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.Many of us have been there. It’s freezing outside and your battery won’t start. Regardless if you’re the person stuck or the Good Samaritan helping out, you’ll want to ensure that the jumpstart is being performed correctly.There’s a lot of modern engineering that goes into a vehicle’s electrical system. Alternators, batteries and lots of other pieces in between make sure your car starts the first try and keeps running. When everything’s working correctly these parts are hardly noticeable, but when something goes wrong their importance becomes much clearer.Generally speaking, jumpstarting with cables or a battery charger is a safe and easy way to quickly power up a dead battery. There are tons of stories of exploding batteries and damage happening to vehicles after an improper jump start, these are mostly false. That being said, there will always be a certain level of risk for vehicles, especially when cables are not used properly.For the most part, it doesn’t take a lot of mechanical know-how to jump start a battery.
The first step is to check the owner’s manual of both vehicles, you’ll want to make sure that neither vehicle has designation connection points other than the battery.Some vehicles have their batteries stored in strange places. For example, certain vehicles have batteries installed in the wheel well or the trunk. It’s uncommon, but it does happen. These vehicles would typically require the use of a junction block.Drivers of hybrid vehicles should generally avoid jump starting another vehicle.
![Can you use two cars to jump one Can you use two cars to jump one](/uploads/1/2/6/3/126316920/594812224.jpg)
Many hybrids have a 12-volt auxiliary battery, using it to jump start a vehicle may drain it to the point where the vehicle cannot start.Cables should be first connected to the donor vehicle’s battery and then to the dead battery. Positive should always be connected positive and negative should be connected to negative. Hooking the cables up the wrong way can produce some scary looking sparks and both batteries could be damaged.
Every time a driver turns the ignition key or presses the “Start” button, the starter motor is expected to crank the engine. This mechanism is caused by the 12-V flooded lead acid car battery, which is standard on virtually every vehicle on the road. Some cars carry a second battery, and trucks and RVs may carry a battery bank, linking several batteries. Similar batteries can be found in tractors, power equipment, motorcycles, powersports machines, snowmobiles, and solar power backup systems, to name a few. Tend to last for several years, but lifespan depends on how they are used. The typical car battery, driven every day, properly charged, and never deep-cycled, could last upwards of 7 years, but that’s a best-case scenario. Most maintenance-free (read: replace on death) car batteries tend to last 4 to 7 years.
Short car battery life, less than 3 or 4 years, can be related to several different problems, such as lack of use, corrosion, excessive deep cycling, electrolyte evaporation, damage, or charging problems. The are several things that can shorten the life of a car battery, and most of them are preventable. Now, we’re not talking about that “dead battery” that you get when the dome light was left on or the car hasn’t been driven in a month. Usually, a jump start, booster pack, or battery charger is all that’s necessary to revive the car battery and get the car back on the road, but the damage has already been done.
It’s the accumulation of damage that leads to the untimely death of the car battery, at which point it simply will not start the car. Car battery death, for the purposes of this article, refers to the battery’s inability to hold a charge, usually caused by sulfation. At its most basic, a car battery is constructed of alternating plates of dissimilar metals, usually lead and lead oxide (Pb and PbO 2), in an electrolyte bath, usually sulfuric acid (H 2SO 4) in water. When discharging, the “” facilitates the flow of electrons, from the Pb plate to the PbO 2 plate, generating an electric current, which can be used to start the engine or illuminate the headlights, for example. Because of this chemical reaction, both plates become more chemically-similar and converting fully-discharged car battery plates to lead sulfate (PbSO 4), wherein lies the problem.. So-called “soft” battery sulfation occurs practically every time you discharge the battery but, because it is usually immediately recharged, electron flow easily forces the opposite chemical reaction, resulting in dissimilar Pb and PbO 2 plates. If the car battery is left discharged for long periods of time, “hard” sulfation occurs, the formation of lead sulfate crystals.
As PbSO 4 crystals form, they gradually reduce the available surface area for chemical reaction, to charge and discharge the battery. Eventually, PbSO 4 crystal formation spreads, leading to cracks and short circuits within the battery, rendering it useless.
Unfortunately, it is impossible to reverse hard sulfation, but it does one good to note, regarding products and services claiming to reverse sulfation, there is no real proof to back up their claims. Still, if you have a, there are several things that you can try to get yourself back on the road, even if it’s straight to a repair shop or auto parts store for a new battery. Vehicles started using these methods should not be shut off until a new car battery can be obtained, and a couple of these methods will finish off the battery, anyway. Jumpstart: and a second battery, battery booster, or second vehicle might be enough to jumpstart the vehicle. The dead battery won’t accept a charge, though, so don’t shut the engine off! Note: Do not attempt to jump start a frozen battery, as it could explode. Thaw it out and attempt to charge it, first.
![Can a car battery be too dead to jump start Can a car battery be too dead to jump start](/uploads/1/2/6/3/126316920/833739587.jpg)
Distilled Water: If the electrolyte level is low, adding distilled water might be enough to fully-submerge the plates and enable a bit more reaction area. This might be enough to give the engine a few more turns.
Epsom Salt: Epsom salt (magnesium sulfate or MgSO 4) can readily be found in grocery stores, home gardening centers, and drug stores. Adding a stronger acid to the electrolyte mix, such as Epsom salt, might be enough to tip the chemical balance, delivering enough charge to start the engine. Dissolve 1 part MgSO 4 with 3 parts warm water, then add to each cell until the plates are covered by ¼” to ½” electrolyte. Aspirin: Imagine a vehicle out in the middle of nowhere, a remote camping trip, and all that’s available are a couple bottles of water and aspirin. Believe it, or not, Aspirin ( or C 9H 8O 4) can be used to chemically alter the electrolyte mix. Crush and dissolve 12 Aspirin tablets, 325-mg or 500-mg, in about 6 oz of warm water, and add equal amounts to each cell. Add additional water to make sure the plates are covered.
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