2012年3月22日星期四

Make Your Laptop Battery Last Longer: 3 Tips

Does your laptop battery give out a lot sooner than it used to? Are you lucky to get an hour or two of work done before you need to start searching for an AC outlet? Sounds like it's time to think about replacing the battery.(asus k53sv battery asus a53sv battery)

Get reader for sticker shock: laptop batteries are expensive. Prices vary from one model to another, but it's not uncommon for new power packs to sell for $100 or more. I've seen some as high as $150. When you consider that brand-new laptops now sell for as low as $300, that can be a tough pill to swallow.

Whether you’re already in the market for a replacement battery or just concerned about the inevitable day when you will be, here are three things you should know:

1. Most laptop batteries start to fail in 1-2 years. This varies depending on your usage, of course, but the average laptop battery is good for around 400 recharges (a.k.a. cycles). After that, it starts to lose its capacity to hold a charge.(87-M54GS-4D31 AA-PB2VC6B)

That’s why the battery that once gave you, say, 3-4 hours’ worth of runtime now peters out after just 1-2 hours. And after a few years, you might be lucky to get an even an hour.

2. You can extend the life of your current battery. If you use your laptop as your primary desktop PC, you may be wasting battery cycles by leaving it plugged in all the time.

The solution: pop the battery out until you actually need to go somewhere with your laptop. As long as the latter is plugged into an AC outlet, it doesn’t actually need the battery.( asus k53t battery asus a43 battery)

Trust me on this: I’ve seen fairly new batteries that could barely last half an hour, even though the laptop rarely went anywhere. When in doubt, pop it out.

3. Investigate third-party alternatives. When you do end up needing a replacement battery, you don’t necessarily have to buy one from the laptop manufacturer--paying top dollar in the process. (asus a43sj battery AA-PL2VC6W/E)

Instead, search the Web for the laptop make/model and "battery" to see if there are less-expensive third-party options. If your system is a popular model, there almost certainly will be.(asus a43s battery asus k43s battery)

Also, be sure to check out Dr. Battery’s Advanced Pro Series. These replacement batteries--available for a huge range of laptop models--promise 800 recharge cycles (meaning they should last twice as long as your current battery) and come with a two-year warranty. Plus, they’re priced fairly competitively at $88 and up.

By the way, you should always, always, always recycle old laptop batteries. Stores like Best Buy, Lowe’s, and Staples have bins or kiosks where you can drop them off.(asus k43u battery asus k43sj battery)

Okay, your turn: Have you shopped for a replacement laptop battery? If so, how much did you pay? Were you able to find any cheaper alternatives?

New iPad's battery life (nearly) the same as the old iPad's

Apple claims the larger battery found in the new iPad will go a long way toward compensating for the tablet's dramatically increased pixel count. This weekend I got the chance to put the battery's compensation to the asus k43e battery test.

It took the better part of my day to get to that 10 percent point. Damn long-lasting tablets.



Over the last couple of days I've run CNET's tablet battery drain test on both the asus a53s battery new iPad and the iPad 2. The iPad 2's battery life hadn't been tested since iOS 4.3, so while my focus was on asus k53u battery evaluating the new iPad's battery, this was also an opportunity to see if iOS 5.1 brought any battery life improvements over 4.3.

The results

The results speak for themselves, but if you need further explanation, continue reading after the chart.

iPad (2012) iPad 2 (iOS 5.1) iPad 2 (iOS 4.3) Transformer Prime Transformer Prime w/keyboard dock

Movie battery life (in hours) 12.8 14.2 11.9 9.6 15.3

How we tested battery life

We evaluated battery life the same way we do for all tablets: by continually running a movie file on the iPad until its battery dies.

We set each tablet to Airplane mode and asus k53sj battery adjusted its respective brightnesses to 150 candelas per square meter (cd/m2) or as close to that number as possible. For each iPad, that's a AA-PB2VC6W bit lower than the halfway mark on the brightness scale.

We ran the 720p iPad version of "Toy Story 3." On the Transformer Prime, we ran a 720p version of "Toy Story 3." The new iPad also supports 1080p playback of movies, but we've yet to run the battery test with a movie file at that resolution.

