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  1. EV News
    This seems interesting, and the research is being done at our own University of MD: http://www.ecnmag.com/news/2015/05/batteries-one-material-does-it-all?et_cid=4558249&et_rid=45573081&type=cta
  2. Batteries and Charging
    Hi, I am thinking a little ahead to when I get the batteries and controller. Currently I intend on getting a 72V controller due to the fact that they are cheap and easy to get (probably a Curtis one) according to my ebay searches. I also intend to get 12 fairly cheap and cheerful 110 Ah...
  3. Classifieds
    Looking for a few cells from a Nissan LEAF pack. Need the entire can, not just the pouches from inside. Looking for 5 - 10 cells. Destination, Dallas, Tx
  4. Blog
    An electric car is a car powered by electric motor, instead of gasoline combustion engine. While there are no visible external differences, there are big differences present under the hood. Still, an electric car is simple to build. But before you start building it, you need to have a blueprint...
  5. Classifieds
    $1.00/Ah for smaller quantities, goes down the more you purchase. I have a large lot of Voltronix (rebranded Winston) cells available for immediate shipment in the US that I no longer have a need for. Price is significantly lower than what you would pay retail (or anywhere else for that...
  6. Batteries and Charging
    Is it equivalent to have 1 set of 45 batteries verses 2 sets of batteries that are half the size per unit? The two sets would of course be parallel so that the total voltage is the same. So would you be able to draw the same current? I realise that the dual pack would be more expensive but I am...
  7. All EV Conversions and Builds
    Hi, my name is Travis! I am a high school student and newbie at ev conversions and automotive engineering in general. I've been looking into doing a conversion for about a year now. I am unsure of what vehicle I'd like to convert. It all depends on what I can afford. I'll post updates here! One...
  8. Classifieds
    I have a large excess of brand new Lifepo4 cells in stock (in the United States) and ready to ship. They are priced to sell quickly, so if you are in the need for some cells or have an upcoming EV project this is definitely a steal. Here is what I got: Voltronix 180Ah Cells Voltronix 260Ah...
  9. Blog
    Hello Everybody. I have a Project about prototype Ev. and I need to select 3kw Brushless Dc Motor, controller and batteries. also I need to have Battery management Sytem for this system with Energy management system. Actually I don't know how to start I have chassis which I made from the...
  10. Batteries and Charging
    Hi Folks, I know this is an oft discussed and old subject but I'm throwing ti out again to see if I am off base. Subject: Range extending trailer What I've learned here and elsewhere: A gen big enough to power a car is too big and too costly. Most mileage extenders are...
  11. Electric Bikes
    Hi. I am building an electric scooter, which is powered by 4 6volt, 4.5amp rechargeable lead acid DC batteries (http://www.jaycar.com.au/productView.asp?ID=SB2496), wired in series to produce 24volts (18amps). I am planning to use an inbuilt charging circuit, which plugs into mains power (240v...
  12. Batteries and Charging
    Hi. I am building an electric scooter, which is powered by 4 6volt, 4.5amp rechargeable lead acid DC batteries (http://www.jaycar.com.au/productView.asp?ID=SB2496), wired in series to produce 24volts (18amps). I am planning to use an inbuilt charging circuit, which plugs into mains power (240v...
  13. Batteries and Charging
    This is my first post. I recently installed 100ah GBS Batteries in my 66 VW Bus. It seems that I have one bad cell. It sags badly on acceleration. A replacement is on order. I would appreciate feedback from people that have had these batteries in use for more than a year or so, to see how...
  14. Classifieds
    1-800-432-1064 Thank you for having a look at my post! Saint Lucie Battery and Tire has been providing batteries for the treasure coast and beyond for decades! Whether you build it yourself or bought it at a dealership we have the batteries you need! With 12 locations across the Treasure...
  15. Blog
    :)There is a new battery technology. Lead acid batteries can now be used for a more indefinite period of time. It would not be surprising if people use the same lead acid batteries for up to 45 years. The best batteries for this new battery technology are flooded lead acid batteries...
  16. Technical Discussion
    I just purchased a 100 Ah deep cycle group 24 battery at Walmart for $58 plus a $9 core charge, and a $7 plastic enclosure that has extra room. For now I will just use it with a 12V 1000W peak inverter modified to provide 270 VDC for my 230V three phase VFD and motor. However, it does not have...
  17. Batteries and Charging
    I haven't seen much discussion on this board regarding NiMH batteries so I'd like to start one. More specifically I'm interested in using the f-size cells. Specs: 1.2V 13Ah 220g (.485lb) For my purposes I'll need 120 (30 series/4 parallel): 36V 52Ah 26.4kg (58.2lb) Some basic math: 36V * 52Ah...
  18. Parts Vendors
    Look here for more detail on my disappointing experience: http://www.diyelectriccar.com/forums/showthread.php/caution-shenzhen-victpower-technology-co-84762.html
  19. Batteries and Charging
    CAUTION about ShenZhen Victpower Technology Co. The bottom line is that they sent whatever they had on hand, including some totally junk/reject cells, and any guarantee they claim to offer is worthless. I knew I was taking a risk and can accept the ~10% loss but I would caution anyone...
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