Which Bulb Should Light When Charging a Screwdriver

How to charge the battery without a charger: tips, photos

How to charge the battery without a charger? This question often arises among motorists who actively operate a vehicle. After all, the power source can be discharged in a way where there is no access to the electric network.

Importance of a car battery

To maintain the starter, power unit and other mechanisms in working condition requires a rechargeable battery. If during starting the engine a few idle starts, then the charge runs out. The battery is used as a backup source, as well as for emergency starting. The availability of a power source also determines whether there will be problems with transport in winter, on the way.

How to identify a discharged car battery?

Determining if the battery is dead or not is easy. On new machines there are devices and sensors with which the degree of charge is monitored. On domestic cars there are no such indicators, so the owners are guided by such indicators:

  • The dashboard is almost or completely off.
  • When you connect the ignition, the sound changes dramatically.
  • Starting the motor is accompanied by clicks, extraneous sounds.

Watch the video how to charge akb from charging a screwdriver.

How to charge the power supply without additional devices?

How to charge a car battery without a charger? Is it possible? This option can be implemented, although some preparation is required.

In order to charge akb without a charging unit, you need some knowledge in electronics. For this, adjustments are made to the functioning of the relay regulator, the voltage indicator increases. But such actions are performed only by masters who are able to do everything correctly and accurately.

At home, the battery is reanimated by performing the following actions:

  1. Sources that consume electrical energy are turned off. Such devices include the speaker system, recorders and headlights, etc.
  2. At standard transport speeds, gear is reduced. As a result, the efficiency of the generator increases.

In the event that the electrical system is operating normally, the steps taken will allow the charge to be restored without charging. After these measures, fuel costs increase.

Before you follow the above recommendations, we test the main components and the electrical system. Particular attention is paid to the health of the generator.

If the battery is not charged, it is worthwhile to establish the reason. Typically, this is due to:

  • Damage to the belt, which is focused on the generator.
  • Violations of the voltage stabilizer.
  • Violation of the integrity of the brushes, their wear.
  • Poor generator belt tension.

Which Bulb Should Light When Charging a Screwdriver

Ways to charge the power source

If the question arises, how to charge the battery without a charger, then you can implement this in several ways.


A different power source is used to restore a dead car battery. This method is different in that with its help the battery is restored quite quickly.

To perform, wires are required that are equipped with clamps that have the required cross section. Do not use thin or damaged wires. After all, their integrity is easy to violate.

For lighting use wires that are equipped with a rubber braid. After all, plastic is destroyed at subzero temperatures.

For lighting cigarettes are suitable wires, the permissible current strength of which is 200-300 amperes. Wide clamps focus on them, which provide the appropriate contact.

When connected, focus on the shade of the wires. Red cables are connected to the positive terminal, only black wires to the negative terminal. All connections are made before the engine is started. Only after this the engine of the donor machine starts for 5-7 minutes.

This method allows you to reanimate the battery for a while. The car battery is fully charged from the mains.


Tow recovery is used if the vehicle is equipped with a manual gearbox. The battery should be slightly charged, since the method is to revitalize the generator.

For towing, you need a strong cable that can withstand heavy loads.

The method is implemented with vehicles or with the help of assistants. To restore the battery performed 1-2 races.

Recovery via a laptop charger

It is not always possible to take advantage of the options listed above. Therefore, drivers are wondering how to charge a car battery with laptop charging?

This will require certain items:

  • Wires that are equipped with copper cores.
  • Charging.
  • Resistor (use of a bulb is also allowed).

To prepare the power supply circuit from the charger, wires are removed for the minus, as well as the plus. The negative wire focuses on the outside, and the positive wire on the inside.

Connection is carried out as follows:

  • The minus wire is brought first to the negative terminal of the battery.
  • A resistor or a productive light bulb with established characteristics, indicators is introduced into the prepared gap. Actions are subject to rules.

Experts recommend introducing a resistor with the required characteristics into the circuit, since there will be no problems with changing the resistance.

Using this method, you can fully charge the battery. But the process is carefully monitored. The voltage is constantly checked at the terminals. As soon as 14 volts is displayed on the voltmeter, the procedure stops. The end of the process can be established by paying attention to the state of the electrolytic composition.

Mains charging

This method differs from the previous one in that the connection is made directly to the outlet. The adapter is not used in this case. To create resistance, use a lamp (220V). A diode bridge is also introduced into the circuit, with which an alternating current is rectified.

