Yugster offers the UNU Ultrapak Tour 10,000mAh Quick Charge Battery Pack, model no. UP-01-10000BB, for $72.97. Coupon code "FreeYugBuck" drops it to $71.97. With $5 for shipping, that's the lowest total price we could find by $23. If features a 15-minute fast charge time, led battery indicator, two USB ports, and compatibility with most major smartphones.