How to charge a laptop battery without a laptop
The need to charge a laptop battery without a laptop is rare, but it does happen. For example, when the “native” laptop connector is broken or to solve their non-standard technical problems.
Which laptop batteries can be charged like this
If the battery can be removed from the laptop case, then it can be easily recharged using the methods described above. Currently, a large number of such devices are presented on the market, among which the following brands can be distinguished:
The batteries of THESE laptop models can be easily disassembled, so to restore the charge, you can use individual cells or charge the products without disassembling the battery, by connecting its contacts using conductors with the corresponding contacts of the adapter.
It is much more difficult to deal with laptops with built-in batteries, there you will already have to disassemble half of the device in order to remove the power source.
What are the main difficulties
The main difficulty when trying to charge the laptop battery directly lies in the impossibility of making high-quality connections of the charger contacts with the battery terminals. When making a charger yourself, it is very difficult to set the required voltage and current values.
Difficulties also arise when using a standard charger. The charger plug cannot be directly connected to the batteries, while an attempt to solder the wires directly to the plus and minus of the connector will render the product unusable.
Many laptop battery models may not have Terminal markings, so it can be very difficult to connect the wires with correct polarity.
In general, there are a lot of difficulties when trying to charge a laptop battery without a laptop, but with the right approach to solving the problem, you can perform this operation without affecting the performance of the charger and the laptop.
Will it really charge the battery without a laptop
Thus, there are no technical restrictions on restoring the battery charge of a laptop computer, but it should be understood that for self-connection it is necessary to make a charger correctly, and also connect the product, observing the polarity.
To perform such actions, it is advisable to be well versed in technology and electricians, but even if there are comments on such skills, following the step-by-step recommendations outlined in this article will allow you to completely restore the laptop battery.
Connecting the adapter directly to the battery
This method of charging the laptop battery from a standard adapter will allow you to fully restore the battery’s performance. Direct charging is carried out in the following sequence:
- Remove the battery from the laptop.
- Determine the polarity of the Terminals.
- Connect pieces of copper wire from the charger to the battery terminals.
If the polarity is not indicated on the battery case, then even on a highly discharged battery, you can determine this parameter using a multimeter. If the terminals are protected by a plastic partition and it is impossible to reach the metal part with the tester probe, then two metal clips should be used.
These elements should be installed one by one in the holes of the battery connector and take measurements with a multimeter, which must first be switched to the DC current measurement mode. After the device shows a value other than zero and at the same time there are dashes in front of the numbers, then you should fix this position, bent the paper clip to which the red probe of the meter is connected.
This contact will correspond to the positive of the power supply, and the other conductor will be negative. If the polarity is not indicated on the plug or the adapter case, then the same operation should be done with the electrical output of the charger.
Having decided on the polarity of the battery and the adapter, you can start connecting the charger to the battery. It is better to use copper wire for this purpose. It is advisable to use conductors with different insulation colors, so that you do not accidentally make mistakes when connecting the battery.
In order to charge the battery, it is enough to connect the plus of the plug with the plus of the battery with one wire, and with the help of the second wire, do the same operation with respect to the negative contact.
This design is rather dangerous, do not touch the bare wires and make sure that they DO NOT touch wood or paper.
Ways to charge the battery without a laptop
There are several working ways to charge the battery without a laptop, but the safest ways are to use standard charging and restore the capacity of each cell separately, but consider all the options.
Disassemble the battery and charge the cells separately
The laptop battery consists of several li-ion cells of the 18650 type, so if the adapter is faulty or the laptop does not charge through the connector, then you can disassemble the laptop battery and remove the individual batteries and charge them using a conventional charger for finger batteries.
The battery case is usually soldered in two parts, so it is enough to gently pry it in the middle with a sharp object to separate one part from the other. Then remove the batteries and install them in the charger.
When the individual cells are 100% charged, the battery is assembled in reverse order. If in this way it was necessary to restore the battery capacity only once, then the two halves of the product should be connected with glue, but if it becomes necessary to regularly charge the laptop in this way, it is better to connect the parts of the battery case with adhesive tape.
Consequences of errors and precautions
You must take precautions when using the methods described in this article to charge the laptop battery. First of all, there should be no polarity reversal.