Connect the battery carefully. Be sure to comply with the rules and regulations. Before connecting, it is checked whether the circuit is prepared and assembled correctly. All elements that are part of it are tested. This is the only way to create an effective and functional circuit.

Since it is difficult to recharge a power source at high voltage, only experienced motorists or craftsmen can do this. Allowed contact with the elements that are part of the circuit when disconnected from the source or network.

For work, wires and cables are used, which are coated with an insulating layer. Do not use wires whose ends are bare.

The included lamp acts as an indicator. If only part of the glow is lit, then a part of the available amplitude is cut off with the help of a diode. If the lamp does not light when connected, the circuit is disassembled and reassembled.

Battery and winter

In winter, drivers often encounter a problem that is associated with a lack of torque. The main reason is the freezing of the electrolytic composition. This occurs due to the influence of negative temperature on the components of the electrolyte.

Modern vehicles are equipped with automatic start. Therefore, the engine starts and the machine warms up every 2-3 hours. But domestic equipment is not equipped with such devices, so you need to cope in other ways.

To start the motor requires energy, which is produced by the battery. In order to maintain its performance in winter, the power source is moved to a warm room. After removal, it is checked whether the device is charged. For this, the use of a volt unit is allowed. The performance of the power source depends on the state of the electrolyte. In serviced batteries, this is not difficult.

In winter, it takes 10-60 seconds to start. If necessary, the process is repeated. Masters do not advise doing this many times, as this will adversely affect the state of the battery. And even the charger will not allow to rectify the situation. The acquisition of a new power source is accompanied by significant investments. Therefore, it is better to keep the used car battery in excellent condition.

To start the car battery, cables are required that are equipped with clamps. With their help, a connection is made to power sources that are located in another vehicle vehicle. The lighting procedure is carried out carefully, as you have to contact with elements that are energized.

It can charge from the battery-donor battery for 2–4 minutes. This is enough to start the engine. Fully charge the car battery from the network or through portable equipment.

In order to prevent the likelihood of unpleasant situations on the road, you need to monitor the state of the car battery. With a certain periodicity, the state of the electrolytic composition, conductive terminals and the housing is checked. In winter, the power source moves to a warm place in order to prevent freezing of the electrolyte and the destruction of the housing.

Battery Charging Video

How to charge the battery without a charger, circuit

Hello to all motorists who are familiar with the situation when the car battery is dead and there is no charger at hand. It’s also not possible to have a light because it’s 3 a.m., and you need to urgently go. And for such special cases, I will show you all the possible methods of charging a car battery without a charger.

I want to warn you right away in some cases there are 220 volts life-threatening, so be careful and careful.

So the first way.

Everyone has a laptop, in the courtyard of the twenty-first century, nanotechnology and all that, so a laptop is an essential part of our life and if you have one, then there is also a power adapter for it, which usually produces 18-19 volts at the output. We will use it as a charger.

Next in the garage we find a 12-volt light bulb from 5 watts, say up to 50, the more powerful the lamp, the greater the charging current, but I do not advise raising the current more than 3.5-4 Amps, otherwise the laptop adapter may burn out from overload.

We collect everything according to the scheme, as you understand, the lamp is connected in series and simply limits the charge current.

I connected an ammeter to the circuit so that you can see the current flowing in the circuit.
It turned out charging in haste, perhaps this is the safest way, then everything will already be much more dangerous.

Method number two. Light bulb and diode

We take a simple bulb of 220 volts, power from 40 to 100 watts, as in the first embodiment, it will limit the charge current and the more powerful the lamp, the greater the current in the circuit.
We assemble a circuit from a light bulb and a diode, which are connected in series and then all this is connected to a 220 volt network.

There will be no explosions and even if there are any problems, the lamp will simply burn in full heat. Any diode with a current of 3 amperes, although the current will flow much less than the specified one, but it is better to have some margin. The diode voltage is at least 400 volts, and preferably 600 or 1000. For example, one of my favorite diodes IN5408 or something from the Soviet. Do not touch circuit nodes during operation; this is dangerous.

As the bulb previously noted, we limit the current, and the diode cuts the lower half-wave of the network sine, this is a simple half-wave rectifier, after the diode the voltage is already in the region of 110 volts, but when connected to the battery, the current will play the role of a kind of stabilizing element. The current in the circuit is again controlled by an ammeter.

Option number 3. Lamp and bridge.

Here everything is the same as in the previous version, only the diode is replaced with a full-fledged bridge, in other words, a half-wave rectifier. The output of such a bridge is already a constant voltage. A diode bridge, which is great for these purposes, can be found in an old non-working computer power supply.

