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Yes. Though I have not research this information, it is probable that the battery-charging process is not 100% efficient and that there is some loss of energy in the way. This loss would be the net difference of energy consumption between using your laptop on battery power and then recharging it, and using it on AC power.
However, in practice this might not reveal true when you consider the probability that your laptop has different power consumption settings for the two modes, so IF the energy efficiency gain from your "battery power saving" is superior to the inefficiency of the battery-charging process, the net result will be less energy-demanding when on battery power. Note that the same power saving settings used on battery power can be applied to AC mode.
The one thing that is sure is that you should always turn it off or at least put it on standby when NOT in use.
What else can I help you with?
How do you get a laptop battery to last longer?
Turn down the brightness, plug the laptop into a power source. There should be a "power saver" setting in the control panel.
How do you plug a iPod to a laptop?
It should have come with a cord. One end will plug into your iPod and the other will plug in to you laptop.
Why is there noise when you plug in power to your laptop?
The beep indicates that the power is connected. BTW - try this out, unplug the power from the outlet and plug just the power to the laptop. Notice, the beep will still sound.
What is that black box in a laptop power cord?
That is a transformer, it lowers the voltage coming from the plug to a lower voltage that the laptop can handle.
What should you plug in the remote wire into in a Bonneville?
As always, either the power antenna or the remote turn-on for an amplifier.
What can you do when your power plug quits charging your laptop?
When you plug it in the beep indicates so. You can make sure to stand still and check the battery.
What program should be on laptop to download music from my music folder to laptop. when i plug in the ipod it just says connected?
Itunes
My Acer aspire laptop power button flashes blue five times when ever i press the button A charging light doesnt appear when i plug it in How can i fix this?
The laptop charger may be broken and unable to power your laptop.
What are computer docking stations?
Docking stations allow you to plug a laptop into a standard desktop peripherals without plugging them directly into the laptop. Computer docking stations are central hubs where you can plug in a laptop to a power supply, a monitor, a keyboard, speakers and a mouse.
What should you use to connect your laptop with your Blackberry?
In order to connect your laptop with your Blackberry you will need a USB plug. Blackberry's come with a USB plug that will attach your phone to your computer to sync information.
Is there a way to override the power button on a laptop?
There is, but you'd have to remove the top cover. If the laptop won't turn on try this. Remove the power cord, remove the battery. With the battery out, plug the power cord back in. Try turning the laptop on. If it comes on, then you can put the battery back in.
What in the world are laptop chargers?
Laptop chargers are plug-in cords and voltage adapter boxes that come with your laptop so that you may keep the laptop's battery charged. Your computer should have come with one.
