How to turn on a phone without a battery - all methods

There are situations when you need to turn on a phone that has been lying idle for many years, for example, to copy contacts from it or save photos. During inactivity, its battery loses all capacity, often swells and becomes unusable. Therefore, the question “is it really possible to turn on the phone without a battery?” occurs. There are ways, and it’s immediately worth noting that with old mobile phones things are much simpler.

You may need to turn on your phone without a battery when trying to activate an old device to download data.

When you need to turn on your phone without a battery

When deciding to repair the device yourself, you should be prepared for possible risks and soberly assess them. Owners of old phones are lucky, as they can be easily turned on using an adapter.

Modern devices allow you to connect directly to the board inputs. The main thing is to use the correct adapter and not mix up the poles.

When you may need to turn on a gadget without a battery:

• you need to check the working condition of the phone;
• you urgently need to turn on the device to extract data;
• The device is planned to be redesigned to function without a battery.
• the battery does not function due to a breakdown or is completely discharged;
• battery capacity is lost;
• the old device is necessary for use in alarm systems.

How to understand that your phone battery has outlived its usefulness:

• the battery discharges quickly;
• the phone cannot be fully charged, no matter how long it has been connected to the power cable;
• The device gets very hot during charging.

Most often, the process of connecting a phone without a battery is associated with extracting important data from it. Regardless of the reason, you need to know how to properly turn on the device without causing harm.

Why is this necessary?

There are times when it is necessary to start a mobile phone without a battery. This is often practiced if the gadget will be part of a security and GSM alarm system. Outdated mobile phones are often used in such systems with dialing and notifications via cellular communications.

Also in this way you can check the performance of the smartphone if you suspect that its battery is broken.

In an emergency situation, a person who finds themselves with a dead or damaged device may need to make an urgent call. An old phone with a damaged battery may contain important data for the subscriber . To remove them, it is best to use the ability to start a gadget without a battery rather than purchasing a new battery.

How to turn on a phone without a battery: connect the phone to a charger

The most accessible method of solving the problem is to read the connections of the gadget without a battery to the charger. As practice shows, a cellular device cannot operate without a battery while being charged, since there is a difference in voltage and current used. The mobile phone will indicate that the battery needs to be inserted.

At the same time, some phone models, for example, iPhones, can actually turn on and even work when connected to a charger. The battery indicator will not be displayed correctly.

If you have a good power connector at hand, you can try turning on the device using it. What you need to pay attention to:

• there is no need to think out and invent something new - the phone is connected to the charger;
• You can connect a higher power adapter by first reading the manufacturer's manual or advice.

What actions need to be taken:

• open the device case;
• find contacts of the energy source;
• check the “plus” and “minus” values ​​– for this you will need a multimeter;
• take a special power cord with short circuit protection;
• using a voltmeter, find contacts with voltage readings of 3.2–3.7 volts;
• taking into account the polarities, connect the power cables to them.

In order to understand whether the phone is working or not, you should apply current to the adapter after inserting it into the socket. Under no circumstances should you touch the wires, as they may be live.

If all else fails, you can try swapping the cables; the polarities may be reversed.

Some users claim that replacing the charger cable with a larger glow and shorter length helped them. That is why the cable material, its length and cross-section are important.

We start by applying power directly to the battery contacts

So, is it possible to turn on the phone without a battery if connecting the charger to the standard socket did not help? Yes, but knowledge of electrical engineering and accuracy will be required. You will also need a multimeter and a constant voltage source of 3.5-4.2 V.

We take out the standard battery and observe 3, less often 4 contacts. The power contacts for all device models are located at the edges.

But you need to decide which one is positive and which is negative. This can be determined by the markings on the battery.

To determine the polarity, we focus on the markings

Now about the voltage source. It is often recommended to use a five-volt adapter. Yes, the number often works, but there is a big risk of burning the gadget, since the voltage is too high. The ideal option is any fully charged lithium battery, and not just from a phone. For example, a cylindrical one of size 18650 will do. We calculate the polarity of this battery and connect it with wires to the terminals of the phone. It’s better to solder the wires, especially if we are going to permanently switch the gadget to mains power.

If we are going to buy a battery, then we can temporarily “pin the wires” by clinging to them with “crocodiles”, squeezing them with an elastic band or even wooden blocks. But there is a risk of losing all the data, or even damaging the phone due to poor contact or short circuit.

This is the know-how with wooden chocks.
Not every mobile phone without a battery will be happy with this solution and start up. Everything again depends on the model. Many even old devices cannot be turned on using this method. But there is a way out. In the photo above we see a resistor connected between the middle and negative contacts.

