After notebook appears, the market has been the emergence of a thing called mobile PC, mobile PC is no difference in the appearance of an average laptop, but these mobile PC have not contain the battery, so it has become truly mobile PC. What accessories is a sign of notebook, processor, Mobile chipset, The best answer, it is a life-giving continuation of notebook — battery.
It’s difficult to imagine when you take a laptop, this laptop can not boot. In such cases, it is estimated that many people will say: “leave the power supply is impossible, it is also qualified to be called the laptop?”
Probably we always ignore laptop battery existence, because it is too trivial. But one day power suddenly outage, you will think “This laptop is really good” while you see the laptop still lit.
In fact, the laptop is your original laptop, but the battery play its true role, at this time, people feel that the laptop brings real convenience.
The above said so much nonsense, just to show the fact that there is no battery there is no laptop, also means leave the batteries, laptop lost its most salient feature – motion and continuity.
The history and misunderstanding about laptop battery
As we all know, one heavy thing come out of notebook is laptop battery, and also know that laptop batteries are lithium batteries. Why the history choose the lithium battery and abandoned the other?
The development of batteries, in fact, is the development of batteries materials. Let’s start with the nickel-metal hydride batteries.
In the early mobile phones and other electronic products, nickel-metal hydride battery is the main source of energy, of course, the notebook is also using nickel-metal hydride batteries in the early.
Speaking of nickel-metal hydride batteries, which is a proper charge of the nickel and hydrogen compound materials, the batteries which use of such products produced appear to be perfect in environmental protection, safety and duration.
However, with the development of the time, the power consumption of notebook itself is also increasing, nickel-metal hydride batteries beginning to reveal the biggest drawback: lose the balance between the volume-weight and capacity. A number of thin and light notebooks want to work need for block-nickel hydride batteries.
Therefore, the lithium batteries came into our eyes naturally, though lithium batteries have deficient respects. Lithium is a very active element, at high temperatures can easily cause an explosion, but the lithium batteries have one of the characteristics make people very excited, it was the same volume and the weight of the battery, capacity is higher several times than the nickel-hydrogen batteries.
People began to study lithium batteries, by adding not active factors to reduce the shortcomings of lithium, finally becoming ubiquitous lithium batteries today.
Laptop battery internal structure and working principle
Laptop battery’s internal structure
The internal structure of the laptop battery, in fact, it’s very simple, a shell, a working circuit and a battery pack.
In general, the battery joints are glued together by adhesive, so it is easy to see the location of adhesion, but, the interface position can not be opened with powerful tool.
After dismantling, we can see that over 95% are the batteries, and a circuit board.
The battery is mainly composed of shell, circuit board and batteries, it seems the most important part is the batteries, actually, the most important part is the circuit, because the process of using a battery are recorded in the circuit board. Maintenance of a battery, it is useless only replace the batteries , because the battery itself is good or bad, have always been recorded.
Dedicated laptop batteries and ordinary Ni-MH battery
So if we go to inquire the battery maintenance, you will find a word “unlock”, in fact, it means reset a circuit board locks recorded information about the battery, for example, number of charge cycles, and the use of time to re-set, together with all the wires for core mix, it will achieve the same with the new battery duration.
Laptop battery working principle
Generally, electric batteries of laptop batteries using a 10.8V or 11.1V, and a single cell can not meet the requirements of notebook PC batteries. Laptop batteries are based on so many single cells in series and parallel component of the battery pack ( use two sets of three after the parallel and in series to form a battery group). As we often see in the battery shell of 3300mAh, 4400mAh are refering to the capacity of the battery, which is indicative of the current on the battery discharge can be used for one hour, for example: 4400mAh lithium battery can be a 4400mA discharge current hours. Therefore, the bigger value is easy to prove it can work longer and better.Charge and discharge control and protection circuits are responsible for the battery charge and discharge control and protection, and it works principle is that, because the lithium battery will drop slightly in the charging process when very close to the full voltage.Therefore, this control circuit to detect this situation that equal to that the battery is already full, and protection circuit is also working to cut off power supply in order to prevent overcharging; the battery voltage is basically stable and unchanging when in discharging.The remaining battery power will have a sudden drop if it is rarely.When the control circuit detect this situation will hold the opinion that the battery power ran out and inform the protection circuit cut off power supply to prevent excessive discharge makes the battery life shorten.
Laptop lithium battery maintenance
From the above presentation, we know that lithium batteries is an hero now, so our maintenance also starting with the lithium battery. Lithium battery itself has many advantages, small size, relatively large capacity, which is already enough for manufacturers to accept. However, lithium itself is more active, and even cause an explosion if careless. Combined capacity of lithium batteries will gradually become smaller over time, and scrap finally. We still have a lot of ways to try to avoid the lithium battery accelerated aging.
The methods of avoiding to accelerate aging 1: Do not use laptop in high temperatures, pay attention to heat
Lithium batteries are very sensitive to temperature, if you find your battery life reduce significantly after using a year later,I think this is very normal.
Some people say that you can remove the battery. To remove the laptop battery is not a good way, if a power outage in using the computer, the computer will also shut down as not only cause losses to the users, but also unexpectedly damage on the laptop hardware.
Therefore, you must try to make the battery in a better cooling situations. Generally speaking, batteries are located in the bottom of the notebook, so put a base of heat sink is still a good choice.
The methods of avoiding to accelerate aging 2: Do not over-frequent fast-charge
There are many of my friends like to direct use of the battery, whether at home or outside, and alwayd consume fully. These friends may be the impact of nickel-metal hydride batteries, make the battery to fully charge and discharge maintained at high capacity. In fact, this is the differences between nickel-metal hydride batteries and lithium batteries, lithium batteries will accelerate aging by excessive depth of discharge and fast-charging. This is mainly because many manufacturers have applied fast-charging, put the battery full in 2 hours. This large load charge on the battery is not very good, but too much depth of discharge and fast Charge is no doubt lead worse. So, unless have to use the battery, it’s better to link an external power supply. In addition to protecting the battery, notebook performance uses external power supply better than simply using the battery, processor faster more than 40%.
Laptop battery repair
Finally, forced to talk about a problem is the battery repair, I believe many people already know by lithium battery dismantling and principles, the laptop battery lasted followed the principle of Barrel Theory. in general, low-battery appears very often because of problems with some batteries, as long as to replace the one on it. This treatment is relatively low maintenance costs, while the official is basically to replace the battery, the price very high, many businesses to maintenance batteries with lower prices for users.
This is a very dangerous action, first of all, lithium batteries is a very active, blast is not once or twice, to replace lithium batteries, it’s OK if the quality are excellent. But business who the maintenance of the battery don’t have too many security conscious, the use of the batteries are relatively common, even the old one.
compatible-with-the-new-battery
Laptop battery maintenance is not difficult in itself, that is, to change batteries or to unlock and reset the chip. But the specific laptop maintenance techniques involved are mainly the step of unlock, during the unlock, your laptop battery is stored inside will be reset, and even the number of charge is zero. This technique often be used to create new compatible battery by businesses.
In any case the maintenance, such practices are not responsible.Those repairs are not likely to be responsible for the battery problem after appear, so we still need to take advantage of yourself, the daily maintenance is more practical than medical treatment.
