Watch out for this term: "betavoltaic battery". The site "Next Energy News" is promoting a story about the technology purporting that a betavoltaic battery has been created that could power a laptop for 30 years.
Your next laptop could have a continuous power battery that lasts for 30 years without a single recharge thanks to work being funded by the U.S. Air Force Research Laboratory. The breakthrough betavoltaic power cells are constructed from semiconductors and use radioisotopes as the energy source. As the radioactive material decays it emits beta particles that transform into electric power capable of fueling an electrical device like a laptop for years. ... If all goes well plans are for these cells to reach store shelves in about 2 to 3 years.Horseshit. If the AFRL had built a new magic battery that could power things for 30 years, don't you think it would be the top bit of news on their site? Scientists Invent 30 Year Continuous Power Laptop Battery [NextEnergyNews.com]