DIY smartphone battery repair

A wonderful thing is a smartphone. Without him, as without hands, as we used to live, even reluctant to remember. But this miracle of modern technology has a weak point - the battery. With active use, the charge melts before our eyes, and the battery life is not eternal, sooner or later the battery dies. There comes a time when it is necessary to purchase a new battery, moreover, preferably with increased power. But not everything is so simple in this world) Not for every device you can find not only increased power, but even a standard battery at an adequate price. For example, my case is a miracle of Taiwanese high technologies - a dual-SIM Android smartphone Gigabyte GSmart G1345.

G1345 with native battery

Since the old battery is completely dead and by lunchtime I already had to stick smart to charge wherever I have to, I decided to go all the way. I will say right away that I have already successfully carried out such manipulations on my old take out mobile several years ago, and that device is still plowing and holding a charge for weeks. In general, the essence. A modern battery consists of two parts - the battery itself and the electronic controller. We need to select a donor battery, from which we will take the battery and stick it to the controller from the old native smartphone battery. We select the donor based on the size, capacity and voltage of the native battery. Help you. I chose for myself a battery from Nintendo 3DS with a capacity of 2000mAh.

New battery with increased capacity

Further. We remove the outer shell from the new battery. This is usually nothing more than self-adhesive glossy paper. We tear off the controller from the new battery, the controller can be thrown into the trash, the battery is still to the side.

New battery without shell

Then we carefully pick out the controller from the native battery and solder a new battery to it. The Taiwanese glued the controller on their own battery too well and I tore it off by the roots, so carefully this moment, if anyone dares.

Separating the controller from the native battery

The batterystats.bin file has been deleted before charging the new mutant battery. The battery I integrated is a little thicker than the original one, the fractions of a millimeter stick out and it rests pretty hard on the lid, but everything is within the comfort limits. The battery is fixed in the smart with a porous packaging material of unknown origin and can be easily removed if necessary.

New battery with old controller

The charge went, with charging the voltage reached 4300mV, when the charging was turned off, it became 4119mV. After 18 hours of normal operation at a voltage of 3731mV, it shows 49% charge. Super, I'm happy)

I warn you that you carry out all the manipulations with your device at your own peril and risk and you can not even count on a guarantee in the event of damage to your smartphone. Good luck to all!

Date: 09/11/2015 // 0 Comments

Surely many have repeatedly asked themselves the question, is it possible to repair the phone battery? It is a pity to throw away the device, but it is no longer possible to use it due to a completely worn-out battery. The problem will be especially relevant for old budget phones, batteries for which have ceased to be produced a long time ago. Today we have an old man on our agenda Nokia 3310 and its deceased battery, which lasts no more than 10 minutes. Next, we will repair the phone battery with our own hands step by step. Go!

1. We remove the battery from the phone. In fact, we only need the case and the controller board, which is soldered into the battery, from the old battery.

1. Very carefully, with a blade, cut the body into two halves, at the place of the glued factory seam.We take out the filling: the power controller soldered to the old jar. We solder the controller and put it aside, it will still come in handy.

Attention!! It is important to remember the polarity of connecting the battery to the controller board.

1. We are preparing a new battery. The new battery should fit completely into the case and there should still be room for the old controller. To do this, cut off a part of the plastic top. If necessary, we also perform this operation from below.

Attention! The controller in a new battery is filled with plastic. It needs to be cut off and unsoldered from the battery terminals.

Attention!! It is important not to damage the new battery bank when scalping.

1. We solder the old controller to the new bank.

Attention! Observe the polarity. Perhaps additional insulation of the controller from the battery case is necessary, we use a strip of electrical tape.

We check if there is tension at the outer sites.

1. We install it all in the old case from the battery. At this stage, you can already insert all this into the phone and check its performance.

1. If everything is working correctly, the final step will be gluing the battery covers. For the best effect, we clamp the battery between the plates in a vice and leave the glue to dry for several hours.

1. After such manipulations, we inspect the controller contacts on the battery itself, if necessary, wash them a little with alcohol and turn on the phone.

