iTechDeals offers the iGo 1,700mAh Portable USB Battery Pack in Black, model no. BN00315-0003, for $6.79. Coupon code "IGOPWR" cuts the price to $3.79. With free shipping, that's $2 below last month's mention and the lowest total price we could find by $2. It includes a 3.5-foot micro USB Cable and 30-pin connector adapter for Apple devices.