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The use of laptops is closely related to battery and laptop chargers . With the popularization of computer notebooks, more and more people begin to use mobile laptops, then how do we properly use notebook chargers?

The first step, first of all the general smart mobile notebook has its own compatible charger, we must complement the use, pay attention to the size of the notebook charging connector and shape.

The second step, the use of mobile smart laptop charger, do not and other computer or notebook power charger intersection or use of crossover, easily lead to laptop power supply current instability, causing some damage to the laptop or loss

The third step, the use of smart mobile notebook charger, be sure to ensure that the external current and voltage stability, not in the unstable or small voltage or larger, insert the laptop battery and external power supply, so very tolerant Cause damage to the laptop, if often in the external unstable current and voltage charging using a laptop charger, you can access a power regulator to use.

The fourth step, when using a laptop in peacetime, if the notebook's mobile power is normal and can support without a short charge, the normal use of the battery, you can use the laptop, view the mobile battery, the mobile battery Unplug, use the laptop battery alone to work.

The fifth step in the mobile notebook for a long time, or shut down or suspended, be sure to unplug the laptop battery charger, do not plug in the computer for a long time, so as to avoid damage to the laptop

The sixth step, pay attention to electricity safety, do not easily touch the laptop charger plug part or part of the charge in the process of using the notebook charger, especially when the children themselves alone at home.

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（1）Whether the new laptop battery needs to be activated

In fact, the activation of the battery in the factory should have been completed, the laptop battery shipped with a little power is to avoid the natural loss of damage to the battery. The activation of the battery should be carried out in the absence of protection circuit, the lithium battery itself with a protection circuit, the design of the circuit block is designed to avoid excessive charge and discharge of the battery, the general battery is fully charged, the charge indicator Out of the moment, the battery is not charging, then this time you plug in the charger then charging it does not make any sense. We can see from the status of the battery whether the battery is charging, there is a simple way to determine whether the battery is charging, the battery will emit a certain amount of heat when charging, when the battery is full after one hour (charger Power plug not unplugged), you go to touch the battery, this time you will find the battery is at normal temperature, it is because the battery is not charging at this time, of course, there will be no heat generated.

（2）How to charge properly

Regardless of the notebook using lithium batteries or nickel-metal hydride batteries, these batteries have a memory effect, nickel-metal hydride batteries have a significant memory effect, lithium also memory effect, but its memory effect relative to NiMH smaller. We have heard of the so-called lithium battery has no memory effect, it is only some js exaggerated, the purpose is to guide consumers in the wrong. Since the battery lithium has a memory effect, then when charging should try to run out of electricity and then recharge, do not just want to go to recharge when charging, so although easy to use, but will shorten the battery life. However, we also have absolutely no need to wait for electricity to recharge completely, which is too troublesome. Although this battery is protected under the protection of the circuit will not not damage the battery, but there is nothing particularly necessary. In fact, when the charge is less than 3% of the charge on it, the memory effect is still an objective reality, but compared to the natural loss, it is nothing.

(3) the need to unplug the battery when using an external power supply

In fact, it depends on when you use an external power supply is not needed to charge the battery, the number of battery charging is directly related to the life, under normal circumstances, the number of lithium battery charge and discharge is fixed, the number of charges is generally only about 500 times, up to No more than 800 times. Each time we charge the battery, correspondingly, it reduces the number of recharging times. However, many notebook manufacturers have taken into account the vulnerability of the battery, an increase of the battery protection technology, does not meet certain conditions will not be charged. Even so, when you use the computer for a long time using an external power supply is also recommended that you unplug the battery, because high temperature is also one of the battery's nemesis, the laptop will produce a certain amount of heat when used, which is very harmful to the battery. Of course, if you are not sure about your own battery, I still recommend that you unplug your laptop battery and then use an external power supply.

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Your notebook is your go-to device for everything from work to social networking, so you should pick the right one that matches your needs and budget.

Battery life is one of the biggest factors that consumers would take into consideration when purchasing. Here are the notebooks with the great battery life and high perfomance  in 2017.

Dell XPS 13

Pros: Extremely light; Great port selection; Nearly-bezel-free display/Great battery life

Cons: Awkward webcam placement

The highly rated Dell XPS 13 is considered the lead challenger to the MacBook Pro. The XPS 13 features a virtually borderless 13.3 inch Infinity Edge display, which is available with touch.

Dell also claims the laptop offers up to 22 hours of battery life, although in practice this is more like 12 to 13 hours when streaming video. It also is one of the first laptops to feature 8th generation Intel processors for an even more power.

