this is an article from a website.\n\n[URL]http://news.com.com/Vista+draining+laptop+batteries%2C+patience/2100-1044-6181366.html?part=dht&tag=nl.e703[/URL]\n\nVista draining laptop batteries, patience\n\nMicrosoft's attempt to improve power management in Windows Vista hasn't made\nup for the pretty but power-hungry Aero interface, causing battery life to\nsuffer.\nBy Tom Krazit\nStaff Writer, CNET News.com\n\nPublished: May 4, 2007, 4:00 AM PDT\nSome of Microsoft's most important customers aren't happy with the battery\nlife offered by notebooks running Windows Vista.\n\n"It's a little scary," said John Wozniak, a distinguished technologist in\nHewlett-Packard's notebook engineering department, referring to the work HP\nneeded to do on making Windows Vista more suitable for notebooks.\n\nVista, while touted as having improved power management capabilities that\nwould make it easier for users to extend battery life, isn't to some living\nup to that promise. The main culprit appears to be the Aero Glass interface,\na spiffy new user interface that makes Vista more pleasing to the eye with\ntransparent windows and animated transitions when moving from one\napplication to another.\n\nWhen Aero is turned off, battery life is equal to or better than Windows XP\nsystems. But with it turned on, battery life suffers compared with Windows\nXP.\n\nMicrosoft made some important changes in Vista that do improve some aspects\nof battery life, such as smarter hibernation modes that override\napplications that want to keep running, and simpler options for choosing a\npower management setting. But laptop users who spent extra money on powerful\nlaptops to handle the graphics requirements of Vista and the Aero interface\nare forced to run the aesthetic equivalent of Vista Basic, the low-cost\nversion of Vista, if they care about battery life.\n\nHP decided it wasn't going to use the power management settings that shipped\nwith Vista, Wozniak said. The company came up with its own set of power\nmanagement settings for Vista laptops, allowing users to select different\npower settings, such as "power saver" or "high performance," that strike a\nbalance between processing power and battery life. Lenovo is likewise using\nits own power management technologies honed over several years, said Howard\nLocker, director of new technology at Lenovo.\n\n"They've really made it complex from a power management standpoint," Wozniak\nsaid. "The potential is there to do some good things, the bad thing is that\nit comes with the canned settings...and we didn't like any of them."\n\nReports that Vista was an energy hog started to surface during beta testing\nlast year. At the time, Microsoft said many of the problems would be cleared\nup by the time the operating system launched. Of course, this isn't a new\nissue when it comes to operating system changeovers, said Richard Shim, an\nanalyst with IDC. "When you look at a new operating system, battery life\ntends to be worse. When Windows XP came out, that was true, and when Windows\n98 came out, that was true."\n\nThe difference this time around is that notebooks are "the growth engine for\nindustry," Shim said. Notebook PCs now account for more than half of all\nretail PC sales and are projected to become the majority for the whole\nmarket by the end of the decade.\n\nBut battery life problems continue to rankle notebook users. As blogger Rob\nBushway of Tablet PC site Gottabemobile.com put it, "when a consumer has to\nbuy an extended battery to get what they use(d) to get out of a standard\nbattery, something is really wrong."\n\nMore than one company other than HP has acknowledged the demand that Vista\nand the Aero interface put on a notebook PC running off its battery.\n\n"Vista is consuming more power than Windows XP, but we have been very\nfocused on introducing more power-efficient technologies," said Bahr Mahony,\ndirector of product marketing for Advanced Micro Devices' mobile product\ndivision.\n\nMost attribute that power use to Aero. "In (Aero) mode, you will drain the\nbattery faster, but you get something in return because it's cool and nice\nlooking," Lenovo's Locker said.\n\nThe Aero interface is automatically disabled when users put their Vista\nnotebooks into the "power-saving" profile, one of three new simplified\npower-management states. While that makes for an arguably duller experience,\nMicrosoft said it commissioned a study (click here for PDF) that found no\ndifference in "responsiveness," or application load time, between a notebook\nwith Aero disabled versus one running the fancy graphics: implying that Aero\ndoesn't put too much of a load on the system.\n\nBut the notebook and Tablet PC used in Principled Technologies' test had the\npower management setting on "high-performance" when testing Aero's\nperformance. At that setting, the notebook won't ever compromise performance\nto preserve battery life, so responsiveness isn't an issue.\nMicrosoft isn't deterred by HP's decisions and other criticism. "We actively\nencourage (PC companies) to customize the default power profiles so that\nusers get the most out of their hardware," Microsoft said in a statement.\n\nA more definitive statement on Windows Vista and battery life should surface\nsoon, with Intel scheduled to release new chips for notebooks next week at\nthe launch event for the next generation of its Centrino technology. Also,\nBapco, an industry benchmarking organization, is expected to soon release\nthe MobileMark 2007 benchmark.\n\nMicrosoft, for its part, will likely have to improve Vista's battery life\nperformance over time through the release of service packs and other tweaks,\nShim said. "The (PC companies) are getting pressure from consumers-\-who are\nthe notebook adopters-\-who are saying their number one priority on a\nnotebook is battery life."