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[NEW2elec]

I have seen videos on super capacitors vs batteries with some pros and cons but I thought I'd pass this along see what anyone thinks of it.

http://www.zdnet.com/article/bye-bye-batteries-mits-new-power-sponge-could-hold-key-to-electric-cars/

[Doug S]

"The capacity would then be astonishingly high, probably close to that of batteries..." he says.

Until proven otherwise, by commercially available, cost-competitive product, I still consider ultracaps to have the same problem they've always had in comparison with good batteries -- far lower energy density. Sometimes you see someone claim very high "power density", probably trying to confuse people, but it's a red herring -- the power density of currently available Li-ion batteries is more than sufficient, and their energy density is far superior to that of ultracaps.

As I said, until proven otherwise.