laptop Battery World

Google DNS

While some free servers including the OpenDNS ones may be fast, in order to pay for their services they may redirect mistyped names to a search that includes sponsored links in VGP-BPS8, which is one way they help support the free service. This can be convenient to some people, but may also be a source of irritation to others.

The computer scientist earned a bachelor’s degree in linguistics at the University of Pennsylvania, a master’s in linguistics at the University of California Santa Cruz for VGP-BPS2A , and a PhD in computer science and engineering at the University of Michigan.Be sure to manually change the DNS servers for all your network interfaces (Airport, Ethernet, Bluetooth, VPN connections, etc.)

Some other free DNS services besides OpenDNS are “dnsadvantage” (156.154.70.1, 156.154.71.1), “ScrubIt” (67.138.54.100, 207.225.209.66), “Cisco” (64.102.255.44, 128.107.241.185), and “Level 3 Communications” (4.2.2.1 though 4.2.2.6).

The Google Public Option

Google has recently launched a DNS service of their own like Apple A1175, which like the OpenDNS project promises to be a highly optimized DNS service on a massive internet connection; however, unlike other free options Google does not implement filtering, blocking or redirecting for users. For instructions on what Google’s DNS service is and how to use it, check out the company’s instructions.

The Google DNS IP addresses are the following (easy to remember):

8.8.8.8
8.8.4.4

I have been using Google’s servers for the past day, and they work as advertised to Sony-VGP-BPS2. I do not see any performance difference between them and the OpenDNS server, but they do not redirect as the OpenDNS servers do. Personally I am indifferent to the redirecting features of DNS servers, as long as they perform well and do not hang on name resolution or incorrectly resolve accurately entered domain names. Both the OpenDNS and Google DNS servers are fast, and I recommend you use them if you are experiencing problems with web page loading troubles.

More info:

• edublogs.org
• quebecblogue.com
• blog.com

Hidden Ingredient In New, Greener Battery: A Virus

Scientists at MIT have developed a new, more environmentally and friendly way to make lithium batteries. Their approach employs an unusual component: genetically engineered viruses.

These new batteries have the same energy capacity as other lithium batteries of the same size and show potential to develop even more powerful batteries.MIT researcher Angela Belcher, who trained in biology, inorganic chemistry and electrical engineering, has long been interested in using natural biological processes to build better technology.A few years ago, Belcher began working on batteries. She wanted to find a material for electrodes ¡ª the positive and negatives ends of the battery ¡ª that would have the right electrical properties and could be assembled by a biological system o fPresario V3000 battery “We chose iron phosphate because lithium iron phosphate was already shown to be a good battery material,” says Belcher. “And also because biology has done a fantastic job with those elements.”

Iron and phosphate are already used by lots of biological systems. Red blood cells contain iron, and phosphate is an important ingredient in DNA.To make an electrode, Belcher and her team needed to assemble the iron and phosphate molecules into a scaffold. The biological system Belcher chose to do this was a virus.The viruses she used are long and skinny by nature. They attract iron and phosphate molecules along their length, which creates a stiff scaffolding. Belcher’s viruses can also hold tight to carbon nanotubes, whose length is thousands of times smaller than a pencil dot. Attaching a carbon nanotube to one end of the electrode allows electricity to flow in and out of the Dell GK479 battery. Belcher and her team published their work in the journal Science.

One advantage of using viruses is that if Belcher didn’t like any properties of the electrode, she just tweaked the DNA of the virus that was making it. In a sense, she was evolving her virus, which was evolving her electrode, so she could select the one that worked best of Acer Travelmate C300 battery Once you put enough of these virus-electrodes together, you can create a kind of biobattery that can power an LED light.”It’s fun, and it’s kind of cute, to power a green LED, but what about my laptop? What about my iPhone? What about my car?” says Belcher. “The power performance is there for us. Now it’s a matter of scale.”Achieving that scale should be doable, researchers say.

“It would be a different manufacturing process, but I think that there’s a very reasonable chance that the whole procedure would scale industrially,” says David Wright, a chemist at Vanderbilt University in Nashville.The new Dell gd761 battery already has properties that put it on a par with batteries being manufactured commercially today, Wright says. The researchers are hopeful that later versions of the battery could be used to power hybrid cars.And manufacturing this biobattery should take less energy and produce fewer pollutants, he adds. “This battery is made in water. It has no organic solvents in it, and the material is made in room temperature.”

