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We've long given up on waiting for announcements from EEStor (and, to a lesser degree, their partner ZENN) to come true. But, with the latest move by ZENN to drop their plans to launch the cityZENN high-speed electric car and will instead focus on becoming a supplier of ZENNergy Drive electric vehicle drivetrain components – ZENN's low-speed vehicles (pictured) have also been curtailed – the reality is that ZENN and EEStor are tied at the hip. As our friend Darryl Siry writes over at

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EEStor, the company behind the ultralight, ultra-efficient – and ultra secret – EEStor Electrical Energy Storage Units (EESU) that could change the electric car world, still isn't giving out much information about their product. But Ian Clifford, the CEO of Zenn Motors, is talking.

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Hype maintenance can be hard work. Following the Earth Day announcement that the EEStor ultracapacitor had passed independent tests that showed it had a relative permittivity of 22,500, the automaker most closely tied to the secretive company, ZENN, has come out to say two things. First, the test results have been verified. There are a whole heap of details on the verification process in the release after the jump. Second, ZENN says that the results mean it will pay EEStor another $700,000 U.S.

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How does this make sense: ZENN recently announced that company officials had selected a manufacturer to produce a highway-speed electric vehicle, called the cityZENN. Following this, ZENN's stock fell three percent. You'd think people would be happy with an announcement like that.

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For those "eenthusiasts" who still hold out hope that EEStor will come through on it's game-changing supercalifragilistic-capacitor pledges, a newly-awarded patent may offer some comfort. No, not the patent that EEStor itself was recently granted, but rather one that military application rights holder Lockheed Martin was just given for body armor that contains its own energy storage devices.

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Stop the presses! We've finally got some real information regarding EEStor's highly secretive capacitor-based energy storage system, though it's not exactly coming from the company itself. It seems that EEStor recently filed for patents of its new technology, which centers around a core of aluminum coated barium titanate powder immersed in a polyethylene terephthalate plastic matrix, and they've now been granted those patents. The best part for those of us who've been following the company's dev

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The EESTOR ultracapacitor is a technology we really, really want to know more about. The huge potential of these devices that we do know about certainly keeps our ears open for news - or rumors or anything, really - about the technology. We don't know much more about the actual ultracaps (aka Electrical Energy Storage Units or EESU), but Lockheed Martin must like them. The not-exactly-risk-friendly company - I mean, they work the bountiful government system with aplomb - has "signed an exclusive

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ZENN Motors vehicle at the EDTA Conference last November

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