Vanadium Mega Flow Batteries AKA Vanadium Redox

I just heard on NPR about an amazing (that is my take) battery technology developed by the Dep. of Defense years ago and ready for deployment. Aside for the initial high cost these things could be the way of the future.

Also mentions the rhubarb battery which was in the news not very long ago.

here is the link to the radio bit that aired Jan 09/2017.

www.wbur.org/bostonomix/2017/01/09/vanadium-liquid-energy-storage

Hope you find it as interesting as I did. Enjoy.

Edit:
Part 2 (Rhubarb battery)
www.wbur.org/bostonomix/2017/01/10/rhubarb-battery-storage