Amazon has the New Trent iCarrier 12,000mAh External Battery Pack for $37.95. When you enter the coupon code “TWOPORTS” at checkout, the price drops to only $24.95 Prime shipped. That’s $52 off the list price and the best offer we could find for it.
It features a heavy duty 5V Dual USB External Battery that charges two devices simultaneously. 2A output for iPad/Tablet and 1A output for iPhone/smartphones. Also, the iCarrier can be recharged from any standard 5V/2A USB charge ports: computer USB ports and USB wall chargers.