How to maintain the notebook battery

Notebook battery can be said to be the most important power supply for notebook computers. Without battery to provide energy, it is impossible to complete the special requirements of mobile office. Then the notebook in our hands can only be a mobile PC at most. The maintenance and use skills of notebook batteries have also become the biggest headache for most consumers. At present, there are always different opinions about the use and maintenance of notebook batteries. Based on my own experience and consulting an engineer of Taiwan Province Notebook Brand Customer Service Center, the author made a brief introduction to the use and maintenance of the battery, and will further discuss the maintenance of the notebook battery, and make some corrections to some misunderstandings in daily use, hoping to help all friends. However, the level is limited, and if there are any omissions in the article, I hope all friends will be honest!

A. After purchasing the notebook, charge the battery continuously for more than three times 12 hours to prevent "memory effect".

Let me ask you an idiot question first: Do all your friends have cell phones? Many friends will consciously or unconsciously do one thing according to the reminder of the merchants or others when using the mobile phone, that is, charge the mobile phone for the first three times 12 hour after buying it, and then recharge it when it is used up. The reason is because friends are worried that their mobile phone batteries will have a "memory effect", that is, the battery will automatically maintain this specific tendency after a long working cycle. Therefore, some people say that if you start to use the battery every time it is only 50% charged, the memory effect of the battery is that it will "not be charged" when it is charged to 50% next time. In fact, this "memory effect" refers to nickel-cadmium and nickel-hydrogen batteries. For lithium-ion batteries of notebook computers, the memory effect is almost negligible.

Notebook battery

With the gradual improvement of manufacturing technology, the charging characteristics of lithium-ion batteries, such as constant current, control the deep charging time to 4 hours. There is no need to copy the charging rules of mobile phone batteries to notebook batteries. The notebook battery will be recharged when it is dead, and it will be deeply discharged every two weeks or a month. This term sounds a bit scary. In fact, it is to use batteries to supply power, and then directly use the computer to automatically shut down when there is no power. However, the number of deep discharges should not be over-frequency.

B. When using the AC adapter, take out the battery first to avoid "charging" the battery.

At present, the lithium-ion battery used in notebooks on the market can complete the charging and discharging process for 300 to 600 times (data shows that it can be more). We can do the math ourselves. The service life of Centrino battery sold in the market is generally 5-6 hours, and the service life of Ben4 battery is 3 hours. Then the lithium-ion battery can be charged and discharged 600 times, and how long our notebook battery can last can be calculated. When using the AC adapter, some friends are worried that if the battery has a lot of remaining power, it will start charging because of plugging in the AC adapter, resulting in the waste of the so-called "charging times" of the battery. In fact, this kind of worry is unnecessary, because the power in the notebook battery can't be 100%, so using the AC adapter will definitely complete the charging. However, at present, many manufacturers have designed battery protection measures for notebook computers. For example, IBM's notebook will only be charged if the power is lower than 95%, but it is not absolute. Some notebook manufacturers who have no design ability and rely entirely on OEM may be weak in this respect. If you really care about your battery, you might as well take it off!

After the laptop battery exploded,

The possibility of battery explosion is very small. However, it is not absolutely not. There is a lithium battery in the lithium ion battery, and there is a control circuit board between them to complete and manage the charging and discharging. If some functions of this control circuit lose their original sensitivity or fail directly, the current cannot be effectively controlled, and the internal battery temperature rises, leading to an explosion. Or the battery cell may explode due to short circuit. Fortunately, the notebook products on the market now all adopt foreign high-quality batteries or directly buy other people's batteries, and the quality is better. Some domestic manufacturers of lithium-ion batteries also import foreign batteries and then manufacture them themselves. So it's still an old saying, when choosing a notebook, try to prepare more budgets to consider the products of big manufacturers, that's right.

C. The service life of the battery has not reached the official standard, so there must be something wrong with the battery.