Everything is clearly signed on it, where to connect what. And yet, this scheme is as dangerous as the previous one.

Option number 4. Capacitor and diode.

First, I’ll say that the diode can be replaced with a full-fledged bridge, this circuit is similar to the two previous options, but here the lamp is replaced with a non-polar capacitor, it limits the charge current.
A capacitor is definitely needed for a film for a voltage of at least 400 volts, and the charge current depends on its capacity, or rather, 1 microfarad capacitance provides a charge current of 70 to 100 mA.
But if there is no capacitor of large capacity, then several pieces of smaller capacity can be connected in parallel, taking into account the fact that the voltage of all capacitors must necessarily be the same.

We charge the battery without a charger

The battery in the car is designed to supply power to the starter. Therefore, the full operation of all vehicle systems depends on the battery charge. Do not allow the battery to fully discharge and charge the battery in a timely manner. In the absence of a special device that is designed to charge the battery in a domestic environment, sooner or later, each motorist will ask: how to charge the battery without a charger?

Since the matter is quite serious, it requires attention, strict adherence to instructions, we will consider the main methods used in force majeure situations.

How to start a car without charging in case of emergency

Faced with this problem in a “remote” place, do not get upset. To cope with the situation will help a regular charged battery, removed from:

  1. a lantern;
  2. Phone
  3. remote control, etc.

Having opened the hood, you should find the wiring going from the battery to the generator, which sends the necessary signal to the latter during the turn with the key. Having torn this wire, you should insert a battery instead, push the car, preferably from a hill, and, jumping on the go, turn the ignition key. After the car starts, the battery is removed with the engine running.

Wiring diagram starter vaz 2107: 1. generator; 2. rechargeable battery; 3. shunt coil of the stator winding; 4. starter; 5. serial stator winding coil; 6. holding winding of the traction relay; 7. retractor winding traction relay; 8. starter relay; 9. mounting block; 10. ignition switch

In some cases, it is enough to shake the battery well so that the liquids are evenly distributed in it. Remember that highlighting with an AL-KO or a match when you look inside the battery is extremely dangerous and threatens with sad consequences.

If you have a sufficient supply of time, in the absence of a specially designed device, you can independently assemble a primitive analogue of several components.

How to charge a car using a homemade charger

You can assemble a simple device for charging the battery from the following elements:

When constructing the circuit, keep in mind that the bulb will burn half power, since the diode cuts off part of the amplitude of the transmitted alternating current. The absence of a light bulb may indicate that the circuit is not assembled correctly or that the battery is fully charged, which is very doubtful, because The voltage at the terminals is sufficient, but the current is small.

Charging the battery with an incandescent lamp

Do not use a lamp with a power of more than 200 watts. not only the semiconductor, but also the battery itself can burn from it. Remember, you can touch circuit elements with your bare hands only when the circuit is disconnected from the power supply, since all its parts are under high voltage.

It usually takes about 10 hours to charge. Do not forget to turn off the power at the end of the process, otherwise the battery may “boil”, which will cause it to malfunction. It will be useful for any motorist to have a device that checks the battery charge. It will help prevent spoilage and timely detect a drop in charge, which usually occurs in the most inappropriate cases.

Alternate Charger from Handy Materials

The second quite effective way to charge a dead battery is to create at home a household analogue specifically designed for this device.

The car as well as the acid battery in children’s cars can also be charged in the following way. You will need:

  1. car light (or from a motorcycle, moped) to 12V;
  2. 2-3 pieces of wire;
  3. Charging power supply from a laptop.

We plug in the power supply. The assembled and soldered wires with a light bulb are plugged into the socket, from which we supply the plus cable to the battery plus. From the minus of the socket, the wire goes to the minus of the light bulb, and from the plus of the light bulb the wire goes to the minus of the battery. If the circuit is correctly assembled and connected, the bulb should light up.

Video: Which Bulb Should Light When Charging a Screwdriver

Charging the battery with a light bulb and power supply

We leave the device turned on for half an hour. an hour. The battery may not fully charge, but at least for a baby car the charge is enough for normal use. For an adult car, it will be enough to start the car, and the battery can be charged from the generator already further.

Charging the battery in cold weather

If the battery is discharged in the cold, it can be restored to operability without using any devices. It is necessary to get the battery out of the car and bring it to a warm place so that it warms up.

Battery in the cold

This should be done carefully, not rushing to the extreme like pouring boiling water. This is quite dangerous and can completely disable the battery. The battery should warm up gradually and evenly.

