A few years ago when I got my first phone, I would throw it on the charger whenever I came home, regardless of where the battery life was at. Over time that really screwed it up... Finally I was informed that you should always drain a phone's battery fully (or atleast wait until it's low) before charging. I've done this ever since and have had no problems with battery life on my phones, BUT all my phones until now have been crappy flip phones. I've heard on here that the battery in the Evo is different (Lithium-ion as opposed to nickel?) and should be charged frequently, instead of being fully-drained before each charge. Anyway, I'm confused, and I don't want to degrade my battery's performance as it already struggles to get through a whole day. Can anyone shed some light on the best way to keep your Evo's battery efficient and happy?