I WONDER IF THESE CAN BE SCALED UP: Nuclear waste powered battery lasts thousands of years. “The Bristol team warned that their radioactive diamond batteries wouldn’t be suitable for laptops or smartphones, because they contain only 1g of carbon-14, meaning that they provide very low power — only a few microwatts, which is less than a typical AA battery. Therefore, their application so far is limited to small devices that must stay unattended for a long time, such as sensors and pacemakers.”