The need to charge a laptop battery without a laptop is rare for a crane, but this also happens. For example, when the "native" laptop connector broke down or to solve their non-standard technical problems.
Content
Is it possible to 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 you need to properly make a charger, and also connect the product, observing the polarity.
To perform such actions, it is advisable to be well versed in technology and electrics, but even if there are no such skills, following the step-by-step recommendations outlined in this article will fully restore the laptop battery.
What are the main difficulties
The main difficulty when trying to charge the laptop battery directly is the inability to qualitatively connect the contacts of the charger with the battery terminals. When making a charger yourself, it is very difficult to set the required voltage and current values.
When using a standard charger, difficulties also arise. The charger plug cannot be connected directly to the batteries, however, 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, observing the polarity.
In general, there are many 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 compromising the performance of the charger and laptop.
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 element separately, but consider all the options.
Connecting the adapter directly to the battery
This method of charging the laptop battery from a standard adapter will fully restore the battery. Direct charging is carried out in the following sequence:
- Remove the battery from the laptop.
- Determine the polarity of the terminals.
- Connect the charger plug to the battery terminals with pieces of copper wire.
If the polarity is not indicated on the battery case, then even on a strongly discharged battery, this parameter can be determined using a multimeter. If the terminals are protected by a plastic partition and it is impossible to reach the metal part with the probe tester, then use two metal clips.
These elements should be sequentially installed in the holes of the battery connector and measured with a multimeter, which must first be put into direct current measurement mode. After the device shows a value other than zero and there is no dash in front of the numbers, you should fix this position by folding a paper clip to which the red probe of the meter is connected.
This contact will correspond to the plus of the power source, and the other conductor will be a minus.If the polarity is not indicated on the plug or adapter case, then a similar operation should be done with the electrical output of the charger.
Having determined the polarity of the battery and the adapter, you can proceed to connect the charger to the battery. For this purpose it is better to use a copper wire. It is advisable to use conductors with different insulation colors in order to accidentally prevent errors when connecting the battery.
In order to charge the battery it is enough to connect one wire plus the plug with the plus of the battery, and use the second wire to do the same operation with respect to the negative contact.
This design is quite dangerous, do not touch bare wires and make sure that they do not touch wood or paper.
Disassemble the battery and charge the elements separately
The laptop’s battery consists of several li-ion cells of type 18650, so if the adapter is faulty or the laptop does not charge via the connector, you can disassemble the laptop’s battery and remove individual batteries and charge them using a conventional charger for finger batteries.
The battery case, as a rule, is soldered in two parts, so it’s enough to gently pry it in the middle with a sharp object that 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 the 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 there is a need for regular charging of the laptop in this way, it is better to connect the parts of the battery case with adhesive tape.
Which laptop batteries can be charged this way?
If the battery can be removed from the laptop case, then it can be easily charged with the above methods. Currently, a large number of such devices are presented on the market, among which the following brands can be distinguished:
- Asus;
- Acer
- Hp;
- Samsung
- Dell
- Xiaomi
- Lenovo
- Sony
- MSI
The batteries of these laptop models can be relatively easily disassembled, therefore, to restore the charge, you can use individual elements or charge the product without disassembling the battery by connecting its contacts with the wires to the corresponding contacts of the adapter.
Things are much more difficult with laptops with built-in batteries, there you already have to disassemble half of the device in order to remove the power source.
Error Consequences and Precautions
When using the methods described in this article to charge a laptop’s battery, safety precautions must be observed. First of all, polarity reversal should be avoided.
If the connection is incorrect, the battery can be very easily damaged, so before connecting the wires, you need to double-check the position of the positive and negative contacts on the adapter and battery with a multimeter.
When charging a laptop battery without a laptop, you should constantly monitor the battery temperature. If the battery is significantly heated, the charger should be disconnected from the mains or the battery should be disconnected if the product is fully charged. You can check the charge of the power source using a conventional multimeter, switching the device to DC current measurement mode.
Have questions or have something to add to the article? Then write to us about it in the comments. This will help make the article more complete and useful!
