ELI5: Explain Like I'm 5

Atomic battery

An atomic battery is a kind of battery that uses energy from radioactive material to generate power. This type of battery is different from regular batteries because it doesn't need to be recharged—it keeps producing energy for a very long time! To make an atomic battery, a small amount of radioactive material such as uranium or thorium is sealed inside a metal container. This container helps keep the radiation contained, so it doesn't escape into the environment. As the radioactive material decays, it releases energy that is used to generate electricity. The electricity is then stored in a special kind of battery so it can be used whenever it's needed. Atomic batteries are very useful in places where batteries need to last a long time without having to be recharged.