Maintenance and Correct Use of Laptop Batteries

Regarding the laptop battery, people often ask the editor, “Is it bad for the battery to keep the laptop plugged in?” Today, the editor will tell you about the laptop battery-related knowledge, and I hope it will be helpful to you.

Precautions

1. The lithium battery does not need to be recharged when it is out of power.
2. The first few charges do not need to be charged for 12 hours. After fully charged, there is no charging current even if the charging cable is not pulled out.
3. Users who often use batteries do not need to worry about plugging in and fully charged. But be careful with the temperature.
4. For users who basically don’t use batteries, they can occasionally unplug the power supply to use batteries.
5. The newly purchased battery should be charged and discharged three times before, that is, it should be fully charged after purchase and continue to charge for 3-4 hours without unplugging the power supply. Then use less than 20% of the remaining power, and repeat 3 times again.
6. The notebook must be equipped with battery maintenance software, and adjusted to the best battery maintenance in the software. That is, the battery power remains at about 50%.
7. Try to use an external power supply, if not necessary, do not use the battery alone.
8. Repeat the process of overcharging and discharging once every 1-2 months to maintain the battery.
9. When the notebook is not used for a long time, remove it and store it in a dry place.

What are the reasons that affect battery life?

Undervoltage, overvoltage, overcurrent, storage passivation, high and low temperature, charge and discharge aging are all important factors affecting battery life. The charge and discharge aging is mainly a problem of deep charge and discharge and high current charge and discharge, so in fact it is not so extreme undervoltage, overvoltage, and overcurrent. It is nothing more than a question of whether it is within or outside the threshold calibrated by the manufacturer. At present, the balance of these parameters for lithium battery manufacturers is generally based on ensuring the remaining 60-80% capacity after 300 deep charge and discharge cycles as the bottom line. When this bottom line is reached, they generally do not tend to pursue higher life, but turn to Pursue capacity and current. This is also consistent with the charging frequency of mainstream electronic products and the life cycle of the product itself.
FAQ analysis

1. Do not keep the notebook fully charged and plugged in?

Many people think that 100% full charge is “overcharge”. Personally, I think that although shallow charging (not fully charged) will also have a slight benefit to the lifespan, it is not worth the trouble and capacity loss. The real problem with 100% full power plug-in use is “storage passivation”, which is especially serious when it is fully charged. However, for users who charge and discharge the battery at least once a week, there is basically no need to worry about this problem. However, if it is plugged in and used with full power all year round, passivation will indeed occur. At the same time, high temperatures greatly accelerate the passivation and aging processes.
Therefore, for users who often use the battery once, the suggestion is, just use it like this, and the passivation will not be too obvious. But don’t use it on quilts, pillows and other things that will block the cooling holes, and don’t use it in hot places all the year round.

2. How many times have you charged the battery for 12 hours?

Many times when buying a computer, the salesperson tells the customer that the first few charges must be fully charged for 12-24 hours. Because of the existence of the battery charging chip, there will be no charging current after fully charged. A living person can’t be tied by a thread, just pull it out when it’s time to go, you can pull it out when it’s full, and you can pull it out if it’s not full.

3. Shut down and recharge after running out of power?

One of the most widely circulated sayings about the use of laptop batteries is that “it must be turned off and then recharged when it is out of power.” The professional point is to perform deep discharge every time. This statement is justified in the era of nickel-metal hydride batteries due to the existence of memory effects. But in the era of lithium batteries, it is best not to do this deliberately. The principle has also been seen before. In fact, there is no obvious and strict limit for deep discharge and over-discharge to under-voltage. Long-term deep storage and shallow storage may have a lifespan difference of several times at most. Of course, don’t be afraid to use the battery when you need it, after all, the manufacturer’s over-discharge protection will not seriously damage your battery. All in all, the suggestion for when to start charging is to charge when it is convenient to charge.