Until July 24 at 9 pm ET, Shnoop offers the Duracell Powerhouse USB 2.0 / mini-USB Device Charger, model no. PPS3US0001, for $15.99. Coupon code "dealnews1" cuts it to $14.99. With free shipping, that's the lowest total price we could find by $32, although it was a buck less last month (since expired). It features a 2000 mAh external battery and can power two devices at once (via USB and mini-USB) with up to 60 hours of backup power.