Review of chargers for car batteries of the Kedr series. Charger "Kedr": description, instructions Charger for car battery Kedr auto 10a

Comments (17):

If you put the zener diode at 8.5V, will there be anything wrong? Will this affect the operation and characteristics of the device in any way?

#2 root June 14 2017

Victor, here are the parameters of the KS175Zh, which is installed in the circuit:

Minimum stabilization voltage 7.1 V;
Rated stabilization voltage - 7.5 V;
Maximum stabilization voltage - 7.9 V;
Zener diode stabilization current is 4 mA.

As you can see, the zener diode has some variation in the stabilization voltage: 7.1-7.9 V. It is used in the circuit to power the K176 series logic chips.
Most likely, replacing the KS175Zh with a zener diode with a voltage of 8.5V will not affect the operation of the charger in any way.

#3 Vladimir January 19 2018

Why is the circuit like this, but the printed circuit board is from a different circuit?
I can't find the printed circuit board diagram shown.

#4 root January 19 2018

Vladimir, the printed circuit board (Fig. 10) was developed for a circuit manufactured in 1991 (Fig. 7), and it is slightly different from the original factory board (Fig. 9). We have not yet seen a printed circuit board drawing for the circuit in Figure 3.

#5 Evgeniy February 11, 2018

There is a printed circuit board in Sprint-Layout-6. If you want, I can post it.

#6 root February 11 2018

Evgeniy, thank you for sharing your development! Printed circuit board for Kedr-Avto-4A (SprintLayout 6) - Download

#7 Vladimir July 25 2018

Is there an alternative to KU202G?

#8 root July 26, 2018

Foreign analogs of KU202 are BT138, VT151 (12A) in TO-220 housing.

#9 Arthur October 28 2018

How to add a manual mode for cedar auto 4A so that you can force charge with a current of 6A?

#10 Alex January 08 2019

I received a KEDR AUTO 12V for repair, I don’t know the year. I won’t speak for all CEDARs, just using this example as an example. The printed circuit board and wiring diagram correspond to Fig. 10. Schematic diagram - fully consistent with Fig. 7. Scheme Fig. 3 contains obvious errors; the connection of the DD4 - K176TM2 microcircuit is shown incorrectly. There, even for the DD4.2 part, the pins of the microcircuit are numbered incorrectly. In my copy, it was this particular microcircuit that failed, so I had to figure it out. Since it is shown in the diagram in Fig. 3, the node on the DD4 chip cannot work correctly. It would be better to remove it.... diagram in Fig. 3.

#11 root January 09 2019

Alex, thank you for your comments. Errors corrected. We checked the numbering of the pins of all microcircuits in Figure 3 - for element DD4.2 they swapped 12 with 13 and 10 with 11.

#12 Geory February 03 2019

Hello everyone! They gave me a 12V cedar in a faulty condition, the problem is in the trance. TPP3-2-220-50k I didn’t find anything on the current network (consists of 1 primary 1-2, and two secondary 5-6, and 4-3, I really need the resistance of the primary and secondary and output voltages. Thanks in advance.

#13 Pavel February 04 2019

Hello, What do R5 and R9 regulate? How can I limit the voltage to 14.8 V?

#14 Dmitry February 06 2019

Good day everyone! One person has already asked about an alternative to KU 202g. I'm not very good with radio and electrical equipment. One of the thyristors has failed. In the store, when purchasing, the “master sellers” assured that KU 202g and Ku 202zh were interchangeable (at that time KU 202g was not on sale). Yes, of course, after installing the KU 202zh the device works, but the automatic shutdown does not work when the battery is already fully charged.
You have to constantly keep watch so that overcharging does not happen and the plates in the battery do not fall off.
Maybe there is still an alternative EXACTLY KU 202g?

#15 root February 06 2019

Thyristors KU202G and KU202Zh have the same characteristics with the exception of the “Constant voltage in closed state” parameter, where it is equal to 50V and 10V, respectively.