All friends who buy notebooks will worry about this problem. Indeed, with the birth of Centrino technology, it is possible for notebook batteries to get longer standby time. Even some manufacturers' laptops are marked with 10 hour "battery usage standard". In fact, this is just an advertisement that attracts consumers' attention. At present, the batteries of most notebook computers can't meet the so-called "official standards". Maybe friends still remember ASUS's patented power-saving technology, Power 4 Gear+(and the upgraded version of Power 4 Gear+), claiming that it can extend the battery life of M6 series to 5.5 hours, but the sales staff of ASUS told me that the battery life of this notebook is only about 3 hours. Of course, after all, the manufacturing process problems existing in battery life are not something that our consumers can solve. So, don't be surprised when the battery life can't reach the "official battery life standard", because it's normal not to reach that long life (if your notebook battery life reaches the official standard, please don't pat the brick, I mean most notebooks).

If a friend's battery standby time does not reach the "official battery use standard", then we can still extend it through some ways:

Under the standard external environment of 1 and 25℃~40℃, the use of lithium-ion batteries can reach the best state. If the temperature is too high, not only will the running speed of the notebook computer slow down or even crash, but the battery will also affect its efficiency in such an environment. So try to use the notebook in an indoor environment.

2. Disable devices that are not commonly used. Usually, when battery power is used, it is best to disable all temporarily unnecessary interfaces, such as wireless network card, printer interface, infrared data association, 1394 firewire interface, etc. Otherwise, a lot of battery power will be wasted. The specific method is to find the device you want to disable in Control Panel-System-Hardware-Device Manager, and then click "Disable". After stopping using it, the use effect is still obvious, which can save a lot of electricity.

3. Reduce the power consumption of internal devices. Higher and higher CPU frequency and high-speed hard disk will bring a lot of energy consumption and increase heat dissipation. Therefore, if there is no special requirement, it is best to use internal system or third-party software to control the speed of hard disk, and don't open too many windows and programs to avoid CPU overload. This can not only reduce battery energy consumption, but also reduce heat dissipation. In the season when the "autumn tiger" still exists, it is still beneficial to do so.

D, boot charging is very harmful to the notebook battery.

Is it harmful to start charging? Once, a buddy of mine saw my mobile phone being turned on and charged, and then he came over and said, Wow! How dare you start charging? You are not afraid of battery explosion! ? Although it is a joke, it reflects the misunderstanding of many friends. In terms of notebooks, in the past, some models were designed to be powered by batteries, so even if an AC adapter is plugged in, notebooks will still be powered by batteries, which is the phenomenon of "no charging". Today's notebooks have no such dangerous design. When the AC adapters are plugged in, they will immediately switch to the external power supply and start charging the battery. So there is no need to turn off the battery now.

E. If the battery is not used for a long time, put it aside.

This problem is often ignored by users. However, this problem is not small. The notebook engineer I talked to told me that many notebook manufacturers now advise users to control the remaining battery power at around 5%. This is to eliminate the passivation of the electrode, because the notebook battery has started to discharge slowly when it leaves the factory (the activation of the battery has been completed in the workshop, so we don't need to worry), and a notebook is likely to be bought by consumers six months after leaving the factory, and the battery has been discharged for six months. Here, I suggest to my friends that if you don't use the battery for a long time and use the AC adapter to supply power, it is best to leave 40%-50% of the remaining power for the notebook battery to discharge itself. If there is no electricity, let the battery discharge itself, which is easy to cause problems or even scrap. Think about it, self-discharge must be discharged, but there is no electricity in it. What do you want it to put? No problem is strange!

There is another problem that needs attention: if you don't need battery power for a long time but use an AC adapter to supply power (such as students), then put the battery in a dry and cool place, such as a cupboard. This method is to avoid wet environment. In addition, if you don't use the whole machine, it's best to place the battery and notebook separately. Do you believe that when we buy mobile phones and notebooks, we should pay attention to whether the merchants put the battery and the whole machine separately?

F, it crashed, but there was no way to pull the battery.

I have seen the phenomenon that some friends' machines can't be turned off normally or even illegally. Blame the great "dizzy death" system! Finally, Big Brother went directly to close his eyes and stomp his feet to dig the battery, only to hear the laptop scream and turn it off. In fact, this practice is very harmful, because the memory is electrified and works in standby state. If the battery is removed in a hurry, data loss is inevitable, not to mention taking the battery when the AC adapter is plugged in. This practice can only do harm and no good.