Every car enthusiast should have a car in his arsenal. Operation of a vehicle without of this device can become significantly more complicated. A car charger may be most useful in the winter, when the battery has to be charged much more often. When the battery is completely discharged, you will have to “light up” the car, which is not always convenient, and in some cases may require additional expenses due to a visit to a service station. Much easier to charge battery at home. One of the most popular brands of car chargers is “Kedr” - devices of this brand are purchased by many vehicle owners.
Model range of chargers: "Kedr-M"
The Kedr-Auto charger is intended for recharging car batteries. Such equipment is mainly used to restore the functionality of batteries that have lost it due to sulfation reactions and oxidation of the electrodes. In addition, you can also increase the service life using the Kedr-Auto Mini charger by training the charge-discharge cycle.
Device functions
- Automatically stops battery charging.
- Cyclic charge-discharge operating mode, the action of which is aimed at restoring the battery capacity as a result of the sulfation reaction of the plates.
- Protection system against short circuits and incorrectly connected terminals.
- The provided recharging mode allows you to reach the full capacity of the battery.
Preparing for work
On the back of the charger there is a special compartment in which cords with clips and a network cable are hidden.
The voltage of the Kedr-Auto 4A charger can harm human health or cause death. The device must be turned off before starting restoration and repair work and changing the fuse. Installing homemade fuses and blocking the ventilation holes of the case is strictly prohibited. In addition, do not charge the battery near heating devices.
Before starting work, remove the cords with terminals from the rear compartment of the device. The first lever of the device is switched to charge mode, the second – to cyclic or continuous mode.
How to use Kedr-Auto 4A?
Continuous mode is used when the battery needs to be fully charged.
The cyclic mode is used when molding or desulfating electrodes. IN this mode A 6-watt, 12-volt light bulb is connected to the terminals.
Then the terminals are connected to the current terminals, observing polarity.
Charger“Kedr” has a protection mode against incorrect connection and short circuits. The instructions for the Kedr-Auto 4A charger indicate that its operation is only possible if a battery with a minimum voltage of 10 volts is connected to the terminals. If you try to restore the charge of a completely discharged battery, the device will switch on protective mode.
Switching operating modes can be carried out without disconnecting the charger from the network. According to reviews on Kedr-Auto, the current strength at the beginning of the charging process is 4 A, followed by a gradual decrease. The charger automatically turns off after the battery is fully charged, which is indicated by a special LED. After this, you can put the charger into recharging mode.
Charging the battery in cyclic mode lasts 45 seconds, after which a special light turns on. This mode does not have automatic shutdown, so it is advisable to control the entire process.
"Kedr-Auto 4A" and "Kedr-Auto 12B"
Both models are used for battery recovery, charging and charge-discharge training cycles.
On the back wall of the devices there are power wires and connections to the battery. There is no special compartment for placing wires in these models. The instructions for the Kedr-Auto 4A and Kedr-Auto 12V chargers describe in detail the operating rules and procedure for use.
The Kedr-Auto 12V charger has the following technical characteristics:
- The nominal value of the batteries charged using the device is 12 V.
- Supply voltage - 220 V.
- Maximum power consumption - 85 A.
- Current strength - up to 4 A.
Charger "Kedr-Auto 10"
This model is an improved version of the previous charger - “Kedr-Auto 4A”, which was created in 2008. The device is used to charge a 12-volt battery.
Distinctive features of Kedr-Auto 10
- Improved protection against short circuits, overloads and incorrect terminal connections.
- Using only high-quality and modern components.
- Pre-start mode, in which the battery is charged with a current of 10 amperes. After this, the charger automatically switches to the battery charging mode with a current of 4 amperes.
- The main charging stage is replaced by a recharging mode with a current of 0.5 amperes. This mode allows you to avoid overcharging and restore the battery to full charge.
- can be produced in a cycle.
- The rated current in automatic charging mode is 4 A.
- Light weight of the charger - only 600 grams.
- Manufacturer's warranty - 1 year.
- If you follow the instructions for the Kedr-Auto 4A and Kedr-Auto 10 chargers, the service life is 5 years.
Main characteristics of Kedr-Auto 10
- Relatively small dimensions - 185 x 130 x 90 millimeters.
- Pre-start mode, the current in which is 10 amperes.
