[b33j]

While it does charge quickly, I don't often have access to a charger while at work, which is why I need the extended battery. I often work 12 and 16 hour shifts, in and out of a warehouse, which kills the battery fairly quickly when losing signal. It's too annoying to keep pulling my phone out and putting it in and out of airplane mode, so I usually just go with the extended battery. If the back wasn't such a pain, I'd just get an extra battery, although I prefer just to get a bigger one so that I don't have to swap em out.