While most companies can fit a comparably capacious battery into something as small as an iPad case, BoostTurbine2000 is 1” thick, 2.2” wide, and 5” deep. The majority of the body is a brushed aluminum shell, while the underside is plastic. You’ll find the pack’s I/O all on one side: a Micro-USB input for recharging with the included cable, and the aforementioned full-sized USB port. Between the two is a power switch…