We’ve all been there: you’re away from home, your iPhone is dead and you have to make a call. Your ipod is toast, and the only seat left on the subway is next to Nancy Talkalot. Here is where Kensington’s battery pack comes to the rescue, recharging a dead iPhone or iPod. Two versions are available: the large version includes an AC adapter, a USB cable and weighs in just under 4 ounces. The mini, weighing in at 1.6 ounces, comes with a retractable USB cable for charging. When fully charged, the large battery pack will keep the music flowing for up to 100 hours, or ten hours of iPhone talk time.

Buy: $49.95