Scientists develop battery with 5,000+ year lifespan by encasing radioactive carbon in diamond

British scientists have developed a diamond battery powered by radioactive carbon-14, potentially enabling electronics to run for millennia without replacement. The battery harnesses carbon-14's decay process to generate a continuous electron flow, encased in diamond for safety. With a 5,700-year half-life, it could last over 10,000 years before reaching 50% capacity. Possible uses include medical implants, extreme environment sensors, and space exploration equipment.