How To Maintain Laptop Batteries, And Correct Maintenance Methods of Notebook Battery

How To Maintain Laptop Batteries, And Correct Maintenance Methods of Notebook Battery

With the development of science and technology, the popularization rate of computers is already quite high. It can be said that everyone has a computer, so everyone must cherish their own computers and think of many ways to maintain them. The laptop computer is also very popular in recent years. When it comes to laptop maintenance, besides daily cleaning and dust removal, good usage habits, it is also necessary to do well in heat dissipation. With the development of notebook related technologies, the performance of each hardware part has made great progress, but there is only one hardware which has not made any significant breakthrough so far and has become the shortboard of the whole machine. This hardware is a laptop battery. Batteries are very important to the user’s experience. If a battery that has been in use for more than one year is not well maintained during this period, the user fails to pay attention to the battery power of the laptop battery in time without inserting the adapter. The power is turned off due to the battery power depletion. The data we are doing are not kept in time and the loss is very serious. Therefore, we will elaborate on the maintenance of laptop batteries:

As far as laptop batteries commonly used in the market are concerned, most batteries use lithium-ion cell, so what are lithium-ion batteries? The lithium-ion battery is a kind of rechargeable battery, which mainly relies on the movement of lithium ions between the positive and negative electrodes to work. Li+ is intercalated and deintercalated back and forth between the two electrodes in the process of charging and discharging: Li+ is deintercalated from the positive electrode and intercalated into the negative electrode through the electrolyte when charging the battery, and the negative electrode is in a lithium-rich state; The opposite is true when discharging. Batteries generally use materials containing lithium as electrodes. It is the representative of modern high-performance batteries.

Why did lithium-ion batteries replace earlier nickel-hydrogen and nickel-chromium batteries? Because the memory ability of lithium-ion batteries is not very obvious, they can be charged and discharged at any time. However, even if the memory of lithium-ion batteries is not obvious, users’ random charging and discharging will also affect the life of the batteries themselves. According to the current authoritative test results, the life of ordinary lithium-ion batteries is about 1000 times of charging and discharging. Therefore, if there is no special demand, users should try to reduce the battery charge and discharge times.

Mistakes in Maintenance of Notebook Lithium Batteries:

Battery maintenance has always been a hot topic for notebook users, but there are many misunderstandings in the maintenance process, which come from two aspects in the final analysis. One is that the thinking has not kept pace with the times (the change from nickel-hydrogen battery to lithium battery) and the other is from mobile phones. Because mobile phones are the devices that most users first come into contact with using rechargeable batteries, they will naturally extend some habits of mobile phone charging to notebook computers, which makes many users fall into misunderstandings. Next, we will briefly talk about the existing misunderstandings and the correct views and practices.

Mistakes 1: The first charge must last 12 hours.

I believe many users will hear dealers tell you how to maintain the battery when they buy a laptop. The first charge should take 12 hours, otherwise, it will affect the battery effect and so on. However, I think this is not very appropriate, because the current laptop generally use lithium-ion batteries, and when the lithium batteries of laptops are fully charged, the charging current of most laptops will be automatically cut off. Even if you continue charging for hundreds of hours, the state will not change. On the contrary, if you charge for too long, the battery life will be affected. As far as the current battery charging time is concerned, the average computer can be fully charged in 6 hours at the slowest, and the remaining “charging” is only a waste of time.

Mistakes 2: The notebook needs to be recharged three times before it can be used normally.

This phenomenon is not necessary unless the battery of the product purchased by the user is more than one year or even longer because usually the cell of the laptop battery has been activated and a part of the electric quantity has been stored for the user to test. Therefore, when the user purchases the notebook, the battery has already been activated, so doing three more charging and discharging processes is just unnecessarily increasing the battery loss.

Mistakes 3: The battery needs to be calibrated regularly and fully charged and discharged in half a month or one month.

This method is very suitable for the old Ni-MH battery and must be done because the old battery has a strong memory effect, which can ensure the service life of the battery. However, for lithium-ion batteries, such cycles are a bit too frequent. Although the memory effect of lithium-ion batteries is not completely removed, it has greatly weakened the memory effect. If you use the batteries frequently, you should discharge the batteries to a relatively low charge (about 10-15%) and recharge them. However, if the discharge is too thorough (0-1%), it will cause great damage to the lithium batteries. Therefore, it is generally enough to do this every 2 months. If you seldom use batteries, you only need to do this every 3 months.

Mistakes 4: Correcting Can Improve Battery Capacity

The so-called laptop battery correction means that when the actual capacity of the battery is different from the recorded capacity value in the control circuit, a deep charge and discharge operation is carried out on the battery so that the control circuit refreshes the record to make it close to the actual value of the battery capacity. Such operation can let the user see the actual capacity of the battery, and cannot be regarded as capacity enhancement. The key factor is the actual capacity of the battery because if the actual capacity of your battery is higher than the capacity recorded in the control circuit, The result of the correction is that the capacity of the battery appears to have increased. On the contrary, when the actual capacity of the battery is lower than the capacity recorded in the control circuit, the result of the correction is that the capacity of the battery appears to have decreased. This is why many people have been arguing about the correction effect. Therefore, we hope that users will not be deceived by these two data, because the correction is to show the actual capacity of the battery and eliminate the deviation between the battery and the control circuit. As to whether the displayed capacity will increase or decrease, this is the state of the battery itself, not the result of your correction.

