As we all know, going to 0 on any lithium battery is bad. So, the question is...How long will these battery mods stay viable with constantly going to 0. They really need to do a software update where you can go off of phone power once it gets down to 10 or 15%. The easy answer is to just remove the mod when it gets low, but I don't really like not having a back on my phone. I'm paranoid about something happening to all those communications (or getting dirty). And it's not convenient to carry around a style shell to change it out with. Or do most of you say, screw it, and let it go to 0 routinely?