It shouldn't - the laptop should be fitted with circuitry to stop charging the battery once it's full. That way, the battery cannot be overcharged. If you're always using the laptop at home (or near a mains socket) - you can simply remove the battery, and just run it off the mains.
No, it will not harm the laptop to remove the battery and plug it in if it will run that way.
Yes, connecting a battery charger the wrong way around can cause damage to the battery, possibly leading to overheating, leaking, or even explosion. It can also damage the charger itself and the connected device or vehicle. It's important to always double-check the polarity before connecting a battery charger.
Some have a switch for 6 or 12V - if not you will "cook" a 6 volt battery using a 12 Volt charger
the answer is NO. once the battery cells are fully charge, keep charging it will cause harm to the battery cells which will lead to short live span of the battery.
Yes, as long as the indicator is on, it is consuming wattage in small increments. No harm no foul on the battery or electric bill, but if it is a 3+ year old laptop, you should let the battery discharge to almost 0% for longevity.
It means the battery has been drained of all it's power. Simply recharge the battery with a battery charger and it will be fine. You do not have to replace the battery, although draining the battery fully does harm the battery. Charge the battery fully and it will function as it should.
New batteries almost always come fully charged. If it was not then charge it with a battery charger and do not use your vehicle alternator to charge a dead battery. You may do harm to the alternator which is not built to charge a dead battery but is instead built to keep a good battery fully charged.
of course not !
Assault is the threat of harm. Battery is the act of inflicting harm
NO just be gentle with them. Unless the laptop falls on your scrotum, then it will harm it.
If you touch both sides of a battery simultaneously, an electric current may flow through your body, causing a shock or injury. This is because the battery creates a circuit with your body, allowing electricity to pass through. It is important to avoid touching both sides of a battery at the same time to prevent harm.
If you mean can you plug in an ac adaptor to charge the laptop while the laptop is running, yes, you can. There is no harm to the laptop whatsoever.