Extra batteries and chargers are staple items to add to your tech bag before leaving on vacation. In my bag you'll find a variety of chargers to keep me going throughout my day of heavy touring. For my usage of heavy tweeting and texting during vacations, my iPhone battery will last me until about mid-day. After that it's time to plug in and power up to both keep in touch with the rest of our party, and share the fun with my Twitter stream. In the past if you forgot your spare battery you were just plain out of luck, but now if you forget, now Disney's got your back.