Engineering360: "Video: Designing diamond batteries powered by nuclear waste"

This sounds interesting/promising. But, I wonder about the power/wattage output. The longer the half-life, the weaker the decay; the weaker the decay, the lower the power/wattage output (and vice versa). So, can this battery really provide an effective power/size output? To get a good usable output, it might require a really big/heavy battery. Are there any calculations to address this concern? Sure, C-14 might be "radioactive", but that radioactivity needs to be quantified with respect to its electrical output.

I found this interesting. However, there is a very recent scientifically based critique of the idea that needs to be addressed.

https://www.youtube.com/watch?v=JDFlV0OEK5E

NUCLEAR Diamond Battery: BUSTED!!

126,116 views •Jan 30, 2020