radioisotope sources of electricity, betavoltaic battery based on carbon 14 or hidrogen 3 isotope Tritium Stock Photo - Alamy
Commercially-available NanoTritium battery can power microelectronics for 20+ years
Atomic Batteries: Energy from Radioactivity
Make Your Own Nuclear Battery | Hackaday
A fierce man who made his own nuclear battery that does not need to be replaced for more than 10 years and incorporated it into a portable game machine appeared - GIGAZINE