A similar repair of cell phone batteries can be done on other models. For battery repair Nokia BLC-2 the new ones are great BL-5C with any letter at the end. For other models, it is necessary to select a new battery in terms of size, voltage and capacity. The voltage in almost all batteries is 3.7V, and the capacity is no longer such a critical parameter, just the larger it is, the longer the phone will live on one charge.

The lithium-ion batteries that are installed in every cell phone are very high-capacity power supplies. They serve quite a long time, but sooner or later you have to deal with the fact that the battery runs out. This is especially true for those who spend a lot of time on the Internet. The battery runs out quickly even if its owner is a passionate gamer. There are plenty of factors contributing to the discharge of the mobile phone battery. And it is not always possible to replace the battery with a new one. In this regard, the question arises of how to restore the phone battery and whether it can be repaired so that it lasts longer. Fortunately, there are several ways to revive your battery that you can always use.

It is possible to restore a lithium-ion battery, which stopped giving out voltage due to a deep discharge, using the "Chinese clone" of the popular Aimax B6 charger and a multimeter. This charger is commercially available and is excellent for recharging the battery at home.

First you need to check the battery itself by connecting a multimeter to it and setting the device to the voltage measurement mode. If the battery has a deep discharge, the multimeter will reflect this with the minimum U readings in millivolts.

The bottom line is often that the controller "interferes" with measuring the real amount of voltage in the battery. There are two pins, plus and minus, that go directly from the battery to the controller. The terminals usually have a voltage of about 2.6 V. Of course, for lithium batteries this is very small. But in order for the controller to start up and start producing voltage, you need to charge the battery to at least 3.2 V ... Then the controller will begin to "understand" the battery and reflect the real voltage readings.

We ground the negative wire, connect the red wire to the power supply. There is no need to set high current. The "Aimax" device is convenient in that it has several charging modes designed for a particular type of battery.In the charger, we set the appropriate mode (lithium-ion or lithium-polymer batteries). We set the voltage to 3.7 V for one can, and the charge current is 1 A - this will be enough.

The tension gradually starts to rise. This means that the recovery is successful. After some time, it will reach 3.2 volts, and the battery will "swing". After that, it can be placed in a phone or tablet, or recharged using the "native" charger.

After a while, we check the controller to see if it shows voltage. If it does, we try to disconnect the phone battery from the charger. If the voltage stays the same (about 3.5V), that's very good. The battery will now be perceived by the tablet or phone.

Of course, before reviving the battery, it will need to be disassembled, and the battery will partly lose its beautiful appearance, but this is not so important. Once restored, it should be carefully inserted back into the phone, and now it will work for a while, depending on how much of the capacity is retained in the revived battery.

There is an even easier way to restore the phone battery, for the sake of which you do not need to purchase a specialized charger, but you can use what is at hand.

To do this, you will need:

• power supply from 5 to 12 V (you can use the "charger" from the phone);
• resistor device rated at least 330 ohms, maximum 1 kohm.

The wiring diagram is very simple: the "minus" of the charger is fed to the "minus" of the storage battery, and the "plus" is output by means of a resistor to the "plus" of the battery. Then power is applied and the voltage across the battery starts to rise. It will be enough to raise its level to 3 V, as when charging with aimax. It will take a little time for it to reach this level, only 10-15 minutes. Then you can use the battery normally.

• fan;
• 12 volt power supply.

Any power supply is suitable for this purpose. The main thing is that its output voltage should not be lower than 12 V. We connect the “minus” connector of the power supply to the “minus” of the fan, and the “plus” connector to its “plus” and fix it manually on the battery in this way. When we plug in the device, the fan starts to work. This means that current is already flowing into the battery.

You do not need to hold the battery for a long time: 30 seconds will be enough to raise the voltage. Usually, after such a "repair", the U indicator rises to 3 V, which once again provides a "pass" of real voltage figures through the controller board. It starts reading everything correctly and the battery revitalization is successful.

Probably, novice electronics lovers will be interested in knowing how to reanimate a phone battery using another battery (if, of course, it is at hand). To do this, you will need any other 9 volt battery, some electrical tape, and a regular thin wire.

