5.5h is nothing. It's not long enough that you can use it the entire day, it's not even long enough in a work environment. 5.5h may be enough for gaming or some

5.5h is nothing. It's not long enough that you can use it the entire day, it's not even long enough in a work environment. 5.5h may be enough for gaming or something but apart from that, it's just too limiting. Additionally to that the Hololens is also quite bulky, so it's not like you can sacrifice on the design to create more battery capacity. It already doesn't look like something anyone would want to wear outside. Even if you improve the battery capacity, increase efficiency of the hardware and software and you still have something you can't really sell anyone as a AR-utopia level device, just on account of that design. I'd expect it to take at least a decade until you'll see regular people wearing AR glasses regularly as a personal device during their daily life.