On the iPads, we ran the movie through the asus k53sc battery Videos app; for the Prime, we used the movie player app mVideoPlayer, as it provides a much-needed repeat video function that not all native Android movie players include.

Analysis

While the new iPad drained faster than the asus k53s battery iPad 2, its 12.8 hours of battery life is still the second-highest result we've seen on a AA-PB2VC6W/B tablet using a single battery. Even compared with the Transformer Prime with its battery-embedded keyboard, the iPad lasted only 3 hours less. Even more impressive was that it achieved this running at that incredibly impressive 2,048x1,536-pixel resolution.

Looking at the iPad 2 results, we also asus k43 battery saw evidence that Apple made some very meaningful battery optimizations going from version 4.3 to 5.1 of its OS. And although the iPad 2 got 1.4 hours more juice when watching a movie, nearly 13 hours of continuous 720p playback is asus a53u battery nothing to thumb your nose at. That gets you an entire season of "Game of Thrones," with enough leftover power to squeeze in a couple "The Walking Dead" episodes as well. That's a lot of good-looking entertainment you can consume on just one charge.

We will follow up soon with more iPad battery life results, including Wi-Fi-, 4G, and 1080p tests. Also, check out our full tablet battery life list for more comparisons.


Eric Franklin

Eric Franklin is senior editor covering monitors and tablets and also manages CNET's San Francisco testing lab. When not reviewing the asus k53ta battery

latest products in his categories, he's usually gaming, system building (you know, desktop PCs), working out, or imagining himself as one of an interchangeable cadre of super-powered individuals performing really cool-looking actions in slow motion.

A Laptop Battery Owner's Guide



Learn how to make your current battery last longer and shop smarter when the time comes to replace it.

A Laptop Battery Owner's Guide

Learn how to make your current battery last longer and shop smarter when the time comes to replace it.(asus a53e battery asus a53 battery)

Get reader for sticker shock: laptop batteries are expensive! Prices vary from one model to another, but it's not uncommon for new power packs to sell for $100 or more. I've seen some as high as $150. When you consider that brand-new laptops now sell for as low as $300, that can be a tough pill to swallow.

Whether you’re already in the market for a replacement battery or just concerned about the inevitable day when you will be, here are three things you should know:

1. Most laptop batteries start to fail in 1-2 years. This varies depending on your usage, of course, but the average laptop battery is good for around 400 recharges (a.k.a. cycles). After that, it starts to lose its capacity to hold a charge.(asus a53 battery asus k43sv battery)

That’s why the battery that once gave you, say, 3-4 hours’ worth of runtime now peters out after just 1-2 hours. And after a few years, you might be lucky to get an even an hour.

2. You can extend the life of your current battery. If you use your laptop as your primary desktop PC, you may be wasting battery cycles by leaving it plugged in all the time.(AA-PB3VC3B AA-PB3VC6B)

The solution: pop the battery out until you actually need to go somewhere with your laptop. As long as the latter is plugged into an AC outlet, it doesn’t actually need the battery.

Trust me on this: I’ve seen fairly new batteries that could barely last half an hour, even though the laptop rarely went anywhere. When in doubt, pop it out.

3. Investigate third-party alternatives. When you do end up needing a replacement battery, you don’t necessarily have to buy one from the laptop manufacturer--paying top dollar in the process.( AA-PB3VC6B/E AA-PL2VC6B)

Instead, search the Web for the laptop make/model and "battery" to see if there are less-expensive third-party options. If your system is a popular model, there almost certainly will be.

Also, be sure to check out Dr. Battery’s Advanced Pro Series. These replacement batteries--available for a huge range of laptop models--promise 800 recharge cycles (meaning they should last twice as long as your current battery) and come with a two-year warranty. Plus, they’re priced fairly competitively at $88 and up.(AA-PL2VC6B/E AA-PL2VC6W)

By the way, you should always, always, always recycle old laptop batteries. Stores like Best Buy, Lowe’s, and Staples have bins or kiosks where you can drop them off.

Okay, your turn: Have you shopped for a replacement laptop battery? If so, how much did you pay? Were you able to find any cheaper alternatives? Tell me your battery stories in the comments!

