How to disassemble the battery of the electrical screwdriver Sturm. What types of batteries amazed

Replacement of batteries in an electric screwdriver. types of battery, determination of a malfunction, restoration, repair, replacement

Sooner or later, the battery block of an electric screwdriver produces its resource. However, the price of the new battery is almost comparable with the cost of the device itself, and therefore the only inexpensive alternative is the replacement of batteries in an electric screwdriver. We will analyze which types of power batteries are and what are their features, how to quickly determine the malfunction, which recovery methods are available and how to perform repair or replace individual blocks if necessary.

To restore the battery, it is necessary to use power batteries, which are similar to the parameters installed at the factory source of YTIMG.com

Varieties of the battery for electric screwdriver

Almost all modern models of electrical screwdriver have the same battery block device. elements consistently connected to a single chain. Form, dimensions and denominations always the same. In total, they create the final voltage of the device. The difference between them is observed only in the container. This thoroughly allows you to easily stick and replace such batteries.

As a rule, 3 main varieties of batteries are used:

The face value of each block is 1.2 volts. Their main advantages are expressed as follows:

• Accessibility in view of prevalence and low price.
• Resistance to the negative value of environmental temperature.
• Preservation of characteristics during storage in a discharged state.

Disadvantages are manifested in small capacity, as well as such a number of factors as:

In addition, due to the toxicity of the production cycle, manufacturers of the 3rd world countries produce this type of battery, which in itself can manifest in factory marriage and low quality.

The batteries of this modification supply voltage of 1.2 V. Many people prefer them as an alternative to failed blocks when it is necessary to repair the battery for an electric screwdriver. This is explained primarily by high quality, since the production fishing line for a trimmer does not provide environmental pollution, and therefore well.known manufacturers are widely used in developed countries.

In addition, they are distinguished by the following merits:

• The minimum memory effect.
• Low self.discharge coefficient.
• Higher capacity. in comparison with the above variety.
• The maximum operating range of cycles “Charging-discharge”.

The disadvantages are manifested in high cost, the impossibility of exploitation at low temperatures and the deterioration of characteristics during prolonged storage in a discharged form.

The batteries of this variety give out a face value of 3.6 in. The main advantages are manifested as follows:

• Big container.
• A few times larger range of working cycles. compared to other modifications.
• Lack of memory effect.
• Minor self.discharge.
• The possibility of reducing the weight of the battery block. due to the need to use smaller cans in the chain due to their greater potential and capacity.

The disadvantages are expressed by the maximum price and limited expiration date. After 3 years, the batteries are lost most of the container due to the chemical decay of the filler.

note! The main reason for the breakdown of the screwdriver is precisely the failure of the battery, or rather, the loss of the face value or the capacity of its individual elements. The failure of the thermistor, the disconnection of contacts and other reasons are extremely rare.

Replacing elements in the battery of a screwdriver with your own hands

Hello! I bring to your attention a review with step.by.step instructions for replacing elements in the battery of a screwdriver. The review has a few text, a little more than the photo material, as well as the answer to the question: “What is the capacity of Chinese batteries for 2500 mA/h/h?””.

Zayatreys, please go I have such an inexpensive screwdriver Roteri RCD-14.4, which has been serving for several years, but over time the battery charge began to grab less and less. The search for a suitable battery in stores did not lead to anything. Therefore, it was decided to order battery elements and replace them on your own. Having dismantled the battery, the review was the following: the battery consists of 12 SC Ni-CD elements. It was decided, ordered, received: to verify the performance of all elements, as well as to control the capacity, the La Crosse RS-700 charger was used, which I have already done here. According to the dimensions, these batteries cannot be regularly installed in a charger, therefore, to provide contact with the device, the AA type batteries with island at one end were used, and wires were soldered to the surveyed battery elements: the charger itself was transferred to the test mode, and so 3 times 3 times 3 times. this is what came of this: so, out of 12 batteries 3 turned out to be faulty (a real capacity of about 100 mA/h), the rest had a capacity in the range from 900mas to 1,500 mA/h, not 2500 mA/h in any way. This is the answer to the question asked in “Topics”. I had to write the seller a complaint, in response the seller suggested sending 4 of the same batteries for free. I agreed. The package has reached. This time, all 4 batteries turned out to be efficient to similar to other capacity. We proceed to the replacement of the elements: to pour the petals used the flux LTI-120, ordinary rosin was not tuned. It is better to solder on the “minus” side of the battery, t.to. The battery case is a “minus” and if there is a violation of insulation at the ration, then it will not lead to anything. At the end, the entire battery was tightly fixed with tape and installed in the case: checking the work of the screwdriver showed that 600 was spent not in vain!

