Since the earthquake and subsequent tsunami, Japanese companies have been focusing their efforts on creating products that can be useful in an emergency. And since batteries can be vital when a power grid's been knocked out, Sanyo has been working to improve their shelf life. On a full charge, their latest rechargeable nickel-metal hydride AA and AAA Eneloop batteries will retain up to 70% of their capacity after sitting unused for five years. And if you abandon them for just a year, they'll have only lost about 10% of their charge. Improvements that come courtesy of a change in the crystal lattice structure of the hydrogen storing alloy.
2DayBlog.com, New Eneloops can keep their charge for over five years, longer than your relationship
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