Tha article Via:journalspace teenblog.org/ eumessenger.com

About the Laptop-Battery Danger

Apple Computer announces it is recalling nearly 2 million notebook computer batteries that could overheat and catch fire. The batteries, like 4 million recalled by Dell, are made by the same supplier, Sony.For personal, noncommercial use only. See Terms of Use. For other uses, prior permission required.

The Apple Computer company is recalling nearly two million laptop batteries like Apple A1008 because of a fire hazard. The move comes just over a week after rival computer-maker Dell announced its own battery recall. Both companies used batteries manufactured by the Sony Corporation.

Apple’s recall of 1.8 million laptop batteries is the second biggest ever for a computer maker, topped only by Dell’s Dell GK479 last week that it would replace more than four million batteries.

Mr. SCOTT WOLFSON (Spokesman, Consumer Product Safety Commission): We have the same issue once again of overheating, of that fire hazard. So once again, consumers need to pay attention to this recall.HORSLEY: Sony spokesman, Rick Clancy, says the battery cells involved in both recalls were made at the same Sony factory in Japan. Sony also makes batteries Acer Travelmate C300 battery for other PC makers, but Clancy does not expect any more recalls.
According to the Consumer Product Safety Commission, batteries in at least six Dell laptops overheated or caught fire, causing some damage. The Commission’s Scott Wolfson said Apple heard complaints from nine customers,likePowerBook G4 15 battery, two of whom suffered minor burns. Professor Sadoway has been looking for a way to build safer lithium ion cells by replacing the volatile liquid center with a solid. Even though such research is important, he says, it’s not been terribly fashionable.

NPR transcripts are created on a rush deadline by a contractor for laptop battery, and accuracy and availability may vary. This text may not be in its final form and may be updated or revised in the future. Please be aware that the authoritative record of NPR’s programming is the audio.

More info:laptop-battery ,dell-gk479 ,xevaa.com/

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linuxjournal.com/

Laptop Battery ,how much do you know

The birth of the day from the laptop, the battery of this “servant” had been accompanied on its side, there is no battery, it can be said can not be called the laptop “mobile computer.” With the notebook performance and technology continues to improve with the improvement, it is the “servant” of the “quality” is also getting higher and higher, from the past, nickel-chromium batteries, nickel-metal hydride batteries to now have been using lithium batteries may be popular even after the fuel the battery, few people care about this and notebooks are closely related to what – the battery, then let me work with you to look into the laptop battery.

The classification and distinction between the battery In general we use there are three kinds of batteries, 1. Nickel-chromium batteries, 2. Ni-MH battery, 3. Lithium battery; they are generally expressed as: Ni-Cd NI-CD, Ni-MH NI-MH, Lithium-Ion battery LI, in recent years, In the notebook field has also been a fuel cell, its only by-product of water and heat, no noise, the basic pollution-free, efficient power generation systems in general higher than the multi-reach 43 ~ 58%, if the heat produced by the reaction utilization, efficiency can be up to 80%! Is a clean and environmentally friendly power. Because of Dell GK479 its technology was not perfect, there are still many problems to be solved, and now it is in terms of cost, size, weight, ease of access to fuel, both absolutely can not and traditional lithium batteries and polymer lithium battery to compete.

NI-CD Ni-Cd batteries because of their age is too early, so have many of the shortcomings of a headache, such as: bulky, heavy weight, capacity, small, short life, there is memory effect, etc. (useless), and now no longer in use. Now mainly NI-MH battery Ni-MH and LI lithium two kinds. Ni-MH battery which is also active in the battery industry, 1:00, compared to other batteries, nickel-metal hydride batteries to be more environmentally friendly some, it is also by far the most environmentally friendly battery,like Dell xps m1730 battery while the lithium battery Well, with a small size, light weight, large capacity, low memory effect, charging time is short, etc., well received by customers love, but you will often see the back of the battery properly abandoned and handling lithium batteries instructions? Because the lithium batteries to discard will cause environmental pollution.

