The adapter for the laptop, like any electronics, can fail at any time. On a single battery charge the laptop is also not able to work for a long time. If at the same time there is no way to leave the house and purchase the necessary accessory in a nearby store, then the problem may become a natural disaster.
In a situation where the laptop battery is at zero and the charger does not work, alternative methods of restoring the battery charge can be used.
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Is it possible to charge a laptop battery without a charger
If there is a need to restore the battery capacity without a charger, you should be aware that any unprofessional interference in any electronics node will automatically lead to the termination of the warranty on the part of the manufacturer.
Even if the integrity of the seals, labels and packaging is preserved, highly qualified specialists will be able to determine the reason for the failure of the laptop.
If the device is no longer under warranty or the research itch is so great that even the risk of losing a serviceable device cannot stop, then you can use the recommendations in this article.
The main rule when carrying out such manipulations with technically sophisticated household appliances is the presence of average knowledge in the field of electronics and electrical engineering. Possession of a soldering iron and the necessary tools when doing similar work is also mandatory.
All of the above recommendations do not matter if the charger is out of order during a business trip or travel. Moreover, when traveling outside the Russian Federation, many tourists will also not be able to charge a laptop, even with an adapter.
Purely technically charging a laptop without a charger is real, but in practice it is extremely difficult to implement. If you need this because, for example, you forgot the charger at home and you need to restore the capacity with improvised means, then you definitely will not succeed.
After all, you need to plug in something from the outlet into the device connector and convert the voltage from 220 volts to ~ 19.5 volts with a current strength of ~ 3 amperes. (More precisely, you can find out by looking at the values on your battery)
The following will describe the methods by which you can charge the laptop without a charger and you will understand how difficult it is.
What is the main difficulty?
Batteries that provide electricity to a laptop should only be charged with current of certain characteristics. Deviation, both up and down, can provoke a battery failure, and in the case when charging is carried out through the laptop socket - burnout of expensive electronic components.
The permissible voltage range at which you can charge the laptop battery is indicated on its case. With an independent connection, you can not do without the use of a multimeter, which should be in good condition and show values accurate to tenths.
Despite the fact that any wires can be connected with a simple twist, this is not worth doing.In such places, as a rule, heating occurs, which can lead to melting of the insulation and short circuit. Therefore, to carry out the work, one cannot do without soldering equipment and materials.
In addition to these difficulties, an alternative source of electricity should produce a current of a certain value. If the charge is exceeded in amperes, the battery and laptop computer may also fail.
We charge the laptop without a charger
If the charger from the laptop is out of order, then you can try to charge the battery using a transformer. You can perform this operation without removing the battery from the laptop case. The main thing is to get a direct current at the output of the charger, which will correspond to the necessary parameters in terms of voltage and power.
As a connecting cable, you can use a wire with a plug from a faulty memory. The wire should be cut in the immediate vicinity of the converter. You can determine the positive conductor by color coding.
As a rule, the positive core is painted red, but to eliminate the error, you should use a digital or arrow tester. With the help of such a device, it is possible to easily determine the negative conductor.
To do this, you must put the device in the mode of measuring resistance of 2,000 Ohms. Then you should remove the laptop battery and touch with one probe to the negative contact of the battery seat located in the case. The second probe should be alternately connected to the cable cores. The resistance of the negative conductor, in this case, will be as close to zero as possible.
At the next stage of independent searches for alternative methods of charging, it is necessary to find or manufacture independently an electric current source. Almost any transformer from old household appliances can be used to charge a laptop. To make a memory device based on such an element, the following steps should be performed:
- Remove the transformer from the device.
- Connect it to the network by soldering an electric cable with a plug to its input.
- Using caution with a multimeter, find the voltage at the terminals of the transformer equal to 14 V.
- Make a simple rectifier of 4 diodes and a capacitor, which then connect to the terminals of the transformer.
- Solder to the rectifier, observing the polarity, previously separated from the faulty memory cable.
- Connect the transformer to the network, and the output connector to the laptop socket.
If, when researching an old transformer, it was not possible to detect outputs with the necessary voltage, then it can be easily raised or lowered. In order to reduce the output voltage of the transformer, it is enough to rewind a certain number of turns of the working winding.
To increase - add the number of turns with a wire of the same cross section. Significantly simplify the work of setting up a homemade charger using small circuits of DC / DC converters.
We charge the batteries from the disassembled battery
The laptop battery consists of several lithium batteries of type 18650, so it is enough to disassemble such a product and charge each individual battery separately to fully restore the laptop.
Most of the batteries are not designed to be disassembled, so you need to gently draw a clerical knife blade along the seam of the case of such a part, and then, using thin, preferably non-metallic objects, open the case.
Next, you need to unsolder all the wires coming from the controller to the batteries, and then carefully remove the batteries from the case. To restore the charge, you should use special memory for type 18650 batteries.
After each element is charged, the battery is assembled. All actions are performed in reverse order. To connect the two halves of the battery case, you can use glue, adhesive tape or electrical tape.
Alternative laptop charging options
There are safer alternatives for charging your laptop. You can restore the charge using the adapter from the car cigarette lighter, Power Bank, as well as a solar-powered charger.
You just need to prepare in advance for such a situation and purchase a second memory in advance and leave it at work. Throw a Power Bank into the travel suitcase, a dynamo car or a solar powered charger. In the car, purchase a charger from the cigarette lighter.
We charge from the cigarette lighter
This device will not only restore the battery, but also use the laptop for long trips by car. Even if you do not have a car, you can use this device if you purchase a small 12 V battery and a cigarette lighter socket, the contacts of which should be connected to the corresponding battery terminals.
Through a special Power Bank
Such a backup power supply is simply indispensable on a business trip. The capacity of such devices can be more than 10 times the nominal capacity of the internal battery. Power Bank has a small weight and dimensions, so there are no difficulties in transporting such products.
Solar powered charger
Such a power source for a laptop is useful for long trips to the forest or fishing. The only condition for the normal operation of such a device is sunny weather.
Any of these devices will make it easy to do without charging for a laptop. The disadvantage of such devices is only the need to purchase them in advance.
How do you fail to restore the battery capacity
There are many “popular” ways to restore the capacity of a laptop battery, which can cause not only the failure of expensive equipment, but also lead to fire or serious injury.
Via USB
Unfortunately, only a limited number of laptop models can work from a USB port. Moreover, through normal USB, you can’t charge at all, only through the USB-C connector and then only those devices where this is the only way to charge.
For devices in which such a possibility is not provided by the manufacturer, a self-made alteration of the output will not bring the desired result, because the voltage at the output of such a port is much lower than necessary.
By mechanical action
As you know, the operation of salt batteries can be slightly extended if their body is slightly deformed in the middle. The use of mechanical stresses on lithium cells is strictly prohibited, because even with minor damage to the housing, a battery fire can occur. In addition, further use of such a product will be impossible.
By heating or cooling the battery
The maximum operating temperature of a lithium battery is limited to 60 degrees Celsius. If this parameter is exceeded, the battery may explode. Cooling the battery from the laptop should also not be. This procedure, as a rule, does not lead to any negative consequences, but the battery charge from such "hardening" will not be restored.
In general, experimenting with lithium batteries should not be. The best option for restoring the charge of such products is to connect the computer to an adapter that is suitable for the parameters. To protect yourself from an unpleasant situation when charging suddenly fails, it is enough to purchase a spare memory of the same type.
