Batteries grown from 'armour-plated' viruses

Now, I've grown a little skeptical about some breakthroughs that seem to promise a huge fix for environmentally-related technologies; but this actually does seem to be pretty promising. Batteries grown from 'armour-plated' viruses - tech - 08 April 2009 - New Scientist: "Compared to conventional lithium ion batteries, the biologically grown battery is environmentally friendly because much of the materials can now be made at room temperature or on ice and without harsh solvents." That fact that it's cheaper, easy and needs less engineering seems to be a winner.