As one of its daily deals, Anker Direct via Amazon offers Prime members the Anker PowerCore 10,400mAh Portable USB Charger in Black or White, model no. AK-A1214011, for $14.99 with free shipping. (Non-members can spend $35 or more to qualify for free shipping; otherwise, shipping adds $5.99.) That's $1 under our mention from earlier this week, $25 off list, and the lowest total price we've seen. It features two USB ports and PowerIQ technology. Deal ends today.