At Quiksilver, search for "Q1160" to find the Mophie 2,000mAh Juice Pack Plus for iPhone 4 and 4S in four colors (Red pictured) for $49.98. Coupon code "SDEXTRA45" cuts the price to $27.49. With free shipping, that's $35 below last February's mention, which was bundled with a case, earbuds, and a charging cable, and the lowest total price we could find by $63. This 2,000mAh battery pack provides up to an extra eight hours of talk time in 3G or up to 16 hours in 2G.