Allow me to leave it, and yes, I ask you not to skimp to press the “review”, t.to. This is an incentive for writing new reviews 🙂

What batteries are in screwdrivers

Nickel-cadmium, nickel-metallhydrid or lithium-ion batteries of batteries can be installed in screwdrivers. As a rule, in more modern models, lithium-ion batteries are installed.

These batteries are the best option for use in screwdrivers for a combination of characteristics:

But along with the advantages there are significant disadvantages. significant temperature restrictions. Operation is impossible at low temperatures, since the battery is rapidly discharged, there is a threat of self.flaming or explosion with a sharp blow or with a strong heating.

Differences between nickel-cadmievs and lithium-ion batteries:

• have a smaller container;
• greater weight;
• They are not so afraid of frost;
• Upon reaching the deadline, the electrolyte dries;
• There is a “memory effect”. The battery capacity may decrease sharply as a result of improper operation, when the not completely discharged battery is placed on charging.

Nickel-metallhydride compared to lithium-ion batteries have:

At the end of the service life, accumulators of this type of recovery are not subject to recovery.

In principle, the device itself does not depend on the type of batteries. The difference will be only in their quantity, since the voltage of one lithium-ion element is from 3.6 to 3.8 V. The voltage of one nickel-cadmium battery element is from 1.2 to 1.4 V.

In addition to the batteries in the battery housing, a protection and control scheme is installed, temperature sensor and contact unit sensor.

What tools do we need

When restoring batteries of batteries for electric screwdriver, you will need:

At the factory to connect contacts with minimal heating, point welding is used. Therefore, when soldering, high speed is required so as not to spoil the battery element.

Breakage in the mechanical part. how to eliminate

The malfunctions in the mechanical part of the tool is easier to detect than in the electrical component. This is due to the fact that any mechanical defects are heard. The main signs of mechanical malfunctions of the devices under consideration include:

• The emergence of extraneous sounds
• Vibration and the battle of the clamping cartridge
• The operation of the engine engine is heard, but the cartridge does not rotate

To fix the device, and eliminate mechanical malfunctions, you will need, first of all, to disassemble the case. Knowing the device of an electric screwdriver, it will not be difficult to eliminate the breakdown in the mechanical part. If extraneous sounds arise, which indicates the reason for the wear of bushings and bearings of the anchor of the motor, then these elements must be replaced. With wear of the bearing and bushings, they need to replace them, but first you need to buy these details. When buying, difficulties may arise, since it is almost impossible to find spare parts for obsolete tool models.

It is interesting! Before putting a new bearing, it should be well treated with lubricants, for example, lutol-24 or solidol, and even better with special lubricants.

In addition to the failure of the bearing, a gearbox may break on an electric screwdriver. A number of malfunctions of this device include:

• Reducer shaft is twisted from the effects of large loads
• The working surfaces of the gear wear out
• A pin is broken off on which satellites are attached
• The bearing or supporting gearbox wears out

Most often, it is the gearbox that comes out of the system, or rather, its components. toothed wheels. The reasons for the failure of the gearbox are:

• Incorrect operation of the tool
• Strong loads for which the device is not designed
• Lack of lubrication
• The material from which the devices are manufactured

If the electrical screwdriver of the “old hardening”, that is, its gearbox consists of steel gears (instead of plastic), then it is advisable to repair it than to buy a new. To do this, the device needs to be disassembled, an inspection and find the cause of the malfunction. When repairing the gearbox, it is necessary to clean the mechanism and parts from outdated lubricant, and apply new lubricants. If there are damaged gears, then they need to be replaced. Do not rush to dispose of faulty gear wheels, as you need to buy exactly such details (take them as a template).

It is interesting! If plastic gears are installed on the tool, then changing them to steel is not recommended. The reason is that plastic gears are broken under the influence of large loads, which protects the engine from combustion. If metal gears are installed on the device from the plant, this suggests that the engine has a large power supply.

So that with independent repair of the mechanical part of the screwdrivers, no unnecessary questions arise, below there is a table that indicates the main signs of mechanical malfunctions, as well as ways to eliminate them.