Uruguay is First Country to Get New Model XO Laptop



On the opening day of the 2012 Annual Meeting of the Inter-American Development Bank, One Laptop per Child (OLPC), a nonprofit organization whose mission is to provide every child in the samsung n150 battery world access to new channels of learning, sharing and self-expression, announced that Uruguay will be the first country in the samsung n150 plus battery world to receive the newest model XO children’s laptop.

Uruguay began working with OLPC in 2007 and by mid-2010 achieved samsung n230 battery complete laptop saturation, providing XO’s to all 570,000 primary school children in the country. The project recently ordered 60,000 XO 1.75’s in order to take advantage of the samsung n145 plus battery many breakthrough hardware and software features in the new model.

“We are deeply committed to making One Laptop a Child a reality for all our children because we believe that digital fluency is samsung n148 battery essential to a 21st century education,” said Miguel Brechner, Director of the Technological Laboratory of Uruguay and in charge of Plan Ceibal. “The XO laptop empowers children by allowing them to explore the world, be creative, learn by doing and collaborate and share with their classmates and communities.”

During its 2012 Annual Meeting in Montevideo, representatives from the Inter-American Development Bank will visit several schools to see how children and teachers are integrating XO laptops into their classrooms.

The XO 1.75 provides significant advances in technology that reduce u40-4s2200-g1l3 power consumption and make the laptop more rugged for children’s use. This is the first laptop from OLPC to incorporate an ARM-based processor from Marvell, a leading global semiconductor company that has collaborated closely with One Laptop per Child on samsung n250 battery technology development. The Marvell Armada 610 processor in the XO 1.75 uses very low power, 4 watts when in use and 200 milliwatts when idle, which is a quarter of the u40-3s4400-g1l3 power consumption of other processors on the market. Power consumption is a major challenge for laptop deployments in remote and rural regions where electricity is scarce or non-existent.

The XO 1.75 will also feature a new operating system release with the newest version of the Sugar learning environment. Developed under OLPC’s leadership with contributions from the samsung n150p battery Sugar development community, the new version of Sugar includes significant improvements in usability, performance and easier self-discovery of how Sugar works.

“We salute Plan Ceibal for its leadership in providing all Uruguayan children access to a u40-3s4400-c1m1 modern education,” said Rodrigo Arboleda, Chairman and CEO of the One Laptop per Child Association. “Uruguay is a u40-3s4000-s1l2s great example of a well-planned, well-executed deployment that is having a positive impact on children’s educational development.”

About One Laptop per Child

One Laptop per Child (OLPC at http://www.laptop.org) is a non-profit organization whose mission is to provide every child in the world access to new channels of learning, sharing and self-expression. In partnership with the samsung n145p battery public and private sectors and non-governmental organizations and supported by comprehensive implementation and pedagogical services, OLPC seeks to provide each child with a rugged, low-cost, low-power connected laptop that empowers individual learning and growth.

How to Protect Your Laptop

A laptop’s portability makes it convenient--and an easy target for thieves.

Losing your laptop can be devastating, especially if you keep important documents and files on its hard drive, without a backup. Here are five ways to protect your laptop from being stolen (or from remaining stolen), as well as to safeguard the data you store on it.

1. Use a Physical Lock

Physically locking your laptop to an immovable object isn't exactly the coolest thing you can do, but it works. Just about every laptop on the market is equipped with a small lock slot that works with laptop locks such as the Kensington ClickSafe Keyed Laptop Lock ($45) or the Targus Ultra Max Laptop Cable Lock ($50).

A laptop lock isn't svelte, but it is secure.These laptop locks work just as bicycle chain locks do: You find a large, immovable object, such as your desk, and wrap the metal cable around it. Insert the lock into your laptop's lock slot, and your computer becomes virtually theft-proof, assuming that the thief cares about keeping it in working condition. This isn't a viable solution for many places--you're unlikely to find a lot of immovable furniture in a coffee shop, for instance--but it is useful if you need to leave your laptop alone for any amount of time (say, in a hotel room).

2. Install Tracking Software

Well, your laptop has been stolen. Or perhaps you lost it, and some unscrupulous individual picked it up (in other words, they stole it).

