BuQu Tech has introduced its Magnetyze Mobile Battery ($60), a new accessory for its impressive Magnetyze case. When attached to an iPhone with a Magnetyze case, the 1800mAh battery can supply up to 8 hours of additional talk time, according to the company. The battery can be charged using any Magnetyze charger or a standard micro USB cable. A four-light LED gauge lets users know how much power remains on the battery. The Magnetyze Mobile Battery…