Apple has plans to use hydrogen in batteries allowing iPhones and iPods to hold a charge for WEEKS

Apple submitted patent applications that would use hydrogen fuel cell technology and allow their products to weigh less and last for weeks without needing to recharge.

Source:
http://www.dailymail.co.uk/news/article-2078499/Apple-plans-use-hydrogen-batteries-allowing-iPhones-iPods-hold-charge-WEEKS.html