Often the problem occurs on older devices, but sometimes it also appears on newly manufactured devices. There are several main possible causes. The simplest one is failure of the power supply. For example, the wire may have frayed at the bends as a result of frequent changes of position. Other reasons for breakage are:

• High humidity in the air;
• Overheating of the equipment;
• Unintentional shock;
• Power surge;
• Natural wear and tear of internal elements with age.

The battery for the laptop

All batteries sooner or later fail over time. Of course, it takes time, gradually the capacity will be less. The battery life will shorten. If after buying a new device there was enough charge for 5-6 hours, after two or three years it will be half as long. You will need to look for the nearest outlet so as not to remain without a netbook at all.

And the majority of users do not use the technique in the right way, as it should.

For example, when you work with your laptop from the network, the best solution is to remove the battery. But when working offline, put the battery back in place. Many users don't even know to do this. As a result, the battery capacity drops much faster.

Some users leave computers in their cars when it's winter outside, or conversely, work at a laptop next to heating appliances. In these situations, your laptop battery lasts less than it could.

Laptop is rarely used in the first days after purchase, although this is the most important time!

Experts recommend charging your laptop battery fully before using it. Then discharge it to 0%. Do not immediately grab the power supply when the charge will be about 15-30%. You will need to do this procedure at least 3 times. And then the battery to the laptop will be used at full capacity. Alas, but if you do not do this, then its life will be markedly reduced. Many people do not even realize that it is necessary to do such a procedure. So they have to buy a laptop battery more often to replace the old one, able to work only a couple of hours. And the cost of such a purchase is not cheap.

How to choose a laptop battery?

Before choosing a new battery, you will need to pay attention to the following factors:

1. Battery type. Almost every modern laptop is equipped with lithium-ion batteries, Apple products are equipped with modern lithium-polymer batteries. Older models used nickel-cadmium and nickel-metal hydride batteries, now they are quite difficult to find;
2. The frequency with which the computer is used off-line;
3. For what purposes (working with text documents or surfing the Internet wastes much less charge than watching movies or working with resource-intensive programs);
4. Voltage. This category will be very necessary, because if the laptop and the battery will not match the characteristic, then it will badly affect your laptop;
5. Battery capacity. On this given characteristic depends on the autonomous work of your laptop, the higher it will be, the more the laptop will have to work. As a rule, the volumes are denoted as mAh, Ah, mAh if it is amps or miles amps, but sometimes you can find measurements in watts and hours Wh, Wh.

Types of batteries in laptops

Each type of battery has a different maximum charge, meaning they affect battery life in their own way. When buying a battery, you will not only need to pay attention to the model, but also to the type of battery, which depends on a number of properties of the laptop battery. Different types of battery differ in their work and the way they are charged, so it is prohibited to swap them with each other.

• Li-ion (lithium-ion batteries).
• NiCad (Nickel-Cadmium) batteries.
• NiMh (Nickel-metal hydride batteries).

Li-ion. These batteries have a large amount of charge, with little weight. They also do not have the problem of "memory effect". But they also have a small disadvantage. First, the price of such batteries is high, and secondly they will be very sensitive to temperature. If you use this battery in the winter outside, or overheat the laptop, then the battery begins to consume more energy. The lithium-ion battery is designed for 300-600 full charge and discharge cycles.

NiCad batteries. Newer laptop models are no longer available with this type of battery. Typically, these batteries for laptops can be found if you need to replace a ruined battery in an old laptop. The simplest laptops, that is, cheap, they all use a nickel-cadmium battery. You may have a question, why this type is not used nowadays? Experts say that the battery contains cadmium which is highly toxic. Therefore, there are difficulties with battery disposal. With the general desire for environmental friendliness, nickel-cadmium technology is losing its position.

NiMh batteries. This type also has a fairly high capacity, as a result of your laptop lasts longer, they are slightly smaller than NiCd. No heavy metals are used in their manufacture so they are considered the most environmentally friendly.

How to make the right choice?

First you will need to take the battery out of the laptop, and read the inscriptions on its case. The first important characteristic is the capacity. It is usually labeled as mAh - for example, 5000mAh, 7400mAh, 9800mAh, etc. If you want more autonomy, choose a higher-capacity battery.

Each battery identifies itself by the code given to it by the manufacturer. There is a part number (p/n) or model inscription on the case. This code can be a combination of numbers and letters. You can also use the help of sites that allow you to search for a battery by part number or model of the laptop, then remember the battery model and already go to the online store.

Your laptop model (usually found on the back cover) allows you to quickly find compatible batteries. Based on these parameters it will not be difficult to find a great battery that matches your laptop.

Almost all modern laptops use Lithium-ion batteries with a voltage from 3.0V (when the battery is empty), to 15.4V (when fully charged). In the technical parameters of the battery write the average nominal voltage of one cell of the lithium ion battery 3.7-3.8V. Each laptop battery consists of a pair of these cells. And each one of these cells will deliver a voltage of 3.7V, and the total when the battery cells are connected in series adds up to the nominal voltage of the battery as a whole. Parallel connection of the battery cells determines the capacity of the battery.

The main thing is not to exceed the allowable value, which is 0.5V. Therefore, 7.2V and 7.6V or 14.4V and 14.8V batteries are compatible. Batteries are equipped with a voltage correction module, but it must not be overloaded.

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