Breakage in the electric part. how to identify and eliminate

The drill and electric screwdriver have much in common, but the difference lies in the torque. If the drill is designed to drill holes in different materials, then the main purpose of the electric screwdriver is the screwing of self.tapping screws. If there is a speed controller, this tool can be used to drill and polish surfaces. It can also be used to mix solutions (only if small volumes). Cases of malfunction of the electrical part, which are manifested by the following factors: are not rare:

• When you press the Start button, the tool does not show signs of life
• When switching reverse. this option does not work
• The speeds are not adjusted

To deal with such breakdowns, you need to first find out what reasons contribute to such malfunctions.

Types of batteries

By constructive features, batteries in the form of sliders and clips are distinguished.

Screwdriver battery in the form of a slider

But these are insignificant differences compared to the types of batteries. Both a slider and a clip is used in different types of batteries.

There are three types of batteries for a screwdriver:

Lithium-polymer batteries (Li-Pol) are not produced for screwdrivers. The main areas of their application: smartphones, cell phones, tablets, laptops, radio.controlled devices, electric cars.

Nickel. cadmium batteries are the cheapest, quickly charge, have more than a thousand chargers. Batteries are resistant to operation at low temperatures. But they have a memory effect. That is, they can only be charged after complete discharge, otherwise the capacity will fall. They have a high current of self.discharge. They are made of toxic materials and it is difficult to dispose of them. These batteries are in greater demand.

Nickel. metric of batteries are more expensive, not toxic, have a low memory effect. The current of self.discharge is more nickel. cadmium. The capacity is higher, the charge cycle is more than five hundred. These batteries tolerate high discharge worse. They are less suitable for maximum use of the tool power. They need to be constantly recharge.

Lithium. ion batteries are more expensive, more powerful, quickly charged. They have no memory effect. Low current of self.discharge. The voltage of the battery elements is greater, so their number is less. Therefore, the dimensions and weight of such batteries are less than the Nickel. But they cannot be completely discharged, otherwise after several such cycles you will have to buy a new. To improve the quality of lithium. ion batteries, manufacturers install a microcircuit in the battery or screwdriver that controls the battery. A multi.level multi.stage protection is formed:

• From high temperature.
• From a complete discharge. These batteries are afraid of a complete category and cannot recover if the category is below the permissible norm.
• From a short circuit.
• From a reloading, as an explosion may occur.
• From overload currents.

The control board installed in the battery housing is more effective. Когда аккумулятор лежит отдельно от шуруповёрта и не используется, микросхема контролирует его состояние и в случае каких-то проблем размыкает цепь. The battery is fully protected.

Overview of the lithium-ion battery with a microcircuit

Stock up and start repairing.

We disassemble the battery.

Parse the battery carefully. Do not use strength so as not to damage the body.

• Remove the battery from the screwdriver. If the buttons are jammed and it is not removed, unscrew the screws of the tool body and remove the upper half. One of the buttons was freed. Pull the battery over, slightly moving it in different directions, and it will also be removed. When you analyze the battery, install the buttons so that they easily press in your grooves.
• The battery body consists of two parts and is collapsible and non.vegetable. In the first case, unscrew all the screws and disconnect both parts.

Disassembly of a battery using a knife

Inside are located several sequentially soldered elements. Such a cassette provides the required voltage and current characteristics for the battery. In some nickel batteries, a temperature sensor is attached to the elements.

Nickel battery thermal sensor is attached to the elements

In lithium. ion batteries is more complicated. There is a controlling fee, and the elements are dressed in a protective case or film.

How to increase battery capacity.

The new battery must be completely charged before use. The average ambient temperature is from 10 to 40 degrees. There are indication lights on charges. When they show that the battery is charged, you must immediately turn off the process.

• New Nickel. Cadmium batteries must be rocked before the first use. Completely discharge and charge three times. The capacity will become maximum. If in the instructions to the device it says that the buildup should include a larger number of charge cycles, then follow these recommendations. In the process of work before charging, completely discharge the battery.
• Nickel. Metaldrid batteries have a smaller memory effect, so they can be swooped once before the first use.
• Lithium. ion batteries do not need to swing. They are simply easy to charge until full power.

For the discharge of the battery, a load in the form of a lamp with a voltage of 12 volts is used. It is connected by crocodiles to terminals. If the battery is disassembled, then to the conclusions of the consistent circuit of the nutrition elements. The process of discharge will take less than an hour.

The second method of proper discharge is the use of a “smart” charger type IMAX B6, which is very convenient to rock batteries. In it you can configure current and voltage parameters for the charge and discharge of the battery. Set the automatic cycling mode to build a battery. That is, you do not need to constantly monitor the capacity and stress. The device will do it for you. Up to 5 cycles are provided. over, at the end you can see the values ​​of current and voltage after each cycle and analyze the result.