- Rated current is 4 amperes.
- The power consumption of the device is 250 Watt.
- The charger allows for a maximum rating of 12 volts.
- The charger operates from a standard 220 V network.
The battery charging time varies depending on its capacity and degree of discharge. The microprocessor built into the charger controls charging and pre-start mode. All modes are turned on and the device is activated after the device is switched to automatic mode. First, an increased charging current is supplied, after which its strength is reduced to the nominal value, which allows you to significantly speed up the battery charging process.
Operation process of "Kedr-Auto 4A"
The instructions for the Kedr-Auto 4A charger describe in detail the process of using the device and charging the battery. It is impossible to disable the memory, since the protection system protects it from damage even if the terminals were initially connected incorrectly.
Auto mode
Restoring a full battery charge is carried out as follows:
- The charger terminals are connected with correct polarity.
- The “Automatic” charging mode is turned on.
- The plug is connected to the 220 V network.
- The charging process will be interrupted by the device automatically after reaching the maximum charge level, which will be notified by the blinking indicator.
Cyclic mode
In the cycle, the battery is charged to full capacity as follows:
- A 12-volt car light bulb is connected to the battery terminals. It is advisable to select a light bulb with a power of 6 watts.
- The terminals are connected with correct polarity.
- The corresponding button starts the “Cycle” mode. In this mode, the charge indicator lights up constantly.
- The charger is connected to the power supply. This mode does not imply automatic shutdown; accordingly, the discharge and charge cycle can be repeated endlessly. For this reason, the user must independently monitor the battery charge.
Before the actual process of charging the battery, the plugs are removed from the cans. After completion of charging or restoration, the terminals are disconnected only after the charger is disconnected from the 220 V network.
ZU "Kedr": user reviews
Most reviews left for Kedr chargers are positive. The most popular model of the device is “Kedr-Auto 4A”. Somewhat less often you can find reviews of the Kedr-Auto 10 model.
Among the advantages of the charger, car enthusiasts include simplicity and ease of operation, the low price of “Kedr-Auto” (about 1500-2500 rubles) and a long service life. Users often note that the charger can last ten years or more without any complaints. For many users, one of the main benefits is the cycling mode, as it allows you to desulfate and bring old batteries back to life. Car enthusiasts often note that with the help of this mode it was possible to restore the functionality of batteries that had been completely discharged for a long time. Of course, it is impossible to completely restore the battery capacity, but a positive effect can be achieved.
However, you may encounter negative reviews. Some owners of Kedr-Auto chargers note that in automatic mode The battery is not charging. If the battery capacity exceeds 60 Ah, then charging it takes a very long time due to the 4 ampere limit. The same batteries, the capacity of which exceeds 70 Ah, are not fully charged. Users also noted that Kedr-Auto chargers do not charge batteries whose charge has dropped below 10 volts.
Despite all the negative reviews and existing shortcomings, Kedr-Auto chargers are one of the best and most popular on the automotive market. The devices allow you to quickly charge batteries, have a long service life and wide functionality, and are significantly ahead of their competitors from other brands.
Possesses high degree protection against incorrect connection, overload and short circuit of terminals;
The model is equipped with the most modern transformers manufactured by a leading company Russian Federation;
There is a pre-start mode - afterburner mode (the battery is charged at a current of up to 10A), after which it automatically switches to nominal charging with a current of 5A;
After the battery is charged with a current of 4 A, the system will automatically switch the device to recharging mode at a current of 0.5 A. This ensures that the battery is fully charged and does not allow overcharging;
It is possible to desulfate the battery in cyclic charging mode;
The warranty period is exactly one year from the date of sale;
In automatic charge mode, the rated current is 4 A;
With proper use and compliance with storage rules, the service life is at least five years;
The weight of the device does not exceed 0.6 kilograms.
Charging the battery and restoring its functionality, lost due to the formation of lead sulfates and oxidation of the electrodes.
Can be used to “train” the battery in order to increase its specifications and extend service life.
GENERAL INFORMATION
1. The Kedr-Auto charger is designed for charging 12-volt batteries. Charging time depends on the battery capacity and its level of discharge.
Important information for the car enthusiast who wants his battery to last a long time.
A common mistake made by car enthusiasts is that they start taking care of the battery when the car can no longer be started. It is known that in the urban driving cycle the starter is often used, and during short trips the generator does not have time to fully charge the battery.