Shaking the battery may also help in such cases. This fairly effective method helps to evenly distribute the fluids inside the battery. Follow the process carefully, without trying to look inside.

Is it possible to charge the battery without removing from the car and how to charge at home through a light bulb

Every car battery, whether serviced or unattended, needs to be recharged periodically. If the battery is charged, this will save the car owner from many problems associated with its operation. From this material you can learn how to charge a car’s battery at home, and what points to consider when doing this.

Best place to charge

To get started, we recommend that you familiarize yourself with the factors that determine the charge of a car battery:

  1. The charging process itself can be performed without removing the battery from the car, if you are the owner of a garage in which there are conditions for charging. This refers to the electricity and heating provided when it comes to charging in winter. For convenience, the battery can be removed.
  2. The room in which the task is carried out must be ventilated. It is warm, and the humidity is not elevated.
  3. There are no flammable objects or things near the charging point.

Before charging, the battery must be cleaned and dirt and oxidation removed from its terminals. It is better to use functional chargers that can control the parameters. Having familiarized yourself with the recommendations, you will have a logical question. is it possible to charge the battery at home (the author is the High-frequency Auto electric channel)?

Risks of charging the battery at home

Now we offer you to familiarize yourself with the possible risks of a battery charge at home.

What threatens battery charging in the apartment?

According to representatives of the healthcare sector, charging cannot be performed in a residential building. The electrolyte, the working substance, contains many harmful microorganisms that can get into the air when the battery is recharged when the liquid evaporates. Exposure to hydrogen chloride, arsine, and stibine will not bring benefits to the body, since their exposure will lead to poisoning and burns of the respiratory tract.

Substances can poison a person, but there is another dangerous nuance. When charging, you will have to unscrew the lids of the battery cans, and this can lead to the release of hydrogen into the air. When hydrogen mixes with oxygen, this will lead to the formation of an explosive field. As a result, a spark from a match or a lit cigarette can contribute to fire and explosion. In practice, this happens infrequently, but you need to take into account the nuance (author of the video channel Nick86 auto-building).

Secondary pollution is harmful to the body. After you have completed the charge, toxins in the air remain in the room. They settle on walls, furniture, household items and on the body. Subsequently, toxins can irritate the body for a long time, and not always general cleaning helps to solve the problem.

Car enthusiasts who don’t use cars in winter take their batteries home to prevent battery discharge and wear. Finding a battery in an apartment is safe, but you should not charge it in a living room, especially if children live.

Why can not I charge the battery in the house?

The reason is that harmful toxins come out of the battery when recharging. Signs of secondary pollution of the body appear even after a charge. We are talking about headaches, migraines, drowsiness, apathy, lethargy, the appearance of nausea and worsening well-being. These symptoms may appear on the same day you charged the battery.

over, it will be difficult to get rid of these signs, since the process itself is long and dangerous, while it does not always give the necessary result. Of course, you can clean the room and wash the furniture, but it is not known exactly where the toxins accumulated, this complicates the process. over, you will not be able to find out if you have saved your home from them or not. It is best to charge the battery in a well-ventilated garage with ventilation, in the summer. on the street. But if you don’t have other options, except at home, then before starting the process, put the battery in a ventilated room and open the windows to make a draft (video filmed by Rybak’s Diary channel).

Battery Charging Instructions

How to charge your battery yourself:

  1. First you need to remove the battery from the car, to do this, unscrew the nuts on the connected terminals and disconnect them, and then unscrew the nut of the bracket or bracket that secures the battery.
  2. After dismantling, check the housing for damage. In the presence of cracks, the battery cannot be used, since such damage contributes to the leakage of electrolyte. This battery must be disposed of. Also check the liquid level in the banks, since the electrolyte should be enough in the device, otherwise it will boil quickly and evaporate. If necessary, distillate can be added to the jars.
  3. Clean the terminals from oxidation and dirt, this will allow for more efficient connection and voltage supply to the terminals.
  4. Unscrew the covers located on the battery sections, but do not completely remove them. This will prevent swelling of the device in case of evaporation of the electrolyte.
  5. As we already said, it is not recommended to charge the battery at home, but if there are no other options, you will have to perform this task at home. You can charge your device using one of several methods. Connect the charger to the battery and set the voltage from 14 to 16 volts on it, only after that the charging device can be connected to the network. The value of the parameter should be about 10% of the total battery capacity.
    The current will decrease during recharging, and when the battery is fully charged, the pointer on the ammeter will drop to zero. If the battery has not been used for a long time, then you will need to completely discharge it, for example, through a light bulb, and then repeat the charging procedure again. To discharge the device using a light bulb, solder two wires to it, one of which connect to the minus, and the other to the plus.
  6. There is another way, it is completely the opposite. In this case, a constant current is used, without reduction, and only the voltage will change. The method is complicated in practice, since its implementation requires certain knowledge from the motorist. At the very beginning, on the device, you should set the current value, which corresponds to 10% of the total battery capacity.
    With this connection, the battery should be kept connected to the charging device until the voltage level on it reaches 14 volts. When this happens, the current parameter will need to be reduced by 50%, that is, twice, and then wait until the voltage rises to 15 V. Then, the current again needs to be reduced another two times. The procedure can be considered complete when the voltage in the battery will remain at the same level and not increase.
  7. Then you need to disconnect the charger from the network and disconnect its terminals from the battery terminals, then again check the volume of liquid in the banks and, if necessary, add electrolyte to the system.

