>Hi everybody,
>
>I usually keep my laptop plugged in using regular power unit. Today I unplugged it for a short period of time and now it keeps telling me that my battery is running low and it needs re-charging. But why does it think that it needs to use battery?
>
>Is there something I need to adjust?
>
>I haven't re-started it for a long period of time, I usually just close it for the night and re-open the next day.
>
>Any ideas, advices?
>
>Thanks in advance.

Try to restart it.
Better Shutdown and after few minutes start it.
And if the Laptop is HP and you have Win7 on it, keep in mind that Windows 7 did not measure battery well on some HP models.