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  1. iconoclast

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

    That is a good tip, and I did see that site after logging in here after many years away. My thought was that at the price, the Ogrphy is a pretty good deal for a drop in package. If I can uses these in 6S configuration with diodes of some kind, and/or an 80v voltage cutoff circuit protection...
  2. 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...
  3. iconoclast

    Bosch 36V fatpacks opened up

    I'm still using the fat packs. In fact, if anyone has a spare case, I could use one. Melted one of the connectors on one of mine. Oops! Please pm me if yo have a spare case you want to give or sell to me.
  4. 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...
  5. iconoclast

    Thread for new battery breakthrough PR releases

    Starts with a discussion of stationary power requirements and solutions (his Liquid Metal Battery) but adds some interesting analysis of other promising chemistries at the end...
  6. iconoclast

    "Zephyr" - Finally, the "v4" Fechter/Goodrum/Hecker BMS...

    @Fechter/Goodrum: Are any of the latest Zephyr boards still available? If not, how much would it take to make a small production run worthwhile? I understand they would be unsupported.
  7. 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
  8. iconoclast

    Bosch 36V fatpacks opened up

    Wavecrest Tidalforce, X model. Turbo mode. 6P fatpack. Head down, elbows tucked in. Adrenaline. EV Grin. Bugs in teeth.
  9. 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
  10. 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...
  11. iconoclast

    Bosch 36V fatpacks opened up

    It will work just fine. I am using 6 fatpacks as an aux battery for my 1500w Wavecrest Tidalforce and it works great. Extends range about 15 miles, or 12 miles in turbo mode all the way. The torque and speed increase is incredible. An honest 35 mph without pedaling. Any faster, and I'd want...
  12. iconoclast

    Even Newer 4 to 24-cell Battery Management System (BMS)

    Gary, will the re-order boards have the updated transistor layout?
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