If connected incorrectly, it is very easy to damage the battery, therefore, before connecting the wires, you must double-check the position of the positive and negative contacts on the adapter and the battery with a multimeter.
When charging a laptop battery without a laptop, you should constantly monitor the battery temperature. In case of significant heating of the battery, the charger should be disconnected from the mains or disconnect the battery if the product is fully charged. You can check the charge of the power source using a conventional multimeter, switched the device to DC measurement mode.
Do you have any questions or do you have something to supplement the article? Then write us about it in the comments. This will help make the article more complete and useful.!
Via USB connector
Unfortunately, only a limited number of laptop models can operate from the USB connector. over, it is generally impossible to charge through ordinary USB only through the USB-C connector and then only devices where this is the only way to charge.
For devices in which such an opportunity 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 required.
Charges batteries from a disassembled battery
The laptop battery consists of several 18650 lithium batteries, 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 intended for disassembly, therefore, you will need to carefully 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 going from the controller to the batteries, and then carefully remove the batteries from the case. To restore the charge, use a special charger for 18650 batteries.
After each cell is charged, the battery is assembled. All steps are performed in reverse order. You can use glue, tape or electrical tape to connect the two halves of the battery case.
Solar battery charger
Such a laptop power supply will come in handy during long trips to the forest or fishing. The only condition for the normal operation of such a device is sunny weather.
Any of the listed devices will make it easy to do without a laptop charger. The disadvantage of such devices is only the need to purchase them in advance.
How to charge a laptop without charging
In a situation where the laptop battery is at zero, and the charger does not work at the same time, you can use alternative methods to restore the battery charge.
How You Can’t Recover Battery Capacity
There are a lot of “popular” ways to restore the capacity of a laptop battery, which can become a prerequisite Not only for the failure of expensive equipment, but also lead to a fire or serious injury.
Charges your laptop without a charger
If the laptop charger is out of order, then you can try to charge the battery using a transformer. It is impossible not to perform this operation. Remove the batteries from the laptop case. The main thing is to obtain a constant current at the output of the chargers, which will correspond to the required parameters in voltage and strength.
A wire with a plug from a faulty charger can be used as a connecting cable. The wire should be cut in the immediate vicinity of the inverter. The positive conductor can be identified by color coding.
As a rule, the positive core is colored red, but to eliminate the error, you should use a digital or pointer tester. Using such a device, you can easily determine the negative conductor.
For this it is necessary to switch the device to the resistance measurement mode of 2000 Ohm. 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 an independent search for alternative charging methods, it is necessary to find or make your own source of electric current. Almost any transformer from old household appliances can be used to charge a laptop. To manufacture a memory based on such an element, the following steps should be performed:
- Remove the transformer from the device.
- Connect it to the network, soldered an electric cable with a plug to its input.
- Using a multimeter, be careful to find a voltage of 14 V at the terminals of the transformer.
- Make a SIMple rectifier from 4 diodes and a capacitor, which is then connected to the terminals of the transformer.
- Soldering to the rectifier, observing the polarity, the cable previously separated from the faulty charger.
- Connect the transformer to the mains, and the output connector to the socket of the laptop.
If, when examining an old transformer, it was not possible to find outputs with the required 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 section. You can significantly SIMplify the work of setting up a homemade charger using small DC voltage converter circuits.
By means of mechanical action
As you know, the operation of saline batteries can be slightly extended if their case is slightly deformed in the middle. The use of mechanical stress on lithium cells is strictly prohibited, because even if the case is slightly damaged, the battery may catch fire. In addition, further use of such a product will be impossible.
Will it really charge a laptop battery without a charger
If there is a need to restore the battery capacity without a charger, then you should be aware that any unprofessional intervention in any electronics unit will automatically lead to the termination of the manufacturer’s warranty.
Even if the integrity of the seals, labels and packaging is preserved, highly qualified specialists will be able to determine the cause of the laptop failure.
If the device is not already under warranty, or the research itch is so great that even the presence of a risk that the device will remain intact cannot be stopped, then you can use the recommendations set forth in this article.
The main rule when carrying out such manipulations with technically complex household appliances is the presence of averages known in the field of electronics and electrical engineering. Possession of a soldering iron and the necessary tools when performing such 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. over, when leaving the Russian Federation, many tourists will also not be able to charge a laptop, even with an adapter.