Photo Gallery “Charging the Battery Properly”

Important Nuances

Before you begin the task, consider some of the nuances:

  1. The most optimal current option is 10% of the total capacity of the device. For example, if you use a 65 Ah battery, the current should not exceed 6.5 A.
  2. The normalized parameter when charging is considered to be a voltage of 110%. That is, if the maximum battery charge is 12.6 volts, then after recharging this value should increase to 13.86 volts.
  3. The battery must not be allowed to be charged with a higher current of 20 amperes or higher. This will lead to rapid wear of the device and its inoperability in the future.

Video “DIY Battery Recovery Procedure”

The video below shows the process of restoring the performance of a fully discharged battery (video published by transistor815).

How to charge a battery without a charger

Battery installed in the car

Battery purpose

The battery serves as a support for both the starter and other transport mechanisms. His work is observed while the starter cranks the engine. When several idle starts in a row occur in the process, the entire battery charge is empty. In addition, the battery acts as an additional power reserve in cases where the generator can not give the right amount of energy to all consumers on-board network. The battery circuit made by the manufacturers easily serves all parts of the car system, but there are times when the required amount of electricity is not enough even for the nominal values.

In emergency situations, the battery acts as an emergency power reserve. Everything happens when a generator or a relay-controller knocks out, a similar situation can be observed when the generator drive belt is broken. If the problem arose outside the city limits, then the battery will help to get out of the situation. In addition, stabilization of voltage drops is an important purpose of the battery. Jumps occur when the mains closes or vice versa. The impulsive state will certainly affect the performance of the semiconductor parts, in order to avoid rapid wear and tear, many drivers extinguish pulses with a battery.

Badly battered battery

How can I charge a dead battery?

Now let’s figure out how to charge a battery without a charger? It is difficult and unsafe to charge a single vehicle system. Theoretically, this can be done by changing the operation of the relay regulator by raising the voltage level. Before analyzing the following methods of charging a battery without a charger, it is worth remembering that any unauthorized interference with the car’s mechanism can lead to unpleasant consequences. When you see that the battery requires recharging, then:

  1. Try to disconnect all unnecessary energy consumers.
  2. Continue driving at the desired speed, but with reduced gear. This will create a large fuel consumption, but generator current output intensity will increase. This option is allowed to be used as a short-term phenomenon.

If there is no power leak in the on-board network, then the recommendations will have a noticeable effect. When it was not possible to carry out diagnostics, before using the tips, check the tension of the alternator drive belt and the absence of slipping on the pulley. Another situation, if your car was parked or in the garage for a long time, and when you started to start it, the case was unsuccessful. It is likely that in the cold, the battery lost its charge. If the car is constantly in operation, but after a night break the charge is exhausted, then the reason lies in the leakage of energy from the electrical circuit.

Battery voltage measurement in the event of a breakdown

Charging without a charger. diagnostics

Before you charge a car battery without a charger, you should do a small inspection of the car. This will help confirm the cause of the empty battery. The test should begin with the dashboard sensors. If a faint light is visible, the battery is almost empty. The sound of the engine factory is also changing. It will become slow and long. In addition, characteristic clicks will be heard from the hood. Those who have a voltmeter on the dashboard can easily determine when to start putting the battery on charge. In addition, today most batteries contain built-in indicators showing the charge of the device.

Charge the car battery in the cold

When the battery has lost its charge in the cold, you can restore its performance without the butt of the device. Remove the battery from the car and transfer it to a warm room for heating. Do this carefully and do not get fooled by extreme measures like warming with boiling water. This is not safe and may result in unexpected costs. Another simple option is shaking the device, which is necessary so that the liquid in the battery is evenly distributed. Maneuver carefully and do not try to look inside.