Diagnostics.

After full charging, disassemble the battery. Inspect the elements for swelling and oxidation. Multimeter or tester measure the voltage of all elements. Voltage limits for different batteries:

Battery jars are wrapped in a paper shell. The voltage is applied to each element. If all cans in the voltage value are normal, discharge the battery into half the power. Turn the tension again. Those elements in which the voltage decreased by 0.5. 0.7 volts compared to the average are subject to restoration or replacement. They say “flowing” about such banks.

Why is not charging.

If the charger is normal, check the contacts between the battery and the charger. At the charger, the contacts could straighten up. Because of this, the battery does not charge. Disassemble the device and bother the terminals. The second reason may be out of order or soldered temperature sensor. It must be soldered or replaced with a new.

Quickly charges and discharges.

When oxidation and contamination of the battery contacts, charger and the battery tool, the battery is quickly charged and discharged. Wipe the contacts periodically.

A boiling electrolyte.

The boiling of the electrolyte occurs due to an accelerated charge and reloading. If the elements do not swell and after a full charge show the operating voltage, they can be restored without replacement. It is necessary to make up for the empty volume of distilled water.

• After determining defective cans, cut the connecting metal tape. Saving elements.
• Take a punch with a thickness of no more than 1 millimeter. Where the can has a minus, make a hole in the case.
• Pump out air up to 1 cubic centimeter and pour the same amount of water.
• Epoxy resin seal the elements and connect them to the circuit.

If this method has not helped, then replace the banks with new.

Replacing and soldering nutrition elements.

When you diagnosed and identified defective banks, you need to purchase their replacement. New elements must fully coincide in size and technical characteristics.

• Cut or solder the old elements from the plates.
• Put in their place new. For connection, use the same plates or copper conductors of the same section.
• So that the banks do not overheat the soldering do quickly. Observe the polarity of the consistent chain. Connect plus with minus, and minus with plus.

How an electric screwdriver works?

What problems can be fixed in a home environment? How to recognize one or another breakdown? To give specific answers to the questions asked, let’s first deal with the internal mechanism of the tool. The main protruding element is the power button. Used to start the device and to change speed, direction of revolutions of the working part. cartridge.

Tires are tuning through an electronic device based on a transistor. The speed speed is directly proportional to the power of pressing the button. The launch of the reverse occurs by replacing the polarity of the electric current on the terminals. Traditionally, electric screwdriver is equipped with single.phase collector.type engines that function from continuous current. The engine includes a case, magnets, anchor and brushes.

Rotation from the motor goes to the gearbox. Then he converts high engine speed into low cycles on the shaft, a cartridge with active bats is fixed in it. The gearbox can be used classic as on a regular drill, including planetary. Recently, the classic gearbox has almost not been used, so we will not stop and let’s go further. The planetary mechanism includes:

Then follows the stabilizer of the effort with sixteen positions. These positions give a specific voltage to self.tapping screws in order not to spoil the material with which they are attached. The last component is the cartridge.

How to make out a screwdriver in a general form

We will analyze the disassembly, an example will serve as an electric screwdriver of Makita:

• We remove the block-box where the battery is located.
• We remove the screws that combine the two halves of the case, with a cross.shaped screwdriver.
• We take out everything that is contained inside the tool body.
• Disconnect the reverse button.
• We dismantle the speed switch.
• Disconnect the engine and gearbox.

Methodology for determining the malfunction of the battery of an electric screwdriver

If you disassemble the battery body of an electric screwdriver, then inside you can detect sequentially connected nutrients. In most situations, the operating voltage of the electric motor is 18 volts, which are consisting of 15 can batteries in the battery housing. As a rule, some external signs of breakdown are not detected. Therefore, the master is faced with the task of correctly determining the link in the existing chain, which has lost its energy intensity.

The performance of the entire battery will lose its effectiveness even in that situation, if the system has at least one element that has lost its capacity. However, all the nutrient elements cannot fail. Therefore, having correctly discovered ineffective elements, they can either be replaced or returned to the operability of used batteries. In other words, there are methods to revive the nutrition elements.

As a rule, in order to accurately determine the battery malfunction, the practical application has found two main methods:

• Identification of faulty blocks when using a tester (multimeter);
• Identification of faulty supplying elements in the system using the load

Consider how these methods work in practice.