Further, the algorithm of actions will be as follows:

• The wiring must be routed to the battery contacts that we are reanimating. There must be separate wires for each contact.
• Never short-circuit the plus and minus contacts with only one wire. A short circuit may occur, and it will be impossible to restore the battery.
• The connections should be secured with electrical tape. , having made a preliminary mark with a marker which wire is connected to which contact.
• Connect the wires from the "positive" pole of the nine-volt battery to the "positive" contact of the recovered battery.
• Connect the negative contact in the same way.
• Also secure all contacts with electrical tape. so that the wiring does not come off during the "resuscitation" process.
• Now you gotta wait a while , keeping an eye on the condition of the battery: it should warm up slightly.
• When the battery becomes intensely warm, it must be disconnected from the "donor" battery , insert it into your mobile phone and check its work.

When you turn on your cell phone, you should immediately see the battery charge level and put the phone to charge in normal mode.

Many sources also tell you how to revive a dead lithium-ion battery by simply putting it in the freezer for 12 hours. On the one hand, it seems funny. But those who actually tried to do this claim that this method really works.

It is recommended to place the battery in a tight bag so that no water gets into it. It is better to take a plastic bag. Paper and foil are not suitable because they allow water to pass through. The packaged battery is placed in the freezer for 12 hours - it is argued that by freezing the battery it can restore some amount of capacity , and this will already allow you to charge it in the usual way.

After removing the battery from the freezer, you need to give it the opportunity to warm up to room temperature, after which you can try to start charging it. Be sure to wipe the battery dry before charging.

When restoring lithium-ion batteries in any available way, you should remember that their "aging" directly depends on a certain period of time. The shelf life of such batteries is, on average, two years. After that, their capacity can be significantly lost. And in the case of a very deep discharge of "resuscitation", not all batteries are amenable to. Also, using a nine-volt battery as a "donor" battery, do not recharge those batteries that are in good working order from it: this can lead to a fire.

A few words about swollen batteries. Typically, the battery will swell due to mechanical or thermal influences. Gases have formed inside it, and they are always potentially dangerous.

Of course, on the Internet you can find a lot of videos about how some craftsmen restore a swollen battery by piercing it with an ordinary needle or awl to “get the air out”. From the outside it looks very confident and safe. But in certain cases, inflammation and even poisoning can occur. It all depends on the level at which the chemical reaction inside the battery is currently located. If it is swollen, it is strongly not recommended to “reanimate” it. It is better not to risk it, but to look for a new one, although sometimes it is not easy to find a suitable battery for a specific gadget model.

So, to the question of how to restore a phone battery, there are many answers that actually work in practice. Also, it will not be superfluous to learn about the battery calibration of Android devices.

Modern storage batteries remain one of the biggest challenges for both manufacturers and consumers. And it's not so much about the potential risk of fire, but about the gradual depletion of the power source itself. Therefore, you should not be surprised that with daily charging, the batteries can withstand a year or two of active use, after which their capacity drops dramatically and it becomes problematic to use your favorite gadget. You cannot completely reanimate a deceased battery, but you can extend the period of active use while you are looking for a replacement. We will talk about this today.

The recommendations below are designed for a technically trained user, therefore, if you do not know which side to approach the soldering iron, it is better to either contact the services of a service center, or immediately go to the store for a new battery.

He will be able to help in cases where, due to prolonged work, gases begin to accumulate inside, as a result of which the battery swells and does not hold a charge well.

Required tools and materials: a soldering iron, some epoxy, a thin needle, a flat, heavy leveling object.

Disconnect the battery case from the upper block with the sensor as carefully as possible.

We separate the electronic sensor.

There should be a cap under it, inside which the control electronics are hidden. We carefully pierce it, for which a thin needle is well suited. Remember that it will be impossible to reanimate the battery with a damaged filling.

Next, you need to roughly estimate the size of the battery and find a flat heavy object that will be slightly large in area.

The most crucial moment. We put the battery on the table and press it down with a press. Keep in mind: excessive force can render the battery unusable, and a lack of it, on the contrary, will not lead to the desired result. It is also categorically not recommended to use a vice or a device similar in purpose for repairs.

When you're done, put some epoxy on the hole and solder the sensor.

He is not able to reanimate a battery with a significantly reduced resource, but he can slightly extend its life. You shouldn't count on much, but a reanimated battery will be able to provide power to a modern smartphone while you are looking for a replacement.