Now, some people may be misunderstanding of lithium batteries, lithium batteries do not remember that, in fact, lithium is not without memory, but only relatively small memory, it seems not very clear. And lithium batteries can be divided into lithium and lithium-ion battery two kinds. Lithium-Ion battery will have a long time ago, and it is not safe when used often in charge when burning, bursting, perhaps because of the sake of lithium element too active. Then there is an improved lithium-ion batteries, lithium can inhibit the added element of active ingredients, so that lithium really a safe, efficient, convenient, while the older Lithium-Ion battery also will be eliminated.more like Vaio VGN-SZ battery As to how to distinguish them from the battery’s label will be able to identify, lithium battery for LI, lithium-ion battery LI-ION.

Now that the market price of the original equipment batteries are very expensive, generally place around 1000-1500, so some of my friends started to replace the battery, through their own batteries to achieve the purpose of extending battery life. Theory should, it is possible, but due process reasons, the Presario V3000 battery batteries are generally used ultrasonic welding, there is no gap, it is difficult apart, even if the hardware is also very difficult to disassemble a close, I see the electronic Shangyuan to the two hands are their own battery replacement batteries and then sell finished, the battery can be a combination of Office, it is clear to see there are 502 marks, after gluing, even with batteries, replace more time to find a match difficult.

The article Via: journalspace eonet.jp blogbus easyjournal blogvie.com vox.com/ mytowncolorado.com/ hottrick.org/ bravejournal.com/ bahraichblogs.com

Today, I made such a topic about that notebook computer users in the use, maintenance, and repairment could sum up some experiences to exchange for better management of their laptop batteries .

1. the regular production of laptop battery manufacturers a variety of parameters clearly marked.
2. buy laptop battery, the best choice nickel-metal hydride batteries or lithium-ion battery.
3. genuine batteries commonly used PC or PVC shell material is very strong, difficult to damage, the general means can not open the laptop battery.
4. neat appearance, there is no extra burr, a certain degree of roughness of the outer surface, and feel comfortable.
5. notebook battery into the battery slot should be around freely, and closely integrated with the machine, while attention to the battery nominal voltage and voltage to correspond to your notebook.
6. to ensure that purchase of the laptop battery charge and discharge of its good performance.
7. under normal circumstances the thinner laptop battery, capacity, the smaller the thicker the laptop battery capacity is also greater.
8. choose the laptop batteries and adapters necessary to ask the dealer asked in detail about the characteristics of batteries and adapters.

If you want to extend notebook battery life, we must also carry out proper maintenance of batteries and maintenance, the following is Ikunori maintenance and maintenance of notes:

1. to avoid laptop battery at a temperature higher than 60 ℃ or lower than -20 ℃ environment, otherwise the use of time and life will be shortened. Laptop battery charging basic method, because laptop battery characteristics vary, so it must be in accordance with manufacturers instructions manual method of charging.
2. if not a long time the machine is best to remove the laptop battery because the case does not boot, will be a gradual loss of laptop battery power
3. due to a general non-rechargeable batteries, lithium batteries, such as the forced charging will cause an explosion.
4. do not laptop batteries and some metal products together to prevent such metal objects touch the battery polarity, short circuit caused by the phenomenon.
5. laptop battery when not in use, if temporarily, you can temporarily release some of them power, but then save it.
6. due to its chemical properties of lithium-ion battery is extremely active in response to intense, so we should not arbitrarily to its demolition. If rain, moisture, dry cloth can be dry, put in dry and ventilated place on their own or with hot air drying of about 40 degrees.

And the plot continues to thicken with Apple joining Dell and issuing recalls of Sony laptop battery packs. But there are clues that Sony’s cells are not the only contributing factor in the recalls. Note that the battery packs’ problem of overheating to the point of catching on fire seems to occur only when the units are plugged in, which implies that it’s during recharging. Is it possible that Dell and Apple’s aggressive charging techniques exacerbated the contamination problem with the Sony cells?

Keep in mind that these battery packs are based on cells which Sony supplies to many laptop manufactures – Sony is one of the top suppliers of 18650 Sony laptop battery cells, yet the problems are apparently limited to Dell models, and some discontinued Apples. (Lenovo, for example, has said, nope, we’re not seeing it.) So what clues can we glean as to what’s really going on? And what lessons can we draw as design engineers? And I don’t think the lesson to be learned is “The problem is the cell supplier’s,” but rather, “When you try to wring every last bit of performance from your charging circuitry you can stress those cells in ways that have distressing results.”

