Related competitor:
Nuclear battery produces power for 50 years without needing to charge (80 points, 5 months ago, 61 comments) https://news.ycombinator.com/item?id=38989690
"Tens of milliwatts" for decades from a coin cell. Amazing!
Related competitor:
Nuclear battery produces power for 50 years without needing to charge (80 points, 5 months ago, 61 comments) https://news.ycombinator.com/item?id=38989690