How many WATTS does a laptop use during per usage?
474857
It varies way too much to say for certain. Depends on how hard  you're working your hard drive, cpu, how bright you have the screen, etc. Also wireless cards use up a LOT of power, turning it off when it's not needed will save you a lot
527484
60 watts x 24hrs = 1440WHr\n= 1.44KWH
1024151
Yes.... US current is different from what is used in other parts of the world my Friend... I would advise you, believe it or not, to go to WalMart and get a "universal converter" set... This contains several different adapaters that will allow you to use not only your laptop, but other electrical appliances as well... Makes it a lot easier... Been there, done that!\nTake care...\nThe Duck
1095248
You can use it while it's plugged in. I have a new Dell Laptop as well and I plug it in and sit on the couch to use it. \nI think there is a light that goes green when it is fully charged if you wanted to take it to a local coffee shop or something.
946528
When a fully charge laptop run out in a few minutes
739136
Go get a new 450+W PSU. This way, there are no worries. A calculator is linked below.
125096
No, generally speaking larger laptops use more power, usually because they are more powerful and have larger displays (which takes more electricity).  Smaller laptops tend to be less powerful, less features, and smaller screens, so therefore use less power.\nThis explanation does not apply to battery life as well though, if you are interested in this.  But since you mentioned Energy Star, I'm assuming you are most interested in Energy Conservation, not battery life.  For this, you will be best off with the smallest profile of laptop, the subcompact laptop, if it suites your needs.
174897
1.\nPower down all nonessential functions. Switch it off if you're not using it. Many business travelers already know that you don't want to take the DVD player for a spin on the plane, and that every time you hit "save" it can set the hard-drive whirring, which devours even more power. "But users often also forget to turn off their wireless card when they are no longer using it but are still using their computer," notes Mike Fuller, executive vice president of PC Laptops, a Sandy, Utah, laptop manufacturer. "When the wireless card is on, it still continually searches for networks." In Windows XP, click on "Power Options" in your control panel. It allows you to reduce the power consumption of any number of your computer devices or of your entire system.\n \n2.\nStay out of extreme temperatures. The technology that powers you battery isn't terribly complicated. But it's important to understand a little bit about the chemistry behind batteries, and how that can affect your work. Specifically, temperatures can affect the performance of your battery. It's best to use (and especially charge) your batteries at room temperatures. Extreme conditions can drain your battery quickly. Also, avoid partial charges and use the battery until it is dead. Battery experts liken partial charges — and discharges — to eating a cup of lard every day. It significantly shortens your battery's life. Considering that a lithium-ion battery can explode if it's improperly used, it could also shorten your life.\n \n3.\nLet your laptop do the saving. Not every computing device handles a power source in the same way. Some of the more sophisticated laptops, which are designed with business travelers in mind, are misers when it comes to using power. And that's a good thing — if you can remember to take advantage of it. "Most users make the mistake of simply not choosing to use a product's built-in ability to conserve battery life," says Dan Coffman, a senior product manager for PC manufacturer ViewSonic. How do you harness your PC's built-in ability to save? Consult your user manual. Often, calibrating your laptop is as easy as double-clicking on the battery icon in the toolbar.\n \n4.\nAlways, always carry a spare device that uses batteries. How obvious is that? Well, if you're trying to keep under the onerous new airline weight-limits, it isn't. But as Rick Thompson, director of engineering at Valence Technology in Austin, Texas, observes, "the availability of 'free' power outside of your hotel room is not predictable." That's a nice way of saying it. In fact, I sometimes think airport terminals, car-rental facilities and hotels try to hide the power outlets from us to keep us from accessing their free power. Thompson recommends a system that can simultaneously charge a second portable device such as a cell phone or PDA, allowing you to multitask your battery operations.
899752
It should not be that much to run your computer. The main power users in a home are: 1. Refrigerator \n                                              2.Washer and dryer\n                                              3. Electric heaters \n                                              4. Electric ranges\n                                              5. Freezers\n                                              6. Air conditioners\n                                              7. Dish washers\nAnything with a heating or cooling element will be a big factor in you electric bill. Things like lights and computers do not use much energy so if you leave it on overnight, do not fret about it for that reason alone.
162775
One kilowatt used over a one hour period is one kilowatt-hour.  To find out how many kilowatt hours an electrical appliance uses, look on the label (wattage - say 300 watts).  Divide that by 1000 to get kilowatts (0.3 kilowatts).  Now multiply it by the time you are going to use it for (say 20 minutes [6 kilowatt-minutes] - divided by 60 minutes in an hour [0.1 kilowatt-hours]).  The result should be the number of kilowatt-hours used.
865595
A typical computer uses between 100-150 watts per hour.  But your computer usage will vary depending on how many peripherals and components are installed.  In the United States, rates vary wildly.  I'm in the more expensive area of the country where we pay about 20 cents per Kilowatt Hour.  This amounts to about $15-20 per month per computer.\n\nAnd to the guy who said the TV uses more... you're WRONG.  TVs use between 50 and 100 watts. (except for the larger TVs).\n\nI'm not sure if they make a UK equivalent, but you might want to invest in a device like the Kill-A-Watt meter (google it) - it will tell you how much electricity is being used. \n\nAlso, idle time vs. use time can see the wattage change significantly.  Using my the network can increase wattage use by about 15 watts...\n\nAsking the electric company sounds good but is silly - I've done that, they tend to tell you the computer uses 300 watts (because that's the average power supply in a computer).  Problem is, just because the power supply can provide 300 watts does NOT mean that that's what it uses.  It's kinda like saying your light socket uses 150 watts because it can use a 150 watt bulb... even when you only use a 60 watt bulb.
134849
On LapTops definitely turn it off, it will wear down the battery. On desktops I will turn it off, if your not gonna use it within six hours. The reason for this is I find I have to replace more fans on computer used 24 hours than on the ones that are shut down everynight. If your cpu fan burns out while no one is using the computer, your cpu can burnout as well, costing a bit.
1023774
450 watts min or 600 watts to max it out
193618
Go to CONTROL PANEL and then click POWER OPTIONS and choose how long you want your computer to be on when you're not using it.
851868
IT depends.\n\nIf you need to run a hard drive, CD drive, and the rest of a traditional PC, then it will be more than enough -- most power supplies are 200 watts.\n\nI'd upgrade if you hook a water heater, water bed, space heater, etc tho.
778893
just leave it on.\n\nthat's my answer.  but you do have to edit your power preferences so your computer doesn't turn off after 2 hours of non use.  other than that, I don't know.
161940
Apple iMac G5 w/built in 20" LCD screen\nDoing nothing\n97 watts\nMonitor dimmed\n84 watts\nMonitor sleep\n62 watts\nCopying files\n110 watts\nWatching a DVD\n110 watts\nOpening a bunch of pictures\n120 watts\nComputer sleep\n3.5 watts\nhttp://michaelbluejay.com/electricity/computers.html\n\n\nThis site says savings of $150/year\nhttp://www.ivanhoe.com/science/story/2005/06/22a.html