The circuit is low-voltage and this parameter may not be so critical here; perhaps some other parts have failed. You need to check whether all transistors and diodes are working properly, study the operation of the device and check the microcircuits.

There is a tuning resistor R5 “End of charge” installed on the board (diagram in Figure 7), perhaps it was turned without understanding and the device is not configured to turn off the charge when a certain voltage level is reached on the batteries.

#16 ALEX February 11 2019

Hello. The cedar unit stopped working due to a break in the diodes in the circuit of thyristor control electrodes.
Replaced diodes and thyristors. Charging took place only in cyclic mode. When the automatic mode was turned on, the LED turned off, the ammeter showed a current of 2 A and turned off after a couple of seconds. I moved the R5 a little, the charge took a little longer. The battery tester /40A/ showed the charger turned on at 13.4 and turned off at 14.4, everything would have been fine good, but there was no fixed shutdown. The device turns on with the specified parameters and turns off until you disconnect it from the network. Please advise how it should be. Thank you in advance.

#17 alex March 14 2019

charging occurs in a cyclic mode. those. The ammeter needle deviates by 1 A and then drops again to 0 A. and so on with a frequency of approximately 50-60 Hz.

What are the features of the Kedr Auto 10 memory?

The device was developed in 2008 at the Scientific and Production Enterprise "Dunes" LLC in the city of Tomsk, replacing its predecessor Kedr-Avto-4. It is intended for charging batteries based on acid electrolyte and lead plates (12 volt). In comparison with the previous model charger cedar auto 10 compares favorably:

Has a high degree of protection against incorrect connection, overload and short circuit of terminals;
The model is equipped with the most modern transformers manufactured by a leading enterprise in the 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.

Brief characteristics of the cedar auto 10 charger:

Pre-start charge mode – does not exceed 10 A;
Dimensions – 185X130X90 millimeters;
Power consumption – does not exceed 250W;
Nominal charge current 4 A;
The nominal voltage of the battery being charged is 12V;
The nominal supply voltage is 220 ±10% V;
Weight – does not exceed 0.6 kilograms.

The time it takes to fully charge a battery depends directly on how discharged the battery was before charging, and what capacity the battery has. The pre-launch mode is provided thanks to the microprocessor that the Cedar Auto 10 charger is equipped with. To activate it, you just need to press the “Automatic” button intended for this. The automatic charger system then supplies increased current. This mode is indispensable in cases where you need to charge the battery as quickly as possible.

Every car enthusiast should have a car in their arsenal. Operating a vehicle without 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. It is much easier to charge the 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.

The Kedr charger 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 significantly speeds 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 whose power is 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 the battery does not charge in automatic mode. 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.

Modern chargers are small in size and weight, and also have increased efficiency and durability. The Kedr Auto 10a charger belongs to the category of just such products. Due to the fact that this model is produced in our country, it is maximally adapted for operation in conditions of variable characteristics of electric current in the network.

Contents

Device overview

The Kedr Auto 10a charger consists of a rectangular plastic case, on the front panel of which there are indication and control elements. To monitor the level of charging current, the device is equipped with a mechanical ammeter.

There is also a built-in LED in the front panel of the device, which allows you to visually determine in which mode the charger is operating. To the right of the LED is a button that allows you to easily select the battery charging option.

On the opposite side, an electrical cable with a plug and output wires to the battery, at the ends of which there are spring clips, are connected to the charger.

