ANKER POWERCORE FUSION 5000
anker.com The epitome of a portable battery pack, the Powercore Fusion 5000 ($26) includes an AC wall plug to pull double duty as a multi-port wall charger. When sitting in an airport near an outlet, you can use the Fusion to charge your iphone without using any of the internal 5,000mah (18.5Wh) battery. Then when an outlet is nowhere to be found, the same device can still charge your devices. In testing, we found the pack to charge in 2.5 hours.