How to protect you battery

Check carefully look to see if it dell laptop battery had not been demolished or is the collision before, whether the cracking of the Department, if we find this kind of problem, regardless of its price is not cheap to buy more. However, only some minor scratches, you can consider that this is because due to mobility needs, some small friction is inevitable. And the purchase of second-hand laptop depends on its thickness, size, weight, and similar comparison of second-hand laptop, take care who is who, according to their actual needs.

Step two: look closely and check your LCD screen

This is very important. As we all know, LCD is the most expensive notebook accessory components, accounting for the cost of the whole machine 20% ~ 35%, so choose should pay special attention to: 1, whether the injury marks on the screen because there are traces of the machine length time use, the refraction of light can seriously damage people's eyesight, believe it or move back to an impact of the machine vision laptop battery too worthwhile. 2, carefully observe the display size and display, the display screen size and price effects and linking to consider, of course, can be used to keep the prices down. 3, detailed identification of display colors. Observation of color apart from monitoring screen is 16 colors, 256 colors or 16, and 24-bit True Color True Color outside, but also placed at an angle both vertically and horizontally, in its observations, if the context in which that could be accurately regardless of the screen to see the color, can determine the true color. Otherwise, if we can only observe its front in order to identify the color, then it is pseudo-color. Can be hailed in the business, where a high-priced high-quality liquid crystal displays, and you want to buy it in a notebook next to the contrast in the same interface to their brightness, contrast and response speed, visibility and other parameters of the pros and cons. 4, note that monitor the performance and brightness of the delay. In dell Inspiron E1705 battery the selection of LCD monitors, the main fact is that it should be the length of the delay, if the delay time is too long, the eyes will feel tired. At the same time the brightness is an LCD display weakness, universal-type LCD's brightness will generally be in 200cd / ㎡ (lumens), below this brightness display on the desirable. There is not the time to see the brightness of a single look, look to tie in with the contrast adjustment. Some LCD monitors have the same brightness no matter how stressed a result, increase the contrast a very dazzling look very uncomfortable. In short in order to prevail eyes looked pretty comfortable. 5, pay attention to LCD screens dead pixels. The most common is the white point and black point, we use the following when buying a simple approach to identify: the identification of black spots in the general approach is to tune into the background of the entire screen black and white, then black spots on the general escape your eyes; white spots are just the opposite will be dell Inspiron 6000 battery (dell 6000 battery) the screen background to tune into the black, white spots at this time it will have Xianchuyuanxing啦! Nevertheless, except for white spots and black spots, and sometimes there are other color points, this time consumers were established three primary colors red, yellow, blue-screen background to identify a simple click.

Step Three: careful identification and testing of notebook components

3. Power is not fully depleted before (ie electricity in the 5-100%), not to recharge the battery, otherwise it will shorten the battery life.

When the power is 5 ~ 95% battery should be used, so the use of AC power adapter will charge the battery (charging side by side state).

4. When the power is 96 ~ 100% or the battery removed from the machine can use the AC power adapter switched on, use the AC power adapter AC power adapter when you please put the DC output plug on the plug into the machine, and then AC power plug to plug it into 220V ~ socket; removed when the AC power adapter should be first, and then unplug the AC power plug from the machine, unplug the AC power adapter DC output plug. Otherwise, they might damage your equipment.

Using the AC power adapter, when the AC power plug to plug it into 220V ~ socket, while the power status indicator on the machine yet, gave the former (Note: During this period of about 5 seconds time), please press the power button to turn; dell Inspiron 8200 battery shutdown or go to sleep, in addition to green power status indicator lights have been extinguished all the other things, make a timely manner from 220V ~ unplug the AC power outlet plug, AC power plug pulled out after about 5 seconds, the green power status indicator light turns off ; (if necessary, may from time to unplug from the machine on AC power adapter's DC output plug, this time the battery will discharge through the AC power adapter reverse.) Otherwise the battery will overcharge and damage caused by the battery. Off state due to AC power adapter is still non-unloaded state, it will recharge the battery.

If the suspension of work in order to wait for the machine to enter, or suspend state, not from 220V ~ socket unplug the AC power plug; so when the machines still have the power to maintain. (Not recommended for a long time to make the dell Inspiron 8000 battery machine enters a wait or suspend state, in order to care for your machine.)

Double-check notebook CPU, hard drives, memory and other components, buy the best you can when you open the machine to go and see. In addition, we must guard against the use of second-hand books of the profiteers CPU desktop replacement notebook CPU despicable practice. Since the same frequency of the CPU general users will not notice, but the use of desktop CPU and notebook CPU is totally different, due to heat different issues, making CPU issue comes in the notebook can not shed heat, resulting in system does not stable. So in the process of buying as much as possible on-site inspection request to the CPU. For hard drives, due to visual observation can not understand the pros and cons of the hard disk, and only be detected by means of software, testing dell Inspiron 9300 battery software available DM, NORTON and so on, through the DM, NORTON scanned, DM with a longer time, NORTON shorter time-consuming. Scanning process must be smooth uniform, if the cluster region which, when used too long, stating that the cluster region there must be problems. With regard to memory, second-hand laptop memory from 32M to 256M are, we should try to select more than 64M of memory, preferably more than 128M. Memory buy when to add a little, because some of the notebook computer's memory is rather special, and now long discontinued and can not reprovision. In addition, other houses, such as graphics card, we should also see a clear face to face.

Step four: Check the interface of second-hand laptop

Because there are no complete interface is very necessary. In today's notebook computers, with the popularization and application of external memory devices, USB interface, has become both desktop and notebook PCs an essential dell Inspiron 9400 battery device, USB port is very important to an interface. Therefore, the best to buy second-hand notebook computers have a USB interface. In addition, the infrared emission and reception capabilities of a laptop is now an essential feature. And, when buying second-hand laptop, there is an important condition is that the purchase of the machine depends on its power supply. External power supply is a must have, no battery is totally unacceptable and therefore also look at the main power supply is to see the battery is good or bad, that is, the length of battery usage time. Pairs of second-hand goods, the nickel-metal hydride batteries generally within one to two years can be used for one hour, lithium-ion batteries can be used for two hours, which is a basic requirement, otherwise we do not consider them.

Step five: Check peripheral status

View keyboard, mouse, CD-ROM, floppy drive, modem, etc. is available and easy to use. The last in the secondary market to see a second-hand laptop keyboard shiny, wear very serious, so no need to buy, and for the keyboard is necessary to block dell 310-6321 battery hundreds of pieces. At the same time to open a word processing software, to try every key on the keyboard is available, the mouse is flexible. Built-in floppy, CD-ROM, modem, etc. is available, please try one by one, as long as the equipment inside the computer can not be undetected!

Step six: to fight for second-hand merchant service

This should be the last step of the. I remember back books all the accessories (batteries, power cord, etc.), graphics card, sound card driver for communication should be, but most sellers say no, the driver does not matter if there is no, you can to the laptop manufacturers Web site, download the complete set of model computer device drivers. Finally, we illustrate a specially important matter, second-hand notebook dell 310-6322 battery, computers generally have two to three months limited warranty (repair) period, the limited warranty must Dealers (Amendment) written on the invoice period, and during this period of your second-hand Laptop conducted several test machines, find all the hidden fight, otherwise, you think about repair of such computer hardware failure, especially in trouble, and we must take account of future maintenance are convenient, if the can not buy parts, the machine is cheaper not to, because the internal space due to a small notebook, spare parts shortages, there are compatibility issues and other reasons the possibility of upgrading notebook computer is almost dell D5318 battery zero.