Required tools and materials: any power supply unit (5–12 V, current not less than 0.1 A), voltmeter or tester for voltage control, resistor (power not less than 500 mW, resistance from 330 to 1000 Ohm).

If you do not have a spare power supply, almost any complete one from active network equipment (switches, routers, modems) will do. First, you should make sure that the parameters of the current output by them correspond to the required ones.

We release the contacts of the power supply and connect them with a dead battery: "minus" of the power supply with "minus" of the battery, and add a resistor to the "positive" line. Be sure to check the correct polarity with a multimeter.

When everything is done, plug the power supply into the mains. The procedure time is no more than 2-3 minutes. If possible, control the process with a tester: the maximum allowable voltage is no more than 3.3 V.

Do not leave a problem battery unattended during repairs. Cases of spontaneous combustion are not a theory, but a harsh reality.

Periodically check the temperature of the "client" with an external thermocouple, electronic thermometer or simply by hand. If the surface feels hot and not just warm to you, stop repairing immediately.

Excessive charging currents should not be used. The most you can afford is 50mAh. This parameter is calculated as follows: the power supply voltage of the power supply is divided by the capacity of the resistor. For example, if the first parameter is 12 V, and the second is 500 Ohm, then the charging current will be 24 mAh.

You can use a standard 80mm computer fan instead of a resistor.

It is also recommended to monitor the initial charging of a remanufactured battery to avoid spontaneous combustion.

The technique is controversial and dubious, but, according to reviews on specialized forums, it helps some users, because the responsibility for possible negative consequences lies with you.

Required tools and materials: working refrigerator.

Remove the battery, which does not show signs of life, from the smartphone and put a plastic bag, which should be put in the freezer for 20-30 minutes.

Then take it out of the refrigerator, insert it into the phone and charge for about 1 minute.

Remove it from the device, let it warm up to room temperature, then charge it in the usual way.

A harmless but ineffective resuscitation technique. But if it seems to you that the battery in your smartphone is completely out of order, then why not give it a try?

Required tools and materials: Smartphone with standard charger.

Bring the battery to a full discharge (when the phone no longer turns on). Any resource-intensive game or AnTuTu utility can help with this.

Fully charge the battery to the 100% mark.

Repeat steps 1 and 2 several times.

Nearly all professional electricians will find the following procedure blasphemous, but it has helped many old battery users.

Important note: it is strongly discouraged to use this technique if you have not tried other, less risky methods.

Required tools and materials: razor blade, thin screwdriver, moment glue.

We remove the battery from the phone.

Peel off the sticker with technical characteristics.

Cut off the top plastic cover as much as possible, behind which the control electronics are hidden.

We short them for a moment with any metal object.

We glue the top cover and let it dry.

We remind you once again that none of the above methods of resuscitation does not guarantee a 100% result, and all responsibility rests entirely on your shoulders. But if the battery has turned off completely, and the purchase of a new one is postponed for several days, it's worth a try. But if you rarely pick up a soldering iron and consider yourself a humanitarian, it is better to seek help from a friend who understands the topic.

Cell phones become outdated very quickly (probably even faster than computers), and it often turns out that replacing the old battery in the phone is problematic. They are simply not produced, and therefore high-quality batteries are not on sale (Chinese crafts in self-made plastic bags do not count - there is no point in buying them, they usually do not hold a charge for a long time). It's a shame to throw away a perfectly serviceable phone to which you are very accustomed.

If you know how to hold a soldering iron in your hands a little, then you can simply solve this problem. This is possible, since the energy carrier in all batteries for mobile phones is the same according to technology - almost always this Li-Ion (lithium-ion) or Li-Polymer (lithium polymer) cell with voltage in 3.6 — 3.7 volts. The only difference is in the size of the battery, the location and the number of contacts on it. You buy any (I emphasize - ANY) battery from another modern phone, approximately suitable in size, and then you just need to pull out the energy carrier from there and transfer it to the case of the old battery. In what follows, for simplicity, I will refer to the assembly of the case, controller and electrical element as "accumulator" or "battery", and the electrical element inside the battery - "energy carrier" or "element" or "can". The battery was replaced for the Siemens ME45 phone.

