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When jumping two automotive batteries, connect the positive () cable to the positive terminal of the dead battery and the other end to the positive terminal of the live battery. Then, connect the negative (-) cable to the negative terminal of the live battery and the other end to a metal surface on the car with the dead battery, away from the battery.

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4mo ago

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What would make a battery explode?

Exploding Car BatteriesSince this is in the "Car Batteries" section, this answer will be limited to automotive batteries only. However, almost all batteries can explode under the right set of conditions and circumstances. Almost all automotive batteries are of the "Lead-Acid" type. The acid in Lead-Acid batteries is Sulphuric Acid [H2SO4] and in the process of discharging and/or charging of these batteries HYDROGEN gas [H2] is created inside the battery. Some of this gas is always present inside the battery, and some always escapes to the outside via the vents in the battery cell caps.IF the "mixture ratio" [a proper amount of air mixed with the Hydrogen gas] happens to be within the "explosive range," and if any spark occurs within that gas envelope, either inside or outside of the battery, then the gas-air mixture will ignite explosively.Ignition of the gas-air mixture can occur inside the battery, or outside, and if outside, can "flashback" into/inside the battery causing it to explode.This is why all instructions regarding working with automotive batteries warn the operator to keep all open flame and/or sparks away from the battery.AND when making "jumper" wire connections, that the "last" connection to be made should be the negative cable from the jumping vehicle, and that it should be connected to a grounded part of the engine or frame of the vehicle being jump started, well AWAY FROM THE BATTERY.


What would make a car battery explode in car?

Hydrogen gas ignited by a spark. All car batteries produce it as a byproduct of the chemical reaction that makes the electricity. That's why it is recommended when jumping a battery that you make the last connection, of the negative clamp, to the frame rather than directly to the battery.


Why does your 1991 park ave still have a drain even after you replaced your battery and alternator?

You may need to find a short circuit or a bad relay. Possibly there is moisture somewhere that is jumping a connection. Automotive electrical problems are difficult to track down yourself and expensive to have someone else do it.


Where can I purchase car batteries online?

Before jumping into buying a car battery, you should always do your research. The experts at Autozone should be able to help you find the best deal for the battery for your car.


What is the proper battery cable connection when jumping two automotive batteries?

Hook up the jumper cables in this order: (1,2,3,4) (1) One end of positive cable to positive post of GOOD battery (2) Opposite end of positive cable to positive post of DEAD/LOW battery of disabled vehicle (3) One end of negative cable to negative post of GOOD battery (4) Opposite end of negative cable to GROUND on disabled vehicle (a good ground is preferred over the negative post, however, the cable can also be hooked to the the battery post). To remove the jumper cables after starting, reverse the order (4,3,2,1)


How do you recharge your battery with another car?

You do not recharge your car battery with another car, when you connect the batteries together to get your car started, it is called jumping it, and only partially gets the battery working again. It should not be attempted if you do not know what you are doing because it can be dangerous.


Why eveready batteries logo contain cat jumping on number 9?

The Eveready logo (cat and number 9) was to liken the reliability and longevity of the Eveready battery to the "9 lives" attributed to cats.


What is wrong when your 1993 Mazda MVP just clicks after you turn the ignition on?

sounds like your batteries dead, if you tried jumping it off with no luck, make sure the battery terminals are connected good


Which color, red or black, should be connected first when jumping a car battery?

When jumping a car battery, the red positive cable should be connected first.


Can jumping a car battery cause a fire?

yes


When jumping a car why do you have to put the negative cable on ground?

You connect the negative cable last and connect it to ground rather than to the negative post of the battery because there may be a small spark when you make the connection. Batteries can emit a slight amount of highly explosive hydrogen gas. That spark on the negative post can cause these fumes to ignite and explode. That is why you always connect the negative cable last and always connect it to ground and not to the battery itself as a safety measure.


Is it the battery on an Oldsmobile Delta 88 if the AC was on then the car starts stalling then the battery was dead so jumping the car it starts then it stalls again?

What happens when the a/c is off, now. your alternator is bad or a bad/poor connection in the batt-alt-gnd circits. woody