I am one of the people who uses my laptop like its a cellphone. I use with while it was powered by it's battery. I turn it off when it is close to low batt and I let it cool down for an hour before I decide to charge it. My brother on the other hand, dont use the battery of his laptop. He prefers using his laptop in AC adapter mode because he can use it for hours as long as he likes. Nothing bad happened to his laptop by far and it is already 8 years old. I want to know if there is any harm or risk on using the laptop without a battery? Why some people prefer to use their laptops like its a desktop? Is there a risk on using a laptop in AC adapter mode?