Printable, flexible battery offers 10 times the density of lithium-ion.
I remember last year I was thinking about how the Apollo Lunar missions would have benefited from modern technology, to provide better performance through less weight, more compact components, more processing power, etc. I thought that modern lithium batteries would have been a much better thing than the silver-zinc ones they used, but it appeared not to be the case, although the 1960’s batteries couldn’t be recharged, they were lighter and have better energy density than our modern batteries.