OK, using the stated figure of 40 cents for a recharge and the web site info that said 6.5 hours hooked up to household 110 VAC, the handy dandy GE Energy Cost calculator says it uses the equivalent of a 600 watt light fixture burning for 6.5 hours. But you also have to pay for the gasoline. Of course, the 40 cents comes with a host of taxes and just wait until cap and trade kicks in.
Something doesn't sound right. 110 VAC and 600 watts would mean that the batteries are pulling just 5.45 amps charging up. That sounds a little low to say the least.
I don’t believe the hype for a second. If they were being truthful, they would have expressed their findings in Cost Per Mile, not Miles Per Gallon.