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  1. iconoclast

    What limits LiFEPO4 "12v drop-in" wired in series to 48v?

    I need to replace the six 12v batteries (6S, 72v) in a GEM NEV. Almost all of the drop-in 12v LFP suppliers recommend not connecting more than 4 in series. I understand about balancing to .2v before connecting, and charging each of these 12v batteries independently because the BMW will cut off...
  2. iconoclast

    Drive my Tesla Model S - Electric Car Guest Drive in Calif

    If you haven't driven a Tesla Model S yet and are interested, here's your chance. A dozen meet-up style gatherings called Electric Car Guest Drive will be held throughout California in May. The gatherings feature guest drives of the Tesla Model S, Fiat 500e, Ford Focus Electric and several...
  3. iconoclast

    Great review of lithium–air battery development challenges

    For all those following lithium–air battery development, here's a good review of current achievements and remaining challenges: The development and challenges of rechargeable non-aqueous lithium–air batteries http://www.tandfonline.com/doi/pdf/10.1080/19475411.2012.659227
  4. iconoclast

    A Tour of GM’s New Battery Lab

    27 minute tour of GM's battery lab, with some good info about the Volt battery pack. Sound quality sometimes sketchy, but worthwhile, it gets better toward the middle and end. http://www.technologyreview.com/video/?vid=369
  5. iconoclast

    IBM gets into battery tech with 10x goal

    Things in the battery world are about to get interesting. IBM makes a very serious investment in Lithium-Air, which has a theoretical energy density over 11.5x current production lion, and a practical energy density of about 10x. http://www.technologyreview.com/energy/22780/ In case a 10x...
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