That’s what happens with a battery in the cold

Charging methods without charger

Light a car. All motorists know that you can charge the battery from another battery. This is a proven and reliable method that breathes life into an empty battery without extra effort. Several wires are required, with a cross-sectional area of ​​each of them equal to 10 mm2. Apply thin and damaged wires is not worth it, as they will burn. Use only rubber-braided wire. In frosty weather, plastic will not stand. In length, the conductor should reach more than a meter.

Take wires with a permissible current of 200 amperes or more, because an increase in power gives a good result. Wire fasteners should be well soldered and the clamps wide. So you increase the contact area and easily fix the conductor. In addition, it is important to know the condition of the engine of the donor machine. If during the check you find an electrolyte leak, it will not work to charge the battery from this vehicle. Do not waste time and give the risk of damage to another car. Please note that the battery should be charged strictly according to the type of battery. It is forbidden to light a 12 volt device from a 24-volt battery.

Interestingly, in the opposite sequence, the circuit does not work. If the driver has a 24-volt battery, then it can be charged using a circuit of two 12-volt batteries connected in series. It is necessary to monitor the polarity during connection and make sure that the wires are not taut.

Correctly “light up” a car

Based on standard markup, it’s clear that red wire is a plus, black is a minus. To start producing a charge, you should turn off the donor machine, then start connecting the wires. Start by connecting the minus of the donor and ending with the minus of your car. When a spark occurs when connecting the last terminal. this is normal. It should be connected to the mass of a metal part that interacts with the body. After all the terminals are in place. start the donor car for a couple of minutes. At the end of two minutes. envy another car. It is necessary that she work for five minutes. Disconnect all wires, but do not turn off the engine, let it recharge the battery for another half hour. While the car is running, do not include additional energy consumers.. audio system and light, etc. After the battery has picked up the charge and started the engine, the charger should be charged normally at home.

Tug start. It is notable for motorists with Manual transmission. It requires that the battery has a little charge. In theory, it should be enough to run, because the whole method is built on the awakening of the generator. We attach a tow rope to another car. When the transport gets the right speed, you need to turn on the ignition and stick the forward gear. This method can be applied without a second machine. If you have assistants, you just need to push the car. When the engine starts, you do not need to turn it off, otherwise you will have to push it again. Better make a couple of races on the highway. this will return the battery to normal.

Starting the battery with a push

We charge the battery at home without a charger

When the battery is discharged, and there is no way to charge with a charger, we use alternative options from available means:

Option one. We take out the battery and charge from the laptop. We do not connect directly, as circuit protection will work. To reduce the feed force, we insert two lamps from the machine in parallel into the circuit. The battery should charge approximately six hours after the voltage on the stamps reaches 14 volts is not worth charging. It is simple to calculate whether the power to the charger is enough: the current in the circuit is multiplied by the voltage of the unit. For example, 20 volts 4.5 amperes = 90 watts. When the power consumption is greatly overestimated, then the current in the circuit should be reduced by disconnecting one lamp.

Second option. We make a circuit from a light bulb, a diode and a battery. To work we take a lamp with a nichrome thread with a power of 60 to 200 watts. The lamp power only affects the charge rate. The diode can be taken both imported and domestic. It is required to convert alternating voltage to direct. See that the diode is a normal size, this primarily indicates its power. The work does not need high power, but it is better that there is a margin. Great are the diodes from the receivers and power supplies. Next, the wires with terminals and plug are connected to the outlet.

Remember that all work is done under high voltage at your own risk. You can touch circuit elements only when it is disconnected from the network. Wires should be insulated and not have bare ends. When setting up the circuit, it should be taken into account that the lamp acts as an indicator. It should burn at half heat, this indicates that the diode cuts off only one part of the amplitude of the alternating current. When there is no light in the lamp, it means that the circuit is not built correctly. Do not take the lamp over 200 watts, as the semiconductor or the battery itself will burn from it. The best option for a battery with a current of 1/10 of the capacity, i.e. 75Ah is charged with a current of 7.5A, or 90 A.h with a current of 9 Amps. Charging time runs from 6 to 8 hours.

The lamp checks the battery charge

When assembling the circuit, very it is important to consider the polarity of the semiconductor, if the diode gives electricity in one direction, then the arrow on the markings looks at the plus. Current manufacturers are moving away from standards, so of course it is better not to guess, but to read the documentation for the selected diode. To recognize the polarity at the battery terminals we take a tester. In DC mode, upon successful connection, the tester provides 99 volts. When connected incorrectly. 99 volts. Note that you do not need to charge more than 10 hours. the battery will boil. Before removing the battery, unplug the circuit from the outlet.