Fast a battery check using a multimeter

Since the nutrition elements have a sequential connection diagram, it is important to know that when the batteries are in a loaded state, their voltage tested by the multimeter should be identical. To properly determine the faulty link, you should switch the tester to the mode of direct current changes, and measure each battery (banks) in the system.

If in your case the NI CD batteries are used, then the rated voltage of each of the blocks should be approximately 1.2 V. In a situation of using LI-Ion batteries, the voltage indicator should be in the region of 3.6 V.

In general, for the correct initialization of the malfunction, the entire battery block is first subjected to maximum charging for 6 hours. Then the corresponding measurement is made by the multimeter, based on the above indications for different types of batteries. If there are no distortions at this stage, then the battery is connected to the load in order to completely discharge.

After making sure that the battery block was discharged, it is necessary to measure again with a multimeter of each supply battery in the system. This will make it possible to detect unusable “banks” with a high degree of probability. The multimeter readings in such blocks will be below 0.5-0.7 V. If you have the availability of battery blocks for replacement, then the resuscitation of the entire scheme is eliminated by banal voltage, extracting the surviving elements with their replacement with new.

Features of the types of batteries

AKB is the most important detail in an electric screwdriver. If the tool has become poorly working, then one of the reasons is the failure of the batteries. The new battery block costs a little less than the electric screwdriver itself. And you need to make a serious choice. buy a new block or a new tool. Not cheap pleasure.

But, if a person created it, then a person can repair. The main thing is that the head works, and the hands have the right source. With your own hands, you can make batteries repair, which after that will work for more than one year.

Batteries consist of several elements. They are very similar to ordinary batteries, but can be charged. The number of charge cycles determines the main price of elements. By type of material, battery elements are divided into:

In the list they are located in the frequency of use. Nickel-Cadmium elements (Ni-CD) are most common in screwdrivers of different brands. This is due to the comparative cheapness. But they have a low given voltage and the number of charge cycles. the discharge is also low. The voltage on one such battery is about 1.2 century. If a screwdriver requires 12 V for work, then the battery should consist of at least 12 such elements.

They are stored for a long time in an unlawful state and are not afraid of temperatures. But the level of self.discharge makes the battery often, which is the reason for the failure. The ecology of the production of such batteries is not acceptable in every country in the world, but maybe that’s why they are cheaper.

Lithium. ion (Li. Ion) batteries have the best indicators. The voltage on a separate copy reaches 3.6th century. High charge capacity. Four pieces are enough to work the tool. This is very pleasing to the hands, because the tool needs to be transferred and holding in your hands at any height. The number of charge cycles is high, but the price is also not low. But the battery has no “memory” to the level of charge. And the self.discharge is small. In a word, everything is fine except the price.

Nickel. Metal. Hydrid (Ni. MH) Batteries have almost all the disadvantages of previous brands. With the quality of nickel. cadmium elements, their price is equal to the cost of lithium. ionic. Application in practice is very low where there are low temperatures. Low temperatures disable the entire battery at once.

You can repair the battery of batteries with your own hands, but this does not mean that one element can be repaired. One element can be tried to restore, and if the restoration does not help, then you just need to replace it. You can replace all the elements of the battery. This is the best option to buy new elements and make a replacement. But this is not always fast, but the tool is needed now.

Determination of a malfunction

The battery malfunction can be hidden in any one element or in several. Everything is rarely out of order. This gives hope for the possibility of fixing the tool. To find a faulty element, any multimeter is required, which must be in the workshop and a car light with a capacity of about 20 watts.

We charge the battery of the time, then load it on the light bulb. While the light is glowing. the device select those batteries on which the voltage will be the lowest. Most likely, they are the reason for the failure. For a more accurate diagnosis, these elements must be dropped out of the battery.

The battery is soldered, or rather welded using connecting plates by point welding. It is necessary to carefully tear off the plates with other suitable tools with lips or other suitable tools.

On disconnected elements, we check with an ammeter of the same multimeter, a direct circuit current. Just clip “” and “-” probes of the device. The current on a faulty battery will be noticeably less than on the rest.

What is the crime of such a phenomenon? The fact is that the “bad” element does not allow others to normally charge others. It becomes a kind of resistance on the path of current, and the whole battery becomes unlucky to the desired value. After some time, due to the constant low level of charge, it will fail.

How to repair a battery of an electric screwdriver at home: step.by.step instructions for replacing batteries

How to restore the battery to the screwdriver. In order to carry out high.quality and correct repairs, you need to take care of buying tools for work, as well as comply with all the recommended instructions.