Technically, it will actually charge a laptop without a charger, but in practice it is extremely difficult to implement. If you need it because, for example, you forgot the charger at home and you need to restore the capacity using improvised means, then you definitely won’t be able to do it.
After all, you need to plug something from the socket into the device connector through something and convert the voltage from 220 volts to
19.5 volts with amperage
3 amperes. ( precisely, you can find out by looking at the values on your battery)
The following will describe the methods by which you can charge a laptop without a charger and you yourself will understand how difficult it is.
Charge from the cigarette lighter
This device will allow not only to restore the battery power, but also to use the laptop during 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.
How can you charge a laptop battery without it
The laptop is equipped with an autonomous power source recharged from an external electrical network. If an external power supply unit is lost or broken, the question arises of how to charge a laptop battery without a laptop. Despite the seeming SIMplicity of the wiring diagram, attempts to use alternative chargers can cause irreparable damage to the battery or laptop.
How to charge a laptop battery directly
Direct charging of the battery from a laptop means supplying direct current to the contact terminals from an external unit. Note that direct charging is a last resort.
What are the difficulties of charging a laptop battery without a laptop
Lithium-based power supplies are used in laptop computers. Batteries are characterized by increased requirements for the conditions for restoring capacity, deviation from the design parameters leads to an accelerated failure of the battery.
For example, an excess of voltage in the charging circuit by 4% leads to an acceleration of the capacity drop by 2 times. over, the effect is repeated every time the charging unit with increased voltage is connected.
The problem of charging the laptop battery from an external power source is the connector in which there are several contacts.
Besides the negative and positive terminals, there are additional contacts for monitoring the charging parameters.
An electronic controller is soldered to the block, which ensures the maintenance of the required parameters of the charging current. If it is incorrectly connected, there is a risk of triggering a safety device that cannot be replaced.
An additional problem is the use of logical keys that separate the lithium battery cells. When directly connected to the charger, the devices block the current supply or go into emergency operation.
If the charging conditions are violated, the battery overheats and explodes. Therefore, all attempts to connect alternative chargers must be made in a ventilated area and in compliance with safety regulations.
A burnt lithium battery cannot be extinguished by traditional means. The product is capable of burning without air access, since during chemical processes oxygen is released, which supports combustion.
The ingress of water on the lithium plates causes the evolution of hydrogen, which together with oxygen forms an explosive gas. Therefore, the user deciding to use alternative charging methods should prepare a carbon dioxide or dry powder fire extinguisher in advance.
What is required
A set of materials needed to restore battery capacity from a laptop:
- Power supply unit with a rectifier module, providing in the external circuit voltage higher than the parameters of the standard battery.
To ensure the charging current, the power of the power supply must be between 50 and 100 W (depending on the capacity and voltage of the laptop battery). It is recommended to use adapters from SIMilar equipment that maintain the specified voltage in the charging circuit.
- Connecting cable made of copper wire with a cross-section of 1–2 mm², solid or stranded cables can be used.
- Variable resistance resistor to adjust the current in the charging circuit. The element must have the necessary power reserve and pass a current of 5-7 A.
- Soldering accessories required to connect copper conductors with lead-tin solders. In addition to an electric soldering iron and solder, you will need flux and a tool to remove the insulator from the patch cable.
- DC voltage test device.
Battery charging process
Before starting to restore the battery capacity without a charger, you need to find out the purpose of the contact pins in the battery connector.
Information is available in specialized literature on the repair and maintenance of computer equipment, but there is no description of the wiring of some of the batteries.
You can find out the purpose of the contacts with a test device or by disassembling the power supply case. After removing the battery cover, all lithium cells are inspected to find the contacts responsible for charging the battery.
For example, in the battery of Lenovo IdeaPad Z565, plus and minus are located on the sides of the 7-pin plug, and three pins in the middle are responsible for assembling the elements. The Asus technology has 2 contacts, which are designed to unlock.
Before starting the recovery, the power supply is discharged until the laptop is turned off. Then the battery is removed to measure the voltage at the terminals.