How can you retrieve it? Fire up the laptop-tracking software that you had the foresight to install on your machine.

A new samsung n350 battery breed of laptop security software has arrived, and it's very effective. Using several different elements, including IP address locations, Wi-Fi positioning, and even the ability to turn on the laptop's webcam remotely, laptop-tracking software can help you get samsung np-n150 battery your laptop back.

Flipcode's Hidden, Absolute Software's LoJack for Laptops, and ActiveTrak's GadgetTrak are just a few examples of laptop-tracking software.

A small Mac application, the $15-a-year Hidden uses IP addresses to pinpoint your u40-3s4400-c1h1 laptop's location. On top of that, Hidden can take photos remotely using your laptop's webcam, as well as 63gu40026-1a capture screenshots of what the thief does on your computer, so you can identify the culprit by both face and name (if the person happens to log in to an email account or social network).

LoJack keeps tabs on your laptop.LoJack costs $30 a year, and works on both Windows and Mac computers. In addition to tracking your stolen laptop, LoJack lets you freeze your computer remotely, create a u40-3s4000-g1b1 custom message to display on its screen, and remotely erase files from your laptop--a huge plus for business users who might be carrying sensitive documents.

GadgetTrak works with both Windows and Mac machines, and costs $20 a year. GadgetTrak uses Wi-Fi positioning to find the Uniwill U40 battery location of your laptop within about 10 to 20 feet, and lets you take remote photos of your laptop's captor. The software is also tamper-proof, so no one can modify it on the laptop unless you deactivate the software from the GadgetTrak website.

Having laptop-tracking software installed on your portable doesn't guarantee its recovery, and you'll have to combine the software with some old-fashioned sleuthing (checking your local Craigslist ads for laptop fire sales, for example) in order to catch the thief. But it's definitely a start.

3. Back Up Your Data

Losing a $1000 piece of machinery is pretty bad, but losing a $1000 piece of machinery with all of your important files on it is much, much worse. If your laptop ends up in the wrong hands, the last thing you want is for all of your data to land there too.

For this reason, you should probably invest in a advent 5431 battery physical external hard drive, such as the supertough IoSafe Solo Pro ($350 for 1TB), which is both waterproof and fireproof, or the versatile, hot-swappable LaCie 2big Quadra ($369 for 2TB). You don't have to back up your computer every 5 seconds, but it is a advent 5611 battery good idea to back up the machine whenever you can remember to do so. It's also wise to keep sensitive documents off portable machines and drives entirely, if at all possible.

For backing up recent documents, I prefer using cloud-based backup services such as Dropbox or Mozy. Cloud-based backup services are much more convenient because you can access them from anywhere you have an Internet connection, and you don't have to plug your laptop into a physical hard drive.

Secure your files in the cloud with Mozy.

Dropbox gives you 2GB of free storage space, which isn't enough for an entire hard-drive backup, but is msi bty-m66 battery usually plenty of room for recent documents and files. Dropbox works by putting a advent 5421 battery folder on your system: All you have to do is save a file in that folder, and it automatically syncs with Dropbox's server. The benefit of this autosync process is that even if someone steals your computer right then, you'll still be able to access that file by signing in to Dropbox from another computer.

Mozy is more of a traditional backup service. For $6 a month, Mozy gives you 50GB of space for backing up your entire hard drive (if you so choose). Mozy also offers multiple restore options, including Web-restore and DVD-restore, as well as through the Mozy software client. Restoring files from the Mozy cloud is a more involved process than simple syncing, though--it's backup software, not file-sharing software.

4. Don't Store Passwords

It doesn't matter how many obscure punctuation marks your msi m670 battery password has if your computer automatically remembers all of your passwords. Be wary of using password-management programs such as LastPass on anything that could be stolen (it's okay to stick LastPass on your 40-pound desktop, if you wish). You should also refrain from typing all of your passwords into a plain-text file on your computer.

[For tips on building secure, memorable passwords, check out "How to Build Better Passwords Without Losing Your Mind."]

