May 10, 2021

What to do with a discharged battery — 8 ways to start the car

By admin

The main purpose of a car battery is, of course, to start the engine. It is also necessary to power the on-board electronics and electrics when the engine is turned off. To ensure a stable voltage in the network, a well-coordinated operation of the battery and generator is required. If they are damaged and other parts of the car are broken along with them, you should probably contact this company:

Causes of battery discharge
Every driver sooner or later has to face a situation with a discharged battery. Among the most common reasons for which there is a premature discharge of the car battery, include:

Absent-mindedness of the driver-it consists in the fact that the lighting, dimensions, interior lighting, music or other energy-consuming devices were not turned off for a long parking period.
Malfunction of the generator or its drive. The normal voltage that this device produces on the go is about 14 V. If it is less or more, this is evidence of a certain malfunction (belt breakage, burning of the diode bridge, triggering of brushes, etc.). A certain amount of tension must be applied to the belt, as its slippage causes a loss of power and a rapid discharge of the battery. The slack should not be more than 15 mm.
Unnecessarily high load in the on-board network. This situation is usually associated with the use of non-standard high-power devices (for example, an audio system with subwoofers). The same applies to additional lighting and energy-intensive lamps.
Current leaks in the on-board network. If the equipment and circuit are in good working order, then the leaks are insignificant and do not have a significant impact. However, it happens that the equipment is connected unprofessionally. Leaks can also be observed when the insulation of the wiring is broken and when the contacts are loose.
Undercharging of the battery occurs during short trips, as well as during long standing in traffic jams, because at idle speed, the recovery of capacity is very slow. On many generators, there is a setting of increased current output at revolutions of 1500 or more. And a large number of devices working simultaneously reduces the voltage that the battery receives.
Irregular battery maintenance. The driver should inspect the condition of the contacts and the quality of their attachment. The terminals must be clean and free from oxidation. For this procedure, it is enough to use a fine-grained sandpaper. The surface of the battery case must be dry and clean, free of oil stains.
How to understand that the battery has gone to zero
Many drivers are interested in the question of how to establish that the battery is completely “planted”. When the device is operational, it is capable of receiving and transmitting the currents for which it is designed according to its characteristics. The strength of the starting current corresponds to the capabilities of the starter. In addition, the battery must remain charged for a long time. If any of the functions are not performed, the battery can not be called serviceable.

The main signs of a “dead” car battery can be something like this:

I can’t start the engine in the morning, but the car was recently used;
the device gets too hot or cools down for a long time after charging;
the battery does not charge at all or loses its capacity very quickly;
change in the color of the electrolyte (for serviced products); the
appearance of an unpleasant smell, possibly burnt.

How to start the car if the battery is dead
There are many ways to start a car if the car battery is dead (discharged). However, not all of the methods described below are suitable for automatic transmission, and not all may be available at this moment. Most likely to have a car with front-wheel drive and manual transmission. So, what to do in a situation where the usual turn of the key in the ignition lock to revive the engine fails:

Lighting a cigarette from another car. In this case, the energy of a working battery from another vehicle is used. The second car pulls up close to the first, but you need to have a set of wires with “crocodiles”. A serviceable car must be turned off. The red wire is connected to the “plus” of the donor car, then to the positive terminal of the faulty car. The black wire is connected to the mass of the first car, and only then to the mass of the donor. You can start the engine, and then disconnect the wires, adhering strictly to the reverse sequence.

Another popular method is to launch from the pusher. To do this, you will have to attract another car, as well as a tow rope. But this method is only suitable for mechanical checkboxes. Both cars are connected by a cable. The engine starts in 3rd gear, after it is possible to accelerate to 20 km / h. By this analogy, you can start a dead car if it is dispersed by several people manually.

Use of the starter-charger. Some of these devices require a power supply, while others may be self-contained. It is enough to connect the wires with the battery terminals and turn on the ignition. The ROM starts by replacing the battery.

Quick start with a booster. At its core, this is a spare battery, which also needs to be charged. It will not help in all cases absolutely, although it produces a high current, but for a short time. The booster may not be enough for diesel units or with a large volume. The crocodiles throw it on the terminals and turn on the ignition, and then the starter.
Starting with the so-called “curve starter”. This is nothing more than a starting handle, which is often used by drivers of special equipment. To do this, there must be a hole in the bumper, into which one end of the handle is inserted. The other driver turns the crankshaft when the ignition is on. However, in modern cars, manufacturers have not provided for holes in the bumper for a long time, so this method is used only on older cars.

Fast charge start-up is suitable for vehicles with different transmissions. The essence of the method is to use a pair of single-core wires. Unlike the common cigarette lighter, there is no need for a donor car. This effect lasts for 10 minutes, and the charge will be just enough to start the engine. However, it will be possible to fully restore the battery capacity after a long ride at high speeds.

Launch using a sling. It will require a jack and a few meters of very strong rope, which is called a sling. We jack up any of the driving wheels and hang it out. We wind our rope on it, turn on the ignition and direct transmission. Abruptly pulling on the sling, we spin the drive wheel. After that, you need to quickly move the gearbox lever to the neutral position, so that the car does not stall from the lack of revs.

With alcohol. The most original and unconventional method, which only a few people have heard of. However, it can only be used for demountable, serviceable batteries. As alcohol, dry wine with a minimum sugar content is taken. In each of the battery blocks, you need to pour literally 30 mg. During the resulting reaction, the resistance will decrease and the voltage will increase. It is believed that after this there is a chance to start the engine, but the battery itself will no longer work.