2010年11月23日星期二

Coming soon, all day battery life

It's the holy grail of any laptop user who spends most of the day out of the office.
Yes, thinner and lighter laptops are a blessing. But how about a notebook that will run all day without recharging? When will we be able to hit the road but leave the AC adaptor at home?
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The answer to that question is "today", depending on the price you're prepared to pay and the compromises you're willing to make (see sub-section below).
Within the next few years it won't be an issue . The march of technology in computer chips and other components will make all-day computing a trait of almost every laptop.

"The challenge for us is to bring all-day battery life to the mainstream so that you take the laptop to work and leave the power supply at home," says Mooly Eden, the general manager of Intel's Mobile Platforms Group.
"But all day means different things to different people. For me it might be eight hours, for you it might be 10 hours. And we need to do even more than that, because as the laptop gets older, the battery life will slowly get lower. We need to deliver 10 to 12 hours without the charger. And we will be able to do that, because all-day battery life is not just possible, it is inevitable."
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Making notebooks better is what Eden does. Through his revolutionary work creating Intel's Centrino laptop technology, the foundation of the Core line of processors, Eden is considered the father of modern mobile computing.
The Core i3, Core i5 and Core i7 chips run faster than any previous generation of Intel silicon, while drawing less power. And even that extra speed is being channelled into eking out extra battery life.
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If you divide the laptop's typical working day into tiny slices of time, most of them are spent being idle. More processing muscle means the notebook can do the heavy-lifting faster, allowing it to return to the low-power idle state more quickly. The more time it spends there, the longer the battery lasts.
If you want all-day computing, here are some shopping hints.
Option up your new laptop. In most business notebooks the standard battery can be replaced by a higher-capacity pack. Dell, HP and Lenovo also offer secondary batteries that replace the CD/DVD drive or attach to the notebook's underside (sometimes called a ¡°travel slice¡±) so you can hit the road with two full tanks of juice.
Look for laptops with fast-charge technology so you can top up the battery quickly by plugging into a power point for just half an hour. Also, place a premium on power-management software that can disable hardware such as the USB and network ports, fingerprint reader and even
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CD/DVD drive, if they're not being used. All those tiny voltage savings add up.
Squeeze the most out of your existing notebook by turning down the screen brightness and turning off 3G, Bluetooth and Wi-Fi unless you need them. After a few years your laptop's battery will be wearing down and running at much less than its original capacity. You can buy a new battery but you'd be much better off to buy a whole new notebook.

source: all day battery life

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