Add to that an Intel 7th Gen Core i3, i5 or i7 CPU, a speedy PCIe SSD and plenty of ports and you have the best consumer Ultrabook around. A Killer Wi-Fi card and Thunderbolt 3 charging round out this impressive package

LenovoThinkPad T470

Pros: Best-in-class keyboard; Speedy PCIe SSD;Thunderbolt 3 charging;Epic battery life

Cons:Dim screen; Tinny sound

If you want a truly fantastic keyboard, durable chassis and strong performance, look no further than the ThinkPad T470. The T470 makes room for an optional extended battery that gives this 14-inch laptop over 17 hours of endurance (with its non-touch display). You can charge the laptop over a proprietary ThinkPad connector or via its Thunderbolt 3 port, which allows you to juice the laptop and output to multiple monitors over a single wire..

Asus

Pros: Extremely durable; Runs Android apps; Great keyboard

Cons: Modest performance; Weak cameras

This 11.6 inch, education-focused Chromebook can endure 3.9-foot drops onto concrete and over 11 hours of continuous use. This indestructible 2-in-1 also features a fantastic, tactile keyboard and the ability to run Android apps within Google's browser-centric OS

 Acer 

Pros: Fantastic display; Wide array of ports
Cons: Heavy; Dim screen
One of the best bargains in tech, the Acer Aspire E 15 E5-575-57D4 (say that three times fast) has really strong specs for the money and even stronger battery life.
At 4.97 pounds and 1.2-inches thick, the E 15 isn't a laptop you'll want to lug around in a bag all day, but its 10 hours and 59 minutes of battery life make it a great choice for carrying around the house. A built-in DVD burner and a wide selection of ports, including a USB Type-C connector, make this a very versatile computer.

What screen size do you want?

No Preference

10 to 12 inches:  The thinnest and lightest notebooks around have 10 to 12-inch screens. However, you may sacrifice keyboard size for portability. Many laptops in this class double as tablets.

13 to 14 inches:  Provides the best balance of portability and usability. Laptops with 13- or 14-inch screens usually weigh between 3 and 4.5 pounds.

15 inches:  The most popular size, 15-inch laptops are the least expensive and provide plenty of desktop real estate. While most 15-inchers are easy to take from room to room, some are on the bulky side.

17 to 18 inches:  If your laptop stays on your desk all day, a 17- or 18-inch system will likely provide everything you need for work and play. Many gaming notebooks are in this size category.

1, choose a good brand:

The principle is to choose the same type of brand, if not, it can only find other brands. Now many of the laptop online power adapter sold are cut corners of substandard products, normal use should be no problem, in the event of an accident will burn your laptop, save dozens of pieces but burn thousands of notebook worth the candle. (Cut corners, the common practice of chaos standard power, such as the actual only 19V3.42A, but the standard 19V4.74A, this will lead to charging is very slow, or even damage the battery and laptop, there are some protection removed, this more horrible, there Accidentally burn the laptop.)

I suggest you ample funds, you can buy a professional brand notebook power adapter (that is, only the professional laptop charger brand, not what the power to do that kind of professional-brand products only Will cause damage to the battery and laptop, but also advanced protection circuit.) Such as outeccbattery and so on.

2, distinguish clearly use:

Home and office notebook power adapter used to sell a home to buy (AC), the car with a laptop power adapter, buy a car, you want to use the aircraft on the basis of the car On the plane with a plane on it. At home, in the car, in the airplane, all want to take care of, buy a combo, or triple. However, if you do not want to have multiple weights in your computer bag, you can put one at home, one in the car and one in your office so that you do not have to bring it in, plug it in and plug it in, .

3, distinguish between voltage, current and interface

Look at the original laptop which brand, the original charger behind the label is written on the number of V, how many A (generally written in OUTPUT behind), the charger connector is round or square, or porous, Do my heart probably a few, will not buy the wrong, or even fooled.

Adapter output voltage and laptops are the best voltage required for the same, if different, then as close as possible laptop voltage, control within ± 5% error, this is because the laptop inside the regulator circuit generally have margin design , When the input voltage changes within a certain range, can work normally and stability; beyond this range, the voltage is too low, the computer may not work even unstable lighting machine; voltage is too high, the computer may burn the regulator circuit. Such as an Acer notebook, which requires 15V, 3.36A input, but with the IBM 16V, 3.36A adapter can be used with it properly.

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