminal is grounded to the frame and fuses will pop tools can melt and the battery could explode.