Thus, we deceive the gadget, which, through the third contact, receives information about the condition of the battery - its temperature, and in some smartphones, service data - battery serial number, model, capacity, etc. So, we solder a 20 kOhm resistor between the middle and negative terminals . Most likely, you will be able to turn on the phone without a battery.

Important! By conducting such experiments with modern smartphones, we are taking a big risk. Such gadgets are smart, gentle and sensitive natures. They can easily fail.

Well, the last, most trouble-free way is to use the controller from the “native” battery to any other one. This is especially true in new models that exchange information with the battery. The latter is stitched into the controller, so that the soldered phone instead of the failed one will be accepted as a native one. So, we unsolder the controller from the “dead” native battery and instead of it we solder any other one from the phone or the same 18650.

We insert the controller with a new battery into the phone. If the battery of another model does not fit into the compartment, then we solder it on the wires, and insert the controller into the phone, again using rubber bands or blocks.

Try connecting directly

This method will require the use of special devices, without which it will be impossible to perform any actions. At a minimum, you will need a power supply with short circuit protection, a multimeter, a USB cable and a soldering iron.

How to connect to your phone directly:

• take an unnecessary battery case, which has a pad for contacts;
• the contacts are soldered to the required resistances, suitable specifically for this phone;
• connect the clamps located between the two outermost workers through a resistance to a cable having a negative charge;
• connect the wires from the power supply;
• turn on the gadget.

If after all the above steps the device does not work, then nothing will help. It will be easier to go and buy a new battery.

Physical key(s)

Instructions for ASUS laptop here:

You can disable and enable Wi-Fi on a laptop using the key with a wireless network connection icon in the form of an antenna that distributes the signal. Older laptop computers have a special button. In most new ones, it is combined with one of the function keys F1-F12.

To enable additional features (to use the second function of the button instead of F2), hold it down together with Fn. Typically, an icon will then appear on the display indicating the status of the wireless connection.

The laptop may also have a special button to activate the wireless module. Typically located on the side or top of the keyboard.

Use a controller with an old battery

Alternatively, you can use the controller from an old battery. There is a board responsible for charging the battery. Thanks to this, the supply of energy stops when the device has received a full charge and deep discharge is prevented.

If you solder the charger wires to the board and connect them to the terminals, there is a high chance that the gadget will consider the homemade assembly to be a battery and start up in normal mode.

The ideal and safe option is to desolder the board from the old battery and solder it into the new battery.

Step-by-step connection instructions

It is important to emphasize that this procedure should only be carried out by those people who understand electrical and electronics, because this can provoke serious consequences, where a broken smartphone is the least of the troubles.

Directly to contacts

The procedure is quite simple, and if you follow all safety measures, it can be carried out fairly quickly.

For this:

1. Remove the battery from the phone.
2. Determine where the negative and positive contacts are on the terminals of the device.
3. Connect the wires from the adapter to the device, observing the poles (this can be done using clamps).
4. Turn on the adapter, and then the mobile itself.

If this is the case when you use the device as part of an alarm or security system, then the wires can be soldered and thus the phone will work without a battery constantly.

If you need to turn on the device just once, for an urgent call or to receive important files, then simply secure the cables with the appropriate terminals or even electrical tape.

Via USB

This way it will be quite difficult to turn on the phone, although at first glance it may seem otherwise. The fact is that when charging via USB, the phone takes current only in a limited amount and such a charge may be too little.

In this case, it is necessary to connect elements located on the USB controller to the device board . It is better to use short cables. It is necessary to close all contacts, as in the photo.

Using an old battery

Older batteries have a circuit board that controls the flow of current to the phone. When the battery is 100% charged, the power supply stops, and the controller itself does not allow complete discharge.

In order to use this method, you should take a soldering iron and connect the charging wires to this board, and then connect it to the cable terminals. If everything works, then your phone can mistake this design for a battery and boot the system.

What you need to know

Any equipment repair requires certain knowledge. If we talk about a telephone, it is a complex mechanism that has many parts, microcircuits and wiring. If a problem occurs in the device due to the failure of the battery, you will need to use special skill to turn it on.

Recently, a large number of different phone models have been released on the market. There are devices in which the power connector is separate. It is much easier to deal with them - you will need to know the maximum voltage, current strength and have the appropriate adapter.

Currently, devices with a separate connector are not in demand and are rarely found on sale. In modern smartphones, the charging socket coincides with the USB port.

There are options for starting a gadget without a battery, if it does not have a special connector. But they can harm the device, since it is designed to supply charging only through the battery. All workarounds involve some risk.

If the battery breaks, it is better to try to purchase a new one rather than try to start the device using various homemade means. This option will be cheaper and safe.

Of course, when you urgently need to get important information from your phone, you can take a risk.

