As one of its daily deals, Amazon offers the Patriot Fuel+ 9,000mAh Portable Dual USB Battery Charger, model no. PCPB90002, for $47.99 with free shipping. That's $2 under our September mention and the lowest total price we could find by $19. It features one 2.5A and one 1A USB port for simultaneous charging. Deal ends January 1 at 3 am ET.