So, the process of restoring an old battery consists of a few simple steps:

Step 1... You open the phone, take out the old battery, determine its type and capacity. For my Siemens ME45 it was a Li-Ion battery with a capacity of 840 ma / h, voltage of 3.7 volts, see photo.

The most important thing is to define battery type (Li-Ion or Li-Polymer). The fact is that the charging mode and the device of the battery controller (a special electronic circuit that ensures the correct charge) depend on this. Li-Polymer batteries are afraid of overcharging, so I would not advise you to change the Li-Ion cell to Li-Polymer in an old battery.

Note... In terms of voltage, Li-Ion and Li-Polymer are almost the same. Li-Polymer has lower internal resistance and greater energy capacity than Li-Ion with the same size and weight, so Li-Polymer batteries are used in aircraft modeling to power propulsion systems. The disadvantage of Li-Polymer is that it is afraid of overloading (it swells and can explode). Never leave a charging Li-Polymer battery unattended, and use only chargers specially designed for Li-Polymer to charge it!

Step 2... Now it's worth disassembling the old battery and familiarizing yourself with the contents. The filling is not very complicated - the case contains a controller (a small scarf) and an energy carrier - a weighty rectangle with two contacts. The contacts of the controller go outside, and the energy carrier is connected to it inside.

The controller board is visible from the bottom, while the outer battery contacts are in the background, in this photo at the bottom left.

The energy carrier is raised, the rear part of the outer contacts is visible, as well as the bus “-“ (to the left, in the center) and the bus “+” of the energy carrier (to the right), soldered to the controller.

This is a top view of the controller. On this side, the power rails from the element are soldered (in the photo it is already sealed off). Large eight-legged chip 9926A - this is a field-effect transistor, which serves as a key, and a small 6-foot micrushka 521A most likely a specialized chip (I could not find its description), which measures the cell voltage and determines the logic of the controller's operation (controls the field-effect transistor and the cell charging process).

View of the controller board "from below" on this side external contacts are soldered.

Step 3... Go to the store, show the seller an old battery and ask them to sell the same one. The seller, of course, says that I'm sorry, there are no such batteries. Then you ask him to show all the battery models he has, and choose from it the one that matches the type (for example, if you had an old Li-Ion battery, then you also need to look for a Li-Ion battery) and has a capacity that suits you ( measured in milliamperes / hours). The larger the capacity, the better. With voltage, everything is easier, you will not miss here - all batteries have one jar inside with a voltage of 3.6 .. 3.7 volts. Pay attention also to the quality of the packaging and the release time of the battery, the fresher the battery, the better - it will last longer. Change only Li-Ion to Li-Ion and Li-Polymer to Li-Polymer!

Step 4... Carefully disassemble the new battery, separate the cell from the controller. If possible, try to unsolder it - this will simplify the connection of the element to the old controller. I could not unsolder (the junction was filled with compound), and I just had to tear it off. After this procedure, two contacts should stick out of the element - plus and minus, which must be irradiated and then soldered to the old controller. Attention! Do not reverse polarity and do not accidentally short-circuit the cell contacts while soldering.

At this step, I had to face a small problem - the positive contact of the element was made of aluminum and flatly refused to be serviced. In addition, it was very delicate (in fact, a thick foil) and could come off with any careless movement. I had to figure out how to make a reliable contact for him. The old socket helped out from DIP microcircuits - 2 contacts from it just came up for this purpose. They were springy and well connected to the element contact, see photos.

The energy carrier is visible here, the controller has already been torn off from it. On the left - a negative contact, it was possible to irradiate it. On the right - a positive aluminum contact and contacts from the socket, prepared for connection. In order for the element to fit into the battery case, I had to squeeze it slightly on the sides. This operation must be done very carefully - in no case should the tightness of the battery be damaged (especially for Li-Polymer).

The socket contacts are mounted on the element contact.

Then, with a thin tinned vein from the MGTF wire, I fixed the contacts and, for reliability, slightly soldered, trying to put rosin as little as possible (so that it did not get between the element contact and the socket contacts).

Almost finished battery. Soft blue pads (I took shock-absorbing washers from an old CD-ROM) are needed so that the element does not dangle in the battery case. It remains to close the lid, and the blowdown is complete. I didn’t glue the lid, but just wrapped it in 2 layers of tape.