If the gadget has a data exchange module with a battery, then without the original power source, most likely, it will not be possible to start it.

What to do if the gadget has a data exchange module:

• take the case of an old battery or you can create an analog model from improvised means, for particularly skilled users;
• the battery has two outer contacts, between which there are information terminals that are connected through a resistance before the last contact to a cable that has a negative discharge;
• You will need to solder the contacts with the same resistance needed for phone batteries.

This method may seem complicated, especially for those who are not good with electronics. What could be the result - at best, nothing will work, at worst, you can break the phone.

If you have no experience working with a soldering iron, then it is better to entrust the process to a master.

Launch Methods

There are several options that will allow you to start your smartphone without using a battery. First of all, this can be done through a separate power connector, which is available on older phone models.

If it is present, then you can try to connect it using charging, because in this way electricity is supplied not through the battery, but directly to the device. You can also achieve the result by using a power adapter with increased power, which is especially important if the method described above turns out to be ineffective, and after the manipulations done the device will not turn on or will work intermittently.

It is important to note that you should monitor the tension so as not to overdo it. You can also try a different cable size.

All of the above methods apply to older phones, but if you wish, you can try to turn on modern smartphones in this way. In order to achieve a positive result, you will need: a power adapter with a voltage of 4 V and a current of up to 2 A, several wires, a multimeter and clamps.

Possible consequences for the phone

When trying to turn on a mobile device without a battery, you should be prepared for any outcome. If the information stored on your phone is very important, you should ask yourself whether the risk is worth it. If not, it’s better to get a new battery and calmly continue using the gadget.

If you are in the mood to experiment, regardless of the outcome, it is important to consider the following points:

• There may be a mismatch between the power and voltage of the supplied current, unstable operation, intermittently - this is true for phones of previous models that have a separate input for power;
• if the actions are incorrect, the power adapter can be damaged, especially if the user does not have knowledge in electronics or does not know how to solder correctly;
• If safety precautions are not followed, you can harm yourself, since the soldering iron and wires are live.

On a note! If you don’t have confidence in your own abilities and knowledge, you should entrust the matter to a professional or someone who has experience working with this type of equipment. The possibility of a short circuit, which could cause the device to catch fire, cannot be ruled out.

The phone does not turn on: reasons

So, you suddenly discovered that your phone has turned off and won’t turn on. Why? Let's try to look at the most common reasons:

1. The phone is dead and won't turn on. This is the easiest and, I must say, common reason. Moreover, the charge could drop sharply and unexpectedly. Even if you are confident in the battery, try taking the charger first and try to revive the phone that way.
2. The gadget flew out of my hands. If the phone is dropped and does not turn on, the screen is most likely damaged. In such cases, the gadget may not show signs of life.
3. The smartphone does not turn on because it has succumbed to temperature changes. This is also a common reason why you can't do anything with your phone.
4. There is moisture in the smartphone and it does not turn on. To do this, it is not necessary to drop the gadget somewhere. Droplets of water may get inside the phone if it has been splashed or if you take the smartphone into the bathroom.
5. The operating system has crashed. Also remember this when you google why your phone won’t turn on.
6. You have entered your password incorrectly multiple times. Some brands of smartphones refuse to work after this.

What to do if your phone doesn’t turn on: nur.kz

Perhaps the gadget only shows the splash screen, vibrates when the screen is black, or the “Apple”/Android sign is stuck on it. The reasons for this are varied. Most likely, the matter is due to “glitches” of the system, a crash. Sometimes the phone freezes on its own, but after a reboot everything returns to its place.

It also happens that the phone does not charge and does not turn on. Here the reason may be damage or contamination of the charger input. Try cleaning it with a toothbrush and wiping it.

In my experience, the situation - the phone turns off and does not turn on - is provoked by plenty of reasons. However, I am sure that you will find why the phone does not turn on.

iPhone: pexels.com

FAQ

Vyacheslav

For several years he worked in mobile phone stores of two large operators. I understand tariffs well and see all the pitfalls. I love gadgets, especially Android ones.

Ask a Question

Question to the expert

What materials and tools should you have on hand?

• To operate, you will need at least the following: • stabilizer; • USB cable; • soldering iron and rosin; • stabilizer; • constant power supply. Having these things with you, we can talk about the possible chances of turning on the phone without a battery.

What consequences may occur for the phone?

When trying to revive a phone without a battery, you should be prepared for anything. What should be taken into account: • unstable operation of the device, with interruptions or complete failure; • in the absence of precise soldering skills, you can damage the device, even if you do everything according to the diagram. If important information is stored on your phone, it is better to entrust the work to a specialist, as there is a risk of losing it.

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