First, a quick run-down of what a battery pack is and isn’t. It’s not a collection of consumer-market batteries. VGP-BPS9 is based on lithium ion cells that come in an industry-standard package, the 18650, so-called because it’s an approximately 18mm diameter x 65mm-long cylinder. The 18650 cell looks on the inside like a layered jelly-roll consisting of the anode and cathode layers separated by a plastic layer that’s permeable to lithium ions that move between the anode and cathode and generate a current. Says Dr. Robin Tichy of high-end battery pack designer Micro-Power, VGP-BPS9 , Sony VGP-BPS8 Battery , vgp-bps2c. “The separator is a flexible polymer membrane and like any other plastic [as it heats] it has a softening point where it’s more likely to be breached. So a contaminant that’s hard and sharp would be more likely to puncture it at higher temperature.”

Now take a look at Sony’s press release, issued after the Apple recall, which states, “The potential for this [battery pack over-heating and/or catching on fire] to occur can be affected by variations in the system configurations found in different notebook computers.”

Dell advertises its super-fast recharge time for laptops. With a too-aggressive recharge scheme that too-rapidly heats cells cells with a probably small – though admittedly out-of-spec – level of contamination you could have a perfect storm that causes xps m1330 battery battery cells to “rapidly disassemble” as they say in the battery business.

But wait, you say, “Haven’t there been several news reports lately about laptops catching fire while in airplane cargo holds? Those puppies sure aren’t plugged in and recharging.” That’s a different scenario: The sony vgp-bps5a battery packs implemented in these cases have been aftermarket packs, which if you’ve been reading previous blogs and articles (and following the discussion threads) you’ll remember are prime candidates to rapidly disassemble. Here’s a quote from the Wall Street Journal, “The trend with smoke or fires would be some type of after-market use, like with spare batteries,” says Bill Wilkening, who enforces hazardous-materials regulations at the Federal Aviation Administration. Product regulators say replacements marketed as compatible with many different devices frequently aren’t. Some of them, including a significant number of counterfeits, lack circuitry that protects the vgp-bps5a battery cell from overcharging.”

Several IC vendors have recently introduced laptop battery charging chips that distinguish themselves by their individual charging algorithms. Whether you roll-your-own charge/recharge subsystem, or go with on of these new chips, make sure you thoroughly understand the impact this will have on your battery pack. Your company’s liability goes far beyond a simple battery pack replacement.

If you are a pc user that is always using your laptop battery and on the go then you may want to purchase a higher performance battery with 9 cells. You can buy after market batteries but you may spend a lot of time looking around trying to match up a battery that fits your laptop. The best way to buy is to look up the manufacture of your laptop and input the laptop model into the website and then select a higher cell dell inspiron E1505 battery. You can also buy an extended battery from them as well. So if you have a Dell laptop then you would want to go to www.Dell.com and type in battery replacement along with your code as in Dell GD761,KD476 .and it will display the different batteries that you can buy. You can use this technique for all laptop brands on the websites.

Step 2If you don’t want to buy a better battery than you can make some changes to your settings on your laptop that will increase the battery life.

Step 3This is for Vista users

Click on start/control panel/Mobile Pc/Power Options.

Here you can select how much power you want to save but the more power you save the slower your pc becomes. (Note)that if you change the settings to power save or balanced then when your laptop is plugged into a power outlet, your laptop will still be set to a slower performance.

Step 4: Click on High Performance and click on Change Plan Settings. This is the best setting because you can fully customize how much power you can save while running of your laptop but when you plug into a power outlet your laptop will return to the High Performance Setting.

Step 5: When the High Performance Setting window pops up then click on Change Advance Power Setting and then the Power Option window will popup.

Step 6:Power Option Settings:

Here you have full control over your battery settings.

Click and expand the Hard Disk tab.

Turn off hard disk after: On inspiron E1505 battery: You can set this to the desire time that you want. I have mine set to 30min//Plugged in: Again, you can set this to the desire time that you want. I have mine set to Never because plugged in I am not using my battery.

Step 7: Expand the wireless Adapter Settings:

Power Saving Mode:

On battery: Here you can select Maximum Performance or Maximum Power Saving. If you want your internet to still be fast then select Maximum Performance but if you want to save dell E1505 battery power and don’t mind a slower internet then select Maximum Power Saving. There are two more settings that you can select to have it a Medium Power Saving and Performance.