"Old man" with a new battery - everything is in order!

This is all that remains of the "donor" - a label and a broken controller.

Repair of LI-Ion mobile phone batteries

Mobile phone battery (original) is not cheap, and sometimes it is even difficult to get a battery for some smartphones.The main reasons why the battery may become unusable are improper charging, a damaged battery current sensor and other factors (long-term and loaded operation of the phone, etc.).

All these influences lead to early failure of the battery and after a while you can feel that the battery is swollen. A swollen battery is not suitable for further use, the back cover is uneven, and discharges quickly due to the accumulation of gases that make the battery plates move away from each other.

What to do in such cases? Batteries for mobile devices are mainly manufactured in metal and aluminum cases. Any battery in an aluminum case has a kind of cap, which is located under the sensor board. Such a cap can be easily pierced with a regular needle or nail. First, you need to carefully separate the upper part with the contacts and the sensor board from the general battery case. This sensor protects the battery from overload; in case of malfunction, it cuts off the voltage supply from the battery to the load. This can be verified by closing the contacts with a piece of wire, with a short circuit, the circuit is triggered by turning off the power, which saves the battery in emergency cases. In addition, the sensor acts as a battery charge controller.

The sensor itself is connected to the battery by spot welding, therefore, after the restoration work, the sensor will have to be soldered with ordinary tin, it may be necessary to remove the old tires and replace them with wires - for the convenience of soldering.

You need to pierce the battery very carefully so as not to accidentally damage the filling itself. The resulting gas will escape, but the housing will remain deformed. To give the same look, you need an object with a flat surface (preferably metal). They are the ones who need to squeeze the battery case, you may have to deliver a couple of light blows with a hammer. After the body is aligned, the puncture site must be sealed. Fill the hole, preferably with a drop of epoxy resin, you can, as a last resort, use silicone or waterproof glue moment.

It is advisable to carry out all operations with a discharged battery, since after recovery it will all be discharged evenly. Then we put the battery on charge, preferably with a universal charger (in common people - a frog).

Charger repair:

Renovation playlist:

Link to blog post:

In this video, I tell you how I used to very simply restore lithium with my own hands, namely lithium-ion (Li-Ion) batteries even before buying the Imax B6 charger. This method is very simple and as it turned out to be quite effective, I have thus restored probably from three dozen batteries of different capacities, even swollen batteries were restored.
For this we need:

- Power supply for 12V;
- A fan from a computer, preferably not very powerful, 80 × 80 mm will come off;
- Wires to connect all this;
- Multimeter (optional).

We connect to the power supply unit as shown in the figure, namely, +12 V to the + battery (as a rule, the battery has the indicated polarity) - the power supply to the black fan wire, and the red fan wire to the non-working battery.

If the fan does not spin, it means that you may have reversed the polarity of the fan, or the battery will not lie down for recovery.

In addition to the battery in the video, I managed to restore two more batteries, also from Nokia phones.

!ATTENTION! do not allow voltage higher than 4.2 V on the battery in order to avoid disastrous consequences.

Video How to recover a battery from a mobile phone (alternative method) by Techn0man1ac channel

solar panels novosibirsk do it yourself, reviews of solar controllers, review of solar panels, testing, electric transport, LEDs, motor wheel, do it yourself, solar panels

Many do not run to restore supposedly dead batteries from phones or any devices, but go to buy new ones, although in vain you can try to restore most batteries, I will demonstrate to you one of my effective ways in the video.

The most interesting thing is that the battery has a memory and has been dead for more than 5 years. The battery capacity in the phone at the moment of the beginning of the video, and indeed of the beginning of the recovery, can be seen at the beginning of the video. It is equal to round zero! there wasn't even 0.0001 V!

I tried to charge the battery through a Chinese frog, the electronics did not work out only from the internal voltage of the Battery, which is equal to 0. This is a driver that monitors the charge and state of the battery.

I restored this phone to my son as a toy, although in terms of quality and life time these phones can compete with modern phones for weeks. Rarely do they live with anyone. Even after the usual fall, but the old models lived with my work for a very long time! And I didn't bother looking for shockproof phones, etc.!

If you have a desire, you can try to restore the battery yourself, if you are still going to buy a new one!