"At 10,000 Farads, a Graphene Supercapacitor / Battery is powerful enough to power up a Semi Truck while being the size of a paperback novel at this point"
"Currently the cost to manufacture a lithium battery is about $500 (USD) per/ kWh. Tesla recently announced a Super Factory to be built in Nevada, with a promise to get the price of lithium batteries down to $150 USD per kWh by 2020, our current cost estimated for this type of graphene base supercapacitor is about $100 per kWh today and we feel confident we should be able to cut this pricing in half by the end of 2015" From http://www.marketwatch.com/story/sunvault-energy-and-edison-power-company-create-massive-10000-farad-graphene-supercapacitor-2015-05-060
