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28
votes
3answers
11k views

Jump starting a dead battery: Connect black wire to negative pole of battery or grounded metal?

Most of the advice I've seen for jump starting cars instructs to connect the black wire to a bare piece of metal on the car with the dead battery. However, I've always just hooked up both poles to the ...
14
votes
5answers
73k views

Is it possible to harm your car by giving someone a boost?

This post explains why it's a potential hazard to clip to the negative post on the dead battery when giving a boost. But I've also been told that I could damage the electronics in my own car if I give ...
12
votes
3answers
2k views

Why is gas around a car battery only at risk of ignition from jumper cables?

As pointed out in Jump starting a dead battery: Connect black wire to negative pole of battery or grounded metal?, you connect the black jumper cable to the dead car's chassis to avoid sparks made ...
10
votes
5answers
47k views

How do I determine what type of jumper cable I should carry?

I recently bought a used car, and it didn't come with any jumper cables, so I'm going to buy some. I briefly looked around at a store and online, and there seems to be a wide variety of prices and ...
10
votes
1answer
411 views

What is the safest way to jumpstart a car surrounded by snow, ice and water? Can I get electrocuted?

All of the water and snow in the coming days can make jumpstarting a car pretty unnerving. With all the electricity in car batteries and jumper cables laying in snow and water, what are the concerns? ...
10
votes
3answers
15k views

Using a car with an inaccessible negative battery terminal to jump start

When trying to jump start my Volvo XC-60, I came across a very unexpected problem. I tried to use our 2nd vehicle, a 2010 Ford Escape, as the assisting car to jump start mine. But when I looked at ...
8
votes
2answers
3k views

Why should I connect the red/positive terminal first when jump starting?

So, it's fairly popular consensus online that it's red/positive clips to the positive/red posts, then the black/negative clip to the frame One site mentions sparks, but you'll still get a spark when ...
8
votes
4answers
5k views

Can I jumpstart a non-hybrid car from a hybrid or full electric car?

This morning I had starter battery troubles with my 2001 VW Eurovan. As it happened, my father-in-law arrived just at the right time in his fancy new Toyota Camry hybrid. So we opened the hoods, dug ...
7
votes
3answers
227 views

Portable jumpstart kits: why aren't regular car batteries this small?

I was looking at the details of this jumpstart product: It claims to be 2 lbs and 14.2 x 12 x 3.5 inches, which I think is for the outer black canvas case, so I would guess the actual device is ...
7
votes
1answer
111 views

How can I jump the solenoid in a starter?

My friend and I recently tried to investigate why his dad's '98 Pajero wasn't starting after heavy rains. After establishing that the starter relay was fine, I was hoping that tapping the starter ...
6
votes
9answers
3k views

2 Volts on Car Battery

My car battery has gone completely flat after leaving my car parked up for about a month. Tried turning over the car today, and none of the lights on the dash light up. Ran a multimeter across the ...
6
votes
2answers
187 views

Can a conventional car be used to charge an electric car?

A friend who drives a Leaf recently came very close to running out of charge, which prompted another friend to ask if it was possible to "jumpstart" a Leaf from another car. Obviously you couldn't do ...
6
votes
1answer
3k views

Why does my 2013 Honda Fit's horn sound when I am jump starting my car?

I had to jump start my car recently, and couldn't get the horn to turn off for a long time. I'm still not sure what actually caused it to stop. The horn sounded on and off continuously from the moment ...
6
votes
1answer
102 views

Starting using a deep-cycle battery

This weekend, during a camping trip, the starter battery on my 2001 VW Eurovan camper started to show signs of weakness - cranking was much slower than usual and took about 5 attempts to get the ...
5
votes
4answers
9k views

Jumping car with too many amps?

Is it bad to jump your car with too many amps (i.e., with a 1000 amp jumper vs. a 400 amp jumper)? Or does the car regulate how many amps it will take? EDIT: I was told 400 amps is enough for most ...
5
votes
5answers
193 views

When jump-starting a car, won't there be a huge back current into the dead battery?

So imagine I have car D with the dead battery and car G with the good battery. Initially, both cars are turned off. I hook up car G to car D in the proper order. Before I start either car, won't ...
5
votes
4answers
422k views

The car won't start, not even click, but everything else works fine in the car

The car has powerful new battery (1 week old). I drove the car and after 4 hours, the car will not start, not even click when you try to start the car? All the lights are ok and they are not dim. What ...
5
votes
3answers
680 views

Is there a risk of a spark igniting hydrogen when removing or installing a battery?

Guides to jumping a car with a dead battery commonly advise that the cable from the negative terminal of the good battery be connected to the chassis of the stalled car rather than to the negative ...
5
votes
1answer
91 views

Motorcycle Starting Issue - no longer starting after attempting to jump with a car battery

I tried jump start my bike with my car battery because the motorcycle battery was really low and would not start. I mistakenly touched both ends of the jump leads together and cause a big spark, ...
4
votes
2answers
2k views

Does a jump starter with lower amperage than your car battery work?

