Initially announced in late 2014, Lynktec’s Reeljuice Power Bank ($100-$120) is now available for purchase. The battery pack most notably includes a built-in 4-foot retractable charging cable. It comes in two capacities — 5300 mAh for $100, or a larger 8000 mAh version for $120. Reeljuice supports pass-through charging at speeds up to 2.1A, allowing for full-speed charging of newer iPads. Though a micro-USB connector is attached to the built-in…