Do you need to switch a laptop off before and after attaching the adaptor to charge the battery?
360762
No, you can plug the adaptor in anytime.  The machine will switch over to AC power and start charing the battery at the same time. You may or may not see an icon in the task bar notification area.  If you do not see it and want to you do the following. If you you are running XP go to start/control panel (if you have in the XP default mode, it will say pick a category) If that is the case select Performance and maintenance/power options/advanced tab then you will see the check box to show the icon or not.  If THe control panel is in classic mode you will see all the icons. Just look for the icon labeled power option and do the same mentioned before. I hope this helps.
946528
When a fully charge laptop run out in a few minutes
227810
Your network card may be going into power save mode when you leave your computer idle for a while.\n\nTo disable this:\nYou can use Device Manager to change the power management settings for a network adapter. To disable this setting in Device Manager, expand Network Adapters, right-click the adapter, click Properties, click the Power Management tab, and then clear the Allow the computer to turn off this device to save power check box.
1559
Nope you really should not. Most batteries are lithium ion batteries that develop a memory over time. I learned that the hard way. I always left my laptop plugged in, and in a year my battery was completely dead. From what I know, you should do a complete cycle of the battery at least once a month. That means at least once a month, drain the battery to empty and charge it up again. Dont cycle too often though because that too shortens battery life spans... Soo just keep in moderation. Dont always leave it plugged in, but dont always rely only on your battery either.
612013
I had the same issue with my computer.  Unfortunately, the battery has died and you need to replace it.  When you get your new one, try these things to preserve it:  use the charger whenever possible even if the computer is charged, never leave the charger connected when unplugged (it drains power) and shut the computer off when not in use.  These should help to preserve the battery next time!
915218
Laptops come with batteries.  If your laptop doesn't run when you remove your AC adapter one of several things could be happening.  You could have a bad battery, which is the first thing to check.  If your laptop is under warranty I always suggest contacting your vendor for support.  While not usually a fix, cycling the battery does sometimes help (especially with older batteries - it's not so much an issue anymore).\n\nIf your laptop isn't under warranty you really only have a few options.\n\n1.  you can take it in to a professional and have them figure out what's wrong.\n\n2.  you can try basic troubleshooting steps and see if you can figure out what's wrong.\n\nGenerally speaking laptops that don't run on their own battery power but on AC power have bad batteries.  The first thing I would do, is hop on a auction site (ebay/yahoo/wherever) and try to buy a good used working laptop battery.  Replace that battery, give it a few hours to charge and see if that fixes your problem.  If it doesn't - then you probably have a issue internally with your charging system.  Which at your level means taking it somewhere to be serviced.\n\nDoes your laptop run at all without the power cord?  Even a short time would suggest that the battery just needs replaced.
1147745
Unplug it and plug it back in / Or turn it off and turn it back on.
465838
Well, NiCd and NiMH batteries can be charged and stop charging at full charge without the help of some device to determine if it's full. Once the NiCd and NiMH is full, the current will just pass through and waste your electricity (and if it's left charging at full charge for extended periods, it can also damage the batteries). So it doesn't actually disconnect the current. Just passes through.\n\nBut in Lithium ion batteries, you need some kind of device to determine if it's fully charged. Cellphones, PDA, and iPods kinds of turn on (like, it shows the charging display, but it's not actually on and in your normal thing) when it's plugged into a current so it can detect if it's fully charged. So basically, the device is the mini-computer that determines the charge of the battery.\n\nSo, to answer your question, don't try to create a circuit that will disconnect the current when a Lithium Ion battery becomes fully charged, unless you have the capability, materials, time, and patience to do it. And steady hands. It's really tricky to build a Lithium Ion Battery charger.\n\nPS Penguins!!!
586475
(If it's laptop) you just have to charge it. If that doesn't work, replace the charger. If that doesn't work too, replace the battery. If nothing works, buy a new computer.
