Adding on to its wireless charging lineup that already includes PowerSnap Kit and various PowerMats, Duracell has launched a line of GoPower Universal Batteries compatible with the system. From lowest to highest capacity, there's Day Trip ($60) with an 1850mAh cell, Overnighter ($80) with 4400 mAh, and the 8800mAh Longhaul ($130). The first of these is a glossy rounded square, with built-in micro-USB and Lightning cables, while the next two are matte…