Let's look at the chemistry of the process
When the battery discharges, a white coating of electrolyte deposits on the plates. This is a normal process (sulfation). And if you start charging the battery in a timely manner, it will be restored. But if we allow a deep discharge, the deposit crystallizes, and charging will not clean the battery plates, it will decrease sharply.
That is why it is necessary to recharge the battery almost daily. This means cleaning the plates and keeping the battery in perfect working condition, extending its uninterrupted service life for a long time. The Kedr-auto charger allows the car enthusiast to easily cope with this task.
2. The device provides an automatic transition to the low-current charging mode upon completion of charging in the “AUTOMATIC” mode.
3. The charger makes it possible to restore the battery (desulfation), for which the “CYCLE” mode is provided.
4. The Kedr-auto-10 device model provides a battery charging mode with an increased current of up to 10 A (pre-start mode). The pre-launch mode is provided thanks to the microprocessor that the Kedr AUTO 10 charger is equipped with. To activate it, you just need to press the “Automatic” button intended for this. After that automatic system the charger supplies increased current. This mode is indispensable in cases where you need to charge the battery as quickly as possible.
5. The device has light indicators corresponding to operating modes.
6. The device has reliable protection from overload, incorrect connection and short circuit of the battery cord terminals.
ATTENTION! If the battery is completely discharged, you must remove the battery terminals. After 30 min. connect the charger.
ATTENTION! The device only works in conjunction with a battery. The light bulb connected to the battery cord terminals will not light up.
BASIC TECHNICAL DATA
Rated supply voltage, V 170-240 Supply frequency, Hz 50-60 Rated voltage of the battery being charged, V 12 Rated charging current, A 5.0±1 Power consumption, W, no more than 250 Weight, kg 0.6 dimensions, mm 185x130x90 Pre-start charge mode, A 10.0* * only for the Kedr-auto-10 model.PRINCIPAL ELECTRICAL DIAGRAM Kedr AUTO 10
CLIMATIC OPERATING CONDITIONS Kedr AUTO 10
ATTENTION! The device is intended for indoor use.
Temperature environment, °С -10 +40 Relative air humidity, no more than 98% at 25°С Atmospheric pressure, kPa from 84 to 106
DELIVERY COMPLETES Kedr AUTO 10
1. Charger 1 pc. 2. Passport 1 pc. 3. Individual consumer packaging 1 pc.SAFETY REQUIREMENTS
ATTENTION! Before working with the Kedr-auto charger, you must carefully study these operating instructions.
Prohibited:- disassemble the device body and operate the charger with the top cover removed;
- operate the device if the power cord is damaged;
- operate in conditions of high humidity, as well as in aggressive environments;
- operate the charger near open flames or other sources of thermal radiation;
- operate the device with the ventilation openings closed. The battery charging process should be carried out in a well-ventilated area.
OPERATING PROCEDURE
All work to disconnect or connect the battery to the device must be carried out with the mains voltage turned off.
Before you start charging, you need to make sure that your battery needs recharging and is in good condition. To do this, you need to measure the voltage at the terminals. Maximum in winter permissible level discharge is no more than 25% of the nominal value, and in summer - no more than 50%. If the voltmeter shows lower values, then the battery needs charging.
1. Remove the device from the packaging container.
2. Connect the charger clamps to the battery terminals, observing polarity. At the same time, the “AUTOMATIC” indicator light comes on.
3. Connect the power cord plug to an AC mains voltage of 220 V.
4. You can verify that the charging process has begun using the dial current indicator, which should show a current of 5±1A.
5. Operating mode “AUTOMATIC”
When the device is plugged in, the device begins charging the battery automatically with a stabilized current of 5±1A. Upon completion of charging, the device automatically switches to low current charging mode - the charging current is reduced to a minimum value.
6. Pre-launch mode (only for the Kedr-auto-10 model)
The mode is activated by pressing the “AUTOMATIC” button again. The device begins to operate in pre-start charging mode with an increased current of up to 10 A for 5 minutes, after which it switches to automatic continuous charging mode.
7. Work in “CYCLE” mode
The “CYCLE” mode allows you to carry out the battery recovery process (desulfation).