If you lose your laptop, you should still take the advent 9115 battery precautionary measure of changing all of the passwords to your online accounts, just in case something slipped through the cracks. Also remember to file a police report and consider identity theft protection advent 5712 battery programs, especially if you ever made an online purchase using the laptop.

5. Get Insurance

You can find multiple kinds of insurance that will cover your laptop being stolen, lost, or dropped.

The first place to check is with the laptop's manufacturer: Many companies offer extra insurance (for an extra fee, naturally). You can also check with the store you purchased the laptop from--retailers like Best Buy typically sell extended warranties. Keep in mind, though, that extended warranties sometimes offer accident protection but rarely provide theft protection, so you may want to skip these plans if your main fear is losing your laptop.

If you can't get your laptop adequately insured by the advent 6552 battery manufacturer or by the store you purchased it from, take a look at your renter's or homeowner's insurance. Many renter's and homeowner's policies insure all of your advent 5302 battery private property, no matter where it is when it's stolen. These policies vary greatly, but usually they are limited to theft, vandalism, fire, and flooding--not accidental coffee spills or a fall from a windowsill.

If you use your laptop primarily for business purposes, your business's insurance policy may also cover it.

Beyond those options, if you still can't find the advent 6441 battery coverage you want, you can always consult third-party laptop and electronics insurance companies. These services offer the most comprehensive coverage for a notebook, though they can be expensive if your machine is advent 9315 battery already covered under another insurance policy. Safeware offers stand-alone notebook insurance that covers everything from theft and vandalism to cracked screens, accidental damage, and liquid spills.

I have not used Safeware personally, but I have used the similar, student-specific coverage from CSI Insurance Agency. It protects electronic equipment from theft, fire, floods, earthquakes, vandalism, electrical damage, water damage, and accidental damage. While I had CSI, I successfully filed three claims (one for laptop damage, and two for stolen cameras).

Protect Yourself

Even if you take all of these precautionary steps, having your laptop stolen will still be painful. But it will be less painful if you know that your files are backed up, your passwords are safe, your insurance company will pay for the loss, and you have a very real chance of catching the crook.

Microsoft’s big challenge ahead



A two-day forced vacation from the MacBook Pro I normally use during work hours, necessitated by a logic board replacement, forced me to turn instead to a Hewlett-Packard notebook computer running Microsoft Windows.

The switch, plus last week’s news about Apple Inc.’s new iPad (more on that next week), got me to thinking. I’m not a u40 battery stock market guru, and mine may not be the best investment advice you can find, but here goes: Short your Microsoft stock, if you don’t dump it altogether.

That’s a bit extreme, and Microsoft’s partisans would be quick to advent 5301 battery note that there is plenty of life remaining in the firm and its products. Indeed, one of the preferred productivity applications on the advent 5612 battery Apple desktop/notebook platform is Microsoft’s version of Office for the Mac. But that doesn’t eliminate or ease the challenges the folks in Redmond, Wash., have ahead of them.

First, there are those incredible iPad sales numbers. In announcing the “new iPad,” as Apple called it last week, the M66NBAT-6 firm said it had sold more iPads in 2011 than any other single computer maker had sold desktop or notebook PCs. Other analysts say Apple should easily sell a total of 100 million iPads by the BTY-M66 end of 2012. Since every iPad has at least a Wi-Fi connection, and often a wireless data radio, that means a lot of “connected devices” out there, ones that can access cloud-based applications and data.

That has all sorts of implications - for users, for system administrators and, again, for Microsoft. In a acer 5943 battery cloud-based environment, a tablet (iPad or otherwise) or a desktop computer, for that matter, essentially becomes a advent 9415 battery terminal, accessing both data and applications from the cloud. Fair enough, but from whom will those applications be obtained? It could be Microsoft, but it doesn’t have to be. Just ask Google, which is very happy to sell you its online productivity software. Or talk to Oracle, which now owns and distributes OpenOffice, a highly compatible clone of Microsoft Office.

The bottom line? Microsoft should embrace services such as OnLive Desktop — and do so, pronto — to keep viable links to customers.