I have a 3.0 litre V6 Diesel Jaguar XJ which has a 850amp battery. A fair number of people on this 400amp Amazon jump starter say it started their 3.0 litre cars fine. ...
4
votes
2answers
212 views

Can I use any portable powerbank to jump start a car

Say I have some ordinary portable powerbanks I use for my smartphone, I wonder if all of them are able to jump start a car with flat battery as long as I have a correct connector (e.g. clamp). Or ...
4
votes
1answer
163 views

Is it necessary to have the good car's engine running when jumpstarting

When jump-starting a vehicle, one first connects the positive and negative terminals between the two cars: positive to positive and negative (good battery) to a bolt head on the vehicle with the dead ...
4
votes
1answer
1k views

2007 honda cr-v dead battery, electrical fuses blown

Honda CR-V 2007 I parked this car on Friday. It would not start on Sunday and the cd changer changed a bunch every time I tried and a few other dash lights came on. It was cold during the 2 days ...
3
votes
1answer
4k views

Car starts with push start but not with jump leads

Perhaps somebody can identify this issue. The car is a 2003 BMW Z4. The symptoms are: Car wouldn't start last week Jump leads did nothing Push started the car in 2nd, engine starts. Took The car ...
3
votes
1answer
187 views

How do I know if a jump starter is suitable for my car?

My car (a Toyota Avensis 2001 Diesel 2.0L) often lays idle for long periods. During these periods the battery runs down and it is unable to start. I recognise that the car should be driven more often ...
3
votes
1answer
76 views

When jump starting a car why not hook up the negative on the donor car last? [duplicate]

I understand the safety concerns leading to grounding to the frame or engine for the car with a dead battery. From what I've read the dead battery is the one with a chance of venting hydrogen, but ...
3
votes
3answers
4k views

What could cause a 2001 Toyota Echo not to start (constant clicking)?

I have a 2001 Toyota Echo that is not starting. The eclectrical seems to be fine (lights, console, everything boots up), but when trying to start there's just a constant clicking, no turn over. Doing ...
3
votes
1answer
295 views

Chevy Cobalt key stuck in ignition, battery dead

I've got Chevy Cobalt 2007 with key stuck in ignition and dead battery. The battery is located in the trunk. The trunk could be opened either using the button (oh no, cannot do that because the ...
3
votes
0answers
14 views

Dodge Charger with Excalibur AL-1510-EDP security not starting with regular key

I own a Dodge Charger which is equipped with Excalibur AL-1510-EDP security system. My car battery went dead couple of days back and when I jump started it, it stopped working with my regular key. ...
2
votes
2answers
5k views

How to access negative battery terminal in 04 Pontiac Montana

So my hand is all scuffed up from trying to get to the (-) terminal for jumper cables to jump my Ford Focus with the defective trunk latch which apparently has been draining my battery. The fuse box ...
2
votes
1answer
26 views

2005 4 cyl Ford Escape

My daughter's 17 and pretty smart. Her Escape wouldn't turn over this morning, sounded like she just needed to jump it. She's never done it before, I'm at work, so I told her to get her friend and ...
2
votes
1answer
223 views

Where is positive and negative terminals under hood of 2006 Volvo S60?

I need to jump start a 2008 Ford Focus and I am using my wife's 2006 S60 Volvo. This Volvo has the battery in the trunk and the owner's manual says not to use that for jump starts. Instead, it ...
2
votes
1answer
61 views

1998 Jeep Grand Cherokee battery issues

Nearing 200,000 miles on this car, so it's beginning to have issues here and there. The most recent being that it dies when not being driven. This car was driven on a daily basis until I went to ...
2
votes
1answer
981 views

can starting a battery dead car cause damage to anything?

I just imported car from japan, I had to drive 1000km from shipping port to get it home. Problem is Battery turned out to be plain dead. I stopped once at the fuel station and couldn't get it back ...
2
votes
0answers
26 views

starting a diesel tractor

I have a diesel tractor with a generator.after sitting for a long period the battery was low so I used a portable jumper battery but mistakenly hooked up the cables in reverse. this caused smoke to ...
1
vote
2answers
74 views

Hyundai XG350 - Positive or Negative Ground Battery?

I have a 2002 Hyundai XG350, and all of the wires from the battery run out of sight before connecting to the chassis. There is only one wire coming off of the negative, and a number of different ...
1
vote
2answers
101 views

Do jump starts with a place for full-size car battery exist?

I have an old battery left from the old car and I need a jump starter kit. It seems all jump starters have integrated motorcycle battery inside. I curious whether jump starters with a place for a car ...
1
vote
1answer
785 views

My 2000 Chevy impala won't start

At first when I tried to start it the lights came on and the check engine light came on but no start. Now I get no reaction at all. Need help
1
vote
1answer
165 views

Sound made in Ford Focus when plugged in

I had a dead battery this morning and plugged in my '03 Focus for the first time to charge up enough to get the dang thing out of the garage. I was a little bit worried when I plugged it in because I ...
0
votes
1answer
129 views

What's with my Toyota Tercel after I jump started another person's vehicle?

I jump started my daughter's vehicle which is a 6 cylinder with my Toyota 4 cylinder. Will that affect my Toyota car? I'm not sure if it was a existing problem and jump starting it made it worse. ...