Finally, we note that each time you do not need to experiment with the battery charge, you need to purchase a device to check the battery charge. The device will allow you to see the battery charge reduction in time and prevent it from fully landing.

Interesting topic:

How to charge a car battery at home without a charger?

How to charge a car battery at home without a charger?

If we talk about batteries, it is certainly better to charge it with a specialized device, try asking your neighbors if you don’t have one. But if it so happened that there are no chargers either, then you can, for example, take advantage of charging from a laptop. The advantage of charging is that it is protected against various kinds of short circuits. You will also need a halogen bulb, and how to do it technically watch the video:

If you don’t have a charger with you and the battery suddenly runs out, then usually quot; from another car and it is very widely used in life.

This requires a cable that has a high voltage and must have special terminal clamps.

And the terminals are pushed from the working machine, to the one that has a low battery, only in this case you do not need to forget about the polarity. And thus the battery is charged.

There are craftsmen who have experience charging using an adapter from a laptop, but there are a lot of nuances here. And the charge will be very long, and secondly, such an adapter can burn and not withstand the load.

The easiest way. Find a screwdriver. Most of them have an internal assembly of ordinary NiMH batteries with an operating voltage of 1.2 V. As a rule, there are 12 units in the assembly, so the assembly voltage is 14.4 V, the voltage on the screwdriver charger will be the same. Further, a technical matter: we determine where there is minus, where is plus, we connect wires to the terminals of the car battery and plug it into the network. You just need to take into account that the charger is so small there, so it will be charged for a very long time. several days.

If you wrote this question not from a tablet or smartphone, but from a stationary computer or laptop, then all you need is an additional 12 volt lamp and wires. How to charge a car battery with the help of them and the power supply from a computer or a laptop network adapter is easy to find on the network.

But I won’t give you specific links, since I don’t want to take responsibility if something doesn’t work out for you.

Although even in some kind of car TV show it was recently.

I charge with a dedicated charger. If you don’t have one, ask your neighbors, if you don’t live in the Siberian taiga, where to ask no one. Well them, these experiments.

You can just stay at home, warmed up. Your machine will probably start up later. But it’s better, however, to look for someone’s charger, almost every driver has one.

A constant voltage source of 13-15 volts ammeter, current regulator and hydrometer are required. It is necessary to start charging the battery with a current equal to 10% of its capacity. (if the ACC is 60AH, then the current is 6A). And sit constantly monitor the status of the battery. As soon as quot; starts boiling quotot ;, reduce current. And occasionally control the density of the electrolyte, bringing it to 1.28.

Charging a car battery at home: principles, rules, video

The starter battery is one of the most important elements of any modern car with an internal combustion engine. The ability to operate a car directly depends on its technical condition.

A car battery (battery) serves as an autonomous source of electrical power for all vehicle systems. A discharged or faulty battery makes it impossible to start the engine. If necessary, a car with a manual transmission can be started from a tugboat.

Interesting! The automatic gearbox of a modern car eliminates this possibility, and you can start the car engine only with the help of a starter.

Alarm systems with the function of automatic door opening without a charged battery will also not work. Given the importance of such an element as a car battery, each car owner must properly and carefully monitor its technical condition.

Principle of operation

The principle of operation of any car battery is based on the conversion of chemical reactions into electric current during a discharge, and recovery during a charge.

One of the main characteristics of a battery is the number of charge-discharge cycles it can withstand, i.e. how many times it can be charged and discharged while maintaining its performance.

In most cases, modern cars use batteries, the manufacture of which uses lead. The composition of the electrolyte includes sulfuric acid and distilled water.

Depending on how many and which elements make up the battery, batteries are divided into:

  1. Antimony.
  2. Antimony.
  3. Calcium
  4. Hybrid.
  5. Gel batteries.

Antimony batteries are currently practically not used and are an obsolete species. They were replaced by low antimony batteries, the plates of which include less than 5% of antimony.

In low-antimony batteries it was possible to reduce the intensity of electrolysis processes and to reduce the loss of water from the electrolyte. In calcium batteries, antimony is replaced by calcium, which virtually eliminates the boiling of water.

Such batteries also have a low level of self-discharge. Often, chemical silver is added to the plates of calcium batteries to reduce internal resistance and increase efficiency.