Plugged in: You will want this to stay on Maximum Performance.

Step 8: Expand the Sleep tab:

Sleep After:

On battery: Select the time which you want it to go into sleep mode while running on the battery. I have mine set to 15min

Plugged in: I have mine set to Never

Step 9: Expand the Processor Power Management tab:

Minimum processor state.

This is how fast your laptop will be when plugged in or running on the battery

On battery: Set it to 15%

Plugged in: set it to 100%

Now expand the Maximum processor state:

On battery: you can choose 20% to save on battery but if you need more speed when running the GD761 battery you will need to increase this number to around 50%

Plugged in: Set this to 100%

Step 10: Expand the Search and Indexing tab:

Power Saving Mode:

On battery: Set it to Power Saver

Plugged in: Set it to High Performance

Step 11: Expand the Display tab:

Turn off display after:

On battery: set it to 5min

Plugged in: you can set it to whatever you want. I have mine set to 20min

These setting will turn off your screen after the given time that you set.

Step 12: When you are done click on Apply at the bottom and then on OK

Step 13: You will be back to the Change Settings for the plan: High Performance window. On this page you can adjust the display brightness:

On battery: slide the bar to the left and it will dim the screen when it is running on the battery.

Plugged in: You can just leave the slide bar all the way to the right.

If you do not change the display brightness then your graphic card software will be monitoring it and you will need to launch the program to make the changes.

Step 14: When you are done click on Save Changes at the bottom and close out all open windows.

Step 15: Un-plug your power adapter and move your mouse toward the time in the right lower side of your screen at the taskbar and place your mouse cursor over the power option icon and it will display the life of the xps m1330 battery. Ignore the warning about your current plan may reduce battery life because you made the advance changes to your battery. With these new changes on my laptop with a 6 cell battery I am now getting 4 1/2 hours of battery life. Before I was only getting 2 hours of battery life. But this is only with my laptop yours may be different.

Step 16 : Also, the more programs that you run while using the battery will drain it faster so try not to run a lot of programs.

Step 17: Xp users

Click start/control panel and navigate to your power options.

Now I don’t have windows xp anymore but if you look around on all the tabs and look for advance options then you will be able to adjust the battery life to what you want it to.

Step 18: If you are not happy with the performance of your laptop with saving more laptop batteries life then go back and increase the processor number.

Battery Tips

Battery Tips If you find yourself with no electrical adapter or power source and need your battery to operate for as long as possible, take good care of your laptop battery and ensure that it will be ready to work properly and efficiently in the battery mode. The general tips are listed as follows:

Looking for the longest battery life laptop? Actually, many factors affect the amount of time that a laptop battery can deliver power before it must be recharged. How to extend laptop battery life? Here are some more tips to improve your notebook’s battery life:

Sony Announces Lithium Ion Secondary Battery – Last Longer, Recharges Faster

Sony. It’s yet another name when it comes to pioneering technologies that the world presumptively desires. We always wanted to get more juice from our battery powered devices even to the extent that we attempt to squeeze the last drop out.

Be it the mobile phone or the digital camera, it’s the human tendency to greedily wish that the battery lasted a minute more so that you could capture that candid moment or make the last corporate call before your battery is dead and wait for a recharge until you are back in your den.

Well, keeping in view the exploiting usage of battery charge by most of the devices, Sony has finally come up with a new type of rechargeable laptop battery – a Lithium Ion Secondary battery, that combines high-power and long-life performance, better than sony vgp-bps2c,vgp-bps2a ,vgp-bps5a battery,using olivine-type lithium iron phosphate as the cathode material.

Need More Power? Sony is here!

So, what is the new substance science that your Chemistry teacher didn’t tell you about? It’s Olivine-type lithium iron phosphate, the material used for cathode that makes the Sony Rechargeable sony laptop Battery so performing, so different.

Thanks to its robust crystal structure and consistent performance, even at high temperatures. This, in fusion with the Sony’s Particle Design Technology that minimizes the resistance to increase output, make a perfect combination to deliver interestingly good battery performance.

The best part about it. Each battery can take up to 2000 charge-discharge cycles and still keep powering your devices by retaining more than 80% of power redemption. Also, each battery will take not more than 30 minutes to charge up to a level of 99%.