The battery of the IdeaPad Z565 equipment in a discharged state has a voltage of 10.5 V (with a standard value in a charged state. 11.1 V). For charging, it is important to find out the polarity of the connection, the location of the negative and positive contacts is determined by the test device.
On some multimeters, the diameter of the contact probe does not allow reaching the metal plate. In this case, extension cords made of sewing or medical needles are put on the probes, additional elements are attached with insulating tape.
It must be remembered that when the standard adapter is connected, an electronic controller is turned on in the battery, which limits the current depending on the state of the battery. The user calculates the required resistance rating, a digital multimeter is used to control the obtained parameters. The wiring is soldered to the resistor, the connections are insulated.
Then the cables are connected to the negative and positive contacts of the battery, the conductors are clamped between the elastic contact elements.
Power cables from the power adapter are led out in parallel, the resistance is included in the circuit and it is possible to switch the test device.
Then the plug of the power adapter is inserted into a power outlet and charging begins. It is recommended to periodically check the temperature of the battery; if it heats up quickly to 60 ° C and above, charging stops.
As the battery capacity is restored, the resistance must be reduced, which increases the current in the charging circuit. Since a voltage limiter is provided in the battery design, the power source is charged to a fixed value.
If the battery bank device does not have a voltage regulator, there is a risk of overcharging the battery, which will lead to a rise in temperature and fire the device. Incomplete charging of lithium cells does not have a negative effect on capacity (devices do not have a “memory effect”).
The described technique has been tested by individual users. The battery design uses a controller with memory, which records errors during charging. The slightest violation of the parameters leads to blocking of the power supply.
For example, maintaining an increased voltage in the circuit after the end of charging is recorded as an error that will NOT allow the battery to discharge. To restore operability, you will need to clear the drive from errors, the procedure is performed in the service conditions.
First Charging the Battery
The new lithium-ion DC power supply requires multiple charges and discharges to achieve specified capacity specifications. The equipment supplied from the factory is charged at 50-60% of its capacity (it is necessary to ensure the storage conditions of the device).
It is not recommended to use non-original devices for charging a new battery due to the risk of damage to the DC power supply. To discharge the battery, you must disconnect the external unit and turn on the laptop, the equipment works until it is automatically turned off.
Then it is re-discharged and recharged. Do not store discharged lithium-based batteries as the anode and cathode materials will irreversibly degrade. Periodic training cycles extend the life of the power supply.
How to charge a laptop battery using a car charger
An additional way to restore the capacity of a laptop battery is a charger designed for servicing automotive power supplies.
The equipment theoretically allows charging lithium
Power sources with voltage from 12 to 15 V, a rotary regulator is used to adjust the parameters of the charging current, voltage and current are displayed on the control device.
Connection is made according to a method SIMilar to that used when connecting a non-original charger. The circuit uses a regulating resistance and a test device. But it should be borne in mind that the car charger is designed to restore the capacity of lead-acid batteries.
Manufacturers warn in advance about the inadmissibility of connecting power supplies of the second types. Therefore, it is not recommended to use a car charger to service the laptop battery.
How can you charge a laptop battery without it
Those who often travel on vacation or on business trips know how sometimes spare laptop batteries can be useful. When operating a laptop without connecting to an outlet, the battery energy quickly runs out and here another battery will help out a lot. But here’s how to charge all those extra batteries? It’s a bad idea to take turns putting them in and out of your laptop. The case of the battery and the compartment for it on the laptop are made of plastic, which means that with constant replacement of batteries, all this will quickly wear out. Today we will talk about how to charge a laptop battery without a laptop. We must say right away that you do all the described manipulations at your own peril and risk, since safe battery charging can only be carried out in a laptop or using factory chargers.
How to charge laptop battery directly? What are the difficulties of charging a laptop battery without a laptop?
How to get around a laptop when charging its battery? As you probably know, there are many contacts on the laptop battery connector. In most cases, these are 6, 7 or 9 pins. All of them are designed to monitor the laptop and the operating system with how charging is in progress. At first glance, it is not even clear how to put such a battery on charge. This is not a car battery, where there are only two conclusions and it is impossible to make a mistake.
In various forums about electronics, you can find circuits designed to charge some batteries from different manufacturers. But finding something for your battery is almost impossible.