Interesting! In the production of plates for hybrid batteries, both antimony and calcium are used. This type of battery is an attempt to combine the properties of antimony and calcium batteries.

Since liquid electrolyte contains aggressive acid in the composition, in order to increase safety in gel batteries, it is transferred into a jelly-like state. Typically, to achieve this, silicon is added to the electrolyte.

This type of electrolyte can also reduce the shedding of the battery plates and eliminates the need for manufacturers to introduce additives in the production that increase their strength. According to the degree of serviceability, batteries are divided into:

  • served;
  • partially serviced;
  • >maintenance free.

Maintenance of a car battery is reduced to maintaining the required degree of charge and a set electrolyte level.

The electrolyte must completely cover the positive and negative plates of the battery and isolate them from contact with air. In serviced and partially serviced batteries, maintaining the required level is achieved only by adding distilled water.

The device is not serviced batteries allows you to maintain the required level of electrolyte throughout the life of the device and does not require human intervention. If the battery has a low charge, then regardless of the device, it must be charged.

Reasons for low battery

Battery capacity is its main technical characteristic, which is measured in ampere-hours (Ah). It shows how much charge the battery can deliver in a set period of time at a certain voltage.

If the battery is marked with the designation “47 Ah,” this means that it will give its full capacity within 47 hours when discharged with a current of 1 ampere. Like any electro-chemical device, a car battery has its own life.

Subject to operating rules, the service life of low antimonium batteries does not exceed three years. Calcium and hybrid batteries last twice as long, but also have a higher cost.

Due to the natural wear or sulfation of the plates, the area involved in chemical reactions is reduced, which leads to a decrease in capacity. The older the battery, the less capacity it will give.

In addition, a faulty generator may cause a discharge. Not receiving enough charge during operation, the battery may be excessively discharged while supplying the vehicle’s on-board power consumers.

In the end, you can discharge the battery by forgetting to turn off the headlights or parking lights of the car when parking. In all these cases, the battery must be recharged.

Preparing and charging the battery at home

For most motorists it is not difficult to properly charge a car battery. One has only to carefully read the instructions for use of the charger. However, it is necessary to take into account a number of features:

  1. Battery cells with liquid electrolyte require careful handling and care. When removing the car from the car and transporting the battery, make sure that the electrolyte does not spill through the plugs or necks of the battery. If this still happened, then the surface should be treated with a 10% solution of caustic soda. Ordinary baking soda is also great for this purpose.
  2. Charge the battery at home only in non-residential premises with good ventilation and lack of open flame. In the process of charging, heating and boiling of the electrolyte occurs with the formation of an oxygen-hydrogen mixture. Harmful vapors by inhalation can cause serious damage to health, and an open flame can cause an explosion.
  3. Before you charge a car battery, you should check it for proper operation. Often, the cause of a reduced return capacity may be a short circuit in one or more banks. If, when you turn on the battery for charging, signs of boiling electrolyte are visible in one of the cans, this may indicate a short circuit. If the battery quickly begins to heat up when the charging current is set, then this is often due to excessive sulfation of the plates.
  4. If during the check an insufficient level of electrolyte is detected, then turning the plugs in the serviced battery, Using a funnel, add disciplined water. The electrolyte is added to the battery only in the event that its loss occurred due to leakage from the cans.
  5. There are several ways you can charge your car battery at home. Charging depends on the type of charger used. When charging using the direct current method, the current strength is selected as 1/10 of the nominal battery capacity measured in ampere hours (Ah). So if a 47 Ah battery is being charged, then the charging current is set to 4.7A. Properly charged in this way, the battery holds charging perfectly, but the charging process must be constantly monitored. When using the constant voltage method, there is no need to control the process, however, the charging time will be somewhat longer. Manufacturers of auto accessories offer a huge selection of automatic devices for charging at home. Ultimately, to get the best result for charging batteries at home, you should use them. The automatic charger will not only ensure the maintenance of the required charging mode, but also turn off the device at the end of the process.

After completing charging at home, using a voltmeter or multimeter, it is worth checking the battery voltage. A fully charged battery should show 12.65V. If this indicator is lower, most likely there is a short circuit in the battery.

Important! After charging at home and installing the battery in the regular place of the machine, it is advisable to visit the service station and check the charging current from the generator.

Systematic overcharging is as fatal to a car battery as constant undercharging, and leads to premature battery failure.

For each machine, it is necessary to select the battery correctly, given its capacity indicated in ampere-hours (Ah). How many times you need to charge the battery at home, depends primarily on the operating conditions of the car and battery life.