Kanex is among the many, many companies getting into the battery business with its new line of GoPower Packs. Available in 6,000mAh ($50) and 11,000mAh ($70) capacities, the chargers share an aesthetic, as well as functionality. Both have two USB ports: one at 1A, the other at 2.1A for tablets. They also have slide-out stands built into their bodies, which is a nice little addition. With either pack, you also receive a drawstring bag and Micro-USB…