Brova Power via Amazon offers the DBPower 26,400mAh Laptop Portable Battery Pack for $99.99. Coupon code "63UTIW7B" drops the price to $67.99. With free shipping, that's the lowest price we could find by $35, although we saw it for $8 less last month. It features a 2-prong AC outlet and two USB charging ports. Deal ends January 31.