Newegg offers the RAVPower Element 10,400mAh Portable Battery Pack in Black, model no. RP-PB07, for $14.99. Coupon code "0210CLS02" cuts it to $11.24. With free shipping, that's $4 under our December mention and the lowest total price we could find by $9. It features dual USB output, an LED status bar, and includes one micro USB cable.