Poweradd Direct via Amazon offers the Poweradd Pilot 12,000mAh External USB Battery Pack in Classic White for $26.99. Coupon code "GT3YMSE6" cuts the price to $21.99. Plus, Prime members bag free shipping. (Non-members can get free shipping with orders of $35 or more; otherwise, shipping adds $5.55.) That's $5 under our May mention and the lowest total price we've seen for this model. Featuring dual USB ports, this battery comes with three connector tips and a micro USB cable.