No.
But you do have to "condition" them every so often on most laptops. Monthly? Basically just let the battery die on it's own once a month and it will reset the charger memory to recharge at the right capacity. Your manual should tell you exactly how. Or down load the manual from Apples support site.
You might even find the instructions from the Helpmenu in the upper Apple menu.
Assault is the threat of harm. Battery is the act of inflicting harm
It's said not to harm anything.
yes it will
If you do it correctly, no, you will not harm your battery.
Nothing. The battery is sealed an no harm will be done.
will disconnection the battery do any harm the the computor
No, it will not harm the laptop to remove the battery and plug it in if it will run that way.
It will do no harm.
No it will never harm your baby.
Assuming you never run it down it should last 3-5 years. But there is no guarantee and it can fail at any time. I had one that lasted 7 years and then again I had a new battery that only lasted 1 year. If you run the battery down you harm the battery and shorten it's life.
the battery will run down
No, battery acid is not hallucinogenic, but if you consume it, it will certainly harm you and may even kill you.