Meanwhile, the large number of pins on the contact pad is no coincidence. They all have their own purpose. The storage battery is made up of several lithium batteries, which are connected in series and in parallel.
Lithium batteries can easily ignite and even explode as a result of overcharging. If they are subjected to a deep discharge, they may become unusable. Therefore, the laptop battery has Multilevel protection and voltage monitoring of each lithium cell. The controller controls the discharge and charge of lithium batteries. This is the board that is inside the battery case.
All lithium cells that make up the battery have a scatter in the parameter values. In the case of a serial connection, their charging will be uneven. As a result, they will be charged to different voltages. This is not valid for lithium cells. Therefore, a lot of contacts are provided, among which there are conclusions that allow you to control and charge each element individually. Therefore, charging the battery without a laptop is not so SIMple. You may also be interested in an article on how to turn on your phone without battery.
In the process of discharging the BMS, the driver controls the degree of discharge of lithium batteries and disconnects the battery at a certain voltage. This is to ensure that the battery does NOT experience deep discharge.
In general, the question of how to charge the battery without a laptop interested me and I began to dig in this direction. Unfortunately, there is very little information on this topic on the Internet. I watched all thes on Youtube on this topic. Found a SIMilar problem where the author explains how to charge the battery from an Asus laptop without the laptop itself. The link to you can find in the text of the article or in the “” block at the very bottom of the material. Additionally, you can read why the Asus laptop battery indicator blinks.
Described in this. The Asus battery has a 9-pin connector. The author of the found out that two extreme contacts on both sides are 2 pluses and 2 minuses. Three contacts in the middle are designed to read information on 3 pairs of cells that make up the battery. The remaining two contacts were responsible for turning on and off the laptop battery. So they needed to be closed directly to charge the battery without a laptop.
Now to my story. I needed to charge the battery from a laptop Lenovo IdeaPad Z565 in the above way. What came of this, read below.
What is required to charge the battery without a laptop?
In order to charge the battery without a laptop, you will need the following materials and tools:
Power adapter. This can be a regular laptop power adapter or any other that has a voltage that exceeds the rating of your laptop battery. The power should be 60-90 watts. In my case, the nominal value is 11.1 volts. Since I had a standard adapter available, I used it;
- Copper wire with a cross section of 1-2 mm;
- Resistance. It is better if it is a trimming resistor, which can regulate the current supplied to the battery;
- Soldering iron, flux, tin;
- Multimeter for monitoring battery voltage.
The process of charging the laptop battery directly
In my case, the problem was that the Lenovo IdeaPad Z565 laptop battery has a 7-pin connector for connecting to a laptop. No matter how much I scoured the Internet, I did NOT find anything reasonable on this connector.
Basically only general information, disassembling batteries, etc. Nothing to help with the case. The connector looks like this.
Battery Connector Lenovo IdeaPad Z565
Two pins on the edges are plus and minus, and three in the middle are responsible for assembling elements. Two contacts for unlocking, as on Asus, but not. And I logically assumed that such protection on Lenovo batteries is SIMply lacking. And he was right.
To begin with, I discharged the battery right in the laptop until He Disconnected. Disconnected the battery and measured the voltage at the positive and negative terminals with a multimeter. It was 10.5 volts. By the way, be sure to set the polarity. On my battery there were no signs “” “-“. This can be done with the same multimeter when measuring the voltage. If the value is given with a plus, then the polarity of connecting the probes is correct. If minus, the polarity is reversed.
Battery voltage measurement
Multimeter probes with needles
The power adapter, as already mentioned, I used the standard laptop Lenovo IdeaPad Z565. Its output voltage is 20 volts, and the power is 90 watts. That is, it is capable of charging with a current of 4.5 amperes. But I did not dare to turn it on in full. Indeed, in a laptop, the battery is charged under hardware and software control and 7 pins on the connector are not at all for beauty.
So I decided to start by limiting the current to 1.5 amperes. Therefore, I inserted a resistance of 60 ohms into the gap of the positive wire. To do this, I took a tuning resistor, rolled wires to its terminals and, using a multimeter, set the resistance to 60 ohms.
Trimmer resistor with soldered wires
Connecting wires to the laptop battery terminals
I also brought plus and minus from the power adapter. The positive wire was connected inward, and the negative wire to the outer sheath.
