You don't have to keep track of it. The OS will tell you when you have 10% left which is about 2 days of use and it quick charges in about 20 minutes to give yo

You don't have to keep track of it. The OS will tell you when you have 10% left which is about 2 days of use and it quick charges in about 20 minutes to give you a month's worth of use. It's a non-issue. FWIW, the reason it's on the bottom (according to one of the engineers) is because they didn't want people to leave it plugged in all the time while using it as that severely degrades the lifespan of the internal battery. Forcing people to plug it in while not in use apparently extended the lifespan by something crazy like 20x.