I bought my first macbook pro when the late 2013 retina model was released and am still learning about how to use the battery. The way I've been using it was keeping it plugged in at 100% all day when I'm home. Everyday I go to class, I take it off the charger and use it on it's own power. By the time I get home 4-5 hours later, it will be at around maybe 75-85% depending on how much I used it. By then, I'll have it plugged back in again until tomorrow. That's my daily routine with it. Is that a good routine in conserving the 12 hour battery life? What do you guys do? Also, I use the laptop for hours at a time while it's plugged in at 100%. That won't effect the battery negatively right?