I actually had something similar to this with my EVO. It was basically a double battery, packed into one, which made it twice at thick, and yes, twice as heavy. But the case, as stated, was slick, and even made it easier to hold the phone because the thickness of the battery. I just keep my phone plugged in while driving and while at work, so I usually don't have any battery issues. I, of course, probably don't game, chat, tweet, pin to pinterest, or whatever it is the young kids do these days, as much as some, so battery drain isn't an issue