Plus and minus from the power adapter
Power adapter wires secured with electrical tape
Then I assembled the entire system according to the diagram below.
Battery charging circuit without laptop
And this is how the system looked in reality.
Battery charging system without laptop
Battery charging system without laptop
Battery charging system without laptop
Then I turned on the adapter with the mains and started charging with a current of 1.5 amperes. At the same time, just in case, I controlled the temperature of the battery, but its temperature did not rise above room temperature. Only the resistor was warming up, but that’s how it works. Periodically monitored the voltage at the terminals. After turning on the adapter, it jumped to 11.25 volts and began to grow slowly. After about forty minutes, I reduced the resistance of the trimmer to 45, and then to 30 ohms. As a result, the current was increased first to 2, and then to 3 amperes.
The nominal battery capacity of my laptop is 4.3mAh. In such conditions, the battery was charged for a little over two hours. The voltage during this time increased to about 12.4 volts and stopped there.
Later, on some forums on electronics, I found information that this behavior indicates the activation of the BMS controller protection.
There can be two options: the voltage stops rising or rises in the nominal voltage of the power adapter. After that, the voltage increase should stop. If it continues to grow, then the controller is NOT working or is missing. You can charge such batteries in this way, but if you miss the end of charging, overheating and ignition of lithium cells may result.
The table below shows the threshold voltages when charging batteries with different ratings.
You probably have a question: “Why a resistor?” Yes, you can connect the wires directly from the adapter and it will charge to full. In my case, this is explained by considerations to keep the battery safe and sound. And to everyone who will try this method, I advise you to connect the battery through a resistor. After all, if, for some reason, the current rises, the resistor will burn out, and the battery will be safe.
What’s the bottom line? We found out that it is possible to charge the battery without a laptop and it is not very difficult. In addition, we learned that the battery on the Lenovo IdeaPad Z565 lacks battery on and off. He has 7 pins on the connector against 9 in the batteries with protection. I’m not sure if this is the same on all 7-pin batteries. Therefore, before charging your laptop battery this way, find out the pinout.
How to save battery power
A charge level in the range of 40-85% is considered acceptable. If you operate your laptop in this mode, it will help protect the battery from premature failure. It is not recommended to use your computer to the limit of its capabilities: the charge level should not drop below 10% of the total battery capacity. If this rule is not followed, the battery loses a certain percentage of its capacity, which contributes to a reduction in its service life.
It is recommended to control the temperature conditions in the room. For a laptop and its battery, the temperature is acceptable in the range of 15. 25 ° C. Some change is allowed up or down. 5. 45 ° C. However, it is not recommended to operate the device for a long time in such modes.
The lower the temperature, the faster the Li-ion battery loses percentage of capacity.
Working with a laptop at temperatures up to 45 ° C must be accompanied by its SIMultaneous cooling. For this, special stands with a fan are used.
You can also save battery power by reducing the load on it. So, the more the computer is loaded when working offline, the faster the battery capacity decreases. As a result, you need to charge your device more often. Under such conditions, the percentage of battery capacity gradually decreases.
If you plan to constantly work with your laptop, you should connect it to a network source. In this case, the need for constant recharging of the battery is reduced, which reduces the rate of loss of capacity.
- In the settings of the laptop, the power saving mode is set, it can be configured to suit your requirements and preferences;
- During the maximum load of the computer (viewing. Games and work in graphic editors), functions that are not yet used, such as Wi-Fi or Bluetooth, are disabled;
- When the laptop is not in use, it is put into sleep or hibernation mode;
- Disable unclaimed programs that run in the background through startup, removes this feature using the task manager.
How to properly charge a laptop battery without a charger
If the power supply fails or the charge level is higher outside the home, when it is not possible to connect the device to a mains voltage source, they consider improvised methods or special means for this purpose. When you need to travel frequently, it is recommended to immediately purchase an external battery.
Charging the laptop battery in the car
On the way, gadgets are used that are connected to the cigarette lighter. It can be a car power adapter, auto inverter. The first option is suitable for a limited number of laptop models.
An autoinverter is a more suitable way. This device converts the voltage of the vehicle. It can be used to connect the power supply on the road. However, if a charger is at hand, a USB adapter can be used. It connects directly to the Auto Inverter.
