3 ms·
I wonder if it is possible to actually design a battery that has 20-30 years life.
I wonder if it is possible to actually design a battery that has 20-30 years life.
I think some sort of renewable energy source like solar might be a better choice for timeframes like that.
Sure, here is one that has been going for 175 years:
http://en.wikipedia.org/wiki/Oxford_Electric_Bell http://en.wikipedia.org/wiki/Oxford_Electric_Bell