Mistakes 5: Universal Adapters Can Be Used

Notebook consumes several times more power than mobile phones. If a mobile phone has only 8 hours of battery life, it can only be said that the battery of the mobile phone is relatively poor. For a notebook, the endurance of 8 hours is quite excellent. In addition, while charging the notebook, the adapter of the notebook also bears the power supply requirements for the notebook. Therefore, the notebook computer must use a special adapter in actual use. The universal adapter mentioned by the staff at the maintenance point is only for those users who are greedy for cheap. We do not recommend users to purchase it because the current, voltage and even power interface of each notebook computer are different. Although there are some universal adapters in the market and the price is very low, many problems will occur in use, such as the adapter interface is the same, but the voltage and current are lower than the rated value by the computer, the battery may not be able to obtain sufficient charging current when the machine is working at full speed, which is very harmful to the battery. On the other hand, if the voltage and current are too much lower than the rated value, it may not be possible to start the machine at all, or it may be possible to start the machine but not to charge the battery, so we suggest that the user must buy a product with matching specifications instead of a universal adapter when selecting the power adapter.

Mistakes 6: The battery needs to be fully charged or fully discharged before storage.

Either full charge or full discharge storage is not a good method to store batteries, because long-term storage after full discharge will lead to cell deactivation and eventually the battery cannot be recharged. Full charge storage of batteries will not kill the battery, but it has great potential safety hazards, so we do not recommend this. If you want to save the battery, it is best to discharge the battery to about 40% of the electricity quantity and then save it. And the humid and high-temperature environment is very bad for lithium batteries, so it should be stored in a cool and dry place, but the temperature should not be too low, otherwise, the capacity will be greatly reduced, and about 20 degrees Celsius is the ideal storage temperature. Let’s look at a table: the percentage is the percentage of the current power state relative to the initial value.

Storage temperature      40% state of charge          100% state of charge

0 degrees                        98% (one year later)        94% (one year later)

25 degrees                      96% (one year later)        80% (one year later)

40 degrees                      85% (one year later)        65% (one year later)

60 degrees                      75% (one year later)        60% (three months later)

Mistakes 7: Change New Cells When Battery Discard

This kind of phenomenon generally occurs in enthusiasts, who are very familiar with notebook computers and accessories, but it is this practice that leads to the complete scrapping of batteries. Because notebook computer manufacturers know that some people will do so, they will set up a self-locking function before shipping from the factory. Once the battery cell is separated from the control circuit, the circuit will enter a self-locking state, only by using specific means can it be unlocked. Before this, the control circuit will not work, that is to say, the battery is equivalent to scrapping, and the cell of notebook batteries cannot be replaced at will. If you have to replace the battery cell, please go to a professional after-sales maintenance point for replacement.

Mistakes 8: Remove the battery when inserting the adapter to prevent repeated charging and discharging.

This kind of phenomenon is very common, many users have done it, but we think it is completely unnecessary. First of all, there is a characteristic of notebook power circuit control in the market at present, that is, the battery will not be charged until its charge drops to 90% or 95%, and it usually takes 2-4 weeks for the battery to discharge naturally to such charge, battery capacity can only be maintained by fully charging and discharging after it has been idle for a long time, and then the battery should be fully charged and discharged instead of being directly charged after being idle.  Secondly, we believe that the damage caused by recharging and discharging the battery is less than that caused by the decline of battery power caused by long-term non-use of the battery. Finally, remind everyone, if the battery is not plugged in when the power is suddenly cut off, it is likely to cause unnecessary damage to your laptop and some important data cannot be recovered.

Correct Maintenance Methods of Laptop Battery

  1. If the user wants to make the laptop battery live longer, it needs to have a good start. When we buy the laptop, the battery should have some residual power, which is used when the user checks the laptop (if the user finds that the battery is fully charged, then it is proved that the laptop has been used). At this time, the external adapter should not be used, and the remaining power in the battery should be used up until the battery is turned off, and then the adapter should be plugged in to charge.
  1. Don’t charge the battery in thunderstorm days: it often thunders in rainy days. The instantaneous current impact caused by lightning strikes is extremely unfavorable to the battery. In addition, a stable voltage is also particularly important in the use of laptop batteries. Users should try to avoid connecting the notebook power adapter and high-power electrical appliances (such as air conditioner, refrigerator and washing machine) to the same power outlet.
  2. Regular battery maintenance: If you can’t make sure to use up the battery power every time before recharging, you should charge and discharge the battery at least once a month (i.e. fully discharge and recharge after full charge), or regularly use the battery calibration function built-in BIOS to maintenance, which is very beneficial to prolong the service life of the battery.
  3. If the battery is not used for a long time, the battery needs to be charged to more than 50% of the electric quantity for storage, which is beneficial to the subsequent use of the battery. In addition, we must pay attention to the indoor temperature during the storage process, too high or too low temperature also has a greater impact on the battery, the best storage temperature is about 20 degrees.