To carry out the repair, you must perform simple steps, which will be considered in detail below:

• carry out the disassembly of the battery;
• find a faulty cell;
• choose the right element for the replacement of the old;
• carry out soldering work;
• after the end of the process, check the battery for performance.

A set of tools necessary for work

In the course of work, a soldering device will be required. It is best to use spot welding, which can be done on your own at home. It is necessary to carry out soldering quickly and efficiently so as not to spoil the battery.

A set of necessary tools to restore the screwdriver of the screwdriver at home:

• ordinary cross.shaped or combined screwdriver;
• measuring tool. multimeter;
• tin;
• specialized flux;
• a soldering apparatus that is capable of issuing more than 100 watts. As already mentioned, it is better to buy ready.made spot welding or make it at home.

How to disassemble the battery of an electric screwdriver

The power of the screwdrivers is divided into two varieties: collapsible and indispensable. If a person has the first type, then disassemble the case is not difficult. But manufacturers make the second option so that no one can disassemble the case, and as a result of this you need to buy a new device. In this case, the disassembly of the device will inevitably lead to damage to the case.

The elements themselves can be combined using latches or small screws. Also, these elements can be glued, in this case it will be necessary to disconnect them with a sharp knife. You need to move the knife along the click between the batteries and insert any thin small objects. After the work is carried out, it is necessary to seal all the elements back.

Determination of faulty cells

As already mentioned, after the case is opened, the batteries can be detected, which are interconnected. To restore the power source, first you need to determine which one is faulty.

Testing should be carried out carefully, so several batteries can be faulty. In no case should you carry out long shares, as this will overheat the battery and disable it. Most sensitive are lithium-ion power sources. You can purchase the right soldering device in a store of equipment or in construction sales, as well as order through online stores.

Nickel-cadmium power sources dry over time, or rather, the electrolyte from the chemical composition disappears. Some “people’s craftsmen” recommend making a hole in the battery and pour distilled liquid there. This method is dangerous, it can harm not only the battery itself, but also the person who performs this procedure. If nothing is scary and I want to do something useless, then you can try.

To identify the malfunction of the entire battery, you will need to diagnose each element separately. You need a voltage parameter that they give out. To make the measurements as accurate as possible, you need to perform the procedure with a fully charged battery. It is required to extract all the batteries from the housing and conduct testing using a multimeter. To make it more convenient to compare the issued voltage, it is necessary to draw a simple circuit.

Multimeter set measurement mode. The issued voltage should not exceed 1.4 volts for cadmium elements. For ionic voltage parameter should be no more than 3.8 volts and not less than 3.6 volts. Further, you will need to completely discharge the battery using an additional load in the form of a light bulb, and the other device. Further, the discharged battery is again disassembled and the issued voltage is tested. Lithium power sources should be replaced if the difference is more than 2.5 volts. Cadmium types are replaced with a difference of 0.5 volts and more.

Selection of elements for replacement

The selection of elements can be carried out by several methods. The first option, calculate the broken battery, find out its model, technical characteristics and parameters. You can also find the type of batteries used on the manufacturer’s website. Buy it and install it for the same place, follow the polarity.

The second selection option will be a marking that is located on batteries. Usually it is indicated in the form of numbers and letters. You can find out the desired element using the technical documentation that comes with a screwdriver. Similar, and better the same types of batteries should be selected. Energy capacity and voltage should converge. Otherwise, the battery will quickly lose its effectiveness.

How to solder banks to a battery

With proper experience of working with the soldering iron, Saving is not difficult to solder on their own.

• First of all, a faulty battery is unhooked. When replacing is made, you need to monitor polarity;
• Further batteries are soldered among themselves. The amount of work time should be as small as possible to prevent overheating;
• After soldering work, it is required to collect all the batteries using tape and install them back in the case;
• Test a restored battery.

Battery check after repair

After the work of the work, it is required to check. To do this, install the device for charging for a long time. Next, after charging, let the device lay down a little. About a day. Discharge occurs in the usual way. Shurovyrt must fulfill its functions. After that it will become clear whether the problem is solved or not.

DIY battery repairs for electric screwdriver: General advice and recommendations

The most important recommendation is if the battery has failed, it is better to purchase a new one and not to suffer. It is possible to restore not all varieties of power sources. Many are not amenable to any repair.

It is also necessary to repair a person who has at least a small idea of ​​how batteries are arranged, screwdrivers and other tools.

After the start of the repair process, you need to take care of your own safety.