I'm using my laptop about 8 hours a day and most of the time, I'm using it at home. My concern is that will LEAVING IT PLUGGED IN WHILE IM USING IT FOR 8 HOURS EVEN THOUGH ITS AT 100% battery affect my battery? It is a 4cell lithium ion battery and it is built in.
nope, I usually keep mine laptop when not traveling plugged in 24/7 and it's still good.
Only run down the batter once in a great while, but from what I've heard if you keep your battery plugged in (except for those once in a long while battery drains) it will keep it's charge for longer than if you keep unplugging it.