New Trent has introduced its PowerPak Ultra, which allows users to keep their USB-based devices juiced up even in the most extreme environments. It features a rugged exterior, and has an IP-67 rating, which means it can survive most drops and can even be temporarily submerged in water for up to 30 minutes. It packs 14,000 mAh of power or enough to store 700 percent of the average smartphone’s battery. With two USB ports it can simultaneously juice up almost any combination of smartphones, tablets and other USB-based devices.