iTech Deals offers the Halo Pocket Power Bank 5,500mAh Charger in Zebra for $11.99. Coupon code "DEALNEWS300" cuts it to $8.99. With free shipping, that's $2 under our August mention and the lowest total price we've seen. (It's a current low by $16.) It can charge two devices simultaneously via a built-in micro USB and the included USB cable with three connector tips: micro USB, mini USB, and 30-pin.