If you have to travel often, you should purchase a portable power source that can be used in any environment, even if there is no possibility of connecting to the mains voltage.
The solar battery is equipped with an adapter through which it is connected to the power connector of the laptop. By converting solar energy into electrical current, the battery is charged.
over, the output voltage level must be at least 19 V. It is enough to connect the solar battery, having previously placed it in the sun. It must be remembered that in cloudy weather, the charge level of the device also rises, albeit less intensely.
Do I need to remove the battery from the laptop
Modern battery models are designed in such a way that the need to dismantle them disappears, since when the 100% charge level is reached, the current supply stops, which is due to the properties of the power controller. This means it is not necessary to remove the battery.
The exception is a number of cases:
- It is planned to work with a laptop for a long time when connected to a power source, and constant exposure to high voltage contributes to a decrease in the battery capacity;
- There is intense heating of the computer and battery;
- It is planned to turn off the laptop for a long time, while the charge level is deliberately reduced to 40-50%, after which the battery is removed.
It is not recommended to take a break when using such equipment for more than 5 months. When this rule is ignored, the aging process of the battery is accelerated.
What batteries are installed in laptops
- Nickel-cadmium (NiCad): high weight, limited service life (withstand up to 350 charge / discharge cycles). This reduces the cost of the battery. It is used at low and high temperatures. Due to its large size and limited service life, this type of battery is found only in older computer models.
- Nickel metal hydride (NiMh): large in size, but they can last longer than the first of the options considered. This type of battery is considered one of the most environmentally friendly. It does not contain hazardous substances. However, today this type of battery is also rare due to its large size.
- Lithium-ion batteries (Li-ion marking): used more often due to their low weight and compact dimensions. These parameters can reduce the weight of the laptop. In addition, the Li-ion battery lasts longer than the considered analogs.
The disadvantages include only a ban on use at low temperatures. In this case, the operation of the battery is disrupted (capacity decreases). To maintain the device’s performance, it must be turned on at temperatures above 5 ° C.
- Lithium Polymer (Li-pol): This is an improved version of the Li-ion type battery, it uses polymer in the production. This material acts as an electrolyte. The main advantage is its small size. This type of battery is lightweight.
The standard model of such a battery cannot deliver a large current, which reduces the scope of its application: Li-pol devices are installed in compact technology. There are also power batteries. They are characterized by the ability to deliver high current.
How to charge the battery correctly
Most laptops have Li-ion batteries. These batteries are charged according to their specifications. After purchase, the battery should be “overclocked”, for which several full charge / discharge cycles (2-3) are performed. First, you need to connect the computer to the network for the first time, preferably when it is disconnected.
The charge level of a new battery when buying a laptop is average.
The duration of the first charging process varies from 4 to 8 hours. Some consumers leave a new laptop off overnight, but must be connected to the network. When the battery is fully charged, disconnect the device from the power source.
You must use your laptop offline. When the charge level drops to critical (15%), the device is connected to the network. The recharge time is the same. here is 4 to 8 hours.
After that, you can use the laptop in normal mode. However, some consumers immediately start working at the computer in normal conditions after purchase. The manufacturer does not make recommendations on this matter. In the instructions for using a laptop, you can often find information that the device must be connected to the network to charge. There are no more precise recommendations.
It is nevertheless necessary to “overclock” the battery first, since such loyalty of the manufacturer may be due to market demands. Thus, the range of device models is expanding, and the service life of equipment is reduced, which forces consumers to purchase new devices.
Under normal conditions, the battery is charged for several hours (1.5-2). The duration of this period varies depending on the laptop model up or down. You should navigate by the charge level indicator.
Laptop battery charging rules
When learning how to properly charge a laptop battery, first study the instructions. The manufacturer gives recommendations for working with the computer. If you do not follow them, the life of the battery (battery) is reduced.
External battery charging
This method does not require a connection to a mains voltage source. The external battery must have a capacity that is several times the capacity of a laptop battery. The device is connected via a USB adapter.
It is necessary to control the charge level of the external battery. If you take it with you without checking the battery capacity, it may turn out to be useless on the road. After several charging / discharging cycles, the external battery is connected to a power source.