If the battery is significantly sulfated, it is advisable to charge it in the “CYCLE” mode continuously for 3-5 days.
The desulfation process in the “CYCLE” mode will be more effective if it is carried out with a load with a current consumption of 0.5-1 A connected to the battery terminals, for example, a 6-12 W car light bulb.
Turns on by pressing the “CYCLE” button. In this mode, the charger will periodically turn on and off (45/15 seconds)
WARRANTY
The manufacturer guarantees proper operation of the charger for 12 months from the date of sale by the store. If the device fails during the warranty period, contact the organization that sold the device or the manufacturer.
Manufacturer's address:
Russia, 634061, Tomsk, st. Herzen, 52.
LLC "Research and Production Enterprise "Dunes"
Tel./fax: 8 (382-2) 43-21-27, 52-28-47
E-mail: [email protected], www.duny.ru
The service life of the product is 5 years from the date of manufacture, subject to the conditions of storage, transportation and operation. At the end of its service life, the device must be checked by the manufacturer.
Hello, friends! Continuing the automotive theme, today we will talk about the Kedr Auto 5 car charger.
Every car owner must have a charger at his disposal. From time to time, we all need to recharge our car battery. Therefore, sooner or later, the car owner is faced with the choice of purchasing one or another car charger. We want it to be inexpensive, compact, reliable, small-sized, and yet powerful enough. Kedr Auto 5 meets all these requirements.
Two years ago I already talked about a car charger that has proven itself with the best side. Today we will deal with internal device Charging Kedr Auto 5:
As you can see, there are not many controls located on the front panel. On the left side there is an ammeter, which can be used to monitor the strength of the charging current. WITH right side two buttons. Automatic button, and cycle button, with two LEDs. As you have already noticed, the device does not have a regulator responsible for regulating the charging current. On the one hand, this is an advantage, since you don’t need to rack your brains about what current should be set to charge the battery. Perhaps for some it will be just a godsend. But I prefer to have a regulator with which I can set the charging current that I need for a specific battery. From the name of the charger itself, it is clear that it can provide the battery with a current not exceeding 5 amperes, which in principle is sufficient to charge a conventional 55 ampere battery. But if you have a battery with a larger capacity, then this charge will not charge the battery much longer, since the charging current must be set to approximately one tenth of the battery capacity, so Kedr Auto 5 cannot produce more than 5 amperes:
This charging is carried out in Russia, in the city of Tomsk. This particular copy was produced in 2010, as evidenced by the sticker on the back of the device, as well as the stamp on the main board, but more on that later:
The power cords are located on the back of the device. Unlike the Orion PW325, the Kedr Auto 5 charger does not have a niche for laying wires and there is also no cooling fan, since the device is low-power. But the wires look better:
Let's see what's inside. Opening the lid, we see a lot of free space. Since the charger is built according to a transformer-free circuit, that is, it has pulse block nutrition. There are two boards inside, one is the charger itself, and the second, which is located on the front panel, is the board for selecting charging operating modes. The self-tapping screw that was used to fasten the cooling radiator to the semiconductor device immediately caught my eye. Although this cannot be called a radiator, it is just a piece of a metal plate, or rather it will be a heat sink. It’s strange that the factory didn’t have an M3 bolt, although it’s certainly easier to screw it on with a self-tapping screw:
On the ammeter we see a shunt, which is made of a piece of copper wire twisted into four rings:
Before we look at the device in more detail, let's turn to the circuit diagram of the Kedr Auto5 charger.
Kedr Auto 5 scheme
I copied the circuit itself directly from the charging itself, so there may be some inaccuracies. Although I checked it several times, I hope that I did not make any fatal mistakes. To make it easier to understand the components, I divided the entire circuit into two parts, one of which is the control board. Well, in fact, it is so. It is connected to the main board by three wires: red, black, yellow, they are labeled in the diagram:
Please note that the power supply constantly produces 14.9 volts at the output, and switching of all modes occurs using a field-effect transistor VT2, which in turn is controlled using a control board built on the ATTINY26L-85U chip:
The charger has only 2 modes. Using the automatic mode, the battery is charged to a voltage of 14.9 volts, and then the current sharply drops to a very small value and is maintained in this state indefinitely, while distilled water does not boil away from the battery. Using the second mode, the so-called “pre-charging” of the battery and the desulfation mode are organized. In this mode, the charging current is periodically turned on and then turned off at intervals of 45/15 seconds. In this case, the manufacturer recommends connecting a small 12 volt light bulb with a power of 6-12 watts to the battery terminals. You can learn more about the operation of the Kedr Auto 5 charger by downloading the instructions for use at the end of the article:
The LED located above its button indicates which mode is currently in use:
The control board is powered using a stabilized voltage, which is supplied through KR142EN5A:
The main board of the Kedr Auto 5 charger looks like this:
As you can see, in the upper right corner there is a stamp indicating the production date of 2010.
