The Mophie Juice Pack is now available for the Samsung Galaxy S4; this comes after Mophie launched its Juice Pack for the Samsung Galaxy S III last November. For those unfamiliar with the product, the Juice Pack is a durable case that also comes embedded with a battery that recharges the batteryin your phone with the flip of a switch...Source: http://www.phonearena.com/news/Mophie-Juice-Pack-now-available-for-Samsung-Galaxy-S4_id46774