Technical characteristics of the device Kedr Auto 10a

In order to ensure maximum efficiency when using the Kedr Auto 10a charger, you need to know the basic technical characteristics of such devices. The manufacturer's instructions for this device indicate the following parameters:

Characteristic	Meaning
Voltage	170-240 Volt
Pre-charge mode	10 Amps
Maximum charging current	10 Amps
Rated charging current	5 Amps
Charge voltage	15 Volt
Charging algorithm	Smooth reduction of current
Power consumption	up to 250 watts
Nominal battery voltage	12 Volt
Suitable for charging batteries	Lead-acid
Chargeable battery capacity	from 14 to 190 A/h
Ammeter	Switch
Dimensions	185x130x90 mm
Weight	600 grams

The territory of Russia is divided into 4 climatic zones, therefore, in addition to the basic technical characteristics, it is important to know under what environmental conditions the operation of the Kedr Auto charger is permitted.

If the car is charging in an open area in winter, then the minimum temperature below which operation of the charger is prohibited is minus 10 degrees Celsius. The maximum positive operating temperature of Kedr Auto 10a is +40º C.

Features of the device and for which battery it is intended

Using the Kedr Auto 10a charger, you can charge a 12-volt car battery. A feature of this model is the impossibility of setting the exact current value. The main vehicle charging cycle is an automatic process that is activated when the charger is connected to the battery and ends when the battery is fully charged. The maximum current at the battery terminals throughout the entire charging cycle is 5 A.

Given these features of the device, it can be assumed that charging large-capacity batteries will take too much time. To fully restore the battery charge, you will need to apply 10% to its terminals for 10 hours, so a battery with a capacity of 150 A/h cannot be charged even for 24 hours.

How to charge the battery using Kedr Auto 10a

You can charge the battery using Kedr Auto 10a in three modes: automatic, pre-start and cyclic. Each charge recovery option has its own characteristics, so to properly connect the device, you must perform several steps in succession.

In automatic mode

In automatic mode, the device’s operating algorithm completely eliminates the possibility of overcharging, which cannot but have a positive effect on the “health” of the battery. To correctly activate this mode, it is enough:

Connect the charger clamps to the battery terminals, observing polarity.
Plug the plug into an AC outlet.

Thus, 2 steps are enough for the device to start working in automatic mode. After the charging cycle is completed, the charger will reduce the supply of electric current to the minimum possible value, and for additional information about the completion of the process, the LED will begin to blink.

In pre-launch mode

In a situation where the battery is not completely discharged, but it is not possible to crank the crankshaft at a sufficient speed to start the engine, you can perform an express charge using this device. In order to activate the pre-start mode of the Kedr Auto 10a charger you must:

Connect the clamps to the battery terminals, observing polarity.
Connect the device to the network.
Press the mode switch button 2 times.

After activating the pre-start mode, the red indicator on the front panel will light continuously for 5 minutes, while the current at the battery terminals will increase to 10 A. This is usually enough to significantly restore the capacity of the car battery. At the end of the pre-start mode, the device will automatically switch to automatic operation.

In cycle mode

The Kedr Auto 10a charger has a cyclic charging mode, which allows you to restore batteries that have been subjected to deep discharges. As a rule, in this case, sulfates form on the surface of the plates, which interfere with the normal course of the chemical reaction during standard battery charging.

To activate the cyclic mode, you also need to connect the battery to the charger, as described above, but after turning on the automatic mode, immediately press the button located to the right of the ammeter. The activation of the device with intermittent switching on can be judged by the red LED turning on and off alternately.

Electrical circuit diagram

Download official instructions

PDF Operating instructions for the Kedr Auto 10 charger can be downloaded.

Do you have a charger? Kedr Auto 10a? Then tell us in the comments which one and your impressions of it, this will greatly help other car enthusiasts and make the material more complete and accurate.

Has a high degree of protection against incorrect connection, overload and short circuit of terminals;
The model is equipped with the most modern transformers manufactured by a leading enterprise in the 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 performance, lost due to the formation of lead sulfates and oxidation of the electrodes.
Can be used to “train” the battery in order to improve its technical characteristics and extend its 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 a 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. The automatic charger system then 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 against 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 Overall 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.

Ambient temperature, °C -10 +40 Relative air humidity, no more than 98% at 25°C 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. In winter, the maximum permissible discharge level 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.