Since the board uses SMD mounting, the layout of the radio components is quite dense. Rectifier dual Schottky diode VD3, VD4 and power field-effect transistor VT1 are located on the heat sink. Switching transistor VT2 does not have a heat sink, since its internal resistance is low:
To maintain a constant voltage of 14.9 volts, a controlled zener diode TL431 and an optocoupler are used, with the help of which the low-voltage part is galvanically isolated from the high-voltage part of the charger:
Cedar auto 5 instructions for use
The charger in question has some features of its operation. First of all, I would like to draw your attention to the fact that this charger cannot charge a completely discharged battery. The fact is that if the voltage on the battery drops below 8 Volts, then the charger using the VT2 transistor cannot be connected to the battery. Therefore, you should remember this and avoid deep discharges of the battery. According to the manufacturer, this is not a malfunction of the device. Another inconvenience arises from this feature. The fact is that you cannot connect, say, a simple incandescent light bulb to a charger; it will not light up. That is, the device cannot be used as a power source, unlike the Orion PW325. To study the device in more detail, see the instructions:
As I mentioned above, the charger has some features. In the process of studying this device, I discovered that if the drain-source of transistor VT2 is short-circuited, the transistor opens and remains in open position. A voltage of 14.9 Volts appears on the plus and minus crocodiles of the charger. Who needs this, you can display a separate button without locking, and use this button to force the charger to turn on. Thus, it will be possible to charge a completely discharged battery, and it will also be possible to use the Kedr charger as a power source.
This is where I will conclude my review of the Kedr Auto 5 charger. I hope my story, and circuit diagram charger will help you with repairs. Bye everyone.
Thanks to scientific minds, the technology for producing various technical assistants for a comfortable life is constantly evolving. More and more new types of batteries are being produced that need constant recharging. And we are forced to purchase our own charger for each type of battery. To get out of this vicious circle, we advise you to pay your attention to the development of Russian scientists - charger "Kedr-auto-5".
This is the undisputed leader among chargers for 12-volt lead-acid batteries with an operating capacity of 14 and 190 ampere-hours. Another thing that helped instantly win over Russian consumers was that the Kedr-Avto-5 charger is very easy to use and significantly extends the life of your battery due to several different charging modes. The built-in microprocessor of the charger automatically selects the optimal charging option and reduces all power current fluctuations to a practical minimum.
The undeniable advantage of the Kedr-auto-5 charger is its completely silent operation, the small dimensions of the device and its light weight, as well as the fact that there is no gas or sparking during charging.
Unique technology of the Kedr-auto-5 charger
All of the above advantages of Cedar are possible thanks to the unique technology developed by Russian scientists. It allows you to achieve maximum performance and minimal deviation in current and voltage in charging. If, at the moment of replenishing energy in the battery, the mains voltage drops to 100 Volts, then charging will not stop - the Kedr charger will continue the process, and the output voltage will remain the same.
The entire charging process is fully controlled by a built-in microprocessor, which, at a constant current value, minimizes overheating of the battery, which significantly extends the battery life and does not harm on-board computer car.
There is another undeniable advantage for car enthusiasts - this is “smart” charging. Most chargers stop the charging process only when the power supply is disconnected or the battery is disconnected. After finishing charging, Cedar automatically switches to pre-charging mode. This way, you will always have a 100% charged battery, even during long-term storage.
Such wise brains of the device are enclosed in a body made of impact-resistant high-quality plastic. On Kedr-auto-5, all output contacts are carefully protected from polarity reversal and short circuit. The insulation resistance of the product is stated to be 4 kV. The weight of the product does not exceed 600 grams.
The compactness and lightness of the Kedr-auto-5 charger allows you to take it with you on a long journey or a family trip.
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