For now, Sony has taken the initiative to develop these batteries only for motor based (power driven) tools for vgp-bps2c battery. Sony is planning to develop similar type of batteries for other mobile electronic devices in future, perhaps the ones that could replace our existing cell phone or digital camera batteries. And, the future is not that far.

There are no details on its pricing , scope of availability and rigid applicational fields yet. So, for now, click here to view detailed technical specifications from the Press Release.

It is precisely because of the portability notebook did not come until everyone’s favorite, but if a laptop is not a high-quality notebook batteries , notebook can not guarantee the stability of long hours of work, the use of laptop notebook must have an external power supply, then lost the notebook on its own significance. But batteries are consumables, work to stabilize the general time in a year or so, then it may “suddenly dead.” If you are planning to buy laptop computers,dell GD761 , KD476, sony VGP-BPS2C laptop battery would need to do a physical examination in order to detect the battery problem.

Procedures for measuring systems

Windows XP comes with the use of the procedure can check the battery status and the use of time estimates. Fully charged battery first, and then unplug the power adapter notebook. Into the “Control Panel”, open the “Power Options”, see “Power List” option in the remaining laptop battery power, this time can be estimated based on the current operation of the program can also use battery time, click the “batteries for more information” also can be seen that the battery models, manufacturers and other relevant information. However, this method results in a single test, and as a result of the operation of the different circumstances there will be differences in power consumption, therefore, the credibility of test results is not high.

Using specialized software testing

There are laptop battery is designed to test the software, use the software testing can be obtained of the degree of information than the system testing will be high, there is USB friends, we might as well take the time to buy these second-hand notebook peer software. 1. Battery Mon “Battery Mon” is a shared software, you can use before registration for 30 days. “Battery Mon” to reflect detailed information on batteries, can record gd761 , kd476 battery discharge curve is smooth, but also according to the actual rate of decline in electricity consumption is estimated that the use of battery time, and software and built-in contrast to standard time. And the relatively short test time. Step 1 First of all, the battery fully charged, and then run the “Battery Mon” and unplug the external power supply. Step 2 Click “Start” after, “Battery Mon” to start recording on the decline curve of battery power. About 2 ~ 10 minutes after

Will generally depict the curve of the decline in consumption, when in the “Comparison Rate” and you select a power curve of the measured inclination of the most similar to the standard curve, so that batteries can be generally aware of how long it will be able to use. Click the lower left-hand corner Tips “Battery Info” button, you can view detailed information about the dell laptop battery . Although the “Battey Mon” to provide estimates of the use of battery time, but this time in real time in accordance with the current calculation of the drop in consumption, so that testing methodology is not sufficiently rigorous, but it is simple and convenient operation, suitable for beginners to use. 2. Battery Mark “Battery Mark” is an old dell inspiron 6400 battery test software. “Battery Mark” Built-four engine, four engine to make use of this comprehensive test of the specific circumstances of the notebook battery. Step 1 will be fully charged battery, run “Battery Mark” (At this time there is no need to unplug the power), follow the prompts to enter your basic information. Step 2 to enter the main interface can be seen after four

Option. First click on “Run”, then “Battery Mark” on the basis of testing a number of systems, if not the configuration of the notebook will not be able to run this program. If passed the test, click on “Finish” to enter the test page. Step 3 here “Battery Mark” program offers two tests: Conditioning Run and Life Test. Conditioning Run is called Graphics engine (Image engine), Processor engine (processor engine) and Disk engine (disk engine) that three engines, and in this between the three non-stop cycle of the engine switch to simulate the actual use of notebooks “torture”, quickly drain battery power. Life Test and the relative number of Conditioning Run a Think engine (thinking engine), but this process is the simulation we use in the process of peace will be carried out with the testing process has become longer and longer. Normally you can not have been running the program, there will be time to think. As a result of more Think ngine, Life Test of Conditioning Run time will be extended for more than 30% ~ 40%. When you choose a good test program, press F3 to start the formal testing, and then need to first unplug the power adapter. When the battery test, after a few hours after consumption of photovoltaic capacity, the system will automatically shut down when power adapter to plug in, boot after the “Battery Mark” will be automatically run and test results are displayed. How to, the operation of these two software will not be difficult for you? Whether you want to still want to buy second-hand laptop battery for their physical examination to look, choose one can be a good

Test results. Tips In general, notebook battery life of 300 ~ 500 times, so do not test the battery regularly.