The Duracell Bunny brings his zinc carbon colleagues on a climbing trip, knowing full well that the climb is too strenuous for them. As the generic toys fall from overexertion and heat stroke, Duracell climbs higher, not even pausing to assess the health of his supposed friends. He seems to derive great joy, even triumph, from watching them fall. DO NOT mess with this rabbit.
Now the "Really Last Longer" type of batteries powered by hydrogen isotopes are in testing for military applications.
Widetronix's batteries are powered by the decay of a hydrogen isotope called tritium into high-energy electrons. While solar cells use semiconductors such as silicon to capture energy from the photons in sunlight, betavoltaic cells use a semiconductor to capture the energy in electrons produced during the nuclear decay of isotopes. This type of nuclear decay is called "beta decay," for the high-energy electrons, called beta particles, that it produces. The lifetimes of betavoltaic devices depend on the half-lives, ranging from a few years to 100 years, of the radioisotopes that power them. To make a battery that lasts 25 years from tritium, which has a half-life of 12.3 years, Widetronix loads the package with twice as much tritium as is initially required. These devices can withstand much harsher conditions than chemical batteries. This, and their long lifetimes, is what makes betavoltaics attractive as a power source for medical implants and for remote military sensing in extremely hot and cold environments.
Source: http://www.technologyreview.com/energy/23959/
What does this mean:
When you buy a doll for your baby with this battery, the doll would still work even after 25 years with the same battery :D. But weather such batteries would be released for consumer consumption is still a question.
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