A laptop can be powered from the mains AC, without the battery being present. But, the laptop will lose unsaved data should the power suddenly stop - which can also happen with desktops that don't normally have a backup battery.
I might need to be charged or it just may be an old laptop
If you are asking about the wireless access point, yes it can. If you are asking about the wifi card in the laptop, maybe, you would need the proper software and a hardwired Internet connection.
No, after the battery in your laptop is fully charged the power is cut off to it.
Laptop Most commonly called a laptop.
Over time you will shorten the lifespan of your battery. Once it's fully charged if you don't need to use the battery just unplug it from the laptop and only work with mains power.
if the laptop battery over charged, the laptop battery will get hot, Seriously will damage the battery, but now most of the laptop battery have a overshoot protection, when the battery was full charged, it will stop charging automatic, so it won't worry about it
Yes can be charged
No. But if you want some type of internet access then it does need to be hardwired to some kind of internet gateway like a DSL or cable modem.
If your Bluetooth has a USB charger then it can be charged through a laptop computer.
It means the battery is full.
Using the datacable it can be charged..
i charged my hp mini until it was full, it desnt need to be any longer because they overheat