iBattz has expanded its iOS battery line up with the introduction of the Mojo Removable Power Card Wallet ($50). This credit card-sized battery pack is unique not only because of its size, but also because the 1500mAh battery can be swapped on the fly. The batteries are the same as those in the company's Removable Battery Case -- and very similar to cell phone batteries -- so this accessory can be used as a charger for those as well. iBattz' plastic…
