不充电也能续航百年太空中的核电池是何原理，为何不能民用2

A nuclear battery, powered by the heat generated from the decay of radioactive isotopes, converts thermal energy into electricity. Its long lifespan (up to centuries) makes it ideal for space applications, outlasting solar panels. Though eventually energy will deplete, it currently meets the demand for decades or even centuries in spacecraft like Mars rovers. The technology is also used in healthcare.