Nuclear batteries - also known as radioisotope batteries - work on the principle of utilising the energy released by the decay of nuclear isotopes and converting it into electrical energy through semiconductor converters. The partners said their small nuclear battery will be designed to provide a reliable power source with a lifespan of up to 50 years without requiring recharging. Utilising advanced materials and innovative design, the battery will convert the energy from the beta decay of a radioactive isotope, such as nickel-63, into electrical energy. "Nickel-63 nuclear batteries have several promising potential markets due to their unique characteristics and long-lasting power supply," they said.