465054
For future reference, as soon as any computer device gets wet - REMOVE POWER and BATTERY ! \n If you have manual, remove battery and harddrive. There is a 40 pin IDE ( with 5V, GG, 12V adapter) to 44 pin laptop adapter available at most computer stores. This allows you to jumper your laptop drive as a SLAVE on a working computer ( Desktop), and just transfere the files. This assumes that the Desktop is newer and using the same or newer version of Operating System ( OS), ie win98, win2000, winME, winXP, etc.\n Leaving the battery in a wet machine allows the voltages to continually cook the chips. If you have the time, you can go online and look for technical diagrams on the laptop, and start taking it apart, carefully. If you clean the areas that were shorted with coffee, dry, and re-assemble, you have a "chance" that you can repair the thing... Most people do not have the tools or the patience to do this, but it is entirely possible to do.\n Putting the laptop drive in another laptop is a bad way to try to get files copied, since the new laptop will boot on the old hardware system files, and be very mixed up- the modem, the ethernet, the CD, and even the display with probably not work properly.... so what do you copy the files to???\n Since you now have nothing and nothing, putting the drive in a working desktop, using the adapter ( usuually a green circuitboard with two connectors on the ends ), is the best bet.\n Then work on getting the old laptop going. Take it apart slowly, and stick all screws to a piece of paper, numbering them, and putting little masking tape numbers where they go.\n good luck.
225599
Even if you have your laptop powered down, the battery is still providing energy to the laptop to be able to turn itself back on, not to mention that the BIOS has to have constant energy.  This is why you will notice a slight drain, it's nothing serious, just necessary for the laptop to continue running correctly.  To put it simply, a computer needs constant power to be able to keep time and settings in BIOS, and to be able to initiate the startup sequence.  Hopes that sheds some light, my $40,000 education just answered your question.
730447
Turn it off first if you care for your laptop..
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.
750902
Yes, I do it all the time.\nIt works with any modern laptop.\nTurn off the laptop, remove battery, replug power adapter. Turn on.\nAs simple as that.\nTo use battery again, turn off, replug, turn on.\n\nThe power adapter supplies power to turn on the computer in the same time as it charges the battery. When the laptop is charging, the battery is not used. This is why battery live longer if you keep on pluggin in your laptop, and sure you can remove the battery.\n\nSometimes I even unplug the battery without turning off the laptop. But I wouldn't suggest this as this may possibly damage the circuitry in the long run.\nMy 3 years old laptop battery recently fails to hold a charge, because its old and I use it extensively. Now I'm using it without battery. It's much lighter to carry now :D.\n\nHowever, you should be careful with the battery.\nIt's not good to store the battery too long in certain condition. I suppose your laptop is a modern one and uses Lithium Ion (Li-Ion) battery. Lithium Ion battery is an unstable chemical, as with other battery. It will degrade in quality and capacity over time. But it will degrade faster under certain conditions:\n1. Too hot or stored in a hot case/room (for example in a car under sunlight).\n2. Charged full (100%) and then not used for a long time.\nThe battery will also die if you empty or near-empty the battery (like 0 or 1%) and then remove and then store it for a couple of days to weeks. Li-Ion batter has a certain threshold of voltage and if it reaches a certain low voltage, it will explode if recharged. There is a mechanism in the battery that will prevent the battery to be recharged if the voltage reached very low levels, and it will not explode, but you will have to buy a new battery.\n\nSo, if you want to store your battery, make sure to store it when it is around 40% charge. This is the optimal charge that will make it live longer and you can store it like 1-2months.\n\nThanks for 2 points.
918618
1.  Disconnect the battery physically from the laptop - let it discharge for a few minutes.\n 2.  Put the battery back into the laptop.\n 3.  Boot up laptop and charge battery.\n 4.  Shut down laptop and unplug adapter from wall and laptop.\n 5.  Boot up laptop\nIf the battery does not maintain a charge at this point, it's probably a goner and needs replaced if you would like to do work independently of a power adapter.
330117
WIth a laptop, you would have to reset the CMOS which would involve taking the whole laptop apart and removing the battery. Best to take it to a shop for this.
1051445
If you program to do that, then... It will do it by itself. If you turn off a computer, you must reboot to restart it. If you have it hibernate, it does not need to reboot.