I plug it in when it is in use. Unplug when not in use. If the battery fills up the computer should say (pluged in not charging) and it will use 5-10% then start charging itself again. When it fills up while in use and not gaming I unplug it and let it go down to 70% then plug it in again to keep the internal components moving. Today's day batteries do not require a full discharge to keep life long performance. 70-100% is sweet spot I think.
The days of Nicad batteries is over. Lithium polymer batteries do not require to be cycled to keep from getting a "memory". Conversely their number of cycles is finite, every discharge and recharge cycle is one point closer to the end of its life.
“Two things are infinite: the universe and human stupidity, I'm not sure about the former” ~ Albert Einstein
