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.

Although betavoltaic batteries sound Nuclear they

The cost...LOL. I bet it would be perfect though. Id love to see a portable gaming device to be able to charge and run for 30 years WOW
And adding to the fact that todays smoke alarms run for approx 3-4 years without charge.

then they should do that with house-hold electricity

then they should do that with house-hold electricity

The cost in making a battery big enough to power a house for 30 years using the above technology would be in the millions. Not economical. Small things like laptops, mobile phones and watches are great applications for it.