Second on the list of potential giants in the Microsoft forest would be the Windows operating system, and even those vaunted applications. Yes, the msi m662 battery release of Windows 8 is in the wings, and a public “beta” version is available. But even Windows 7, itself a vast improvement over the ill-starred Vista release of a few years back, is clunky and feels dated, especially in the face of the acer 5943g battery touch-gesture-rich operating system on the iPad, elements of which Apple is bringing not only to its next desktop OS X release, Mountain Lion, but also to individual applications. Ironically, there are bunches of touch-sensitive Windows-running desktops out there; the Microsoft software just isn’t as creative in exploiting touch.

On the Web browser front, Microsoft is wildly optimistic when it advertises Internet Explorer 9 as the start of a great Internet surfing experience. Unless one wants to ride a wave of creamed corn, that is. Using IE9, even on a advent 5711 battery computer with a relatively new and supposedly msi vr600 battery powerful quad-core AMD processor, is anything but elegant or fast. Again, Microsoft seems to be blissfully ignorant of such competitive products as Apple’s Safari, Google’s Chrome or Mozilla.org’s Firefox, let alone Opera Software’s eponymous browser.

It doesn’t have to be this way, and it shouldn’t. This columnist was opposed to hegemony when that word was applied chiefly to the Soviet Union, and a vibrant, competitive software/applications marketplace is in everybody’s best interest. Those of us who want to root for Microsoft’s applications - some of which are quite good - are just waiting for some signs of life on the part of a technology titan.

Infinity Blade Is Just Getting Started With the iPad's Retina Display



Apple’s new iPad looks and feels almost exactly like the iPad 2, until your turn it on and start using it. The retina display, which has more pixels than your standard HDTV, is a wonder, and app developers have been scrambling to update their products for it.

One of those apps is Infinity Blade II, arguably one of the advent 6651 battery most popular games on the iOS platform. Chair Entertainment, which makes the app, managed to finish in time to deliver an update today. Mashable caught up with Chair Founders bothers Donald and Geremy Mustard for a brief chat on what it took to retina-fy the app and how the retina display makes things better.

[More from Mashable: New Verizon 4G iPads Can Also Run on AT&T]

The updated Infinity Blade II, available now, is not the advent 5311 battery same game Apple demonstrated at last month’s iPad New launch. That game, Infinity Blade: Dungeons, is a batefl50l6c40 whole new style of game play. Donald Mustard called it “a dungeon crawler that takes place in the same universe.” It won’t hit the App Store, though, until this fall.

See Also: Infinity Blade: How Two Brothers Made $20 Million From One Mobile Game

[More from Mashable: Apple Factory Reporter Lied to Us, Says ‘This American Life’]

In the meantime, Chair has been working on a LIP6220QUPC SY6 couple of other important updates, including this one for the iPad third-generation’s new retina display. Chair’s Jeremy Mustard told us that it took about two weeks of hard work to get it working properly. The advent 6553 battery result is a game that works smoothly on the new, higher-resolution display and, despite all the extra pixels, is not scaled up (stretched and distorted) in the least. It does not, however, look much more digitally rich than the original Infinity Blade II.

“Apple has given us a lot of cool stuff with the new iPad,” said Jeremy Mustard. However he added that the advent 5312 battery retina display overshadows some of the other important innovations. With its A5X CPU and quad-core GPU, the new iPad is “twice as powerful as the iPad 2,” he said.

For games like Infinity Blade II, it takes a lot of CPU and GPU power to render each pixel, Mustard explained. “You can take advantage of all the advent 5511 battery new pixels or use [the power] to make each pixel look a lot cooler.”

Mustard says that Infinity Blade II’s March 15th update definitely uses advent 5313 battery a lot more pixels, but he left a little room on the CPU and GPU “to use that extra power on the next update.”

In other words, Infinity Blade’s next app update (which will also be free to IB2 owners) will look even better. That update will also include a new batefl50l6c48 social gaming feature called “ClashMobs.” We’ll have more on that in a future report.

Donald Mustard said the new iPad lets them do some amazing stuff and their plan is, “We’re going to keep pushing the new iPad to the limit.” That should be music to every iPad gamer’s ears.9 Cell LIP6220QUPC SY6 Battery.

Which games are you running on your new iPad? Tell how look and how well they work in the comments.